Babylon.js/dist/preview release/serializers/babylon.glTF2Serializer.js

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/***/ "../../node_modules/tslib/tslib.es6.js":
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/*! *****************************************************************************
Copyright (c) Microsoft Corporation.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */
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/***/ }),

/***/ "../../node_modules/webpack/buildin/global.js":
/*!***********************************!*\
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// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
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/***/ }),

/***/ "./glTF/2.0/Extensions/KHR_lights_punctual.ts":
/*!****************************************************!*\
  !*** ./glTF/2.0/Extensions/KHR_lights_punctual.ts ***!
  \****************************************************/
/*! exports provided: KHR_lights_punctual */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_lights_punctual", function() { return KHR_lights_punctual; });
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.vector */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFExporter */ "./glTF/2.0/glTFExporter.ts");
/* harmony import */ var _glTFUtilities__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../glTFUtilities */ "./glTF/2.0/glTFUtilities.ts");








var NAME = "KHR_lights_punctual";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/blob/master/extensions/2.0/Khronos/KHR_lights_punctual/README.md)
 */
var KHR_lights_punctual = /** @class */ (function () {
    /** @hidden */
    function KHR_lights_punctual(exporter) {
        /** The name of this extension. */
        this.name = NAME;
        /** Defines whether this extension is enabled. */
        this.enabled = true;
        /** Defines whether this extension is required */
        this.required = false;
        this._exporter = exporter;
    }
    /** @hidden */
    KHR_lights_punctual.prototype.dispose = function () {
        this._lights = null;
    };
    Object.defineProperty(KHR_lights_punctual.prototype, "wasUsed", {
        /** @hidden */
        get: function () {
            return !!this._lights;
        },
        enumerable: false,
        configurable: true
    });
    /** @hidden */
    KHR_lights_punctual.prototype.onExporting = function () {
        this._exporter._glTF.extensions[NAME] = this._lights;
    };
    /**
     * Define this method to modify the default behavior when exporting a node
     * @param context The context when exporting the node
     * @param node glTF node
     * @param babylonNode BabylonJS node
     * @param nodeMap Node mapping of unique id to glTF node index
     * @returns nullable INode promise
     */
    KHR_lights_punctual.prototype.postExportNodeAsync = function (context, node, babylonNode, nodeMap) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            if (node && babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["ShadowLight"]) {
                var babylonLight = babylonNode;
                var light = void 0;
                var lightType = (babylonLight.getTypeID() == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Light"].LIGHTTYPEID_POINTLIGHT ? "point" /* POINT */ : (babylonLight.getTypeID() == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Light"].LIGHTTYPEID_DIRECTIONALLIGHT ? "directional" /* DIRECTIONAL */ : (babylonLight.getTypeID() == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Light"].LIGHTTYPEID_SPOTLIGHT ? "spot" /* SPOT */ : null)));
                if (lightType == null) {
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Logger"].Warn(context + ": Light " + babylonLight.name + " is not supported in " + NAME);
                }
                else {
                    var lightPosition = babylonLight.position.clone();
                    var convertToRightHandedSystem = _this._exporter._convertToRightHandedSystemMap[babylonNode.uniqueId];
                    if (!lightPosition.equals(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].Zero())) {
                        if (convertToRightHandedSystem) {
                            _glTFUtilities__WEBPACK_IMPORTED_MODULE_2__["_GLTFUtilities"]._GetRightHandedPositionVector3FromRef(lightPosition);
                        }
                        node.translation = lightPosition.asArray();
                    }
                    if (lightType !== "point" /* POINT */) {
                        var localAxis = babylonLight.direction;
                        var yaw = -Math.atan2(localAxis.z * (_this._exporter._babylonScene.useRightHandedSystem ? -1 : 1), localAxis.x) + Math.PI / 2;
                        var len = Math.sqrt(localAxis.x * localAxis.x + localAxis.z * localAxis.z);
                        var pitch = -Math.atan2(localAxis.y, len);
                        var lightRotationQuaternion = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].RotationYawPitchRoll(yaw, pitch, 0);
                        if (convertToRightHandedSystem) {
                            _glTFUtilities__WEBPACK_IMPORTED_MODULE_2__["_GLTFUtilities"]._GetRightHandedQuaternionFromRef(lightRotationQuaternion);
                        }
                        if (!lightRotationQuaternion.equals(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].Identity())) {
                            node.rotation = lightRotationQuaternion.asArray();
                        }
                    }
                    if (babylonLight.falloffType !== babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Light"].FALLOFF_GLTF) {
                        babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Logger"].Warn(context + ": Light falloff for " + babylonLight.name + " does not match the " + NAME + " specification!");
                    }
                    light = {
                        type: lightType
                    };
                    if (!babylonLight.diffuse.equals(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White())) {
                        light.color = babylonLight.diffuse.asArray();
                    }
                    if (babylonLight.intensity !== 1.0) {
                        light.intensity = babylonLight.intensity;
                    }
                    if (babylonLight.range !== Number.MAX_VALUE) {
                        light.range = babylonLight.range;
                    }
                    if (lightType === "spot" /* SPOT */) {
                        var babylonSpotLight = babylonLight;
                        if (babylonSpotLight.angle !== Math.PI / 2.0) {
                            if (light.spot == null) {
                                light.spot = {};
                            }
                            light.spot.outerConeAngle = babylonSpotLight.angle / 2.0;
                        }
                        if (babylonSpotLight.innerAngle !== 0) {
                            if (light.spot == null) {
                                light.spot = {};
                            }
                            light.spot.innerConeAngle = babylonSpotLight.innerAngle / 2.0;
                        }
                    }
                    if (_this._lights == null) {
                        _this._lights = {
                            lights: []
                        };
                    }
                    _this._lights.lights.push(light);
                    var lightReference = {
                        light: _this._lights.lights.length - 1
                    };
                    // Avoid duplicating the Light's parent node if possible.
                    var parentBabylonNode = babylonNode.parent;
                    if (parentBabylonNode && parentBabylonNode.getChildren().length == 1) {
                        var parentNode = _this._exporter._nodes[nodeMap[parentBabylonNode.uniqueId]];
                        if (parentNode) {
                            var parentNodeLocalMatrix = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Matrix[0];
                            var parentInvertNodeLocalMatrix = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Matrix[1];
                            var parentNodeLocalTranslation = parentNode.translation ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](parentNode.translation[0], parentNode.translation[1], parentNode.translation[2]) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].Zero();
                            var parentNodeLocalRotation = parentNode.rotation ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"](parentNode.rotation[0], parentNode.rotation[1], parentNode.rotation[2], parentNode.rotation[3]) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].Identity();
                            var parentNodeLocalScale = parentNode.scale ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](parentNode.scale[0], parentNode.scale[1], parentNode.scale[2]) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].One();
                            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Matrix"].ComposeToRef(parentNodeLocalScale, parentNodeLocalRotation, parentNodeLocalTranslation, parentNodeLocalMatrix);
                            parentNodeLocalMatrix.invertToRef(parentInvertNodeLocalMatrix);
                            // Convert light local matrix to local matrix relative to grandparent, facing -Z
                            var lightLocalMatrix = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Matrix[2];
                            var nodeLocalTranslation = node.translation ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](node.translation[0], node.translation[1], node.translation[2]) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].Zero();
                            // Undo directional light positional offset
                            if (babylonLight instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["DirectionalLight"]) {
                                nodeLocalTranslation.subtractInPlace(_this._exporter._babylonScene.useRightHandedSystem ? babylonLight.direction : _glTFUtilities__WEBPACK_IMPORTED_MODULE_2__["_GLTFUtilities"]._GetRightHandedPositionVector3(babylonLight.direction));
                            }
                            var nodeLocalRotation = _this._exporter._babylonScene.useRightHandedSystem ? babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].Identity() : new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"](0, 1, 0, 0);
                            if (node.rotation) {
                                nodeLocalRotation.multiplyInPlace(new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"](node.rotation[0], node.rotation[1], node.rotation[2], node.rotation[3]));
                            }
                            var nodeLocalScale = node.scale ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](node.scale[0], node.scale[1], node.scale[2]) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].One();
                            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Matrix"].ComposeToRef(nodeLocalScale, nodeLocalRotation, nodeLocalTranslation, lightLocalMatrix);
                            lightLocalMatrix.multiplyToRef(parentInvertNodeLocalMatrix, lightLocalMatrix);
                            var parentNewScale = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Vector3[0];
                            var parentNewRotationQuaternion = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Quaternion[0];
                            var parentNewTranslation = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TmpVectors"].Vector3[1];
                            lightLocalMatrix.decompose(parentNewScale, parentNewRotationQuaternion, parentNewTranslation);
                            parentNode.scale = parentNewScale.asArray();
                            parentNode.rotation = parentNewRotationQuaternion.asArray();
                            parentNode.translation = parentNewTranslation.asArray();
                            if (parentNode.extensions == null) {
                                parentNode.extensions = {};
                            }
                            parentNode.extensions[NAME] = lightReference;
                            // Do not export the original node
                            resolve(undefined);
                            return;
                        }
                    }
                    if (node.extensions == null) {
                        node.extensions = {};
                    }
                    node.extensions[NAME] = lightReference;
                }
            }
            resolve(node);
        });
    };
    return KHR_lights_punctual;
}());

_glTFExporter__WEBPACK_IMPORTED_MODULE_1__["_Exporter"].RegisterExtension(NAME, function (exporter) { return new KHR_lights_punctual(exporter); });


/***/ }),

/***/ "./glTF/2.0/Extensions/KHR_materials_sheen.ts":
/*!****************************************************!*\
  !*** ./glTF/2.0/Extensions/KHR_materials_sheen.ts ***!
  \****************************************************/
/*! exports provided: KHR_materials_sheen */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return KHR_materials_sheen; });
/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTFExporter */ "./glTF/2.0/glTFExporter.ts");
/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__);


var NAME = "KHR_materials_sheen";
/**
 * @hidden
 */
var KHR_materials_sheen = /** @class */ (function () {
    function KHR_materials_sheen(exporter) {
        /** Name of this extension */
        this.name = NAME;
        /** Defines whether this extension is enabled */
        this.enabled = true;
        /** Defines whether this extension is required */
        this.required = false;
        /** Reference to the glTF exporter */
        this._textureInfos = [];
        this._exportedTextures = [];
        this._wasUsed = false;
    }
    KHR_materials_sheen.prototype.dispose = function () {
        this._textureInfos = [];
        this._exportedTextures = [];
    };
    Object.defineProperty(KHR_materials_sheen.prototype, "wasUsed", {
        /** @hidden */
        get: function () {
            return this._wasUsed;
        },
        enumerable: false,
        configurable: true
    });
    KHR_materials_sheen.prototype._getTextureIndex = function (babylonTexture) {
        var textureIndex = this._exportedTextures.indexOf(babylonTexture);
        if (textureIndex === -1 && babylonTexture.reservedDataStore) {
            textureIndex = this._exportedTextures.indexOf(babylonTexture.reservedDataStore.source);
        }
        return textureIndex;
    };
    KHR_materials_sheen.prototype.postExportTexture = function (context, textureInfo, babylonTexture) {
        var textureIndex = this._getTextureIndex(babylonTexture);
        if (textureIndex > -1) {
            this._textureInfos[textureIndex] = textureInfo;
        }
    };
    KHR_materials_sheen.prototype.postExportMaterialAdditionalTextures = function (context, node, babylonMaterial) {
        if (babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__["PBRMaterial"]) {
            if (babylonMaterial.sheen.isEnabled && babylonMaterial.sheen.texture) {
                this._exportedTextures.push(babylonMaterial.sheen.texture);
                return [babylonMaterial.sheen.texture];
            }
        }
        return [];
    };
    KHR_materials_sheen.prototype.postExportMaterialAsync = function (context, node, babylonMaterial) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            var _a;
            if (babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__["PBRMaterial"]) {
                if (!babylonMaterial.sheen.isEnabled) {
                    resolve(node);
                    return;
                }
                _this._wasUsed = true;
                if (node.extensions == null) {
                    node.extensions = {};
                }
                var sheenInfo = {
                    sheenColorFactor: babylonMaterial.sheen.color.asArray(),
                    sheenRoughnessFactor: (_a = babylonMaterial.sheen.roughness) !== null && _a !== void 0 ? _a : 0
                };
                if (babylonMaterial.sheen.texture) {
                    var textureIndex = _this._getTextureIndex(babylonMaterial.sheen.texture);
                    if (textureIndex > -1) {
                        sheenInfo.sheenTexture = _this._textureInfos[textureIndex];
                    }
                }
                node.extensions[NAME] = sheenInfo;
            }
            resolve(node);
        });
    };
    return KHR_materials_sheen;
}());

_glTFExporter__WEBPACK_IMPORTED_MODULE_0__["_Exporter"].RegisterExtension(NAME, function (exporter) { return new KHR_materials_sheen(exporter); });


/***/ }),

/***/ "./glTF/2.0/Extensions/KHR_materials_unlit.ts":
/*!****************************************************!*\
  !*** ./glTF/2.0/Extensions/KHR_materials_unlit.ts ***!
  \****************************************************/
/*! exports provided: KHR_materials_unlit */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return KHR_materials_unlit; });
/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTFExporter */ "./glTF/2.0/glTFExporter.ts");
/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__);



var NAME = "KHR_materials_unlit";
/**
 * @hidden
 */
var KHR_materials_unlit = /** @class */ (function () {
    function KHR_materials_unlit(exporter) {
        /** Name of this extension */
        this.name = NAME;
        /** Defines whether this extension is enabled */
        this.enabled = true;
        /** Defines whether this extension is required */
        this.required = false;
        this._wasUsed = false;
    }
    Object.defineProperty(KHR_materials_unlit.prototype, "wasUsed", {
        /** @hidden */
        get: function () {
            return this._wasUsed;
        },
        enumerable: false,
        configurable: true
    });
    KHR_materials_unlit.prototype.dispose = function () {
    };
    KHR_materials_unlit.prototype.postExportMaterialAsync = function (context, node, babylonMaterial) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            var unlitMaterial = false;
            if (babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__["PBRMaterial"]) {
                unlitMaterial = babylonMaterial.unlit;
            }
            else if (babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_1__["StandardMaterial"]) {
                unlitMaterial = babylonMaterial.disableLighting;
            }
            if (unlitMaterial) {
                _this._wasUsed = true;
                if (node.extensions == null) {
                    node.extensions = {};
                }
                node.extensions[NAME] = {};
            }
            resolve(node);
        });
    };
    return KHR_materials_unlit;
}());

_glTFExporter__WEBPACK_IMPORTED_MODULE_0__["_Exporter"].RegisterExtension(NAME, function (exporter) { return new KHR_materials_unlit(exporter); });


/***/ }),

/***/ "./glTF/2.0/Extensions/KHR_texture_transform.ts":
/*!******************************************************!*\
  !*** ./glTF/2.0/Extensions/KHR_texture_transform.ts ***!
  \******************************************************/
/*! exports provided: KHR_texture_transform */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return KHR_texture_transform; });
/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFExporter */ "./glTF/2.0/glTFExporter.ts");
/* harmony import */ var _shaders_textureTransform_fragment__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../shaders/textureTransform.fragment */ "./glTF/2.0/shaders/textureTransform.fragment.ts");



var NAME = "KHR_texture_transform";

/**
 * @hidden
 */
var KHR_texture_transform = /** @class */ (function () {
    function KHR_texture_transform(exporter) {
        this._recordedTextures = [];
        /** Name of this extension */
        this.name = NAME;
        /** Defines whether this extension is enabled */
        this.enabled = true;
        /** Defines whether this extension is required */
        this.required = false;
        /** Reference to the glTF exporter */
        this._wasUsed = false;
    }
    KHR_texture_transform.prototype.dispose = function () {
        for (var _i = 0, _a = this._recordedTextures; _i < _a.length; _i++) {
            var texture = _a[_i];
            texture.dispose();
        }
    };
    Object.defineProperty(KHR_texture_transform.prototype, "wasUsed", {
        /** @hidden */
        get: function () {
            return this._wasUsed;
        },
        enumerable: false,
        configurable: true
    });
    KHR_texture_transform.prototype.postExportTexture = function (context, textureInfo, babylonTexture) {
        var canUseExtension = babylonTexture && ((babylonTexture.uAng === 0 && babylonTexture.wAng === 0 && babylonTexture.vAng === 0) || (babylonTexture.uRotationCenter === 0 && babylonTexture.vRotationCenter === 0));
        if (canUseExtension) {
            var textureTransform = {};
            var transformIsRequired = false;
            if (babylonTexture.uOffset !== 0 || babylonTexture.vOffset !== 0) {
                textureTransform.offset = [babylonTexture.uOffset, babylonTexture.vOffset];
                transformIsRequired = true;
            }
            if (babylonTexture.uScale !== 1 || babylonTexture.vScale !== 1) {
                textureTransform.scale = [babylonTexture.uScale, babylonTexture.vScale];
                transformIsRequired = true;
            }
            if (babylonTexture.wAng !== 0) {
                textureTransform.rotation = babylonTexture.wAng;
                transformIsRequired = true;
            }
            if (babylonTexture.coordinatesIndex !== 0) {
                textureTransform.texCoord = babylonTexture.coordinatesIndex;
                transformIsRequired = true;
            }
            if (!transformIsRequired) {
                return;
            }
            this._wasUsed = true;
            if (!textureInfo.extensions) {
                textureInfo.extensions = {};
            }
            textureInfo.extensions[NAME] = textureTransform;
        }
    };
    KHR_texture_transform.prototype.preExportTextureAsync = function (context, babylonTexture, mimeType) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            var scene = babylonTexture.getScene();
            if (!scene) {
                reject(context + ": \"scene\" is not defined for Babylon texture " + babylonTexture.name + "!");
                return;
            }
            var bakeTextureTransform = false;
            /*
            * The KHR_texture_transform schema only supports rotation around the origin.
            * the texture must be baked to preserve appearance.
            * see: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform#gltf-schema-updates
            */
            if ((babylonTexture.uAng !== 0 || babylonTexture.wAng !== 0 || babylonTexture.vAng !== 0) && (babylonTexture.uRotationCenter !== 0 || babylonTexture.vRotationCenter !== 0)) {
                bakeTextureTransform = true;
            }
            if (!bakeTextureTransform) {
                resolve(babylonTexture);
                return;
            }
            return _this._textureTransformTextureAsync(babylonTexture, scene)
                .then(function (proceduralTexture) {
                resolve(proceduralTexture);
            })
                .catch(function (e) {
                reject(e);
            });
        });
    };
    /**
     * Transform the babylon texture by the offset, rotation and scale parameters using a procedural texture
     * @param babylonTexture
     * @param offset
     * @param rotation
     * @param scale
     * @param scene
     */
    KHR_texture_transform.prototype._textureTransformTextureAsync = function (babylonTexture, scene) {
        var _this = this;
        return new Promise(function (resolve) {
            var proceduralTexture = new babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["ProceduralTexture"]("" + babylonTexture.name, babylonTexture.getSize(), "textureTransform", scene);
            if (!proceduralTexture) {
                babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].Log("Cannot create procedural texture for " + babylonTexture.name + "!");
                resolve(babylonTexture);
            }
            proceduralTexture.reservedDataStore = {
                hidden: true,
                source: babylonTexture
            };
            _this._recordedTextures.push(proceduralTexture);
            proceduralTexture.coordinatesIndex = babylonTexture.coordinatesIndex;
            proceduralTexture.setTexture("textureSampler", babylonTexture);
            proceduralTexture.setMatrix("textureTransformMat", babylonTexture.getTextureMatrix());
            // isReady trigger creation of effect if it doesnt exist yet
            if (proceduralTexture.isReady()) {
                proceduralTexture.render();
                resolve(proceduralTexture);
            }
            else {
                proceduralTexture.getEffect().executeWhenCompiled(function () {
                    proceduralTexture.render();
                    resolve(proceduralTexture);
                });
            }
        });
    };
    return KHR_texture_transform;
}());

_glTFExporter__WEBPACK_IMPORTED_MODULE_1__["_Exporter"].RegisterExtension(NAME, function (exporter) { return new KHR_texture_transform(exporter); });


/***/ }),

/***/ "./glTF/2.0/Extensions/index.ts":
/*!**************************************!*\
  !*** ./glTF/2.0/Extensions/index.ts ***!
  \**************************************/
/*! exports provided: KHR_texture_transform, KHR_lights_punctual, KHR_materials_sheen, KHR_materials_unlit */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_0__["KHR_texture_transform"]; });

/* harmony import */ var _KHR_lights_punctual__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./KHR_lights_punctual */ "./glTF/2.0/Extensions/KHR_lights_punctual.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_lights_punctual", function() { return _KHR_lights_punctual__WEBPACK_IMPORTED_MODULE_1__["KHR_lights_punctual"]; });

/* harmony import */ var _KHR_materials_sheen__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./KHR_materials_sheen */ "./glTF/2.0/Extensions/KHR_materials_sheen.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return _KHR_materials_sheen__WEBPACK_IMPORTED_MODULE_2__["KHR_materials_sheen"]; });

/* harmony import */ var _KHR_materials_unlit__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./KHR_materials_unlit */ "./glTF/2.0/Extensions/KHR_materials_unlit.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return _KHR_materials_unlit__WEBPACK_IMPORTED_MODULE_3__["KHR_materials_unlit"]; });







/***/ }),

/***/ "./glTF/2.0/glTFAnimation.ts":
/*!***********************************!*\
  !*** ./glTF/2.0/glTFAnimation.ts ***!
  \***********************************/
/*! exports provided: _GLTFAnimation */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_GLTFAnimation", function() { return _GLTFAnimation; });
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.vector */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFUtilities */ "./glTF/2.0/glTFUtilities.ts");








/**
 * @hidden
 * Enum for handling in tangent and out tangent.
 */
var _TangentType;
(function (_TangentType) {
    /**
     * Specifies that input tangents are used.
     */
    _TangentType[_TangentType["INTANGENT"] = 0] = "INTANGENT";
    /**
     * Specifies that output tangents are used.
     */
    _TangentType[_TangentType["OUTTANGENT"] = 1] = "OUTTANGENT";
})(_TangentType || (_TangentType = {}));
/**
 * @hidden
 * Utility class for generating glTF animation data from BabylonJS.
 */
var _GLTFAnimation = /** @class */ (function () {
    function _GLTFAnimation() {
    }
    /**
     * @ignore
     *
     * Creates glTF channel animation from BabylonJS animation.
     * @param babylonTransformNode - BabylonJS mesh.
     * @param animation - animation.
     * @param animationChannelTargetPath - The target animation channel.
     * @param convertToRightHandedSystem - Specifies if the values should be converted to right-handed.
     * @param useQuaternion - Specifies if quaternions are used.
     * @returns nullable IAnimationData
     */
    _GLTFAnimation._CreateNodeAnimation = function (babylonTransformNode, animation, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion, animationSampleRate) {
        var inputs = [];
        var outputs = [];
        var keyFrames = animation.getKeys();
        var minMaxKeyFrames = _GLTFAnimation.calculateMinMaxKeyFrames(keyFrames);
        var interpolationOrBake = _GLTFAnimation._DeduceInterpolation(keyFrames, animationChannelTargetPath, useQuaternion);
        var frameDelta = minMaxKeyFrames.max - minMaxKeyFrames.min;
        var interpolation = interpolationOrBake.interpolationType;
        var shouldBakeAnimation = interpolationOrBake.shouldBakeAnimation;
        if (shouldBakeAnimation) {
            _GLTFAnimation._CreateBakedAnimation(babylonTransformNode, animation, animationChannelTargetPath, minMaxKeyFrames.min, minMaxKeyFrames.max, animation.framePerSecond, animationSampleRate, inputs, outputs, minMaxKeyFrames, convertToRightHandedSystem, useQuaternion);
        }
        else {
            if (interpolation === "LINEAR" /* LINEAR */ || interpolation === "STEP" /* STEP */) {
                _GLTFAnimation._CreateLinearOrStepAnimation(babylonTransformNode, animation, animationChannelTargetPath, frameDelta, inputs, outputs, convertToRightHandedSystem, useQuaternion);
            }
            else if (interpolation === "CUBICSPLINE" /* CUBICSPLINE */) {
                _GLTFAnimation._CreateCubicSplineAnimation(babylonTransformNode, animation, animationChannelTargetPath, frameDelta, inputs, outputs, convertToRightHandedSystem, useQuaternion);
            }
            else {
                _GLTFAnimation._CreateBakedAnimation(babylonTransformNode, animation, animationChannelTargetPath, minMaxKeyFrames.min, minMaxKeyFrames.max, animation.framePerSecond, animationSampleRate, inputs, outputs, minMaxKeyFrames, convertToRightHandedSystem, useQuaternion);
            }
        }
        if (inputs.length && outputs.length) {
            var result = {
                inputs: inputs,
                outputs: outputs,
                samplerInterpolation: interpolation,
                inputsMin: shouldBakeAnimation ? minMaxKeyFrames.min : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].FloatRound(minMaxKeyFrames.min / animation.framePerSecond),
                inputsMax: shouldBakeAnimation ? minMaxKeyFrames.max : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].FloatRound(minMaxKeyFrames.max / animation.framePerSecond)
            };
            return result;
        }
        return null;
    };
    _GLTFAnimation._DeduceAnimationInfo = function (animation) {
        var animationChannelTargetPath = null;
        var dataAccessorType = "VEC3" /* VEC3 */;
        var useQuaternion = false;
        var property = animation.targetProperty.split('.');
        switch (property[0]) {
            case 'scaling': {
                animationChannelTargetPath = "scale" /* SCALE */;
                break;
            }
            case 'position': {
                animationChannelTargetPath = "translation" /* TRANSLATION */;
                break;
            }
            case 'rotation': {
                dataAccessorType = "VEC4" /* VEC4 */;
                animationChannelTargetPath = "rotation" /* ROTATION */;
                break;
            }
            case 'rotationQuaternion': {
                dataAccessorType = "VEC4" /* VEC4 */;
                useQuaternion = true;
                animationChannelTargetPath = "rotation" /* ROTATION */;
                break;
            }
            case 'influence': {
                dataAccessorType = "SCALAR" /* SCALAR */;
                animationChannelTargetPath = "weights" /* WEIGHTS */;
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error("Unsupported animatable property " + property[0]);
            }
        }
        if (animationChannelTargetPath) {
            return { animationChannelTargetPath: animationChannelTargetPath, dataAccessorType: dataAccessorType, useQuaternion: useQuaternion };
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error('animation channel target path and data accessor type could be deduced');
        }
        return null;
    };
    /**
     * @ignore
     * Create node animations from the transform node animations
     * @param babylonNode
     * @param runtimeGLTFAnimation
     * @param idleGLTFAnimations
     * @param nodeMap
     * @param nodes
     * @param binaryWriter
     * @param bufferViews
     * @param accessors
     * @param convertToRightHandedSystem
     * @param animationSampleRate
     */
    _GLTFAnimation._CreateNodeAnimationFromNodeAnimations = function (babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, nodes, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, animationSampleRate) {
        var glTFAnimation;
        if (babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TransformNode"]) {
            if (babylonNode.animations) {
                for (var _i = 0, _a = babylonNode.animations; _i < _a.length; _i++) {
                    var animation = _a[_i];
                    var animationInfo = _GLTFAnimation._DeduceAnimationInfo(animation);
                    if (animationInfo) {
                        glTFAnimation = {
                            name: animation.name,
                            samplers: [],
                            channels: []
                        };
                        _GLTFAnimation.AddAnimation("" + animation.name, animation.hasRunningRuntimeAnimations ? runtimeGLTFAnimation : glTFAnimation, babylonNode, animation, animationInfo.dataAccessorType, animationInfo.animationChannelTargetPath, nodeMap, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, animationInfo.useQuaternion, animationSampleRate);
                        if (glTFAnimation.samplers.length && glTFAnimation.channels.length) {
                            idleGLTFAnimations.push(glTFAnimation);
                        }
                    }
                }
            }
        }
    };
    /**
     * @ignore
     * Create individual morph animations from the mesh's morph target animation tracks
     * @param babylonNode
     * @param runtimeGLTFAnimation
     * @param idleGLTFAnimations
     * @param nodeMap
     * @param nodes
     * @param binaryWriter
     * @param bufferViews
     * @param accessors
     * @param convertToRightHandedSystem
     * @param animationSampleRate
     */
    _GLTFAnimation._CreateMorphTargetAnimationFromMorphTargetAnimations = function (babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, nodes, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, animationSampleRate) {
        var glTFAnimation;
        if (babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Mesh"]) {
            var morphTargetManager = babylonNode.morphTargetManager;
            if (morphTargetManager) {
                for (var i = 0; i < morphTargetManager.numTargets; ++i) {
                    var morphTarget = morphTargetManager.getTarget(i);
                    for (var _i = 0, _a = morphTarget.animations; _i < _a.length; _i++) {
                        var animation = _a[_i];
                        var combinedAnimation = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"]("" + animation.name, "influence", animation.framePerSecond, animation.dataType, animation.loopMode, animation.enableBlending);
                        var combinedAnimationKeys = [];
                        var animationKeys = animation.getKeys();
                        for (var j = 0; j < animationKeys.length; ++j) {
                            var animationKey = animationKeys[j];
                            for (var k = 0; k < morphTargetManager.numTargets; ++k) {
                                if (k == i) {
                                    combinedAnimationKeys.push(animationKey);
                                }
                                else {
                                    combinedAnimationKeys.push({ frame: animationKey.frame, value: 0 });
                                }
                            }
                        }
                        combinedAnimation.setKeys(combinedAnimationKeys);
                        var animationInfo = _GLTFAnimation._DeduceAnimationInfo(combinedAnimation);
                        if (animationInfo) {
                            glTFAnimation = {
                                name: combinedAnimation.name,
                                samplers: [],
                                channels: []
                            };
                            _GLTFAnimation.AddAnimation(animation.name, animation.hasRunningRuntimeAnimations ? runtimeGLTFAnimation : glTFAnimation, babylonNode, combinedAnimation, animationInfo.dataAccessorType, animationInfo.animationChannelTargetPath, nodeMap, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, animationInfo.useQuaternion, animationSampleRate, morphTargetManager.numTargets);
                            if (glTFAnimation.samplers.length && glTFAnimation.channels.length) {
                                idleGLTFAnimations.push(glTFAnimation);
                            }
                        }
                    }
                }
            }
        }
    };
    /**
     * @ignore
     * Create node and morph animations from the animation groups
     * @param babylonScene
     * @param glTFAnimations
     * @param nodeMap
     * @param nodes
     * @param binaryWriter
     * @param bufferViews
     * @param accessors
     * @param convertToRightHandedSystemMap
     * @param animationSampleRate
     */
    _GLTFAnimation._CreateNodeAndMorphAnimationFromAnimationGroups = function (babylonScene, glTFAnimations, nodeMap, nodes, binaryWriter, bufferViews, accessors, convertToRightHandedSystemMap, animationSampleRate) {
        var _a;
        var glTFAnimation;
        if (babylonScene.animationGroups) {
            var animationGroups = babylonScene.animationGroups;
            var _loop_1 = function (animationGroup) {
                var morphAnimations = new Map();
                var sampleAnimations = new Map();
                var morphAnimationMeshes = new Set();
                var animationGroupFrameDiff = animationGroup.to - animationGroup.from;
                glTFAnimation = {
                    name: animationGroup.name,
                    channels: [],
                    samplers: []
                };
                var _loop_2 = function (i) {
                    var targetAnimation = animationGroup.targetedAnimations[i];
                    var target = targetAnimation.target;
                    var animation = targetAnimation.animation;
                    if (target instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TransformNode"] || target.length === 1 && target[0] instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TransformNode"]) {
                        var animationInfo = _GLTFAnimation._DeduceAnimationInfo(targetAnimation.animation);
                        if (animationInfo) {
                            var babylonTransformNode = target instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TransformNode"] ? target : target[0];
                            var convertToRightHandedSystem = convertToRightHandedSystemMap[babylonTransformNode.uniqueId];
                            _GLTFAnimation.AddAnimation("" + animation.name, glTFAnimation, babylonTransformNode, animation, animationInfo.dataAccessorType, animationInfo.animationChannelTargetPath, nodeMap, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, animationInfo.useQuaternion, animationSampleRate);
                        }
                    }
                    else if (target instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["MorphTarget"] || target.length === 1 && target[0] instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["MorphTarget"]) {
                        var animationInfo = _GLTFAnimation._DeduceAnimationInfo(targetAnimation.animation);
                        if (animationInfo) {
                            var babylonMorphTarget_1 = target instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["MorphTarget"] ? target : target[0];
                            if (babylonMorphTarget_1) {
                                var babylonMorphTargetManager_1 = babylonScene.morphTargetManagers.find(function (morphTargetManager) {
                                    for (var j = 0; j < morphTargetManager.numTargets; ++j) {
                                        if (morphTargetManager.getTarget(j) === babylonMorphTarget_1) {
                                            return true;
                                        }
                                    }
                                    return false;
                                });
                                if (babylonMorphTargetManager_1) {
                                    var babylonMesh = babylonScene.meshes.find(function (mesh) {
                                        return mesh.morphTargetManager === babylonMorphTargetManager_1;
                                    });
                                    if (babylonMesh) {
                                        if (!morphAnimations.has(babylonMesh)) {
                                            morphAnimations.set(babylonMesh, new Map());
                                        }
                                        (_a = morphAnimations.get(babylonMesh)) === null || _a === void 0 ? void 0 : _a.set(babylonMorphTarget_1, animation);
                                        morphAnimationMeshes.add(babylonMesh);
                                        sampleAnimations.set(babylonMesh, animation);
                                    }
                                }
                            }
                        }
                    }
                };
                for (var i = 0; i < animationGroup.targetedAnimations.length; ++i) {
                    _loop_2(i);
                }
                morphAnimationMeshes.forEach(function (mesh) {
                    var morphTargetManager = mesh.morphTargetManager;
                    var combinedAnimationGroup = null;
                    var animationKeys = [];
                    var sampleAnimation = sampleAnimations.get(mesh);
                    var sampleAnimationKeys = sampleAnimation.getKeys();
                    var numAnimationKeys = sampleAnimationKeys.length;
                    /*
                        Due to how glTF expects morph target animation data to be formatted, we need to rearrange the individual morph target animation tracks,
                        such that we have a single animation, where a given keyframe input value has successive output values for each morph target belonging to the manager.
                        See: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations

                        We do this via constructing a new Animation track, and interleaving the frames of each morph target animation track in the current Animation Group
                        We reuse the Babylon Animation data structure for ease of handling export of cubic spline animation keys, and to reuse the
                        existing _GLTFAnimation.AddAnimation codepath with minimal modification, however the constructed Babylon Animation is NOT intended for use in-engine.
                    */
                    for (var i = 0; i < numAnimationKeys; ++i) {
                        for (var j = 0; j < morphTargetManager.numTargets; ++j) {
                            var morphTarget = morphTargetManager.getTarget(j);
                            var animationsByMorphTarget = morphAnimations.get(mesh);
                            if (animationsByMorphTarget) {
                                var morphTargetAnimation = animationsByMorphTarget.get(morphTarget);
                                if (morphTargetAnimation) {
                                    if (!combinedAnimationGroup) {
                                        combinedAnimationGroup = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"](animationGroup.name + "_" + mesh.name + "_MorphWeightAnimation", "influence", morphTargetAnimation.framePerSecond, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"].ANIMATIONTYPE_FLOAT, morphTargetAnimation.loopMode, morphTargetAnimation.enableBlending);
                                    }
                                    animationKeys.push(morphTargetAnimation.getKeys()[i]);
                                }
                                else {
                                    animationKeys.push({ frame: animationGroup.from + (animationGroupFrameDiff / numAnimationKeys) * i,
                                        value: morphTarget.influence,
                                        inTangent: sampleAnimationKeys[0].inTangent ? 0 : undefined,
                                        outTangent: sampleAnimationKeys[0].outTangent ? 0 : undefined
                                    });
                                }
                            }
                        }
                    }
                    combinedAnimationGroup.setKeys(animationKeys);
                    var animationInfo = _GLTFAnimation._DeduceAnimationInfo(combinedAnimationGroup);
                    if (animationInfo) {
                        _GLTFAnimation.AddAnimation(animationGroup.name + "_" + mesh.name + "_MorphWeightAnimation", glTFAnimation, mesh, combinedAnimationGroup, animationInfo.dataAccessorType, animationInfo.animationChannelTargetPath, nodeMap, binaryWriter, bufferViews, accessors, false, animationInfo.useQuaternion, animationSampleRate, morphTargetManager === null || morphTargetManager === void 0 ? void 0 : morphTargetManager.numTargets);
                    }
                });
                if (glTFAnimation.channels.length && glTFAnimation.samplers.length) {
                    glTFAnimations.push(glTFAnimation);
                }
            };
            for (var _i = 0, animationGroups_1 = animationGroups; _i < animationGroups_1.length; _i++) {
                var animationGroup = animationGroups_1[_i];
                _loop_1(animationGroup);
            }
        }
    };
    _GLTFAnimation.AddAnimation = function (name, glTFAnimation, babylonTransformNode, animation, dataAccessorType, animationChannelTargetPath, nodeMap, binaryWriter, bufferViews, accessors, convertToRightHandedSystem, useQuaternion, animationSampleRate, morphAnimationChannels) {
        var animationData = _GLTFAnimation._CreateNodeAnimation(babylonTransformNode, animation, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion, animationSampleRate);
        var bufferView;
        var accessor;
        var keyframeAccessorIndex;
        var dataAccessorIndex;
        var outputLength;
        var animationSampler;
        var animationChannel;
        if (animationData) {
            /*
            * Now that we have the glTF converted morph target animation data,
            * we can remove redundant input data so that we have n input frames,
            * and morphAnimationChannels * n output frames
            */
            if (morphAnimationChannels) {
                var index = 0;
                var currentInput = 0;
                var newInputs = [];
                while (animationData.inputs.length > 0) {
                    currentInput = animationData.inputs.shift();
                    if (index % morphAnimationChannels == 0) {
                        newInputs.push(currentInput);
                    }
                    index++;
                }
                animationData.inputs = newInputs;
            }
            var nodeIndex = nodeMap[babylonTransformNode.uniqueId];
            // Creates buffer view and accessor for key frames.
            var byteLength = animationData.inputs.length * 4;
            bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, undefined, name + "  keyframe data view");
            bufferViews.push(bufferView);
            animationData.inputs.forEach(function (input) {
                binaryWriter.setFloat32(input);
            });
            accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._CreateAccessor(bufferViews.length - 1, name + "  keyframes", "SCALAR" /* SCALAR */, 5126 /* FLOAT */, animationData.inputs.length, null, [animationData.inputsMin], [animationData.inputsMax]);
            accessors.push(accessor);
            keyframeAccessorIndex = accessors.length - 1;
            // create bufferview and accessor for keyed values.
            outputLength = animationData.outputs.length;
            byteLength = _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetDataAccessorElementCount(dataAccessorType) * 4 * animationData.outputs.length;
            // check for in and out tangents
            bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, undefined, name + "  data view");
            bufferViews.push(bufferView);
            animationData.outputs.forEach(function (output) {
                output.forEach(function (entry) {
                    binaryWriter.setFloat32(entry);
                });
            });
            accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._CreateAccessor(bufferViews.length - 1, name + "  data", dataAccessorType, 5126 /* FLOAT */, outputLength, null, null, null);
            accessors.push(accessor);
            dataAccessorIndex = accessors.length - 1;
            // create sampler
            animationSampler = {
                interpolation: animationData.samplerInterpolation,
                input: keyframeAccessorIndex,
                output: dataAccessorIndex
            };
            glTFAnimation.samplers.push(animationSampler);
            // create channel
            animationChannel = {
                sampler: glTFAnimation.samplers.length - 1,
                target: {
                    node: nodeIndex,
                    path: animationChannelTargetPath
                }
            };
            glTFAnimation.channels.push(animationChannel);
        }
    };
    /**
     * Create a baked animation
     * @param babylonTransformNode BabylonJS mesh
     * @param animation BabylonJS animation corresponding to the BabylonJS mesh
     * @param animationChannelTargetPath animation target channel
     * @param minFrame minimum animation frame
     * @param maxFrame maximum animation frame
     * @param fps frames per second of the animation
     * @param inputs input key frames of the animation
     * @param outputs output key frame data of the animation
     * @param convertToRightHandedSystem converts the values to right-handed
     * @param useQuaternion specifies if quaternions should be used
     */
    _GLTFAnimation._CreateBakedAnimation = function (babylonTransformNode, animation, animationChannelTargetPath, minFrame, maxFrame, fps, sampleRate, inputs, outputs, minMaxFrames, convertToRightHandedSystem, useQuaternion) {
        var value;
        var quaternionCache = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].Identity();
        var previousTime = null;
        var time;
        var maxUsedFrame = null;
        var currKeyFrame = null;
        var nextKeyFrame = null;
        var prevKeyFrame = null;
        var endFrame = null;
        minMaxFrames.min = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].FloatRound(minFrame / fps);
        var keyFrames = animation.getKeys();
        for (var i = 0, length_1 = keyFrames.length; i < length_1; ++i) {
            endFrame = null;
            currKeyFrame = keyFrames[i];
            if (i + 1 < length_1) {
                nextKeyFrame = keyFrames[i + 1];
                if (currKeyFrame.value.equals && currKeyFrame.value.equals(nextKeyFrame.value) || currKeyFrame.value === nextKeyFrame.value) {
                    if (i === 0) { // set the first frame to itself
                        endFrame = currKeyFrame.frame;
                    }
                    else {
                        continue;
                    }
                }
                else {
                    endFrame = nextKeyFrame.frame;
                }
            }
            else {
                // at the last key frame
                prevKeyFrame = keyFrames[i - 1];
                if (currKeyFrame.value.equals && currKeyFrame.value.equals(prevKeyFrame.value) || currKeyFrame.value === prevKeyFrame.value) {
                    continue;
                }
                else {
                    endFrame = maxFrame;
                }
            }
            if (endFrame) {
                for (var f = currKeyFrame.frame; f <= endFrame; f += sampleRate) {
                    time = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].FloatRound(f / fps);
                    if (time === previousTime) {
                        continue;
                    }
                    previousTime = time;
                    maxUsedFrame = time;
                    var state = {
                        key: 0,
                        repeatCount: 0,
                        loopMode: animation.loopMode
                    };
                    value = animation._interpolate(f, state);
                    _GLTFAnimation._SetInterpolatedValue(babylonTransformNode, value, time, animation, animationChannelTargetPath, quaternionCache, inputs, outputs, convertToRightHandedSystem, useQuaternion);
                }
            }
        }
        if (maxUsedFrame) {
            minMaxFrames.max = maxUsedFrame;
        }
    };
    _GLTFAnimation._ConvertFactorToVector3OrQuaternion = function (factor, babylonTransformNode, animation, animationType, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion) {
        var property;
        var componentName;
        var value = null;
        var basePositionRotationOrScale = _GLTFAnimation._GetBasePositionRotationOrScale(babylonTransformNode, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion);
        if (animationType === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"].ANIMATIONTYPE_FLOAT) { // handles single component x, y, z or w component animation by using a base property and animating over a component.
            property = animation.targetProperty.split('.');
            componentName = property ? property[1] : ''; // x, y, or z component
            value = useQuaternion ? babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray(basePositionRotationOrScale).normalize() : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].FromArray(basePositionRotationOrScale);
            switch (componentName) {
                case 'x': {
                    value[componentName] = (convertToRightHandedSystem && useQuaternion && (animationChannelTargetPath !== "scale" /* SCALE */)) ? -factor : factor;
                    break;
                }
                case 'y': {
                    value[componentName] = (convertToRightHandedSystem && useQuaternion && (animationChannelTargetPath !== "scale" /* SCALE */)) ? -factor : factor;
                    break;
                }
                case 'z': {
                    value[componentName] = (convertToRightHandedSystem && !useQuaternion && (animationChannelTargetPath !== "scale" /* SCALE */)) ? -factor : factor;
                    break;
                }
                case 'w': {
                    value.w = factor;
                    break;
                }
                default: {
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error("glTFAnimation: Unsupported component type \"" + componentName + "\" for scale animation!");
                }
            }
        }
        return value;
    };
    _GLTFAnimation._SetInterpolatedValue = function (babylonTransformNode, value, time, animation, animationChannelTargetPath, quaternionCache, inputs, outputs, convertToRightHandedSystem, useQuaternion) {
        var animationType = animation.dataType;
        var cacheValue;
        inputs.push(time);
        if (typeof value === "number" && babylonTransformNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TransformNode"]) {
            value = this._ConvertFactorToVector3OrQuaternion(value, babylonTransformNode, animation, animationType, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion);
        }
        if (value) {
            if (animationChannelTargetPath === "rotation" /* ROTATION */) {
                if (useQuaternion) {
                    quaternionCache = value;
                }
                else {
                    cacheValue = value;
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].RotationYawPitchRollToRef(cacheValue.y, cacheValue.x, cacheValue.z, quaternionCache);
                }
                if (convertToRightHandedSystem) {
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionFromRef(quaternionCache);
                    if (!babylonTransformNode.parent) {
                        quaternionCache = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(quaternionCache);
                    }
                }
                outputs.push(quaternionCache.asArray());
            }
            else if (animationChannelTargetPath === "weights" /* WEIGHTS */) {
                outputs.push([value]);
            }
            else { // scaling and position animation
                cacheValue = value;
                if (convertToRightHandedSystem && (animationChannelTargetPath !== "scale" /* SCALE */)) {
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedPositionVector3FromRef(cacheValue);
                    if (!babylonTransformNode.parent) {
                        cacheValue.x *= -1;
                        cacheValue.z *= -1;
                    }
                }
                outputs.push(cacheValue.asArray());
            }
        }
    };
    /**
     * Creates linear animation from the animation key frames
     * @param babylonTransformNode BabylonJS mesh
     * @param animation BabylonJS animation
     * @param animationChannelTargetPath The target animation channel
     * @param frameDelta The difference between the last and first frame of the animation
     * @param inputs Array to store the key frame times
     * @param outputs Array to store the key frame data
     * @param convertToRightHandedSystem Specifies if the position data should be converted to right handed
     * @param useQuaternion Specifies if quaternions are used in the animation
     */
    _GLTFAnimation._CreateLinearOrStepAnimation = function (babylonTransformNode, animation, animationChannelTargetPath, frameDelta, inputs, outputs, convertToRightHandedSystem, useQuaternion) {
        for (var _i = 0, _a = animation.getKeys(); _i < _a.length; _i++) {
            var keyFrame = _a[_i];
            inputs.push(keyFrame.frame / animation.framePerSecond); // keyframes in seconds.
            _GLTFAnimation._AddKeyframeValue(keyFrame, animation, outputs, animationChannelTargetPath, babylonTransformNode, convertToRightHandedSystem, useQuaternion);
        }
    };
    /**
     * Creates cubic spline animation from the animation key frames
     * @param babylonTransformNode BabylonJS mesh
     * @param animation BabylonJS animation
     * @param animationChannelTargetPath The target animation channel
     * @param frameDelta The difference between the last and first frame of the animation
     * @param inputs Array to store the key frame times
     * @param outputs Array to store the key frame data
     * @param convertToRightHandedSystem Specifies if the position data should be converted to right handed
     * @param useQuaternion Specifies if quaternions are used in the animation
     */
    _GLTFAnimation._CreateCubicSplineAnimation = function (babylonTransformNode, animation, animationChannelTargetPath, frameDelta, inputs, outputs, convertToRightHandedSystem, useQuaternion) {
        animation.getKeys().forEach(function (keyFrame) {
            inputs.push(keyFrame.frame / animation.framePerSecond); // keyframes in seconds.
            _GLTFAnimation.AddSplineTangent(babylonTransformNode, _TangentType.INTANGENT, outputs, animationChannelTargetPath, "CUBICSPLINE" /* CUBICSPLINE */, keyFrame, frameDelta, useQuaternion, convertToRightHandedSystem);
            _GLTFAnimation._AddKeyframeValue(keyFrame, animation, outputs, animationChannelTargetPath, babylonTransformNode, convertToRightHandedSystem, useQuaternion);
            _GLTFAnimation.AddSplineTangent(babylonTransformNode, _TangentType.OUTTANGENT, outputs, animationChannelTargetPath, "CUBICSPLINE" /* CUBICSPLINE */, keyFrame, frameDelta, useQuaternion, convertToRightHandedSystem);
        });
    };
    _GLTFAnimation._GetBasePositionRotationOrScale = function (babylonTransformNode, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion) {
        var basePositionRotationOrScale;
        if (animationChannelTargetPath === "rotation" /* ROTATION */) {
            if (useQuaternion) {
                if (babylonTransformNode.rotationQuaternion) {
                    basePositionRotationOrScale = babylonTransformNode.rotationQuaternion.asArray();
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionArrayFromRef(basePositionRotationOrScale);
                        if (!babylonTransformNode.parent) {
                            basePositionRotationOrScale = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray(basePositionRotationOrScale)).asArray();
                        }
                    }
                }
                else {
                    basePositionRotationOrScale = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].Identity().asArray();
                }
            }
            else {
                basePositionRotationOrScale = babylonTransformNode.rotation.asArray();
                _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedNormalArray3FromRef(basePositionRotationOrScale);
            }
        }
        else if (animationChannelTargetPath === "translation" /* TRANSLATION */) {
            basePositionRotationOrScale = babylonTransformNode.position.asArray();
            if (convertToRightHandedSystem) {
                _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedPositionArray3FromRef(basePositionRotationOrScale);
            }
        }
        else { // scale
            basePositionRotationOrScale = babylonTransformNode.scaling.asArray();
        }
        return basePositionRotationOrScale;
    };
    /**
     * Adds a key frame value
     * @param keyFrame
     * @param animation
     * @param outputs
     * @param animationChannelTargetPath
     * @param basePositionRotationOrScale
     * @param convertToRightHandedSystem
     * @param useQuaternion
     */
    _GLTFAnimation._AddKeyframeValue = function (keyFrame, animation, outputs, animationChannelTargetPath, babylonTransformNode, convertToRightHandedSystem, useQuaternion) {
        var value;
        var newPositionRotationOrScale;
        var animationType = animation.dataType;
        if (animationType === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"].ANIMATIONTYPE_VECTOR3) {
            value = keyFrame.value.asArray();
            if (animationChannelTargetPath === "rotation" /* ROTATION */) {
                var array = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].FromArray(value);
                var rotationQuaternion = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].RotationYawPitchRoll(array.y, array.x, array.z);
                if (convertToRightHandedSystem) {
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionFromRef(rotationQuaternion);
                    if (!babylonTransformNode.parent) {
                        rotationQuaternion = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(rotationQuaternion);
                    }
                }
                value = rotationQuaternion.asArray();
            }
            else if (animationChannelTargetPath === "translation" /* TRANSLATION */) {
                if (convertToRightHandedSystem) {
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedNormalArray3FromRef(value);
                    if (!babylonTransformNode.parent) {
                        value[0] *= -1;
                        value[2] *= -1;
                    }
                }
            }
            outputs.push(value); // scale  vector.
        }
        else if (animationType === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"].ANIMATIONTYPE_FLOAT) {
            if (animationChannelTargetPath === "weights" /* WEIGHTS */) {
                outputs.push([keyFrame.value]);
            }
            else { // handles single component x, y, z or w component animation by using a base property and animating over a component.
                newPositionRotationOrScale = this._ConvertFactorToVector3OrQuaternion(keyFrame.value, babylonTransformNode, animation, animationType, animationChannelTargetPath, convertToRightHandedSystem, useQuaternion);
                if (newPositionRotationOrScale) {
                    if (animationChannelTargetPath === "rotation" /* ROTATION */) {
                        var posRotScale = useQuaternion ? newPositionRotationOrScale : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].RotationYawPitchRoll(newPositionRotationOrScale.y, newPositionRotationOrScale.x, newPositionRotationOrScale.z).normalize();
                        if (convertToRightHandedSystem) {
                            _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionFromRef(posRotScale);
                            if (!babylonTransformNode.parent) {
                                posRotScale = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(posRotScale);
                            }
                        }
                        outputs.push(posRotScale.asArray());
                    }
                    else if (animationChannelTargetPath === "translation" /* TRANSLATION */) {
                        if (convertToRightHandedSystem) {
                            _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedNormalVector3FromRef(newPositionRotationOrScale);
                            if (!babylonTransformNode.parent) {
                                newPositionRotationOrScale.x *= -1;
                                newPositionRotationOrScale.z *= -1;
                            }
                        }
                    }
                    outputs.push(newPositionRotationOrScale.asArray());
                }
            }
        }
        else if (animationType === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Animation"].ANIMATIONTYPE_QUATERNION) {
            value = keyFrame.value.normalize().asArray();
            if (convertToRightHandedSystem) {
                _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionArrayFromRef(value);
                if (!babylonTransformNode.parent) {
                    value = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray(value)).asArray();
                }
            }
            outputs.push(value);
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error('glTFAnimation: Unsupported key frame values for animation!');
        }
    };
    /**
     * Determine the interpolation based on the key frames
     * @param keyFrames
     * @param animationChannelTargetPath
     * @param useQuaternion
     */
    _GLTFAnimation._DeduceInterpolation = function (keyFrames, animationChannelTargetPath, useQuaternion) {
        var interpolationType;
        var shouldBakeAnimation = false;
        var key;
        if (animationChannelTargetPath === "rotation" /* ROTATION */ && !useQuaternion) {
            return { interpolationType: "LINEAR" /* LINEAR */, shouldBakeAnimation: true };
        }
        for (var i = 0, length_2 = keyFrames.length; i < length_2; ++i) {
            key = keyFrames[i];
            if (key.inTangent || key.outTangent) {
                if (interpolationType) {
                    if (interpolationType !== "CUBICSPLINE" /* CUBICSPLINE */) {
                        interpolationType = "LINEAR" /* LINEAR */;
                        shouldBakeAnimation = true;
                        break;
                    }
                }
                else {
                    interpolationType = "CUBICSPLINE" /* CUBICSPLINE */;
                }
            }
            else {
                if (interpolationType) {
                    if (interpolationType === "CUBICSPLINE" /* CUBICSPLINE */ ||
                        (key.interpolation && (key.interpolation === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["AnimationKeyInterpolation"].STEP) && interpolationType !== "STEP" /* STEP */)) {
                        interpolationType = "LINEAR" /* LINEAR */;
                        shouldBakeAnimation = true;
                        break;
                    }
                }
                else {
                    if (key.interpolation && (key.interpolation === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["AnimationKeyInterpolation"].STEP)) {
                        interpolationType = "STEP" /* STEP */;
                    }
                    else {
                        interpolationType = "LINEAR" /* LINEAR */;
                    }
                }
            }
        }
        if (!interpolationType) {
            interpolationType = "LINEAR" /* LINEAR */;
        }
        return { interpolationType: interpolationType, shouldBakeAnimation: shouldBakeAnimation };
    };
    /**
     * Adds an input tangent or output tangent to the output data
     * If an input tangent or output tangent is missing, it uses the zero vector or zero quaternion
     * @param tangentType Specifies which type of tangent to handle (inTangent or outTangent)
     * @param outputs The animation data by keyframe
     * @param animationChannelTargetPath The target animation channel
     * @param interpolation The interpolation type
     * @param keyFrame The key frame with the animation data
     * @param frameDelta Time difference between two frames used to scale the tangent by the frame delta
     * @param useQuaternion Specifies if quaternions are used
     * @param convertToRightHandedSystem Specifies if the values should be converted to right-handed
     */
    _GLTFAnimation.AddSplineTangent = function (babylonTransformNode, tangentType, outputs, animationChannelTargetPath, interpolation, keyFrame, frameDelta, useQuaternion, convertToRightHandedSystem) {
        var tangent;
        var tangentValue = tangentType === _TangentType.INTANGENT ? keyFrame.inTangent : keyFrame.outTangent;
        if (interpolation === "CUBICSPLINE" /* CUBICSPLINE */) {
            if (animationChannelTargetPath === "rotation" /* ROTATION */) {
                if (tangentValue) {
                    if (useQuaternion) {
                        tangent = tangentValue.asArray();
                    }
                    else {
                        var array = tangentValue;
                        tangent = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].RotationYawPitchRoll(array.y, array.x, array.z).asArray();
                    }
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedQuaternionArrayFromRef(tangent);
                        if (!babylonTransformNode.parent) {
                            tangent = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Quaternion"].FromArray(tangent)).asArray();
                        }
                    }
                }
                else {
                    tangent = [0, 0, 0, 0];
                }
            }
            else if (animationChannelTargetPath === "weights" /* WEIGHTS */) {
                if (tangentValue) {
                    tangent = [tangentValue];
                }
                else {
                    tangent = [0];
                }
            }
            else {
                if (tangentValue) {
                    tangent = tangentValue.asArray();
                    if (convertToRightHandedSystem) {
                        if (animationChannelTargetPath === "translation" /* TRANSLATION */) {
                            _glTFUtilities__WEBPACK_IMPORTED_MODULE_1__["_GLTFUtilities"]._GetRightHandedPositionArray3FromRef(tangent);
                            if (!babylonTransformNode.parent) {
                                tangent[0] *= -1; // x
                                tangent[2] *= -1; // z
                            }
                        }
                    }
                }
                else {
                    tangent = [0, 0, 0];
                }
            }
            outputs.push(tangent);
        }
    };
    /**
     * Get the minimum and maximum key frames' frame values
     * @param keyFrames animation key frames
     * @returns the minimum and maximum key frame value
     */
    _GLTFAnimation.calculateMinMaxKeyFrames = function (keyFrames) {
        var min = Infinity;
        var max = -Infinity;
        keyFrames.forEach(function (keyFrame) {
            min = Math.min(min, keyFrame.frame);
            max = Math.max(max, keyFrame.frame);
        });
        return { min: min, max: max };
    };
    return _GLTFAnimation;
}());



/***/ }),

/***/ "./glTF/2.0/glTFData.ts":
/*!******************************!*\
  !*** ./glTF/2.0/glTFData.ts ***!
  \******************************/
/*! exports provided: GLTFData */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFData", function() { return GLTFData; });
/**
 * Class for holding and downloading glTF file data
 */
var GLTFData = /** @class */ (function () {
    /**
     * Initializes the glTF file object
     */
    function GLTFData() {
        this.glTFFiles = {};
    }
    /**
     * Downloads the glTF data as files based on their names and data
     */
    GLTFData.prototype.downloadFiles = function () {
        /**
        * Checks for a matching suffix at the end of a string (for ES5 and lower)
        * @param str Source string
        * @param suffix Suffix to search for in the source string
        * @returns Boolean indicating whether the suffix was found (true) or not (false)
        */
        function endsWith(str, suffix) {
            return str.indexOf(suffix, str.length - suffix.length) !== -1;
        }
        for (var key in this.glTFFiles) {
            var link = document.createElement('a');
            document.body.appendChild(link);
            link.setAttribute("type", "hidden");
            link.download = key;
            var blob = this.glTFFiles[key];
            var mimeType = void 0;
            if (endsWith(key, ".glb")) {
                mimeType = { type: "model/gltf-binary" };
            }
            else if (endsWith(key, ".bin")) {
                mimeType = { type: "application/octet-stream" };
            }
            else if (endsWith(key, ".gltf")) {
                mimeType = { type: "model/gltf+json" };
            }
            else if (endsWith(key, ".jpeg" || false)) {
                mimeType = { type: "image/jpeg" /* JPEG */ };
            }
            else if (endsWith(key, ".png")) {
                mimeType = { type: "image/png" /* PNG */ };
            }
            link.href = window.URL.createObjectURL(new Blob([blob], mimeType));
            link.click();
        }
    };
    return GLTFData;
}());



/***/ }),

/***/ "./glTF/2.0/glTFExporter.ts":
/*!**********************************!*\
  !*** ./glTF/2.0/glTFExporter.ts ***!
  \**********************************/
/*! exports provided: _Exporter, _BinaryWriter */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_Exporter", function() { return _Exporter; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_BinaryWriter", function() { return _BinaryWriter; });
/* harmony import */ var tslib__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! tslib */ "../../node_modules/tslib/tslib.es6.js");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math.vector */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__);
/* harmony import */ var _glTFMaterialExporter__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./glTFMaterialExporter */ "./glTF/2.0/glTFMaterialExporter.ts");
/* harmony import */ var _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./glTFUtilities */ "./glTF/2.0/glTFUtilities.ts");
/* harmony import */ var _glTFData__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./glTFData */ "./glTF/2.0/glTFData.ts");
/* harmony import */ var _glTFAnimation__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./glTFAnimation */ "./glTF/2.0/glTFAnimation.ts");


















/**
 * Converts Babylon Scene into glTF 2.0.
 * @hidden
 */
var _Exporter = /** @class */ (function () {
    /**
     * Creates a glTF Exporter instance, which can accept optional exporter options
     * @param babylonScene Babylon scene object
     * @param options Options to modify the behavior of the exporter
     */
    function _Exporter(babylonScene, options) {
        /*
        * Specifies if root Babylon empty nodes that act as a coordinate space transform should be included in export
        */
        this._includeCoordinateSystemConversionNodes = false;
        this._extensions = {};
        this._glTF = {
            asset: { generator: "BabylonJS", version: "2.0" }
        };
        this._babylonScene = babylonScene;
        this._bufferViews = [];
        this._accessors = [];
        this._meshes = [];
        this._scenes = [];
        this._nodes = [];
        this._images = [];
        this._materials = [];
        this._materialMap = [];
        this._textures = [];
        this._samplers = [];
        this._skins = [];
        this._animations = [];
        this._imageData = {};
        this._orderedImageData = [];
        this._options = options || {};
        this._animationSampleRate = options && options.animationSampleRate ? options.animationSampleRate : 1 / 60;
        this._includeCoordinateSystemConversionNodes = options && options.includeCoordinateSystemConversionNodes ? true : false;
        this._glTFMaterialExporter = new _glTFMaterialExporter__WEBPACK_IMPORTED_MODULE_2__["_GLTFMaterialExporter"](this);
        this._loadExtensions();
    }
    _Exporter.prototype._applyExtension = function (node, extensions, index, actionAsync) {
        var _this = this;
        if (index >= extensions.length) {
            return Promise.resolve(node);
        }
        var currentPromise = actionAsync(extensions[index], node);
        if (!currentPromise) {
            return this._applyExtension(node, extensions, index + 1, actionAsync);
        }
        return currentPromise.then(function (newNode) { return _this._applyExtension(newNode, extensions, index + 1, actionAsync); });
    };
    _Exporter.prototype._applyExtensions = function (node, actionAsync) {
        var extensions = [];
        for (var _i = 0, _a = _Exporter._ExtensionNames; _i < _a.length; _i++) {
            var name_1 = _a[_i];
            extensions.push(this._extensions[name_1]);
        }
        return this._applyExtension(node, extensions, 0, actionAsync);
    };
    _Exporter.prototype._extensionsPreExportTextureAsync = function (context, babylonTexture, mimeType) {
        return this._applyExtensions(babylonTexture, function (extension, node) { return extension.preExportTextureAsync && extension.preExportTextureAsync(context, node, mimeType); });
    };
    _Exporter.prototype._extensionsPostExportMeshPrimitiveAsync = function (context, meshPrimitive, babylonSubMesh, binaryWriter) {
        return this._applyExtensions(meshPrimitive, function (extension, node) { return extension.postExportMeshPrimitiveAsync && extension.postExportMeshPrimitiveAsync(context, node, babylonSubMesh, binaryWriter); });
    };
    _Exporter.prototype._extensionsPostExportNodeAsync = function (context, node, babylonNode, nodeMap) {
        return this._applyExtensions(node, function (extension, node) { return extension.postExportNodeAsync && extension.postExportNodeAsync(context, node, babylonNode, nodeMap); });
    };
    _Exporter.prototype._extensionsPostExportMaterialAsync = function (context, material, babylonMaterial) {
        return this._applyExtensions(material, function (extension, node) { return extension.postExportMaterialAsync && extension.postExportMaterialAsync(context, node, babylonMaterial); });
    };
    _Exporter.prototype._extensionsPostExportMaterialAdditionalTextures = function (context, material, babylonMaterial) {
        var output = [];
        for (var _i = 0, _a = _Exporter._ExtensionNames; _i < _a.length; _i++) {
            var name_2 = _a[_i];
            var extension = this._extensions[name_2];
            if (extension.postExportMaterialAdditionalTextures) {
                output.push.apply(output, extension.postExportMaterialAdditionalTextures(context, material, babylonMaterial));
            }
        }
        return output;
    };
    _Exporter.prototype._extensionsPostExportTextures = function (context, textureInfo, babylonTexture) {
        for (var _i = 0, _a = _Exporter._ExtensionNames; _i < _a.length; _i++) {
            var name_3 = _a[_i];
            var extension = this._extensions[name_3];
            if (extension.postExportTexture) {
                extension.postExportTexture(context, textureInfo, babylonTexture);
            }
        }
    };
    _Exporter.prototype._forEachExtensions = function (action) {
        for (var _i = 0, _a = _Exporter._ExtensionNames; _i < _a.length; _i++) {
            var name_4 = _a[_i];
            var extension = this._extensions[name_4];
            if (extension.enabled) {
                action(extension);
            }
        }
    };
    _Exporter.prototype._extensionsOnExporting = function () {
        var _this = this;
        this._forEachExtensions(function (extension) {
            if (extension.wasUsed) {
                if (_this._glTF.extensionsUsed == null) {
                    _this._glTF.extensionsUsed = [];
                }
                if (_this._glTF.extensionsUsed.indexOf(extension.name) === -1) {
                    _this._glTF.extensionsUsed.push(extension.name);
                }
                if (extension.required) {
                    if (_this._glTF.extensionsRequired == null) {
                        _this._glTF.extensionsRequired = [];
                    }
                    if (_this._glTF.extensionsRequired.indexOf(extension.name) === -1) {
                        _this._glTF.extensionsRequired.push(extension.name);
                    }
                }
                if (_this._glTF.extensions == null) {
                    _this._glTF.extensions = {};
                }
                if (extension.onExporting) {
                    extension.onExporting();
                }
            }
        });
    };
    /**
     * Load glTF serializer extensions
     */
    _Exporter.prototype._loadExtensions = function () {
        for (var _i = 0, _a = _Exporter._ExtensionNames; _i < _a.length; _i++) {
            var name_5 = _a[_i];
            var extension = _Exporter._ExtensionFactories[name_5](this);
            this._extensions[name_5] = extension;
        }
    };
    _Exporter.prototype.dispose = function () {
        for (var extensionKey in this._extensions) {
            var extension = this._extensions[extensionKey];
            extension.dispose();
        }
    };
    /**
     * Registers a glTF exporter extension
     * @param name Name of the extension to export
     * @param factory The factory function that creates the exporter extension
     */
    _Exporter.RegisterExtension = function (name, factory) {
        if (_Exporter.UnregisterExtension(name)) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Extension with the name " + name + " already exists");
        }
        _Exporter._ExtensionFactories[name] = factory;
        _Exporter._ExtensionNames.push(name);
    };
    /**
     * Un-registers an exporter extension
     * @param name The name fo the exporter extension
     * @returns A boolean indicating whether the extension has been un-registered
     */
    _Exporter.UnregisterExtension = function (name) {
        if (!_Exporter._ExtensionFactories[name]) {
            return false;
        }
        delete _Exporter._ExtensionFactories[name];
        var index = _Exporter._ExtensionNames.indexOf(name);
        if (index !== -1) {
            _Exporter._ExtensionNames.splice(index, 1);
        }
        return true;
    };
    /**
     * Lazy load a local engine
     */
    _Exporter.prototype._getLocalEngine = function () {
        if (!this._localEngine) {
            var localCanvas = document.createElement('canvas');
            localCanvas.id = "WriteCanvas";
            localCanvas.width = 2048;
            localCanvas.height = 2048;
            this._localEngine = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Engine"](localCanvas, true, { premultipliedAlpha: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].IsSafari(), preserveDrawingBuffer: true });
            this._localEngine.setViewport(new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Viewport"](0, 0, 1, 1));
        }
        return this._localEngine;
    };
    _Exporter.prototype.reorderIndicesBasedOnPrimitiveMode = function (submesh, primitiveMode, babylonIndices, byteOffset, binaryWriter) {
        switch (primitiveMode) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFillMode: {
                if (!byteOffset) {
                    byteOffset = 0;
                }
                for (var i = submesh.indexStart, length_1 = submesh.indexStart + submesh.indexCount; i < length_1; i = i + 3) {
                    var index = byteOffset + i * 4;
                    // swap the second and third indices
                    var secondIndex = binaryWriter.getUInt32(index + 4);
                    var thirdIndex = binaryWriter.getUInt32(index + 8);
                    binaryWriter.setUInt32(thirdIndex, index + 4);
                    binaryWriter.setUInt32(secondIndex, index + 8);
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFanDrawMode: {
                for (var i = submesh.indexStart + submesh.indexCount - 1, start = submesh.indexStart; i >= start; --i) {
                    binaryWriter.setUInt32(babylonIndices[i], byteOffset);
                    byteOffset += 4;
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleStripDrawMode: {
                if (submesh.indexCount >= 3) {
                    binaryWriter.setUInt32(babylonIndices[submesh.indexStart + 2], byteOffset + 4);
                    binaryWriter.setUInt32(babylonIndices[submesh.indexStart + 1], byteOffset + 8);
                }
                break;
            }
        }
    };
    /**
     * Reorders the vertex attribute data based on the primitive mode.  This is necessary when indices are not available and the winding order is
     * clock-wise during export to glTF
     * @param submesh BabylonJS submesh
     * @param primitiveMode Primitive mode of the mesh
     * @param sideOrientation the winding order of the submesh
     * @param vertexBufferKind The type of vertex attribute
     * @param meshAttributeArray The vertex attribute data
     * @param byteOffset The offset to the binary data
     * @param binaryWriter The binary data for the glTF file
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.reorderVertexAttributeDataBasedOnPrimitiveMode = function (submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem) {
        if (convertToRightHandedSystem && sideOrientation === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].ClockWiseSideOrientation) {
            switch (primitiveMode) {
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFillMode: {
                    this.reorderTriangleFillMode(submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem);
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleStripDrawMode: {
                    this.reorderTriangleStripDrawMode(submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem);
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFanDrawMode: {
                    this.reorderTriangleFanMode(submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem);
                    break;
                }
            }
        }
    };
    /**
     * Reorders the vertex attributes in the correct triangle mode order .  This is necessary when indices are not available and the winding order is
     * clock-wise during export to glTF
     * @param submesh BabylonJS submesh
     * @param primitiveMode Primitive mode of the mesh
     * @param sideOrientation the winding order of the submesh
     * @param vertexBufferKind The type of vertex attribute
     * @param meshAttributeArray The vertex attribute data
     * @param byteOffset The offset to the binary data
     * @param binaryWriter The binary data for the glTF file
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.reorderTriangleFillMode = function (submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem) {
        var vertexBuffer = this.getVertexBufferFromMesh(vertexBufferKind, submesh.getMesh());
        if (vertexBuffer) {
            var stride = vertexBuffer.byteStride / babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].GetTypeByteLength(vertexBuffer.type);
            if (submesh.verticesCount % 3 !== 0) {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('The submesh vertices for the triangle fill mode is not divisible by 3!');
            }
            else {
                var vertexData = [];
                var index = 0;
                switch (vertexBufferKind) {
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind:
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                        for (var x = submesh.verticesStart; x < submesh.verticesStart + submesh.verticesCount; x = x + 3) {
                            index = x * stride;
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + 2 * stride));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + stride));
                        }
                        break;
                    }
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                        for (var x = submesh.verticesStart; x < submesh.verticesStart + submesh.verticesCount; x = x + 3) {
                            index = x * stride;
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index + 2 * stride));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index + stride));
                        }
                        break;
                    }
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind: {
                        var size = vertexBuffer.getSize();
                        for (var x = submesh.verticesStart; x < submesh.verticesStart + submesh.verticesCount; x = x + size) {
                            index = x * stride;
                            if (size === 4) {
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index));
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index + 2 * stride));
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index + stride));
                            }
                            else {
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index));
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + 2 * stride));
                                vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + stride));
                            }
                        }
                        break;
                    }
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind:
                    case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind: {
                        for (var x = submesh.verticesStart; x < submesh.verticesStart + submesh.verticesCount; x = x + 3) {
                            index = x * stride;
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"].FromArray(meshAttributeArray, index));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"].FromArray(meshAttributeArray, index + 2 * stride));
                            vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"].FromArray(meshAttributeArray, index + stride));
                        }
                        break;
                    }
                    default: {
                        babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("Unsupported Vertex Buffer type: " + vertexBufferKind);
                    }
                }
                this.writeVertexAttributeData(vertexData, byteOffset, vertexBufferKind, meshAttributeArray, binaryWriter, convertToRightHandedSystem);
            }
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("reorderTriangleFillMode: Vertex Buffer Kind " + vertexBufferKind + " not present!");
        }
    };
    /**
     * Reorders the vertex attributes in the correct triangle strip order.  This is necessary when indices are not available and the winding order is
     * clock-wise during export to glTF
     * @param submesh BabylonJS submesh
     * @param primitiveMode Primitive mode of the mesh
     * @param sideOrientation the winding order of the submesh
     * @param vertexBufferKind The type of vertex attribute
     * @param meshAttributeArray The vertex attribute data
     * @param byteOffset The offset to the binary data
     * @param binaryWriter The binary data for the glTF file
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.reorderTriangleStripDrawMode = function (submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem) {
        var vertexBuffer = this.getVertexBufferFromMesh(vertexBufferKind, submesh.getMesh());
        if (vertexBuffer) {
            var stride = vertexBuffer.byteStride / babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].GetTypeByteLength(vertexBuffer.type);
            var vertexData = [];
            var index = 0;
            switch (vertexBufferKind) {
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind:
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                    index = submesh.verticesStart;
                    vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + 2 * stride));
                    vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index + stride));
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexBuffer.getSize() === 4 ? vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index)) : vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind:
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                default: {
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("Unsupported Vertex Buffer type: " + vertexBufferKind);
                }
            }
            this.writeVertexAttributeData(vertexData, byteOffset + 12, vertexBufferKind, meshAttributeArray, binaryWriter, convertToRightHandedSystem);
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("reorderTriangleStripDrawMode: Vertex buffer kind " + vertexBufferKind + " not present!");
        }
    };
    /**
     * Reorders the vertex attributes in the correct triangle fan order.  This is necessary when indices are not available and the winding order is
     * clock-wise during export to glTF
     * @param submesh BabylonJS submesh
     * @param primitiveMode Primitive mode of the mesh
     * @param sideOrientation the winding order of the submesh
     * @param vertexBufferKind The type of vertex attribute
     * @param meshAttributeArray The vertex attribute data
     * @param byteOffset The offset to the binary data
     * @param binaryWriter The binary data for the glTF file
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.reorderTriangleFanMode = function (submesh, primitiveMode, sideOrientation, vertexBufferKind, meshAttributeArray, byteOffset, binaryWriter, convertToRightHandedSystem) {
        var vertexBuffer = this.getVertexBufferFromMesh(vertexBufferKind, submesh.getMesh());
        if (vertexBuffer) {
            var stride = vertexBuffer.byteStride / babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].GetTypeByteLength(vertexBuffer.type);
            var vertexData = [];
            var index = 0;
            switch (vertexBufferKind) {
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind:
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index));
                        vertexBuffer.getSize() === 4 ? vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index)) : vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind:
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind: {
                    for (var x = submesh.verticesStart + submesh.verticesCount - 1; x >= submesh.verticesStart; --x) {
                        index = x * stride;
                        vertexData.push(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"].FromArray(meshAttributeArray, index));
                    }
                    break;
                }
                default: {
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("Unsupported Vertex Buffer type: " + vertexBufferKind);
                }
            }
            this.writeVertexAttributeData(vertexData, byteOffset, vertexBufferKind, meshAttributeArray, binaryWriter, convertToRightHandedSystem);
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("reorderTriangleFanMode: Vertex buffer kind " + vertexBufferKind + " not present!");
        }
    };
    /**
     * Writes the vertex attribute data to binary
     * @param vertices The vertices to write to the binary writer
     * @param byteOffset The offset into the binary writer to overwrite binary data
     * @param vertexAttributeKind The vertex attribute type
     * @param meshAttributeArray The vertex attribute data
     * @param binaryWriter The writer containing the binary data
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.writeVertexAttributeData = function (vertices, byteOffset, vertexAttributeKind, meshAttributeArray, binaryWriter, convertToRightHandedSystem) {
        for (var _i = 0, vertices_1 = vertices; _i < vertices_1.length; _i++) {
            var vertex = vertices_1[_i];
            if (convertToRightHandedSystem && !(vertexAttributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind) && !(vertex instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector2"])) {
                if (vertex instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"]) {
                    if (vertexAttributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedNormalVector3FromRef(vertex);
                    }
                    else if (vertexAttributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedPositionVector3FromRef(vertex);
                    }
                    else {
                        babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('Unsupported vertex attribute kind!');
                    }
                }
                else {
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedVector4FromRef(vertex);
                }
            }
            if (vertexAttributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind) {
                vertex.normalize();
            }
            else if (vertexAttributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind && vertex instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"]) {
                _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._NormalizeTangentFromRef(vertex);
            }
            for (var _a = 0, _b = vertex.asArray(); _a < _b.length; _a++) {
                var component = _b[_a];
                binaryWriter.setFloat32(component, byteOffset);
                byteOffset += 4;
            }
        }
    };
    /**
     * Writes mesh attribute data to a data buffer
     * Returns the bytelength of the data
     * @param vertexBufferKind Indicates what kind of vertex data is being passed in
     * @param meshAttributeArray Array containing the attribute data
     * @param byteStride Specifies the space between data
     * @param binaryWriter The buffer to write the binary data to
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.writeAttributeData = function (vertexBufferKind, attributeComponentKind, meshAttributeArray, stride, binaryWriter, convertToRightHandedSystem, babylonTransformNode) {
        var vertexAttributes = [];
        var index;
        switch (vertexBufferKind) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind: {
                for (var k = 0, length_2 = meshAttributeArray.length / stride; k < length_2; ++k) {
                    index = k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedPositionVector3FromRef(vertexData);
                    }
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                for (var k = 0, length_3 = meshAttributeArray.length / stride; k < length_3; ++k) {
                    index = k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedNormalVector3FromRef(vertexData);
                    }
                    vertexData.normalize();
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                for (var k = 0, length_4 = meshAttributeArray.length / stride; k < length_4; ++k) {
                    index = k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedVector4FromRef(vertexData);
                    }
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._NormalizeTangentFromRef(vertexData);
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind: {
                for (var k = 0, length_5 = meshAttributeArray.length / stride; k < length_5; ++k) {
                    index = k * stride;
                    var vertexData = stride === 3 ? babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index);
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind:
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind: {
                for (var k = 0, length_6 = meshAttributeArray.length / stride; k < length_6; ++k) {
                    index = k * stride;
                    vertexAttributes.push(convertToRightHandedSystem ? [meshAttributeArray[index], meshAttributeArray[index + 1]] : [meshAttributeArray[index], meshAttributeArray[index + 1]]);
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesKind:
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesExtraKind: {
                for (var k = 0, length_7 = meshAttributeArray.length / stride; k < length_7; ++k) {
                    index = k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index);
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsKind:
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsExtraKind: {
                for (var k = 0, length_8 = meshAttributeArray.length / stride; k < length_8; ++k) {
                    index = k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index);
                    vertexAttributes.push(vertexData.asArray());
                }
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Unsupported Vertex Buffer Type: " + vertexBufferKind);
                vertexAttributes = [];
            }
        }
        var writeBinaryFunc;
        switch (attributeComponentKind) {
            case 5121 /* UNSIGNED_BYTE */: {
                writeBinaryFunc = binaryWriter.setUInt8.bind(binaryWriter);
                break;
            }
            case 5123 /* UNSIGNED_SHORT */: {
                writeBinaryFunc = binaryWriter.setUInt16.bind(binaryWriter);
                break;
            }
            case 5125 /* UNSIGNED_INT */: {
                writeBinaryFunc = binaryWriter.setUInt32.bind(binaryWriter);
            }
            case 5126 /* FLOAT */: {
                writeBinaryFunc = binaryWriter.setFloat32.bind(binaryWriter);
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Unsupported Attribute Component kind: " + attributeComponentKind);
                return;
            }
        }
        for (var _i = 0, vertexAttributes_1 = vertexAttributes; _i < vertexAttributes_1.length; _i++) {
            var vertexAttribute = vertexAttributes_1[_i];
            for (var _a = 0, vertexAttribute_1 = vertexAttribute; _a < vertexAttribute_1.length; _a++) {
                var component = vertexAttribute_1[_a];
                writeBinaryFunc(component);
            }
        }
    };
    /**
     * Writes mesh attribute data to a data buffer
     * Returns the bytelength of the data
     * @param vertexBufferKind Indicates what kind of vertex data is being passed in
     * @param meshAttributeArray Array containing the attribute data
     * @param byteStride Specifies the space between data
     * @param binaryWriter The buffer to write the binary data to
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.writeMorphTargetAttributeData = function (vertexBufferKind, attributeComponentKind, meshPrimitive, morphTarget, meshAttributeArray, morphTargetAttributeArray, stride, binaryWriter, convertToRightHandedSystem, minMax) {
        var vertexAttributes = [];
        var index;
        var difference = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"]();
        var difference4 = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"](0, 0, 0, 0);
        switch (vertexBufferKind) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind: {
                for (var k = meshPrimitive.verticesStart; k < meshPrimitive.verticesCount; ++k) {
                    index = meshPrimitive.indexStart + k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index);
                    var morphData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(morphTargetAttributeArray, index);
                    difference = morphData.subtractToRef(vertexData, difference);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedPositionVector3FromRef(difference);
                    }
                    if (minMax) {
                        minMax.min.copyFromFloats(Math.min(difference.x, minMax.min.x), Math.min(difference.y, minMax.min.y), Math.min(difference.z, minMax.min.z));
                        minMax.max.copyFromFloats(Math.max(difference.x, minMax.max.x), Math.max(difference.y, minMax.max.y), Math.max(difference.z, minMax.max.z));
                    }
                    vertexAttributes.push(difference.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                for (var k = meshPrimitive.verticesStart; k < meshPrimitive.verticesCount; ++k) {
                    index = meshPrimitive.indexStart + k * stride;
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(meshAttributeArray, index);
                    vertexData.normalize();
                    var morphData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].FromArray(morphTargetAttributeArray, index);
                    morphData.normalize();
                    difference = morphData.subtractToRef(vertexData, difference);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedNormalVector3FromRef(difference);
                    }
                    vertexAttributes.push(difference.asArray());
                }
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                for (var k = meshPrimitive.verticesStart; k < meshPrimitive.verticesCount; ++k) {
                    index = meshPrimitive.indexStart + k * (stride + 1);
                    var vertexData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(meshAttributeArray, index);
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._NormalizeTangentFromRef(vertexData);
                    var morphData = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector4"].FromArray(morphTargetAttributeArray, index);
                    _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._NormalizeTangentFromRef(morphData);
                    difference4 = morphData.subtractToRef(vertexData, difference4);
                    if (convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedVector4FromRef(difference4);
                    }
                    vertexAttributes.push([difference4.x, difference4.y, difference4.z]);
                }
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Unsupported Vertex Buffer Type: " + vertexBufferKind);
                vertexAttributes = [];
            }
        }
        var writeBinaryFunc;
        switch (attributeComponentKind) {
            case 5121 /* UNSIGNED_BYTE */: {
                writeBinaryFunc = binaryWriter.setUInt8.bind(binaryWriter);
                break;
            }
            case 5123 /* UNSIGNED_SHORT */: {
                writeBinaryFunc = binaryWriter.setUInt16.bind(binaryWriter);
                break;
            }
            case 5125 /* UNSIGNED_INT */: {
                writeBinaryFunc = binaryWriter.setUInt32.bind(binaryWriter);
            }
            case 5126 /* FLOAT */: {
                writeBinaryFunc = binaryWriter.setFloat32.bind(binaryWriter);
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Unsupported Attribute Component kind: " + attributeComponentKind);
                return;
            }
        }
        for (var _i = 0, vertexAttributes_2 = vertexAttributes; _i < vertexAttributes_2.length; _i++) {
            var vertexAttribute = vertexAttributes_2[_i];
            for (var _a = 0, vertexAttribute_2 = vertexAttribute; _a < vertexAttribute_2.length; _a++) {
                var component = vertexAttribute_2[_a];
                writeBinaryFunc(component);
            }
        }
    };
    /**
     * Generates glTF json data
     * @param shouldUseGlb Indicates whether the json should be written for a glb file
     * @param glTFPrefix Text to use when prefixing a glTF file
     * @param prettyPrint Indicates whether the json file should be pretty printed (true) or not (false)
     * @returns json data as string
     */
    _Exporter.prototype.generateJSON = function (shouldUseGlb, glTFPrefix, prettyPrint) {
        var _this = this;
        var buffer = { byteLength: this._totalByteLength };
        var imageName;
        var imageData;
        var bufferView;
        var byteOffset = this._totalByteLength;
        if (buffer.byteLength) {
            this._glTF.buffers = [buffer];
        }
        if (this._nodes && this._nodes.length) {
            this._glTF.nodes = this._nodes;
        }
        if (this._meshes && this._meshes.length) {
            this._glTF.meshes = this._meshes;
        }
        if (this._scenes && this._scenes.length) {
            this._glTF.scenes = this._scenes;
            this._glTF.scene = 0;
        }
        if (this._bufferViews && this._bufferViews.length) {
            this._glTF.bufferViews = this._bufferViews;
        }
        if (this._accessors && this._accessors.length) {
            this._glTF.accessors = this._accessors;
        }
        if (this._animations && this._animations.length) {
            this._glTF.animations = this._animations;
        }
        if (this._materials && this._materials.length) {
            this._glTF.materials = this._materials;
        }
        if (this._textures && this._textures.length) {
            this._glTF.textures = this._textures;
        }
        if (this._samplers && this._samplers.length) {
            this._glTF.samplers = this._samplers;
        }
        if (this._skins && this._skins.length) {
            this._glTF.skins = this._skins;
        }
        if (this._images && this._images.length) {
            if (!shouldUseGlb) {
                this._glTF.images = this._images;
            }
            else {
                this._glTF.images = [];
                this._images.forEach(function (image) {
                    if (image.uri) {
                        imageData = _this._imageData[image.uri];
                        _this._orderedImageData.push(imageData);
                        imageName = image.uri.split('.')[0] + " image";
                        bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, byteOffset, imageData.data.length, undefined, imageName);
                        byteOffset += imageData.data.buffer.byteLength;
                        _this._bufferViews.push(bufferView);
                        image.bufferView = _this._bufferViews.length - 1;
                        image.name = imageName;
                        image.mimeType = imageData.mimeType;
                        image.uri = undefined;
                        if (!_this._glTF.images) {
                            _this._glTF.images = [];
                        }
                        _this._glTF.images.push(image);
                    }
                });
                // Replace uri with bufferview and mime type for glb
                buffer.byteLength = byteOffset;
            }
        }
        if (!shouldUseGlb) {
            buffer.uri = glTFPrefix + ".bin";
        }
        var jsonText = prettyPrint ? JSON.stringify(this._glTF, null, 2) : JSON.stringify(this._glTF);
        return jsonText;
    };
    /**
     * Generates data for .gltf and .bin files based on the glTF prefix string
     * @param glTFPrefix Text to use when prefixing a glTF file
     * @param dispose Dispose the exporter
     * @returns GLTFData with glTF file data
     */
    _Exporter.prototype._generateGLTFAsync = function (glTFPrefix, dispose) {
        var _this = this;
        if (dispose === void 0) { dispose = true; }
        return this._generateBinaryAsync().then(function (binaryBuffer) {
            _this._extensionsOnExporting();
            var jsonText = _this.generateJSON(false, glTFPrefix, true);
            var bin = new Blob([binaryBuffer], { type: 'application/octet-stream' });
            var glTFFileName = glTFPrefix + '.gltf';
            var glTFBinFile = glTFPrefix + '.bin';
            var container = new _glTFData__WEBPACK_IMPORTED_MODULE_4__["GLTFData"]();
            container.glTFFiles[glTFFileName] = jsonText;
            container.glTFFiles[glTFBinFile] = bin;
            if (_this._imageData) {
                for (var image in _this._imageData) {
                    container.glTFFiles[image] = new Blob([_this._imageData[image].data], { type: _this._imageData[image].mimeType });
                }
            }
            if (dispose) {
                _this.dispose();
            }
            return container;
        });
    };
    /**
     * Creates a binary buffer for glTF
     * @returns array buffer for binary data
     */
    _Exporter.prototype._generateBinaryAsync = function () {
        var _this = this;
        var binaryWriter = new _BinaryWriter(4);
        return this.createSceneAsync(this._babylonScene, binaryWriter).then(function () {
            if (_this._localEngine) {
                _this._localEngine.dispose();
            }
            return binaryWriter.getArrayBuffer();
        });
    };
    /**
     * Pads the number to a multiple of 4
     * @param num number to pad
     * @returns padded number
     */
    _Exporter.prototype._getPadding = function (num) {
        var remainder = num % 4;
        var padding = remainder === 0 ? remainder : 4 - remainder;
        return padding;
    };
    /**
     * @hidden
     */
    _Exporter.prototype._generateGLBAsync = function (glTFPrefix, dispose) {
        var _this = this;
        if (dispose === void 0) { dispose = true; }
        return this._generateBinaryAsync().then(function (binaryBuffer) {
            _this._extensionsOnExporting();
            var jsonText = _this.generateJSON(true);
            var glbFileName = glTFPrefix + '.glb';
            var headerLength = 12;
            var chunkLengthPrefix = 8;
            var jsonLength = jsonText.length;
            var imageByteLength = 0;
            for (var i = 0; i < _this._orderedImageData.length; ++i) {
                imageByteLength += _this._orderedImageData[i].data.byteLength;
            }
            var jsonPadding = _this._getPadding(jsonLength);
            var binPadding = _this._getPadding(binaryBuffer.byteLength);
            var imagePadding = _this._getPadding(imageByteLength);
            var byteLength = headerLength + (2 * chunkLengthPrefix) + jsonLength + jsonPadding + binaryBuffer.byteLength + binPadding + imageByteLength + imagePadding;
            //header
            var headerBuffer = new ArrayBuffer(headerLength);
            var headerBufferView = new DataView(headerBuffer);
            headerBufferView.setUint32(0, 0x46546C67, true); //glTF
            headerBufferView.setUint32(4, 2, true); // version
            headerBufferView.setUint32(8, byteLength, true); // total bytes in file
            //json chunk
            var jsonChunkBuffer = new ArrayBuffer(chunkLengthPrefix + jsonLength + jsonPadding);
            var jsonChunkBufferView = new DataView(jsonChunkBuffer);
            jsonChunkBufferView.setUint32(0, jsonLength + jsonPadding, true);
            jsonChunkBufferView.setUint32(4, 0x4E4F534A, true);
            //json chunk bytes
            var jsonData = new Uint8Array(jsonChunkBuffer, chunkLengthPrefix);
            for (var i = 0; i < jsonLength; ++i) {
                jsonData[i] = jsonText.charCodeAt(i);
            }
            //json padding
            var jsonPaddingView = new Uint8Array(jsonChunkBuffer, chunkLengthPrefix + jsonLength);
            for (var i = 0; i < jsonPadding; ++i) {
                jsonPaddingView[i] = 0x20;
            }
            //binary chunk
            var binaryChunkBuffer = new ArrayBuffer(chunkLengthPrefix);
            var binaryChunkBufferView = new DataView(binaryChunkBuffer);
            binaryChunkBufferView.setUint32(0, binaryBuffer.byteLength + imageByteLength + imagePadding, true);
            binaryChunkBufferView.setUint32(4, 0x004E4942, true);
            // binary padding
            var binPaddingBuffer = new ArrayBuffer(binPadding);
            var binPaddingView = new Uint8Array(binPaddingBuffer);
            for (var i = 0; i < binPadding; ++i) {
                binPaddingView[i] = 0;
            }
            var imagePaddingBuffer = new ArrayBuffer(imagePadding);
            var imagePaddingView = new Uint8Array(imagePaddingBuffer);
            for (var i = 0; i < imagePadding; ++i) {
                imagePaddingView[i] = 0;
            }
            var glbData = [headerBuffer, jsonChunkBuffer, binaryChunkBuffer, binaryBuffer];
            // binary data
            for (var i = 0; i < _this._orderedImageData.length; ++i) {
                glbData.push(_this._orderedImageData[i].data.buffer);
            }
            glbData.push(binPaddingBuffer);
            glbData.push(imagePaddingBuffer);
            var glbFile = new Blob(glbData, { type: 'application/octet-stream' });
            var container = new _glTFData__WEBPACK_IMPORTED_MODULE_4__["GLTFData"]();
            container.glTFFiles[glbFileName] = glbFile;
            if (_this._localEngine != null) {
                _this._localEngine.dispose();
            }
            if (dispose) {
                _this.dispose();
            }
            return container;
        });
    };
    /**
     * Sets the TRS for each node
     * @param node glTF Node for storing the transformation data
     * @param babylonTransformNode Babylon mesh used as the source for the transformation data
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.setNodeTransformation = function (node, babylonTransformNode, convertToRightHandedSystem) {
        if (!babylonTransformNode.getPivotPoint().equalsToFloats(0, 0, 0)) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Pivot points are not supported in the glTF serializer");
        }
        if (!babylonTransformNode.position.equalsToFloats(0, 0, 0)) {
            node.translation = convertToRightHandedSystem ? _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedPositionVector3(babylonTransformNode.position).asArray() : babylonTransformNode.position.asArray();
        }
        if (!babylonTransformNode.scaling.equalsToFloats(1, 1, 1)) {
            node.scale = babylonTransformNode.scaling.asArray();
        }
        var rotationQuaternion = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Quaternion"].RotationYawPitchRoll(babylonTransformNode.rotation.y, babylonTransformNode.rotation.x, babylonTransformNode.rotation.z);
        if (babylonTransformNode.rotationQuaternion) {
            rotationQuaternion.multiplyInPlace(babylonTransformNode.rotationQuaternion);
        }
        if (!(rotationQuaternion.x === 0 && rotationQuaternion.y === 0 && rotationQuaternion.z === 0 && rotationQuaternion.w === 1)) {
            if (convertToRightHandedSystem) {
                _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedQuaternionFromRef(rotationQuaternion);
            }
            node.rotation = rotationQuaternion.normalize().asArray();
        }
    };
    _Exporter.prototype.getVertexBufferFromMesh = function (attributeKind, bufferMesh) {
        if (bufferMesh.isVerticesDataPresent(attributeKind)) {
            var vertexBuffer = bufferMesh.getVertexBuffer(attributeKind);
            if (vertexBuffer) {
                return vertexBuffer;
            }
        }
        return null;
    };
    /**
     * Creates a bufferview based on the vertices type for the Babylon mesh
     * @param kind Indicates the type of vertices data
     * @param componentType Indicates the numerical type used to store the data
     * @param babylonTransformNode The Babylon mesh to get the vertices data from
     * @param binaryWriter The buffer to write the bufferview data to
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.createBufferViewKind = function (kind, attributeComponentKind, babylonTransformNode, binaryWriter, byteStride, convertToRightHandedSystem) {
        var bufferMesh = babylonTransformNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Mesh"] ?
            babylonTransformNode : babylonTransformNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["InstancedMesh"] ?
            babylonTransformNode.sourceMesh : null;
        if (bufferMesh) {
            var vertexBuffer = bufferMesh.getVertexBuffer(kind);
            var vertexData = bufferMesh.getVerticesData(kind);
            if (vertexBuffer && vertexData) {
                var typeByteLength = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].GetTypeByteLength(attributeComponentKind);
                var byteLength = vertexData.length * typeByteLength;
                var bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, byteStride, kind + " - " + bufferMesh.name);
                this._bufferViews.push(bufferView);
                this.writeAttributeData(kind, attributeComponentKind, vertexData, byteStride / typeByteLength, binaryWriter, convertToRightHandedSystem, babylonTransformNode);
            }
        }
    };
    /**
 * Creates a bufferview based on the vertices type for the Babylon mesh
 * @param babylonSubMesh The Babylon submesh that the morph target is applied to
 * @param babylonMorphTarget the morph target to be exported
 * @param binaryWriter The buffer to write the bufferview data to
 * @param convertToRightHandedSystem Converts the values to right-handed
 */
    _Exporter.prototype.setMorphTargetAttributes = function (babylonSubMesh, meshPrimitive, babylonMorphTarget, binaryWriter, convertToRightHandedSystem) {
        if (babylonMorphTarget) {
            if (!meshPrimitive.targets) {
                meshPrimitive.targets = [];
            }
            var target = {};
            if (babylonMorphTarget.hasNormals) {
                var vertexNormals = babylonSubMesh.getMesh().getVerticesData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind);
                var morphNormals = babylonMorphTarget.getNormals();
                var count = babylonSubMesh.verticesCount;
                var byteStride = 12; // 3 x 4 byte floats
                var byteLength = count * byteStride;
                var bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, byteStride, babylonMorphTarget.name + "_NORMAL");
                this._bufferViews.push(bufferView);
                var bufferViewIndex = this._bufferViews.length - 1;
                var accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(bufferViewIndex, babylonMorphTarget.name + " - " + "NORMAL", "VEC3" /* VEC3 */, 5126 /* FLOAT */, count, 0, null, null);
                this._accessors.push(accessor);
                target.NORMAL = this._accessors.length - 1;
                this.writeMorphTargetAttributeData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind, 5126 /* FLOAT */, babylonSubMesh, babylonMorphTarget, vertexNormals, morphNormals, byteStride / 4, binaryWriter, convertToRightHandedSystem);
            }
            if (babylonMorphTarget.hasPositions) {
                var vertexPositions = babylonSubMesh.getMesh().getVerticesData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind);
                var morphPositions = babylonMorphTarget.getPositions();
                var count = babylonSubMesh.verticesCount;
                var byteStride = 12; // 3 x 4 byte floats
                var byteLength = count * byteStride;
                var bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, byteStride, babylonMorphTarget.name + "_POSITION");
                this._bufferViews.push(bufferView);
                var bufferViewIndex = this._bufferViews.length - 1;
                var minMax = { min: new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"](Infinity, Infinity, Infinity), max: new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"](-Infinity, -Infinity, -Infinity) };
                var accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(bufferViewIndex, babylonMorphTarget.name + " - " + "POSITION", "VEC3" /* VEC3 */, 5126 /* FLOAT */, count, 0, null, null);
                this._accessors.push(accessor);
                target.POSITION = this._accessors.length - 1;
                this.writeMorphTargetAttributeData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind, 5126 /* FLOAT */, babylonSubMesh, babylonMorphTarget, vertexPositions, morphPositions, byteStride / 4, binaryWriter, convertToRightHandedSystem, minMax);
                accessor.min = minMax.min.asArray();
                accessor.max = minMax.max.asArray();
            }
            if (babylonMorphTarget.hasTangents) {
                var vertexTangents = babylonSubMesh.getMesh().getVerticesData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind);
                var morphTangents = babylonMorphTarget.getTangents();
                var count = babylonSubMesh.verticesCount;
                var byteStride = 12; // 3 x 4 byte floats
                var byteLength = count * byteStride;
                var bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, byteStride, babylonMorphTarget.name + "_NORMAL");
                this._bufferViews.push(bufferView);
                var bufferViewIndex = this._bufferViews.length - 1;
                var accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(bufferViewIndex, babylonMorphTarget.name + " - " + "TANGENT", "VEC3" /* VEC3 */, 5126 /* FLOAT */, count, 0, null, null);
                this._accessors.push(accessor);
                target.TANGENT = this._accessors.length - 1;
                this.writeMorphTargetAttributeData(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind, 5126 /* FLOAT */, babylonSubMesh, babylonMorphTarget, vertexTangents, morphTangents, byteStride / 4, binaryWriter, convertToRightHandedSystem);
            }
            meshPrimitive.targets.push(target);
        }
    };
    /**
     * The primitive mode of the Babylon mesh
     * @param babylonMesh The BabylonJS mesh
     */
    _Exporter.prototype.getMeshPrimitiveMode = function (babylonMesh) {
        if (babylonMesh instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["LinesMesh"]) {
            return babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].LineListDrawMode;
        }
        return babylonMesh.material ? babylonMesh.material.fillMode : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFillMode;
    };
    /**
     * Sets the primitive mode of the glTF mesh primitive
     * @param meshPrimitive glTF mesh primitive
     * @param primitiveMode The primitive mode
     */
    _Exporter.prototype.setPrimitiveMode = function (meshPrimitive, primitiveMode) {
        switch (primitiveMode) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFillMode: {
                // glTF defaults to using Triangle Mode
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleStripDrawMode: {
                meshPrimitive.mode = 5 /* TRIANGLE_STRIP */;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].TriangleFanDrawMode: {
                meshPrimitive.mode = 6 /* TRIANGLE_FAN */;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].PointListDrawMode: {
                meshPrimitive.mode = 0 /* POINTS */;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].PointFillMode: {
                meshPrimitive.mode = 0 /* POINTS */;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].LineLoopDrawMode: {
                meshPrimitive.mode = 2 /* LINE_LOOP */;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].LineListDrawMode: {
                meshPrimitive.mode = 1 /* LINES */;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].LineStripDrawMode: {
                meshPrimitive.mode = 3 /* LINE_STRIP */;
                break;
            }
        }
    };
    /**
     * Sets the vertex attribute accessor based of the glTF mesh primitive
     * @param meshPrimitive glTF mesh primitive
     * @param attributeKind vertex attribute
     * @returns boolean specifying if uv coordinates are present
     */
    _Exporter.prototype.setAttributeKind = function (meshPrimitive, attributeKind) {
        switch (attributeKind) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind: {
                meshPrimitive.attributes.POSITION = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind: {
                meshPrimitive.attributes.NORMAL = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind: {
                meshPrimitive.attributes.COLOR_0 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind: {
                meshPrimitive.attributes.TANGENT = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind: {
                meshPrimitive.attributes.TEXCOORD_0 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind: {
                meshPrimitive.attributes.TEXCOORD_1 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesKind: {
                meshPrimitive.attributes.JOINTS_0 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesExtraKind: {
                meshPrimitive.attributes.JOINTS_1 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsKind: {
                meshPrimitive.attributes.WEIGHTS_0 = this._accessors.length - 1;
                break;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsExtraKind: {
                meshPrimitive.attributes.WEIGHTS_1 = this._accessors.length - 1;
                break;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Unsupported Vertex Buffer Type: " + attributeKind);
            }
        }
    };
    /**
     * Sets data for the primitive attributes of each submesh
     * @param mesh glTF Mesh object to store the primitive attribute information
     * @param babylonTransformNode Babylon mesh to get the primitive attribute data from
     * @param binaryWriter Buffer to write the attribute data to
     * @param convertToRightHandedSystem Converts the values to right-handed
     */
    _Exporter.prototype.setPrimitiveAttributesAsync = function (mesh, babylonTransformNode, binaryWriter, convertToRightHandedSystem) {
        var _a;
        var promises = [];
        var bufferMesh = null;
        var bufferView;
        var minMax;
        if (babylonTransformNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Mesh"]) {
            bufferMesh = babylonTransformNode;
        }
        else if (babylonTransformNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["InstancedMesh"]) {
            bufferMesh = babylonTransformNode.sourceMesh;
        }
        var attributeData = [
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind, accessorType: "VEC3" /* VEC3 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 12 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].NormalKind, accessorType: "VEC3" /* VEC3 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 12 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].ColorKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 16 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].TangentKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 16 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind, accessorType: "VEC2" /* VEC2 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 8 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind, accessorType: "VEC2" /* VEC2 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 8 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5123 /* UNSIGNED_SHORT */, byteStride: 8 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesIndicesExtraKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5123 /* UNSIGNED_SHORT */, byteStride: 8 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 16 },
            { kind: babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].MatricesWeightsExtraKind, accessorType: "VEC4" /* VEC4 */, accessorComponentType: 5126 /* FLOAT */, byteStride: 16 },
        ];
        if (bufferMesh) {
            var indexBufferViewIndex = null;
            var primitiveMode = this.getMeshPrimitiveMode(bufferMesh);
            var vertexAttributeBufferViews = {};
            var morphTargetManager = bufferMesh.morphTargetManager;
            // For each BabylonMesh, create bufferviews for each 'kind'
            for (var _i = 0, attributeData_1 = attributeData; _i < attributeData_1.length; _i++) {
                var attribute = attributeData_1[_i];
                var attributeKind = attribute.kind;
                var attributeComponentKind = attribute.accessorComponentType;
                if (bufferMesh.isVerticesDataPresent(attributeKind)) {
                    var vertexBuffer = this.getVertexBufferFromMesh(attributeKind, bufferMesh);
                    attribute.byteStride = vertexBuffer ? vertexBuffer.getSize() * babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].GetTypeByteLength(attribute.accessorComponentType) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].DeduceStride(attributeKind) * 4;
                    if (attribute.byteStride === 12) {
                        attribute.accessorType = "VEC3" /* VEC3 */;
                    }
                    this.createBufferViewKind(attributeKind, attributeComponentKind, babylonTransformNode, binaryWriter, attribute.byteStride, convertToRightHandedSystem);
                    attribute.bufferViewIndex = this._bufferViews.length - 1;
                    vertexAttributeBufferViews[attributeKind] = attribute.bufferViewIndex;
                }
            }
            if (bufferMesh.getTotalIndices()) {
                var indices = bufferMesh.getIndices();
                if (indices) {
                    var byteLength = indices.length * 4;
                    bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, binaryWriter.getByteOffset(), byteLength, undefined, "Indices - " + bufferMesh.name);
                    this._bufferViews.push(bufferView);
                    indexBufferViewIndex = this._bufferViews.length - 1;
                    for (var k = 0, length_9 = indices.length; k < length_9; ++k) {
                        binaryWriter.setUInt32(indices[k]);
                    }
                }
            }
            if (bufferMesh.subMeshes) {
                // go through all mesh primitives (submeshes)
                for (var _b = 0, _c = bufferMesh.subMeshes; _b < _c.length; _b++) {
                    var submesh = _c[_b];
                    var babylonMaterial = submesh.getMaterial() || bufferMesh.getScene().defaultMaterial;
                    var materialIndex = null;
                    if (babylonMaterial) {
                        if (bufferMesh instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["LinesMesh"]) {
                            // get the color from the lines mesh and set it in the material
                            var material = {
                                name: bufferMesh.name + ' material'
                            };
                            if (!bufferMesh.color.equals(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Color3"].White()) || bufferMesh.alpha < 1) {
                                material.pbrMetallicRoughness = {
                                    baseColorFactor: bufferMesh.color.asArray().concat([bufferMesh.alpha])
                                };
                            }
                            this._materials.push(material);
                            materialIndex = this._materials.length - 1;
                        }
                        else if (babylonMaterial instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["MultiMaterial"]) {
                            var subMaterial = babylonMaterial.subMaterials[submesh.materialIndex];
                            if (subMaterial) {
                                babylonMaterial = subMaterial;
                                materialIndex = this._materialMap[babylonMaterial.uniqueId];
                            }
                        }
                        else {
                            materialIndex = this._materialMap[babylonMaterial.uniqueId];
                        }
                    }
                    var glTFMaterial = materialIndex != null ? this._materials[materialIndex] : null;
                    var meshPrimitive = { attributes: {} };
                    this.setPrimitiveMode(meshPrimitive, primitiveMode);
                    for (var _d = 0, attributeData_2 = attributeData; _d < attributeData_2.length; _d++) {
                        var attribute = attributeData_2[_d];
                        var attributeKind = attribute.kind;
                        if (attributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UVKind || attributeKind === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].UV2Kind) {
                            if (glTFMaterial && !this._glTFMaterialExporter._hasTexturesPresent(glTFMaterial)) {
                                continue;
                            }
                        }
                        var vertexData = bufferMesh.getVerticesData(attributeKind);
                        if (vertexData) {
                            var vertexBuffer = this.getVertexBufferFromMesh(attributeKind, bufferMesh);
                            if (vertexBuffer) {
                                var stride = vertexBuffer.getSize();
                                var bufferViewIndex = attribute.bufferViewIndex;
                                if (bufferViewIndex != undefined) { // check to see if bufferviewindex has a numeric value assigned.
                                    minMax = { min: null, max: null };
                                    if (attributeKind == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["VertexBuffer"].PositionKind) {
                                        minMax = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CalculateMinMaxPositions(vertexData, 0, vertexData.length / stride, convertToRightHandedSystem);
                                    }
                                    var accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(bufferViewIndex, attributeKind + " - " + babylonTransformNode.name, attribute.accessorType, attribute.accessorComponentType, vertexData.length / stride, 0, minMax.min, minMax.max);
                                    this._accessors.push(accessor);
                                    this.setAttributeKind(meshPrimitive, attributeKind);
                                }
                            }
                        }
                    }
                    if (indexBufferViewIndex) {
                        // Create accessor
                        var accessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(indexBufferViewIndex, "indices - " + babylonTransformNode.name, "SCALAR" /* SCALAR */, 5125 /* UNSIGNED_INT */, submesh.indexCount, submesh.indexStart * 4, null, null);
                        this._accessors.push(accessor);
                        meshPrimitive.indices = this._accessors.length - 1;
                    }
                    if (materialIndex != null && Object.keys(meshPrimitive.attributes).length > 0) {
                        var sideOrientation = bufferMesh.overrideMaterialSideOrientation !== null ? bufferMesh.overrideMaterialSideOrientation : babylonMaterial.sideOrientation;
                        if ((sideOrientation == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].ClockWiseSideOrientation && this._babylonScene.useRightHandedSystem)
                            || (sideOrientation == babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Material"].ClockWiseSideOrientation && convertToRightHandedSystem && bufferMesh.overrideMaterialSideOrientation !== ((_a = bufferMesh.material) === null || _a === void 0 ? void 0 : _a.sideOrientation))) {
                            var byteOffset = indexBufferViewIndex != null ? this._bufferViews[indexBufferViewIndex].byteOffset : null;
                            if (byteOffset == null) {
                                byteOffset = 0;
                            }
                            var babylonIndices = null;
                            if (indexBufferViewIndex != null) {
                                babylonIndices = bufferMesh.getIndices();
                            }
                            if (babylonIndices) {
                                this.reorderIndicesBasedOnPrimitiveMode(submesh, primitiveMode, babylonIndices, byteOffset, binaryWriter);
                            }
                            else {
                                for (var _e = 0, attributeData_3 = attributeData; _e < attributeData_3.length; _e++) {
                                    var attribute = attributeData_3[_e];
                                    var vertexData = bufferMesh.getVerticesData(attribute.kind);
                                    if (vertexData) {
                                        var byteOffset_1 = this._bufferViews[vertexAttributeBufferViews[attribute.kind]].byteOffset;
                                        if (!byteOffset_1) {
                                            byteOffset_1 = 0;
                                        }
                                        this.reorderVertexAttributeDataBasedOnPrimitiveMode(submesh, primitiveMode, sideOrientation, attribute.kind, vertexData, byteOffset_1, binaryWriter, convertToRightHandedSystem);
                                    }
                                }
                            }
                        }
                        meshPrimitive.material = materialIndex;
                    }
                    if (morphTargetManager) {
                        var target = void 0;
                        for (var i = 0; i < morphTargetManager.numTargets; ++i) {
                            target = morphTargetManager.getTarget(i);
                            this.setMorphTargetAttributes(submesh, meshPrimitive, target, binaryWriter, convertToRightHandedSystem);
                        }
                    }
                    mesh.primitives.push(meshPrimitive);
                    var promise = this._extensionsPostExportMeshPrimitiveAsync("postExport", meshPrimitive, submesh, binaryWriter);
                    if (promise) {
                        promises.push();
                    }
                }
            }
        }
        return Promise.all(promises).then(function () {
            /* do nothing */
        });
    };
    /**
     * Check if the node is used to convert its descendants from a right handed coordinate system to the Babylon scene's coordinate system.
     * @param node The node to check
     * @returns True if the node is used to convert its descendants from right-handed to left-handed. False otherwise
     */
    _Exporter.prototype.isBabylonCoordinateSystemConvertingNode = function (node) {
        if (node instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["TransformNode"]) {
            if (node.name !== "__root__") {
                return false;
            }
            // Transform
            var matrix = node.getWorldMatrix();
            var matrixToLeftHanded = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Matrix"].Compose(this._convertToRightHandedSystem ? new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"](-1, 1, 1) : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].One(), babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Quaternion"].Identity(), babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Vector3"].Zero());
            var matrixProduct = matrix.multiply(matrixToLeftHanded);
            var matrixIdentity = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Matrix"].IdentityReadOnly;
            for (var i = 0; i < 16; i++) {
                if (Math.abs(matrixProduct.m[i] - matrixIdentity.m[i]) > babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Epsilon"]) {
                    return false;
                }
            }
            // Geometry
            if ((node instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Mesh"] && node.geometry !== null) ||
                (node instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["InstancedMesh"] && node.sourceMesh.geometry !== null)) {
                return false;
            }
            if (this._includeCoordinateSystemConversionNodes) {
                return false;
            }
            return true;
        }
        return false;
    };
    /**
     * Creates a glTF scene based on the array of meshes
     * Returns the the total byte offset
     * @param babylonScene Babylon scene to get the mesh data from
     * @param binaryWriter Buffer to write binary data to
     */
    _Exporter.prototype.createSceneAsync = function (babylonScene, binaryWriter) {
        var _this = this;
        var scene = { nodes: [] };
        var glTFNodeIndex;
        var glTFNode;
        var directDescendents;
        var nodes = Object(tslib__WEBPACK_IMPORTED_MODULE_0__["__spreadArrays"])(babylonScene.transformNodes, babylonScene.meshes, babylonScene.lights);
        var rootNodesToLeftHanded = [];
        this._convertToRightHandedSystem = !babylonScene.useRightHandedSystem;
        this._convertToRightHandedSystemMap = {};
        // Set default values for all nodes
        babylonScene.rootNodes.forEach(function (rootNode) {
            _this._convertToRightHandedSystemMap[rootNode.uniqueId] = _this._convertToRightHandedSystem;
            rootNode.getDescendants(false).forEach(function (descendant) {
                _this._convertToRightHandedSystemMap[descendant.uniqueId] = _this._convertToRightHandedSystem;
            });
        });
        // Check if root nodes converting to left-handed are present
        babylonScene.rootNodes.forEach(function (rootNode) {
            if (_this.isBabylonCoordinateSystemConvertingNode(rootNode)) {
                rootNodesToLeftHanded.push(rootNode);
                // Exclude the node from list of nodes to export
                var indexRootNode = nodes.indexOf(rootNode);
                if (indexRootNode !== -1) { // should always be true
                    nodes.splice(indexRootNode, 1);
                }
                // Cancel conversion to right handed system
                rootNode.getDescendants(false).forEach(function (descendant) {
                    _this._convertToRightHandedSystemMap[descendant.uniqueId] = false;
                });
            }
        });
        return this._glTFMaterialExporter._convertMaterialsToGLTFAsync(babylonScene.materials, "image/png" /* PNG */, true).then(function () {
            return _this.createNodeMapAndAnimationsAsync(babylonScene, nodes, binaryWriter).then(function (nodeMap) {
                return _this.createSkinsAsync(babylonScene, nodeMap, binaryWriter).then(function (skinMap) {
                    _this._nodeMap = nodeMap;
                    _this._totalByteLength = binaryWriter.getByteOffset();
                    if (_this._totalByteLength == undefined) {
                        throw new Error("undefined byte length!");
                    }
                    // Build Hierarchy with the node map.
                    for (var _i = 0, nodes_1 = nodes; _i < nodes_1.length; _i++) {
                        var babylonNode = nodes_1[_i];
                        glTFNodeIndex = _this._nodeMap[babylonNode.uniqueId];
                        if (glTFNodeIndex !== undefined) {
                            glTFNode = _this._nodes[glTFNodeIndex];
                            if (babylonNode.metadata) {
                                if (_this._options.metadataSelector) {
                                    glTFNode.extras = _this._options.metadataSelector(babylonNode.metadata);
                                }
                                else if (babylonNode.metadata.gltf) {
                                    glTFNode.extras = babylonNode.metadata.gltf.extras;
                                }
                            }
                            if (!babylonNode.parent || rootNodesToLeftHanded.indexOf(babylonNode.parent) !== -1) {
                                if (_this._options.shouldExportNode && !_this._options.shouldExportNode(babylonNode)) {
                                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Log("Omitting " + babylonNode.name + " from scene.");
                                }
                                else {
                                    var convertToRightHandedSystem = _this._convertToRightHandedSystemMap[babylonNode.uniqueId];
                                    if (convertToRightHandedSystem) {
                                        if (glTFNode.translation) {
                                            glTFNode.translation[2] *= -1;
                                            glTFNode.translation[0] *= -1;
                                        }
                                        glTFNode.rotation = glTFNode.rotation ? babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Quaternion"].FromArray([0, 1, 0, 0]).multiply(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Quaternion"].FromArray(glTFNode.rotation)).asArray() : (babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Quaternion"].FromArray([0, 1, 0, 0])).asArray();
                                    }
                                    scene.nodes.push(glTFNodeIndex);
                                }
                            }
                            if (babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Mesh"]) {
                                var babylonMesh = babylonNode;
                                if (babylonMesh.skeleton) {
                                    glTFNode.skin = skinMap[babylonMesh.skeleton.uniqueId];
                                }
                            }
                            directDescendents = babylonNode.getDescendants(true);
                            if (!glTFNode.children && directDescendents && directDescendents.length) {
                                var children = [];
                                for (var _a = 0, directDescendents_1 = directDescendents; _a < directDescendents_1.length; _a++) {
                                    var descendent = directDescendents_1[_a];
                                    if (_this._nodeMap[descendent.uniqueId] != null) {
                                        children.push(_this._nodeMap[descendent.uniqueId]);
                                    }
                                }
                                if (children.length) {
                                    glTFNode.children = children;
                                }
                            }
                        }
                    }
                    if (scene.nodes.length) {
                        _this._scenes.push(scene);
                    }
                });
            });
        });
    };
    /**
     * Creates a mapping of Node unique id to node index and handles animations
     * @param babylonScene Babylon Scene
     * @param nodes Babylon transform nodes
     * @param binaryWriter Buffer to write binary data to
     * @returns Node mapping of unique id to index
     */
    _Exporter.prototype.createNodeMapAndAnimationsAsync = function (babylonScene, nodes, binaryWriter) {
        var _this = this;
        var promiseChain = Promise.resolve();
        var nodeMap = {};
        var nodeIndex;
        var runtimeGLTFAnimation = {
            name: 'runtime animations',
            channels: [],
            samplers: []
        };
        var idleGLTFAnimations = [];
        var _loop_1 = function (babylonNode) {
            if (!this_1._options.shouldExportNode || this_1._options.shouldExportNode(babylonNode)) {
                promiseChain = promiseChain.then(function () {
                    var convertToRightHandedSystem = _this._convertToRightHandedSystemMap[babylonNode.uniqueId];
                    return _this.createNodeAsync(babylonNode, binaryWriter, convertToRightHandedSystem, nodeMap).then(function (node) {
                        var promise = _this._extensionsPostExportNodeAsync("createNodeAsync", node, babylonNode, nodeMap);
                        if (promise == null) {
                            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Warn("Not exporting node " + babylonNode.name);
                            return Promise.resolve();
                        }
                        else {
                            return promise.then(function (node) {
                                if (!node) {
                                    return;
                                }
                                _this._nodes.push(node);
                                nodeIndex = _this._nodes.length - 1;
                                nodeMap[babylonNode.uniqueId] = nodeIndex;
                                if (!babylonScene.animationGroups.length) {
                                    _glTFAnimation__WEBPACK_IMPORTED_MODULE_5__["_GLTFAnimation"]._CreateMorphTargetAnimationFromMorphTargetAnimations(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, _this._nodes, binaryWriter, _this._bufferViews, _this._accessors, convertToRightHandedSystem, _this._animationSampleRate);
                                    if (babylonNode.animations.length) {
                                        _glTFAnimation__WEBPACK_IMPORTED_MODULE_5__["_GLTFAnimation"]._CreateNodeAnimationFromNodeAnimations(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, _this._nodes, binaryWriter, _this._bufferViews, _this._accessors, convertToRightHandedSystem, _this._animationSampleRate);
                                    }
                                }
                            });
                        }
                    });
                });
            }
            else {
                "Excluding node " + babylonNode.name;
            }
        };
        var this_1 = this;
        for (var _i = 0, nodes_2 = nodes; _i < nodes_2.length; _i++) {
            var babylonNode = nodes_2[_i];
            _loop_1(babylonNode);
        }
        return promiseChain.then(function () {
            if (runtimeGLTFAnimation.channels.length && runtimeGLTFAnimation.samplers.length) {
                _this._animations.push(runtimeGLTFAnimation);
            }
            idleGLTFAnimations.forEach(function (idleGLTFAnimation) {
                if (idleGLTFAnimation.channels.length && idleGLTFAnimation.samplers.length) {
                    _this._animations.push(idleGLTFAnimation);
                }
            });
            if (babylonScene.animationGroups.length) {
                _glTFAnimation__WEBPACK_IMPORTED_MODULE_5__["_GLTFAnimation"]._CreateNodeAndMorphAnimationFromAnimationGroups(babylonScene, _this._animations, nodeMap, _this._nodes, binaryWriter, _this._bufferViews, _this._accessors, _this._convertToRightHandedSystemMap, _this._animationSampleRate);
            }
            return nodeMap;
        });
    };
    /**
     * Creates a glTF node from a Babylon mesh
     * @param babylonMesh Source Babylon mesh
     * @param binaryWriter Buffer for storing geometry data
     * @param convertToRightHandedSystem Converts the values to right-handed
     * @param nodeMap Node mapping of unique id to glTF node index
     * @returns glTF node
     */
    _Exporter.prototype.createNodeAsync = function (babylonNode, binaryWriter, convertToRightHandedSystem, nodeMap) {
        var _this = this;
        return Promise.resolve().then(function () {
            // create node to hold translation/rotation/scale and the mesh
            var node = {};
            // create mesh
            var mesh = { primitives: [] };
            if (babylonNode.name) {
                node.name = babylonNode.name;
            }
            if (babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["TransformNode"]) {
                // Set transformation
                _this.setNodeTransformation(node, babylonNode, convertToRightHandedSystem);
                if (babylonNode instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Mesh"]) {
                    var morphTargetManager = babylonNode.morphTargetManager;
                    if (morphTargetManager && morphTargetManager.numTargets > 0) {
                        mesh.weights = [];
                        for (var i = 0; i < morphTargetManager.numTargets; ++i) {
                            mesh.weights.push(morphTargetManager.getTarget(i).influence);
                        }
                    }
                }
                return _this.setPrimitiveAttributesAsync(mesh, babylonNode, binaryWriter, convertToRightHandedSystem).then(function () {
                    if (mesh.primitives.length) {
                        _this._meshes.push(mesh);
                        node.mesh = _this._meshes.length - 1;
                    }
                    return node;
                });
            }
            else {
                return node;
            }
        });
    };
    /**
     * Creates a glTF skin from a Babylon skeleton
     * @param babylonScene Babylon Scene
     * @param nodes Babylon transform nodes
     * @param binaryWriter Buffer to write binary data to
     * @returns Node mapping of unique id to index
     */
    _Exporter.prototype.createSkinsAsync = function (babylonScene, nodeMap, binaryWriter) {
        var promiseChain = Promise.resolve();
        var skinMap = {};
        var _loop_2 = function (skeleton) {
            // create skin
            var skin = { joints: [] };
            var inverseBindMatrices = [];
            var skeletonMesh = babylonScene.meshes.find(function (mesh) { mesh.skeleton === skeleton; });
            skin.skeleton = skeleton.overrideMesh === null ? (skeletonMesh ? nodeMap[skeletonMesh.uniqueId] : undefined) : nodeMap[skeleton.overrideMesh.uniqueId];
            var boneIndexMap = {};
            var boneIndexMax = -1;
            var boneIndex = -1;
            for (var _i = 0, _a = skeleton.bones; _i < _a.length; _i++) {
                var bone = _a[_i];
                boneIndex = bone.getIndex();
                if (boneIndex > -1) {
                    boneIndexMap[boneIndex] = bone;
                }
                boneIndexMax = Math.max(boneIndexMax, boneIndex);
            }
            for (var i = 0; i <= boneIndexMax; ++i) {
                var bone = boneIndexMap[i];
                var transformNode = bone.getTransformNode();
                if (transformNode) {
                    var boneMatrix = bone.getInvertedAbsoluteTransform();
                    if (this_2._convertToRightHandedSystem) {
                        _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._GetRightHandedMatrixFromRef(boneMatrix);
                    }
                    inverseBindMatrices.push(boneMatrix);
                    skin.joints.push(nodeMap[transformNode.uniqueId]);
                }
            }
            // create buffer view for inverse bind matrices
            var byteStride = 64; // 4 x 4 matrix of 32 bit float
            var byteLength = inverseBindMatrices.length * byteStride;
            var bufferViewOffset = binaryWriter.getByteOffset();
            var bufferView = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateBufferView(0, bufferViewOffset, byteLength, byteStride, "InverseBindMatrices" + " - " + skeleton.name);
            this_2._bufferViews.push(bufferView);
            var bufferViewIndex = this_2._bufferViews.length - 1;
            var bindMatrixAccessor = _glTFUtilities__WEBPACK_IMPORTED_MODULE_3__["_GLTFUtilities"]._CreateAccessor(bufferViewIndex, "InverseBindMatrices" + " - " + skeleton.name, "MAT4" /* MAT4 */, 5126 /* FLOAT */, inverseBindMatrices.length, null, null, null);
            var inverseBindAccessorIndex = this_2._accessors.push(bindMatrixAccessor) - 1;
            skin.inverseBindMatrices = inverseBindAccessorIndex;
            this_2._skins.push(skin);
            skinMap[skeleton.uniqueId] = this_2._skins.length - 1;
            inverseBindMatrices.forEach(function (mat) {
                mat.m.forEach(function (cell) {
                    binaryWriter.setFloat32(cell);
                });
            });
        };
        var this_2 = this;
        for (var _i = 0, _a = babylonScene.skeletons; _i < _a.length; _i++) {
            var skeleton = _a[_i];
            _loop_2(skeleton);
        }
        return promiseChain.then(function () {
            return skinMap;
        });
    };
    _Exporter._ExtensionNames = new Array();
    _Exporter._ExtensionFactories = {};
    return _Exporter;
}());

/**
 * @hidden
 *
 * Stores glTF binary data.  If the array buffer byte length is exceeded, it doubles in size dynamically
 */
var _BinaryWriter = /** @class */ (function () {
    /**
     * Initialize binary writer with an initial byte length
     * @param byteLength Initial byte length of the array buffer
     */
    function _BinaryWriter(byteLength) {
        this._arrayBuffer = new ArrayBuffer(byteLength);
        this._dataView = new DataView(this._arrayBuffer);
        this._byteOffset = 0;
    }
    /**
     * Resize the array buffer to the specified byte length
     * @param byteLength
     */
    _BinaryWriter.prototype.resizeBuffer = function (byteLength) {
        var newBuffer = new ArrayBuffer(byteLength);
        var oldUint8Array = new Uint8Array(this._arrayBuffer);
        var newUint8Array = new Uint8Array(newBuffer);
        for (var i = 0, length_10 = newUint8Array.byteLength; i < length_10; ++i) {
            newUint8Array[i] = oldUint8Array[i];
        }
        this._arrayBuffer = newBuffer;
        this._dataView = new DataView(this._arrayBuffer);
        return newBuffer;
    };
    /**
     * Get an array buffer with the length of the byte offset
     * @returns ArrayBuffer resized to the byte offset
     */
    _BinaryWriter.prototype.getArrayBuffer = function () {
        return this.resizeBuffer(this.getByteOffset());
    };
    /**
     * Get the byte offset of the array buffer
     * @returns byte offset
     */
    _BinaryWriter.prototype.getByteOffset = function () {
        if (this._byteOffset == undefined) {
            throw new Error("Byte offset is undefined!");
        }
        return this._byteOffset;
    };
    /**
     * Stores an UInt8 in the array buffer
     * @param entry
     * @param byteOffset If defined, specifies where to set the value as an offset.
     */
    _BinaryWriter.prototype.setUInt8 = function (entry, byteOffset) {
        if (byteOffset != null) {
            if (byteOffset < this._byteOffset) {
                this._dataView.setUint8(byteOffset, entry);
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('BinaryWriter: byteoffset is greater than the current binary buffer length!');
            }
        }
        else {
            if (this._byteOffset + 1 > this._arrayBuffer.byteLength) {
                this.resizeBuffer(this._arrayBuffer.byteLength * 2);
            }
            this._dataView.setUint8(this._byteOffset, entry);
            this._byteOffset += 1;
        }
    };
    /**
     * Stores an UInt16 in the array buffer
     * @param entry
     * @param byteOffset If defined, specifies where to set the value as an offset.
     */
    _BinaryWriter.prototype.setUInt16 = function (entry, byteOffset) {
        if (byteOffset != null) {
            if (byteOffset < this._byteOffset) {
                this._dataView.setUint16(byteOffset, entry, true);
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('BinaryWriter: byteoffset is greater than the current binary buffer length!');
            }
        }
        else {
            if (this._byteOffset + 2 > this._arrayBuffer.byteLength) {
                this.resizeBuffer(this._arrayBuffer.byteLength * 2);
            }
            this._dataView.setUint16(this._byteOffset, entry, true);
            this._byteOffset += 2;
        }
    };
    /**
     * Gets an UInt32 in the array buffer
     * @param entry
     * @param byteOffset If defined, specifies where to set the value as an offset.
     */
    _BinaryWriter.prototype.getUInt32 = function (byteOffset) {
        if (byteOffset < this._byteOffset) {
            return this._dataView.getUint32(byteOffset, true);
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('BinaryWriter: byteoffset is greater than the current binary buffer length!');
            throw new Error('BinaryWriter: byteoffset is greater than the current binary buffer length!');
        }
    };
    _BinaryWriter.prototype.getVector3Float32FromRef = function (vector3, byteOffset) {
        if (byteOffset + 8 > this._byteOffset) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("BinaryWriter: byteoffset is greater than the current binary buffer length!");
        }
        else {
            vector3.x = this._dataView.getFloat32(byteOffset, true);
            vector3.y = this._dataView.getFloat32(byteOffset + 4, true);
            vector3.z = this._dataView.getFloat32(byteOffset + 8, true);
        }
    };
    _BinaryWriter.prototype.setVector3Float32FromRef = function (vector3, byteOffset) {
        if (byteOffset + 8 > this._byteOffset) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("BinaryWriter: byteoffset is greater than the current binary buffer length!");
        }
        else {
            this._dataView.setFloat32(byteOffset, vector3.x, true);
            this._dataView.setFloat32(byteOffset + 4, vector3.y, true);
            this._dataView.setFloat32(byteOffset + 8, vector3.z, true);
        }
    };
    _BinaryWriter.prototype.getVector4Float32FromRef = function (vector4, byteOffset) {
        if (byteOffset + 12 > this._byteOffset) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("BinaryWriter: byteoffset is greater than the current binary buffer length!");
        }
        else {
            vector4.x = this._dataView.getFloat32(byteOffset, true);
            vector4.y = this._dataView.getFloat32(byteOffset + 4, true);
            vector4.z = this._dataView.getFloat32(byteOffset + 8, true);
            vector4.w = this._dataView.getFloat32(byteOffset + 12, true);
        }
    };
    _BinaryWriter.prototype.setVector4Float32FromRef = function (vector4, byteOffset) {
        if (byteOffset + 12 > this._byteOffset) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error("BinaryWriter: byteoffset is greater than the current binary buffer length!");
        }
        else {
            this._dataView.setFloat32(byteOffset, vector4.x, true);
            this._dataView.setFloat32(byteOffset + 4, vector4.y, true);
            this._dataView.setFloat32(byteOffset + 8, vector4.z, true);
            this._dataView.setFloat32(byteOffset + 12, vector4.w, true);
        }
    };
    /**
     * Stores a Float32 in the array buffer
     * @param entry
     */
    _BinaryWriter.prototype.setFloat32 = function (entry, byteOffset) {
        if (isNaN(entry)) {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('Invalid data being written!');
        }
        if (byteOffset != null) {
            if (byteOffset < this._byteOffset) {
                this._dataView.setFloat32(byteOffset, entry, true);
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('BinaryWriter: byteoffset is greater than the current binary length!');
            }
        }
        if (this._byteOffset + 4 > this._arrayBuffer.byteLength) {
            this.resizeBuffer(this._arrayBuffer.byteLength * 2);
        }
        this._dataView.setFloat32(this._byteOffset, entry, true);
        this._byteOffset += 4;
    };
    /**
     * Stores an UInt32 in the array buffer
     * @param entry
     * @param byteOffset If defined, specifies where to set the value as an offset.
     */
    _BinaryWriter.prototype.setUInt32 = function (entry, byteOffset) {
        if (byteOffset != null) {
            if (byteOffset < this._byteOffset) {
                this._dataView.setUint32(byteOffset, entry, true);
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_1__["Tools"].Error('BinaryWriter: byteoffset is greater than the current binary buffer length!');
            }
        }
        else {
            if (this._byteOffset + 4 > this._arrayBuffer.byteLength) {
                this.resizeBuffer(this._arrayBuffer.byteLength * 2);
            }
            this._dataView.setUint32(this._byteOffset, entry, true);
            this._byteOffset += 4;
        }
    };
    return _BinaryWriter;
}());



/***/ }),

/***/ "./glTF/2.0/glTFExporterExtension.ts":
/*!*******************************************!*\
  !*** ./glTF/2.0/glTFExporterExtension.ts ***!
  \*******************************************/
/*! exports provided: __IGLTFExporterExtensionV2 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "__IGLTFExporterExtensionV2", function() { return __IGLTFExporterExtensionV2; });
/** @hidden */
var __IGLTFExporterExtensionV2 = 0; // I am here to allow dts to be created


/***/ }),

/***/ "./glTF/2.0/glTFMaterialExporter.ts":
/*!******************************************!*\
  !*** ./glTF/2.0/glTFMaterialExporter.ts ***!
  \******************************************/
/*! exports provided: _GLTFMaterialExporter */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_GLTFMaterialExporter", function() { return _GLTFMaterialExporter; });
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.vector */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__);













/**
 * Utility methods for working with glTF material conversion properties.  This class should only be used internally
 * @hidden
 */
var _GLTFMaterialExporter = /** @class */ (function () {
    function _GLTFMaterialExporter(exporter) {
        /**
         * Mapping to store textures
         */
        this._textureMap = {};
        this._textureMap = {};
        this._exporter = exporter;
    }
    /**
     * Specifies if two colors are approximately equal in value
     * @param color1 first color to compare to
     * @param color2 second color to compare to
     * @param epsilon threshold value
     */
    _GLTFMaterialExporter.FuzzyEquals = function (color1, color2, epsilon) {
        return babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scalar"].WithinEpsilon(color1.r, color2.r, epsilon) &&
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scalar"].WithinEpsilon(color1.g, color2.g, epsilon) &&
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scalar"].WithinEpsilon(color1.b, color2.b, epsilon);
    };
    /**
     * Gets the materials from a Babylon scene and converts them to glTF materials
     * @param scene babylonjs scene
     * @param mimeType texture mime type
     * @param images array of images
     * @param textures array of textures
     * @param materials array of materials
     * @param imageData mapping of texture names to base64 textures
     * @param hasTextureCoords specifies if texture coordinates are present on the material
     */
    _GLTFMaterialExporter.prototype._convertMaterialsToGLTFAsync = function (babylonMaterials, mimeType, hasTextureCoords) {
        var promises = [];
        for (var _i = 0, babylonMaterials_1 = babylonMaterials; _i < babylonMaterials_1.length; _i++) {
            var babylonMaterial = babylonMaterials_1[_i];
            if (babylonMaterial instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["StandardMaterial"]) {
                promises.push(this._convertStandardMaterialAsync(babylonMaterial, mimeType, hasTextureCoords));
            }
            else if (babylonMaterial instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["PBRMetallicRoughnessMaterial"]) {
                promises.push(this._convertPBRMetallicRoughnessMaterialAsync(babylonMaterial, mimeType, hasTextureCoords));
            }
            else if (babylonMaterial instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"]) {
                promises.push(this._convertPBRMaterialAsync(babylonMaterial, mimeType, hasTextureCoords));
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Unsupported material type: " + babylonMaterial.name);
            }
        }
        return Promise.all(promises).then(function () { });
    };
    /**
     * Makes a copy of the glTF material without the texture parameters
     * @param originalMaterial original glTF material
     * @returns glTF material without texture parameters
     */
    _GLTFMaterialExporter.prototype._stripTexturesFromMaterial = function (originalMaterial) {
        var newMaterial = {};
        if (originalMaterial) {
            newMaterial.name = originalMaterial.name;
            newMaterial.doubleSided = originalMaterial.doubleSided;
            newMaterial.alphaMode = originalMaterial.alphaMode;
            newMaterial.alphaCutoff = originalMaterial.alphaCutoff;
            newMaterial.emissiveFactor = originalMaterial.emissiveFactor;
            var originalPBRMetallicRoughness = originalMaterial.pbrMetallicRoughness;
            if (originalPBRMetallicRoughness) {
                newMaterial.pbrMetallicRoughness = {};
                newMaterial.pbrMetallicRoughness.baseColorFactor = originalPBRMetallicRoughness.baseColorFactor;
                newMaterial.pbrMetallicRoughness.metallicFactor = originalPBRMetallicRoughness.metallicFactor;
                newMaterial.pbrMetallicRoughness.roughnessFactor = originalPBRMetallicRoughness.roughnessFactor;
            }
        }
        return newMaterial;
    };
    /**
     * Specifies if the material has any texture parameters present
     * @param material glTF Material
     * @returns boolean specifying if texture parameters are present
     */
    _GLTFMaterialExporter.prototype._hasTexturesPresent = function (material) {
        if (material.emissiveTexture || material.normalTexture || material.occlusionTexture) {
            return true;
        }
        var pbrMat = material.pbrMetallicRoughness;
        if (pbrMat) {
            if (pbrMat.baseColorTexture || pbrMat.metallicRoughnessTexture) {
                return true;
            }
        }
        return false;
    };
    /**
     * Converts a Babylon StandardMaterial to a glTF Metallic Roughness Material
     * @param babylonStandardMaterial
     * @returns glTF Metallic Roughness Material representation
     */
    _GLTFMaterialExporter.prototype._convertToGLTFPBRMetallicRoughness = function (babylonStandardMaterial) {
        var P0 = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector2"](0, 1);
        var P1 = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector2"](0, 0.1);
        var P2 = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector2"](0, 0.1);
        var P3 = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector2"](1300, 0.1);
        /**
         * Given the control points, solve for x based on a given t for a cubic bezier curve
         * @param t a value between 0 and 1
         * @param p0 first control point
         * @param p1 second control point
         * @param p2 third control point
         * @param p3 fourth control point
         * @returns number result of cubic bezier curve at the specified t
         */
        function _cubicBezierCurve(t, p0, p1, p2, p3) {
            return ((1 - t) * (1 - t) * (1 - t) * p0 +
                3 * (1 - t) * (1 - t) * t * p1 +
                3 * (1 - t) * t * t * p2 +
                t * t * t * p3);
        }
        /**
         * Evaluates a specified specular power value to determine the appropriate roughness value,
         * based on a pre-defined cubic bezier curve with specular on the abscissa axis (x-axis)
         * and roughness on the ordinant axis (y-axis)
         * @param specularPower specular power of standard material
         * @returns Number representing the roughness value
         */
        function _solveForRoughness(specularPower) {
            var t = Math.pow(specularPower / P3.x, 0.333333);
            return _cubicBezierCurve(t, P0.y, P1.y, P2.y, P3.y);
        }
        var diffuse = babylonStandardMaterial.diffuseColor.toLinearSpace().scale(0.5);
        var opacity = babylonStandardMaterial.alpha;
        var specularPower = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scalar"].Clamp(babylonStandardMaterial.specularPower, 0, _GLTFMaterialExporter._MaxSpecularPower);
        var roughness = _solveForRoughness(specularPower);
        var glTFPbrMetallicRoughness = {
            baseColorFactor: [
                diffuse.r,
                diffuse.g,
                diffuse.b,
                opacity
            ],
            metallicFactor: 0,
            roughnessFactor: roughness,
        };
        return glTFPbrMetallicRoughness;
    };
    /**
     * Computes the metallic factor
     * @param diffuse diffused value
     * @param specular specular value
     * @param oneMinusSpecularStrength one minus the specular strength
     * @returns metallic value
     */
    _GLTFMaterialExporter._SolveMetallic = function (diffuse, specular, oneMinusSpecularStrength) {
        if (specular < this._DielectricSpecular.r) {
            this._DielectricSpecular;
            return 0;
        }
        var a = this._DielectricSpecular.r;
        var b = diffuse * oneMinusSpecularStrength / (1.0 - this._DielectricSpecular.r) + specular - 2.0 * this._DielectricSpecular.r;
        var c = this._DielectricSpecular.r - specular;
        var D = b * b - 4.0 * a * c;
        return babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scalar"].Clamp((-b + Math.sqrt(D)) / (2.0 * a), 0, 1);
    };
    /**
     * Sets the glTF alpha mode to a glTF material from the Babylon Material
     * @param glTFMaterial glTF material
     * @param babylonMaterial Babylon material
     */
    _GLTFMaterialExporter._SetAlphaMode = function (glTFMaterial, babylonMaterial) {
        if (babylonMaterial.needAlphaBlending()) {
            glTFMaterial.alphaMode = "BLEND" /* BLEND */;
        }
        else if (babylonMaterial.needAlphaTesting()) {
            glTFMaterial.alphaMode = "MASK" /* MASK */;
            glTFMaterial.alphaCutoff = babylonMaterial.alphaCutOff;
        }
    };
    /**
     * Converts a Babylon Standard Material to a glTF Material
     * @param babylonStandardMaterial BJS Standard Material
     * @param mimeType mime type to use for the textures
     * @param images array of glTF image interfaces
     * @param textures array of glTF texture interfaces
     * @param materials array of glTF material interfaces
     * @param imageData map of image file name to data
     * @param hasTextureCoords specifies if texture coordinates are present on the submesh to determine if textures should be applied
     */
    _GLTFMaterialExporter.prototype._convertStandardMaterialAsync = function (babylonStandardMaterial, mimeType, hasTextureCoords) {
        var materialMap = this._exporter._materialMap;
        var materials = this._exporter._materials;
        var promises = [];
        var glTFPbrMetallicRoughness = this._convertToGLTFPBRMetallicRoughness(babylonStandardMaterial);
        var glTFMaterial = { name: babylonStandardMaterial.name };
        if (babylonStandardMaterial.backFaceCulling != null && !babylonStandardMaterial.backFaceCulling) {
            if (!babylonStandardMaterial.twoSidedLighting) {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn(babylonStandardMaterial.name + ": Back-face culling enabled and two-sided lighting disabled is not supported in glTF.");
            }
            glTFMaterial.doubleSided = true;
        }
        if (hasTextureCoords) {
            if (babylonStandardMaterial.diffuseTexture) {
                promises.push(this._exportTextureAsync(babylonStandardMaterial.diffuseTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFPbrMetallicRoughness.baseColorTexture = glTFTexture;
                    }
                }));
            }
            if (babylonStandardMaterial.bumpTexture) {
                promises.push(this._exportTextureAsync(babylonStandardMaterial.bumpTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFMaterial.normalTexture = glTFTexture;
                        if (babylonStandardMaterial.bumpTexture != null && babylonStandardMaterial.bumpTexture.level !== 1) {
                            glTFMaterial.normalTexture.scale = babylonStandardMaterial.bumpTexture.level;
                        }
                    }
                }));
            }
            if (babylonStandardMaterial.emissiveTexture) {
                glTFMaterial.emissiveFactor = [1.0, 1.0, 1.0];
                promises.push(this._exportTextureAsync(babylonStandardMaterial.emissiveTexture, mimeType).then(function (glTFEmissiveTexture) {
                    if (glTFEmissiveTexture) {
                        glTFMaterial.emissiveTexture = glTFEmissiveTexture;
                    }
                }));
            }
            if (babylonStandardMaterial.ambientTexture) {
                promises.push(this._exportTextureAsync(babylonStandardMaterial.ambientTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        var occlusionTexture = {
                            index: glTFTexture.index
                        };
                        glTFMaterial.occlusionTexture = occlusionTexture;
                        occlusionTexture.strength = 1.0;
                    }
                }));
            }
        }
        if (babylonStandardMaterial.alpha < 1.0 || babylonStandardMaterial.opacityTexture) {
            if (babylonStandardMaterial.alphaMode === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Constants"].ALPHA_COMBINE) {
                glTFMaterial.alphaMode = "BLEND" /* BLEND */;
            }
            else {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn(babylonStandardMaterial.name + ": glTF 2.0 does not support alpha mode: " + babylonStandardMaterial.alphaMode.toString());
            }
        }
        if (babylonStandardMaterial.emissiveColor && !_GLTFMaterialExporter.FuzzyEquals(babylonStandardMaterial.emissiveColor, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].Black(), _GLTFMaterialExporter._Epsilon)) {
            glTFMaterial.emissiveFactor = babylonStandardMaterial.emissiveColor.asArray();
        }
        glTFMaterial.pbrMetallicRoughness = glTFPbrMetallicRoughness;
        _GLTFMaterialExporter._SetAlphaMode(glTFMaterial, babylonStandardMaterial);
        materials.push(glTFMaterial);
        materialMap[babylonStandardMaterial.uniqueId] = materials.length - 1;
        return this._finishMaterial(promises, glTFMaterial, babylonStandardMaterial, mimeType);
    };
    _GLTFMaterialExporter.prototype._finishMaterial = function (promises, glTFMaterial, babylonMaterial, mimeType) {
        var _this = this;
        return Promise.all(promises).then(function () {
            var textures = _this._exporter._extensionsPostExportMaterialAdditionalTextures("exportMaterial", glTFMaterial, babylonMaterial);
            var tasks = null;
            for (var _i = 0, textures_1 = textures; _i < textures_1.length; _i++) {
                var texture = textures_1[_i];
                if (!tasks) {
                    tasks = [];
                }
                tasks.push(_this._exportTextureAsync(texture, mimeType));
            }
            if (!tasks) {
                tasks = [Promise.resolve(null)];
            }
            return Promise.all(tasks).then(function () {
                var extensionWork = _this._exporter._extensionsPostExportMaterialAsync("exportMaterial", glTFMaterial, babylonMaterial);
                if (!extensionWork) {
                    return glTFMaterial;
                }
                return extensionWork.then(function () { return glTFMaterial; });
            });
        });
    };
    /**
     * Converts a Babylon PBR Metallic Roughness Material to a glTF Material
     * @param babylonPBRMetalRoughMaterial BJS PBR Metallic Roughness Material
     * @param mimeType mime type to use for the textures
     * @param images array of glTF image interfaces
     * @param textures array of glTF texture interfaces
     * @param materials array of glTF material interfaces
     * @param imageData map of image file name to data
     * @param hasTextureCoords specifies if texture coordinates are present on the submesh to determine if textures should be applied
     */
    _GLTFMaterialExporter.prototype._convertPBRMetallicRoughnessMaterialAsync = function (babylonPBRMetalRoughMaterial, mimeType, hasTextureCoords) {
        var materialMap = this._exporter._materialMap;
        var materials = this._exporter._materials;
        var promises = [];
        var glTFPbrMetallicRoughness = {};
        if (babylonPBRMetalRoughMaterial.baseColor) {
            glTFPbrMetallicRoughness.baseColorFactor = [
                babylonPBRMetalRoughMaterial.baseColor.r,
                babylonPBRMetalRoughMaterial.baseColor.g,
                babylonPBRMetalRoughMaterial.baseColor.b,
                babylonPBRMetalRoughMaterial.alpha
            ];
        }
        if (babylonPBRMetalRoughMaterial.metallic != null && babylonPBRMetalRoughMaterial.metallic !== 1) {
            glTFPbrMetallicRoughness.metallicFactor = babylonPBRMetalRoughMaterial.metallic;
        }
        if (babylonPBRMetalRoughMaterial.roughness != null && babylonPBRMetalRoughMaterial.roughness !== 1) {
            glTFPbrMetallicRoughness.roughnessFactor = babylonPBRMetalRoughMaterial.roughness;
        }
        var glTFMaterial = {
            name: babylonPBRMetalRoughMaterial.name
        };
        if (babylonPBRMetalRoughMaterial.doubleSided) {
            glTFMaterial.doubleSided = babylonPBRMetalRoughMaterial.doubleSided;
        }
        _GLTFMaterialExporter._SetAlphaMode(glTFMaterial, babylonPBRMetalRoughMaterial);
        if (hasTextureCoords) {
            if (babylonPBRMetalRoughMaterial.baseTexture != null) {
                promises.push(this._exportTextureAsync(babylonPBRMetalRoughMaterial.baseTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFPbrMetallicRoughness.baseColorTexture = glTFTexture;
                    }
                }));
            }
            if (babylonPBRMetalRoughMaterial.normalTexture) {
                promises.push(this._exportTextureAsync(babylonPBRMetalRoughMaterial.normalTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFMaterial.normalTexture = glTFTexture;
                        if (babylonPBRMetalRoughMaterial.normalTexture.level !== 1) {
                            glTFMaterial.normalTexture.scale = babylonPBRMetalRoughMaterial.normalTexture.level;
                        }
                    }
                }));
            }
            if (babylonPBRMetalRoughMaterial.occlusionTexture) {
                promises.push(this._exportTextureAsync(babylonPBRMetalRoughMaterial.occlusionTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFMaterial.occlusionTexture = glTFTexture;
                        if (babylonPBRMetalRoughMaterial.occlusionStrength != null) {
                            glTFMaterial.occlusionTexture.strength = babylonPBRMetalRoughMaterial.occlusionStrength;
                        }
                    }
                }));
            }
            if (babylonPBRMetalRoughMaterial.emissiveTexture) {
                promises.push(this._exportTextureAsync(babylonPBRMetalRoughMaterial.emissiveTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFMaterial.emissiveTexture = glTFTexture;
                    }
                }));
            }
        }
        if (_GLTFMaterialExporter.FuzzyEquals(babylonPBRMetalRoughMaterial.emissiveColor, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].Black(), _GLTFMaterialExporter._Epsilon)) {
            glTFMaterial.emissiveFactor = babylonPBRMetalRoughMaterial.emissiveColor.asArray();
        }
        glTFMaterial.pbrMetallicRoughness = glTFPbrMetallicRoughness;
        materials.push(glTFMaterial);
        materialMap[babylonPBRMetalRoughMaterial.uniqueId] = materials.length - 1;
        return this._finishMaterial(promises, glTFMaterial, babylonPBRMetalRoughMaterial, mimeType);
    };
    /**
     * Converts an image typed array buffer to a base64 image
     * @param buffer typed array buffer
     * @param width width of the image
     * @param height height of the image
     * @param mimeType mimetype of the image
     * @returns base64 image string
     */
    _GLTFMaterialExporter.prototype._createBase64FromCanvasAsync = function (buffer, width, height, mimeType) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            var hostingScene;
            var textureType = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Constants"].TEXTURETYPE_UNSIGNED_INT;
            var engine = _this._exporter._getLocalEngine();
            hostingScene = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Scene"](engine);
            // Create a temporary texture with the texture buffer data
            var tempTexture = engine.createRawTexture(buffer, width, height, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Constants"].TEXTUREFORMAT_RGBA, false, true, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_SAMPLINGMODE, null, textureType);
            var postProcess = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["PostProcess"]("pass", "pass", null, null, 1, null, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_SAMPLINGMODE, engine, false, undefined, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Constants"].TEXTURETYPE_UNSIGNED_INT, undefined, null, false);
            postProcess.getEffect().executeWhenCompiled(function () {
                var _a, _b;
                postProcess.onApply = function (effect) {
                    effect._bindTexture("textureSampler", tempTexture);
                };
                // Set the size of the texture
                engine.setSize(width, height);
                hostingScene.postProcessManager.directRender([postProcess], null);
                postProcess.dispose();
                tempTexture.dispose();
                // Read data from WebGL
                var canvas0 = engine.getRenderingCanvas();
                var canvas = document.createElement("canvas");
                canvas.width = (_a = canvas0 === null || canvas0 === void 0 ? void 0 : canvas0.width) !== null && _a !== void 0 ? _a : 0;
                canvas.height = (_b = canvas0 === null || canvas0 === void 0 ? void 0 : canvas0.height) !== null && _b !== void 0 ? _b : 0;
                var destCtx = canvas.getContext('2d');
                destCtx.drawImage(canvas0, 0, 0);
                if (canvas) {
                    if (!canvas.toBlob) { // fallback for browsers without "canvas.toBlob"
                        var dataURL = canvas.toDataURL();
                        resolve(dataURL);
                    }
                    else {
                        babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].ToBlob(canvas, function (blob) {
                            canvas = null;
                            if (blob) {
                                var fileReader = new FileReader();
                                fileReader.onload = function (event) {
                                    var base64String = event.target.result;
                                    hostingScene.dispose();
                                    resolve(base64String);
                                };
                                fileReader.readAsDataURL(blob);
                            }
                            else {
                                reject("gltfMaterialExporter: Failed to get blob from image canvas!");
                            }
                        }, mimeType);
                    }
                }
                else {
                    reject("Engine is missing a canvas!");
                }
            });
        });
    };
    /**
     * Generates a white texture based on the specified width and height
     * @param width width of the texture in pixels
     * @param height height of the texture in pixels
     * @param scene babylonjs scene
     * @returns white texture
     */
    _GLTFMaterialExporter.prototype._createWhiteTexture = function (width, height, scene) {
        var data = new Uint8Array(width * height * 4);
        for (var i = 0; i < data.length; i = i + 4) {
            data[i] = data[i + 1] = data[i + 2] = data[i + 3] = 0xFF;
        }
        var rawTexture = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["RawTexture"].CreateRGBATexture(data, width, height, scene);
        return rawTexture;
    };
    /**
     * Resizes the two source textures to the same dimensions.  If a texture is null, a default white texture is generated.  If both textures are null, returns null
     * @param texture1 first texture to resize
     * @param texture2 second texture to resize
     * @param scene babylonjs scene
     * @returns resized textures or null
     */
    _GLTFMaterialExporter.prototype._resizeTexturesToSameDimensions = function (texture1, texture2, scene) {
        var texture1Size = texture1 ? texture1.getSize() : { width: 0, height: 0 };
        var texture2Size = texture2 ? texture2.getSize() : { width: 0, height: 0 };
        var resizedTexture1;
        var resizedTexture2;
        if (texture1Size.width < texture2Size.width) {
            if (texture1 && texture1 instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"]) {
                resizedTexture1 = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TextureTools"].CreateResizedCopy(texture1, texture2Size.width, texture2Size.height, true);
            }
            else {
                resizedTexture1 = this._createWhiteTexture(texture2Size.width, texture2Size.height, scene);
            }
            resizedTexture2 = texture2;
        }
        else if (texture1Size.width > texture2Size.width) {
            if (texture2 && texture2 instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"]) {
                resizedTexture2 = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["TextureTools"].CreateResizedCopy(texture2, texture1Size.width, texture1Size.height, true);
            }
            else {
                resizedTexture2 = this._createWhiteTexture(texture1Size.width, texture1Size.height, scene);
            }
            resizedTexture1 = texture1;
        }
        else {
            resizedTexture1 = texture1;
            resizedTexture2 = texture2;
        }
        return {
            "texture1": resizedTexture1,
            "texture2": resizedTexture2
        };
    };
    /**
     * Converts an array of pixels to a Float32Array
     * Throws an error if the pixel format is not supported
     * @param pixels - array buffer containing pixel values
     * @returns Float32 of pixels
     */
    _GLTFMaterialExporter.prototype._convertPixelArrayToFloat32 = function (pixels) {
        if (pixels instanceof Uint8Array) {
            var length_1 = pixels.length;
            var buffer = new Float32Array(pixels.length);
            for (var i = 0; i < length_1; ++i) {
                buffer[i] = pixels[i] / 255;
            }
            return buffer;
        }
        else if (pixels instanceof Float32Array) {
            return pixels;
        }
        else {
            throw new Error('Unsupported pixel format!');
        }
    };
    /**
     * Convert Specular Glossiness Textures to Metallic Roughness
     * See link below for info on the material conversions from PBR Metallic/Roughness and Specular/Glossiness
     * @link https://github.com/KhronosGroup/glTF/blob/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness/examples/convert-between-workflows-bjs/js/babylon.pbrUtilities.js
     * @param diffuseTexture texture used to store diffuse information
     * @param specularGlossinessTexture texture used to store specular and glossiness information
     * @param factors specular glossiness material factors
     * @param mimeType the mime type to use for the texture
     * @returns pbr metallic roughness interface or null
     */
    _GLTFMaterialExporter.prototype._convertSpecularGlossinessTexturesToMetallicRoughnessAsync = function (diffuseTexture, specularGlossinessTexture, factors, mimeType) {
        var promises = [];
        if (!(diffuseTexture || specularGlossinessTexture)) {
            return Promise.reject('_ConvertSpecularGlosinessTexturesToMetallicRoughness: diffuse and specular glossiness textures are not defined!');
        }
        var scene = diffuseTexture ? diffuseTexture.getScene() : specularGlossinessTexture ? specularGlossinessTexture.getScene() : null;
        if (scene) {
            var resizedTextures = this._resizeTexturesToSameDimensions(diffuseTexture, specularGlossinessTexture, scene);
            var diffuseSize = resizedTextures.texture1.getSize();
            var diffuseBuffer = void 0;
            var specularGlossinessBuffer = void 0;
            var width = diffuseSize.width;
            var height = diffuseSize.height;
            var diffusePixels = resizedTextures.texture1.readPixels();
            var specularPixels = resizedTextures.texture2.readPixels();
            if (diffusePixels) {
                diffuseBuffer = this._convertPixelArrayToFloat32(diffusePixels);
            }
            else {
                return Promise.reject("Failed to retrieve pixels from diffuse texture!");
            }
            if (specularPixels) {
                specularGlossinessBuffer = this._convertPixelArrayToFloat32(specularPixels);
            }
            else {
                return Promise.reject("Failed to retrieve pixels from specular glossiness texture!");
            }
            var byteLength = specularGlossinessBuffer.byteLength;
            var metallicRoughnessBuffer = new Uint8Array(byteLength);
            var baseColorBuffer = new Uint8Array(byteLength);
            var strideSize = 4;
            var maxBaseColor = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].Black();
            var maxMetallic = 0;
            var maxRoughness = 0;
            for (var h = 0; h < height; ++h) {
                for (var w = 0; w < width; ++w) {
                    var offset = (width * h + w) * strideSize;
                    var diffuseColor = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"](diffuseBuffer[offset], diffuseBuffer[offset + 1], diffuseBuffer[offset + 2]).toLinearSpace().multiply(factors.diffuseColor);
                    var specularColor = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"](specularGlossinessBuffer[offset], specularGlossinessBuffer[offset + 1], specularGlossinessBuffer[offset + 2]).toLinearSpace().multiply(factors.specularColor);
                    var glossiness = (specularGlossinessBuffer[offset + 3]) * factors.glossiness;
                    var specularGlossiness = {
                        diffuseColor: diffuseColor,
                        specularColor: specularColor,
                        glossiness: glossiness
                    };
                    var metallicRoughness = this._convertSpecularGlossinessToMetallicRoughness(specularGlossiness);
                    maxBaseColor.r = Math.max(maxBaseColor.r, metallicRoughness.baseColor.r);
                    maxBaseColor.g = Math.max(maxBaseColor.g, metallicRoughness.baseColor.g);
                    maxBaseColor.b = Math.max(maxBaseColor.b, metallicRoughness.baseColor.b);
                    maxMetallic = Math.max(maxMetallic, metallicRoughness.metallic);
                    maxRoughness = Math.max(maxRoughness, metallicRoughness.roughness);
                    baseColorBuffer[offset] = metallicRoughness.baseColor.r * 255;
                    baseColorBuffer[offset + 1] = metallicRoughness.baseColor.g * 255;
                    baseColorBuffer[offset + 2] = metallicRoughness.baseColor.b * 255;
                    baseColorBuffer[offset + 3] = resizedTextures.texture1.hasAlpha ? diffuseBuffer[offset + 3] * 255 : 255;
                    metallicRoughnessBuffer[offset] = 0;
                    metallicRoughnessBuffer[offset + 1] = metallicRoughness.roughness * 255;
                    metallicRoughnessBuffer[offset + 2] = metallicRoughness.metallic * 255;
                    metallicRoughnessBuffer[offset + 3] = 255;
                }
            }
            // Retrieves the metallic roughness factors from the maximum texture values.
            var metallicRoughnessFactors_1 = {
                baseColor: maxBaseColor,
                metallic: maxMetallic,
                roughness: maxRoughness
            };
            var writeOutMetallicRoughnessTexture = false;
            var writeOutBaseColorTexture = false;
            for (var h = 0; h < height; ++h) {
                for (var w = 0; w < width; ++w) {
                    var destinationOffset = (width * h + w) * strideSize;
                    baseColorBuffer[destinationOffset] /= metallicRoughnessFactors_1.baseColor.r > _GLTFMaterialExporter._Epsilon ? metallicRoughnessFactors_1.baseColor.r : 1;
                    baseColorBuffer[destinationOffset + 1] /= metallicRoughnessFactors_1.baseColor.g > _GLTFMaterialExporter._Epsilon ? metallicRoughnessFactors_1.baseColor.g : 1;
                    baseColorBuffer[destinationOffset + 2] /= metallicRoughnessFactors_1.baseColor.b > _GLTFMaterialExporter._Epsilon ? metallicRoughnessFactors_1.baseColor.b : 1;
                    var linearBaseColorPixel = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].FromInts(baseColorBuffer[destinationOffset], baseColorBuffer[destinationOffset + 1], baseColorBuffer[destinationOffset + 2]);
                    var sRGBBaseColorPixel = linearBaseColorPixel.toGammaSpace();
                    baseColorBuffer[destinationOffset] = sRGBBaseColorPixel.r * 255;
                    baseColorBuffer[destinationOffset + 1] = sRGBBaseColorPixel.g * 255;
                    baseColorBuffer[destinationOffset + 2] = sRGBBaseColorPixel.b * 255;
                    if (!_GLTFMaterialExporter.FuzzyEquals(sRGBBaseColorPixel, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White(), _GLTFMaterialExporter._Epsilon)) {
                        writeOutBaseColorTexture = true;
                    }
                    metallicRoughnessBuffer[destinationOffset + 1] /= metallicRoughnessFactors_1.roughness > _GLTFMaterialExporter._Epsilon ? metallicRoughnessFactors_1.roughness : 1;
                    metallicRoughnessBuffer[destinationOffset + 2] /= metallicRoughnessFactors_1.metallic > _GLTFMaterialExporter._Epsilon ? metallicRoughnessFactors_1.metallic : 1;
                    var metallicRoughnessPixel = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].FromInts(255, metallicRoughnessBuffer[destinationOffset + 1], metallicRoughnessBuffer[destinationOffset + 2]);
                    if (!_GLTFMaterialExporter.FuzzyEquals(metallicRoughnessPixel, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White(), _GLTFMaterialExporter._Epsilon)) {
                        writeOutMetallicRoughnessTexture = true;
                    }
                }
            }
            if (writeOutMetallicRoughnessTexture) {
                var promise = this._createBase64FromCanvasAsync(metallicRoughnessBuffer, width, height, mimeType).then(function (metallicRoughnessBase64) {
                    metallicRoughnessFactors_1.metallicRoughnessTextureBase64 = metallicRoughnessBase64;
                });
                promises.push(promise);
            }
            if (writeOutBaseColorTexture) {
                var promise = this._createBase64FromCanvasAsync(baseColorBuffer, width, height, mimeType).then(function (baseColorBase64) {
                    metallicRoughnessFactors_1.baseColorTextureBase64 = baseColorBase64;
                });
                promises.push(promise);
            }
            return Promise.all(promises).then(function () {
                return metallicRoughnessFactors_1;
            });
        }
        else {
            return Promise.reject("_ConvertSpecularGlossinessTexturesToMetallicRoughness: Scene from textures is missing!");
        }
    };
    /**
     * Converts specular glossiness material properties to metallic roughness
     * @param specularGlossiness interface with specular glossiness material properties
     * @returns interface with metallic roughness material properties
     */
    _GLTFMaterialExporter.prototype._convertSpecularGlossinessToMetallicRoughness = function (specularGlossiness) {
        var diffusePerceivedBrightness = this._getPerceivedBrightness(specularGlossiness.diffuseColor);
        var specularPerceivedBrightness = this._getPerceivedBrightness(specularGlossiness.specularColor);
        var oneMinusSpecularStrength = 1 - this._getMaxComponent(specularGlossiness.specularColor);
        var metallic = _GLTFMaterialExporter._SolveMetallic(diffusePerceivedBrightness, specularPerceivedBrightness, oneMinusSpecularStrength);
        var baseColorFromDiffuse = specularGlossiness.diffuseColor.scale(oneMinusSpecularStrength / (1.0 - _GLTFMaterialExporter._DielectricSpecular.r) / Math.max(1 - metallic, _GLTFMaterialExporter._Epsilon));
        var baseColorFromSpecular = specularGlossiness.specularColor.subtract(_GLTFMaterialExporter._DielectricSpecular.scale(1 - metallic)).scale(1 / Math.max(metallic, _GLTFMaterialExporter._Epsilon));
        var baseColor = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].Lerp(baseColorFromDiffuse, baseColorFromSpecular, metallic * metallic);
        baseColor = baseColor.clampToRef(0, 1, baseColor);
        var metallicRoughness = {
            baseColor: baseColor,
            metallic: metallic,
            roughness: 1 - specularGlossiness.glossiness
        };
        return metallicRoughness;
    };
    /**
     * Calculates the surface reflectance, independent of lighting conditions
     * @param color Color source to calculate brightness from
     * @returns number representing the perceived brightness, or zero if color is undefined
     */
    _GLTFMaterialExporter.prototype._getPerceivedBrightness = function (color) {
        if (color) {
            return Math.sqrt(0.299 * color.r * color.r + 0.587 * color.g * color.g + 0.114 * color.b * color.b);
        }
        return 0;
    };
    /**
     * Returns the maximum color component value
     * @param color
     * @returns maximum color component value, or zero if color is null or undefined
     */
    _GLTFMaterialExporter.prototype._getMaxComponent = function (color) {
        if (color) {
            return Math.max(color.r, Math.max(color.g, color.b));
        }
        return 0;
    };
    /**
     * Convert a PBRMaterial (Metallic/Roughness) to Metallic Roughness factors
     * @param babylonPBRMaterial BJS PBR Metallic Roughness Material
     * @param mimeType mime type to use for the textures
     * @param images array of glTF image interfaces
     * @param textures array of glTF texture interfaces
     * @param glTFPbrMetallicRoughness glTF PBR Metallic Roughness interface
     * @param imageData map of image file name to data
     * @param hasTextureCoords specifies if texture coordinates are present on the submesh to determine if textures should be applied
     * @returns glTF PBR Metallic Roughness factors
     */
    _GLTFMaterialExporter.prototype._convertMetalRoughFactorsToMetallicRoughnessAsync = function (babylonPBRMaterial, mimeType, glTFPbrMetallicRoughness, hasTextureCoords) {
        var promises = [];
        var metallicRoughness = {
            baseColor: babylonPBRMaterial.albedoColor,
            metallic: babylonPBRMaterial.metallic,
            roughness: babylonPBRMaterial.roughness
        };
        if (hasTextureCoords) {
            if (babylonPBRMaterial.albedoTexture) {
                promises.push(this._exportTextureAsync(babylonPBRMaterial.albedoTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFPbrMetallicRoughness.baseColorTexture = glTFTexture;
                    }
                }));
            }
            if (babylonPBRMaterial.metallicTexture) {
                promises.push(this._exportTextureAsync(babylonPBRMaterial.metallicTexture, mimeType).then(function (glTFTexture) {
                    if (glTFTexture) {
                        glTFPbrMetallicRoughness.metallicRoughnessTexture = glTFTexture;
                    }
                }));
            }
        }
        return Promise.all(promises).then(function () {
            return metallicRoughness;
        });
    };
    _GLTFMaterialExporter.prototype._getGLTFTextureSampler = function (texture) {
        var sampler = this._getGLTFTextureWrapModesSampler(texture);
        var samplingMode = texture instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"] ? texture.samplingMode : null;
        if (samplingMode != null) {
            switch (samplingMode) {
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_LINEAR: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9729 /* LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_NEAREST: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9728 /* NEAREST */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_LINEAR: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9729 /* LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_LINEAR_MIPLINEAR: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9987 /* LINEAR_MIPMAP_LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_NEAREST: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9728 /* NEAREST */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_LINEAR_MIPNEAREST: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9985 /* LINEAR_MIPMAP_NEAREST */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_NEAREST_MIPNEAREST: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9984 /* NEAREST_MIPMAP_NEAREST */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_NEAREST_MIPLINEAR: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9986 /* NEAREST_MIPMAP_LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_NEAREST_MIPLINEAR: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9986 /* NEAREST_MIPMAP_LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_LINEAR_MIPLINEAR: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9987 /* LINEAR_MIPMAP_LINEAR */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].LINEAR_LINEAR_MIPNEAREST: {
                    sampler.magFilter = 9729 /* LINEAR */;
                    sampler.minFilter = 9985 /* LINEAR_MIPMAP_NEAREST */;
                    break;
                }
                case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].NEAREST_NEAREST_MIPNEAREST: {
                    sampler.magFilter = 9728 /* NEAREST */;
                    sampler.minFilter = 9984 /* NEAREST_MIPMAP_NEAREST */;
                    break;
                }
            }
        }
        return sampler;
    };
    _GLTFMaterialExporter.prototype._getGLTFTextureWrapMode = function (wrapMode) {
        switch (wrapMode) {
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].WRAP_ADDRESSMODE: {
                return 10497 /* REPEAT */;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].CLAMP_ADDRESSMODE: {
                return 33071 /* CLAMP_TO_EDGE */;
            }
            case babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].MIRROR_ADDRESSMODE: {
                return 33648 /* MIRRORED_REPEAT */;
            }
            default: {
                babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error("Unsupported Texture Wrap Mode " + wrapMode + "!");
                return 10497 /* REPEAT */;
            }
        }
    };
    _GLTFMaterialExporter.prototype._getGLTFTextureWrapModesSampler = function (texture) {
        var wrapS = this._getGLTFTextureWrapMode(texture instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"] ? texture.wrapU : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].WRAP_ADDRESSMODE);
        var wrapT = this._getGLTFTextureWrapMode(texture instanceof babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"] ? texture.wrapV : babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Texture"].WRAP_ADDRESSMODE);
        if (wrapS === 10497 /* REPEAT */ && wrapT === 10497 /* REPEAT */) { // default wrapping mode in glTF, so omitting
            return {};
        }
        return { wrapS: wrapS, wrapT: wrapT };
    };
    /**
     * Convert a PBRMaterial (Specular/Glossiness) to Metallic Roughness factors
     * @param babylonPBRMaterial BJS PBR Metallic Roughness Material
     * @param mimeType mime type to use for the textures
     * @param images array of glTF image interfaces
     * @param textures array of glTF texture interfaces
     * @param glTFPbrMetallicRoughness glTF PBR Metallic Roughness interface
     * @param imageData map of image file name to data
     * @param hasTextureCoords specifies if texture coordinates are present on the submesh to determine if textures should be applied
     * @returns glTF PBR Metallic Roughness factors
     */
    _GLTFMaterialExporter.prototype._convertSpecGlossFactorsToMetallicRoughnessAsync = function (babylonPBRMaterial, mimeType, glTFPbrMetallicRoughness, hasTextureCoords) {
        var _this = this;
        return Promise.resolve().then(function () {
            var samplers = _this._exporter._samplers;
            var textures = _this._exporter._textures;
            var specGloss = {
                diffuseColor: babylonPBRMaterial.albedoColor || babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White(),
                specularColor: babylonPBRMaterial.reflectivityColor || babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White(),
                glossiness: babylonPBRMaterial.microSurface || 1,
            };
            var samplerIndex = null;
            var sampler = _this._getGLTFTextureSampler(babylonPBRMaterial.albedoTexture);
            if (sampler.magFilter != null && sampler.minFilter != null && sampler.wrapS != null && sampler.wrapT != null) {
                samplers.push(sampler);
                samplerIndex = samplers.length - 1;
            }
            if (babylonPBRMaterial.reflectivityTexture && !babylonPBRMaterial.useMicroSurfaceFromReflectivityMapAlpha) {
                return Promise.reject("_ConvertPBRMaterial: Glossiness values not included in the reflectivity texture are currently not supported");
            }
            if ((babylonPBRMaterial.albedoTexture || babylonPBRMaterial.reflectivityTexture) && hasTextureCoords) {
                return _this._convertSpecularGlossinessTexturesToMetallicRoughnessAsync(babylonPBRMaterial.albedoTexture, babylonPBRMaterial.reflectivityTexture, specGloss, mimeType).then(function (metallicRoughnessFactors) {
                    if (metallicRoughnessFactors.baseColorTextureBase64) {
                        var glTFBaseColorTexture = _this._getTextureInfoFromBase64(metallicRoughnessFactors.baseColorTextureBase64, "bjsBaseColorTexture_" + (textures.length) + ".png", mimeType, babylonPBRMaterial.albedoTexture ? babylonPBRMaterial.albedoTexture.coordinatesIndex : null, samplerIndex);
                        if (glTFBaseColorTexture) {
                            glTFPbrMetallicRoughness.baseColorTexture = glTFBaseColorTexture;
                        }
                    }
                    if (metallicRoughnessFactors.metallicRoughnessTextureBase64) {
                        var glTFMRColorTexture = _this._getTextureInfoFromBase64(metallicRoughnessFactors.metallicRoughnessTextureBase64, "bjsMetallicRoughnessTexture_" + (textures.length) + ".png", mimeType, babylonPBRMaterial.reflectivityTexture ? babylonPBRMaterial.reflectivityTexture.coordinatesIndex : null, samplerIndex);
                        if (glTFMRColorTexture) {
                            glTFPbrMetallicRoughness.metallicRoughnessTexture = glTFMRColorTexture;
                        }
                    }
                    return metallicRoughnessFactors;
                });
            }
            else {
                return _this._convertSpecularGlossinessToMetallicRoughness(specGloss);
            }
        });
    };
    /**
     * Converts a Babylon PBR Metallic Roughness Material to a glTF Material
     * @param babylonPBRMaterial BJS PBR Metallic Roughness Material
     * @param mimeType mime type to use for the textures
     * @param images array of glTF image interfaces
     * @param textures array of glTF texture interfaces
     * @param materials array of glTF material interfaces
     * @param imageData map of image file name to data
     * @param hasTextureCoords specifies if texture coordinates are present on the submesh to determine if textures should be applied
     */
    _GLTFMaterialExporter.prototype._convertPBRMaterialAsync = function (babylonPBRMaterial, mimeType, hasTextureCoords) {
        var _this = this;
        var glTFPbrMetallicRoughness = {};
        var glTFMaterial = {
            name: babylonPBRMaterial.name
        };
        var useMetallicRoughness = babylonPBRMaterial.isMetallicWorkflow();
        if (useMetallicRoughness) {
            if (babylonPBRMaterial.albedoColor) {
                glTFPbrMetallicRoughness.baseColorFactor = [
                    babylonPBRMaterial.albedoColor.r,
                    babylonPBRMaterial.albedoColor.g,
                    babylonPBRMaterial.albedoColor.b,
                    babylonPBRMaterial.alpha
                ];
            }
            return this._convertMetalRoughFactorsToMetallicRoughnessAsync(babylonPBRMaterial, mimeType, glTFPbrMetallicRoughness, hasTextureCoords).then(function (metallicRoughness) {
                return _this.setMetallicRoughnessPbrMaterial(metallicRoughness, babylonPBRMaterial, glTFMaterial, glTFPbrMetallicRoughness, mimeType, hasTextureCoords);
            });
        }
        else {
            return this._convertSpecGlossFactorsToMetallicRoughnessAsync(babylonPBRMaterial, mimeType, glTFPbrMetallicRoughness, hasTextureCoords).then(function (metallicRoughness) {
                return _this.setMetallicRoughnessPbrMaterial(metallicRoughness, babylonPBRMaterial, glTFMaterial, glTFPbrMetallicRoughness, mimeType, hasTextureCoords);
            });
        }
    };
    _GLTFMaterialExporter.prototype.setMetallicRoughnessPbrMaterial = function (metallicRoughness, babylonPBRMaterial, glTFMaterial, glTFPbrMetallicRoughness, mimeType, hasTextureCoords) {
        var materialMap = this._exporter._materialMap;
        var materials = this._exporter._materials;
        var promises = [];
        if (metallicRoughness) {
            _GLTFMaterialExporter._SetAlphaMode(glTFMaterial, babylonPBRMaterial);
            if (!(_GLTFMaterialExporter.FuzzyEquals(metallicRoughness.baseColor, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].White(), _GLTFMaterialExporter._Epsilon) && babylonPBRMaterial.alpha >= _GLTFMaterialExporter._Epsilon)) {
                glTFPbrMetallicRoughness.baseColorFactor = [
                    metallicRoughness.baseColor.r,
                    metallicRoughness.baseColor.g,
                    metallicRoughness.baseColor.b,
                    babylonPBRMaterial.alpha
                ];
            }
            if (metallicRoughness.metallic != null && metallicRoughness.metallic !== 1) {
                glTFPbrMetallicRoughness.metallicFactor = metallicRoughness.metallic;
            }
            if (metallicRoughness.roughness != null && metallicRoughness.roughness !== 1) {
                glTFPbrMetallicRoughness.roughnessFactor = metallicRoughness.roughness;
            }
            if (babylonPBRMaterial.backFaceCulling != null && !babylonPBRMaterial.backFaceCulling) {
                if (!babylonPBRMaterial.twoSidedLighting) {
                    babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn(babylonPBRMaterial.name + ": Back-face culling enabled and two-sided lighting disabled is not supported in glTF.");
                }
                glTFMaterial.doubleSided = true;
            }
            if (hasTextureCoords) {
                if (babylonPBRMaterial.bumpTexture) {
                    var promise = this._exportTextureAsync(babylonPBRMaterial.bumpTexture, mimeType).then(function (glTFTexture) {
                        if (glTFTexture) {
                            glTFMaterial.normalTexture = glTFTexture;
                            if (babylonPBRMaterial.bumpTexture.level !== 1) {
                                glTFMaterial.normalTexture.scale = babylonPBRMaterial.bumpTexture.level;
                            }
                        }
                    });
                    promises.push(promise);
                }
                if (babylonPBRMaterial.ambientTexture) {
                    var promise = this._exportTextureAsync(babylonPBRMaterial.ambientTexture, mimeType).then(function (glTFTexture) {
                        if (glTFTexture) {
                            var occlusionTexture = {
                                index: glTFTexture.index,
                                texCoord: glTFTexture.texCoord
                            };
                            glTFMaterial.occlusionTexture = occlusionTexture;
                            if (babylonPBRMaterial.ambientTextureStrength) {
                                occlusionTexture.strength = babylonPBRMaterial.ambientTextureStrength;
                            }
                        }
                    });
                    promises.push(promise);
                }
                if (babylonPBRMaterial.emissiveTexture) {
                    var promise = this._exportTextureAsync(babylonPBRMaterial.emissiveTexture, mimeType).then(function (glTFTexture) {
                        if (glTFTexture) {
                            glTFMaterial.emissiveTexture = glTFTexture;
                        }
                    });
                    promises.push(promise);
                }
            }
            if (!_GLTFMaterialExporter.FuzzyEquals(babylonPBRMaterial.emissiveColor, babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"].Black(), _GLTFMaterialExporter._Epsilon)) {
                glTFMaterial.emissiveFactor = babylonPBRMaterial.emissiveColor.asArray();
            }
            glTFMaterial.pbrMetallicRoughness = glTFPbrMetallicRoughness;
            materials.push(glTFMaterial);
            materialMap[babylonPBRMaterial.uniqueId] = materials.length - 1;
        }
        return this._finishMaterial(promises, glTFMaterial, babylonPBRMaterial, mimeType);
    };
    _GLTFMaterialExporter.prototype.getPixelsFromTexture = function (babylonTexture) {
        var pixels = babylonTexture.textureType === babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Constants"].TEXTURETYPE_UNSIGNED_INT ? babylonTexture.readPixels() : babylonTexture.readPixels();
        return pixels;
    };
    /**
     * Extracts a texture from a Babylon texture into file data and glTF data
     * @param babylonTexture Babylon texture to extract
     * @param mimeType Mime Type of the babylonTexture
     * @return glTF texture info, or null if the texture format is not supported
     */
    _GLTFMaterialExporter.prototype._exportTextureAsync = function (babylonTexture, mimeType) {
        var _this = this;
        var extensionPromise = this._exporter._extensionsPreExportTextureAsync("exporter", babylonTexture, mimeType);
        if (!extensionPromise) {
            return this._exportTextureInfoAsync(babylonTexture, mimeType);
        }
        return extensionPromise.then(function (texture) {
            if (!texture) {
                return _this._exportTextureInfoAsync(babylonTexture, mimeType);
            }
            return _this._exportTextureInfoAsync(texture, mimeType);
        });
    };
    _GLTFMaterialExporter.prototype._exportTextureInfoAsync = function (babylonTexture, mimeType) {
        var _this = this;
        return Promise.resolve().then(function () {
            var textureUid = babylonTexture.uid;
            if (textureUid in _this._textureMap) {
                return _this._textureMap[textureUid];
            }
            else {
                var pixels = _this.getPixelsFromTexture(babylonTexture);
                if (!pixels) {
                    return null;
                }
                var samplers = _this._exporter._samplers;
                var sampler = _this._getGLTFTextureSampler(babylonTexture);
                var samplerIndex_1 = null;
                //  if a pre-existing sampler with identical parameters exists, then reuse the previous sampler
                var foundSamplerIndex = null;
                for (var i = 0; i < samplers.length; ++i) {
                    var s = samplers[i];
                    if (s.minFilter === sampler.minFilter && s.magFilter === sampler.magFilter &&
                        s.wrapS === sampler.wrapS && s.wrapT === sampler.wrapT) {
                        foundSamplerIndex = i;
                        break;
                    }
                }
                if (foundSamplerIndex == null) {
                    samplers.push(sampler);
                    samplerIndex_1 = samplers.length - 1;
                }
                else {
                    samplerIndex_1 = foundSamplerIndex;
                }
                var size = babylonTexture.getSize();
                // Preserve texture mime type if defined
                if (babylonTexture.mimeType) {
                    switch (babylonTexture.mimeType) {
                        case "image/jpeg":
                            mimeType = "image/jpeg" /* JPEG */;
                            break;
                        case "image/png":
                            mimeType = "image/png" /* PNG */;
                            break;
                    }
                }
                return _this._createBase64FromCanvasAsync(pixels, size.width, size.height, mimeType).then(function (base64Data) {
                    var textureInfo = _this._getTextureInfoFromBase64(base64Data, babylonTexture.name.replace(/\.\/|\/|\.\\|\\/g, "_"), mimeType, babylonTexture.coordinatesIndex, samplerIndex_1);
                    if (textureInfo) {
                        _this._textureMap[textureUid] = textureInfo;
                        _this._exporter._extensionsPostExportTextures("linkTextureInfo", textureInfo, babylonTexture);
                    }
                    return textureInfo;
                });
            }
        });
    };
    /**
     * Builds a texture from base64 string
     * @param base64Texture base64 texture string
     * @param baseTextureName Name to use for the texture
     * @param mimeType image mime type for the texture
     * @param images array of images
     * @param textures array of textures
     * @param imageData map of image data
     * @returns glTF texture info, or null if the texture format is not supported
     */
    _GLTFMaterialExporter.prototype._getTextureInfoFromBase64 = function (base64Texture, baseTextureName, mimeType, texCoordIndex, samplerIndex) {
        var textures = this._exporter._textures;
        var images = this._exporter._images;
        var imageData = this._exporter._imageData;
        var textureInfo = null;
        var glTFTexture = {
            source: images.length,
            name: baseTextureName
        };
        if (samplerIndex != null) {
            glTFTexture.sampler = samplerIndex;
        }
        var binStr = atob(base64Texture.split(',')[1]);
        var arrBuff = new ArrayBuffer(binStr.length);
        var arr = new Uint8Array(arrBuff);
        for (var i = 0, length_2 = binStr.length; i < length_2; ++i) {
            arr[i] = binStr.charCodeAt(i);
        }
        var imageValues = { data: arr, mimeType: mimeType };
        var extension = mimeType === "image/jpeg" /* JPEG */ ? '.jpeg' : '.png';
        var textureName = baseTextureName + extension;
        var originalTextureName = textureName;
        if (textureName in imageData) {
            textureName = baseTextureName + "_" + babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].RandomId() + extension;
        }
        imageData[textureName] = imageValues;
        if (mimeType === "image/jpeg" /* JPEG */ || mimeType === "image/png" /* PNG */) {
            var glTFImage = {
                name: baseTextureName,
                uri: textureName
            };
            var foundIndex = null;
            for (var i = 0; i < images.length; ++i) {
                if (images[i].uri === originalTextureName) {
                    foundIndex = i;
                    break;
                }
            }
            if (foundIndex == null) {
                images.push(glTFImage);
                glTFTexture.source = images.length - 1;
            }
            else {
                glTFTexture.source = foundIndex;
            }
            textures.push(glTFTexture);
            textureInfo = {
                index: textures.length - 1
            };
            if (texCoordIndex != null) {
                textureInfo.texCoord = texCoordIndex;
            }
        }
        else {
            babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Tools"].Error("Unsupported texture mime type " + mimeType);
        }
        return textureInfo;
    };
    /**
     * Represents the dielectric specular values for R, G and B
     */
    _GLTFMaterialExporter._DielectricSpecular = new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Color3"](0.04, 0.04, 0.04);
    /**
     * Allows the maximum specular power to be defined for material calculations
     */
    _GLTFMaterialExporter._MaxSpecularPower = 1024;
    /**
     * Numeric tolerance value
     */
    _GLTFMaterialExporter._Epsilon = 1e-6;
    return _GLTFMaterialExporter;
}());



/***/ }),

/***/ "./glTF/2.0/glTFSerializer.ts":
/*!************************************!*\
  !*** ./glTF/2.0/glTFSerializer.ts ***!
  \************************************/
/*! exports provided: GLTF2Export */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTF2Export", function() { return GLTF2Export; });
/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFExporter */ "./glTF/2.0/glTFExporter.ts");

/**
 * Class for generating glTF data from a Babylon scene.
 */
var GLTF2Export = /** @class */ (function () {
    function GLTF2Export() {
    }
    /**
     * Exports the geometry of the scene to .gltf file format asynchronously
     * @param scene Babylon scene with scene hierarchy information
     * @param filePrefix File prefix to use when generating the glTF file
     * @param options Exporter options
     * @returns Returns an object with a .gltf file and associates texture names
     * as keys and their data and paths as values
     */
    GLTF2Export.GLTFAsync = function (scene, filePrefix, options) {
        return scene.whenReadyAsync().then(function () {
            var glTFPrefix = filePrefix.replace(/\.[^/.]+$/, "");
            var gltfGenerator = new _glTFExporter__WEBPACK_IMPORTED_MODULE_0__["_Exporter"](scene, options);
            return gltfGenerator._generateGLTFAsync(glTFPrefix);
        });
    };
    GLTF2Export._PreExportAsync = function (scene, options) {
        return Promise.resolve().then(function () {
            if (options && options.exportWithoutWaitingForScene) {
                return Promise.resolve();
            }
            else {
                return scene.whenReadyAsync();
            }
        });
    };
    GLTF2Export._PostExportAsync = function (scene, glTFData, options) {
        return Promise.resolve().then(function () {
            if (options && options.exportWithoutWaitingForScene) {
                return glTFData;
            }
            else {
                return glTFData;
            }
        });
    };
    /**
     * Exports the geometry of the scene to .glb file format asychronously
     * @param scene Babylon scene with scene hierarchy information
     * @param filePrefix File prefix to use when generating glb file
     * @param options Exporter options
     * @returns Returns an object with a .glb filename as key and data as value
     */
    GLTF2Export.GLBAsync = function (scene, filePrefix, options) {
        var _this = this;
        return this._PreExportAsync(scene, options).then(function () {
            var glTFPrefix = filePrefix.replace(/\.[^/.]+$/, "");
            var gltfGenerator = new _glTFExporter__WEBPACK_IMPORTED_MODULE_0__["_Exporter"](scene, options);
            return gltfGenerator._generateGLBAsync(glTFPrefix).then(function (glTFData) {
                return _this._PostExportAsync(scene, glTFData, options);
            });
        });
    };
    return GLTF2Export;
}());



/***/ }),

/***/ "./glTF/2.0/glTFUtilities.ts":
/*!***********************************!*\
  !*** ./glTF/2.0/glTFUtilities.ts ***!
  \***********************************/
/*! exports provided: _GLTFUtilities */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_GLTFUtilities", function() { return _GLTFUtilities; });
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.vector */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__);

/**
 * @hidden
 */
var _GLTFUtilities = /** @class */ (function () {
    function _GLTFUtilities() {
    }
    /**
     * Creates a buffer view based on the supplied arguments
     * @param bufferIndex index value of the specified buffer
     * @param byteOffset byte offset value
     * @param byteLength byte length of the bufferView
     * @param byteStride byte distance between conequential elements
     * @param name name of the buffer view
     * @returns bufferView for glTF
     */
    _GLTFUtilities._CreateBufferView = function (bufferIndex, byteOffset, byteLength, byteStride, name) {
        var bufferview = { buffer: bufferIndex, byteLength: byteLength };
        if (byteOffset) {
            bufferview.byteOffset = byteOffset;
        }
        if (name) {
            bufferview.name = name;
        }
        if (byteStride) {
            bufferview.byteStride = byteStride;
        }
        return bufferview;
    };
    /**
     * Creates an accessor based on the supplied arguments
     * @param bufferviewIndex The index of the bufferview referenced by this accessor
     * @param name The name of the accessor
     * @param type The type of the accessor
     * @param componentType The datatype of components in the attribute
     * @param count The number of attributes referenced by this accessor
     * @param byteOffset The offset relative to the start of the bufferView in bytes
     * @param min Minimum value of each component in this attribute
     * @param max Maximum value of each component in this attribute
     * @returns accessor for glTF
     */
    _GLTFUtilities._CreateAccessor = function (bufferviewIndex, name, type, componentType, count, byteOffset, min, max) {
        var accessor = { name: name, bufferView: bufferviewIndex, componentType: componentType, count: count, type: type };
        if (min != null) {
            accessor.min = min;
        }
        if (max != null) {
            accessor.max = max;
        }
        if (byteOffset != null) {
            accessor.byteOffset = byteOffset;
        }
        return accessor;
    };
    /**
     * Calculates the minimum and maximum values of an array of position floats
     * @param positions Positions array of a mesh
     * @param vertexStart Starting vertex offset to calculate min and max values
     * @param vertexCount Number of vertices to check for min and max values
     * @returns min number array and max number array
     */
    _GLTFUtilities._CalculateMinMaxPositions = function (positions, vertexStart, vertexCount, convertToRightHandedSystem) {
        var min = [Infinity, Infinity, Infinity];
        var max = [-Infinity, -Infinity, -Infinity];
        var positionStrideSize = 3;
        var indexOffset;
        var position;
        var vector;
        if (vertexCount) {
            for (var i = vertexStart, length_1 = vertexStart + vertexCount; i < length_1; ++i) {
                indexOffset = positionStrideSize * i;
                position = babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"].FromArray(positions, indexOffset);
                if (convertToRightHandedSystem) {
                    _GLTFUtilities._GetRightHandedPositionVector3FromRef(position);
                }
                vector = position.asArray();
                for (var j = 0; j < positionStrideSize; ++j) {
                    var num = vector[j];
                    if (num < min[j]) {
                        min[j] = num;
                    }
                    if (num > max[j]) {
                        max[j] = num;
                    }
                    ++indexOffset;
                }
            }
        }
        return { min: min, max: max };
    };
    /**
     * Converts a new right-handed Vector3
     * @param vector vector3 array
     * @returns right-handed Vector3
     */
    _GLTFUtilities._GetRightHandedPositionVector3 = function (vector) {
        return new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](vector.x, vector.y, -vector.z);
    };
    /**
     * Converts a Vector3 to right-handed
     * @param vector Vector3 to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedPositionVector3FromRef = function (vector) {
        vector.z *= -1;
    };
    /**
     * Converts a three element number array to right-handed
     * @param vector number array to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedPositionArray3FromRef = function (vector) {
        vector[2] *= -1;
    };
    /**
     * Converts a new right-handed Vector3
     * @param vector vector3 array
     * @returns right-handed Vector3
     */
    _GLTFUtilities._GetRightHandedNormalVector3 = function (vector) {
        return new babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Vector3"](vector.x, vector.y, -vector.z);
    };
    /**
     * Converts a Vector3 to right-handed
     * @param vector Vector3 to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedNormalVector3FromRef = function (vector) {
        vector.z *= -1;
    };
    /**
     * Converts a three element number array to right-handed
     * @param vector number array to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedNormalArray3FromRef = function (vector) {
        vector[2] *= -1;
    };
    /**
     * Converts a Vector4 to right-handed
     * @param vector Vector4 to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedVector4FromRef = function (vector) {
        vector.z *= -1;
        vector.w *= -1;
    };
    /**
     * Converts a Vector4 to right-handed
     * @param vector Vector4 to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedArray4FromRef = function (vector) {
        vector[2] *= -1;
        vector[3] *= -1;
    };
    /**
     * Converts a Quaternion to right-handed
     * @param quaternion Source quaternion to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedQuaternionFromRef = function (quaternion) {
        quaternion.x *= -1;
        quaternion.y *= -1;
    };
    /**
     * Converts a Quaternion to right-handed
     * @param quaternion Source quaternion to convert to right-handed
     */
    _GLTFUtilities._GetRightHandedQuaternionArrayFromRef = function (quaternion) {
        quaternion[0] *= -1;
        quaternion[1] *= -1;
    };
    _GLTFUtilities._NormalizeTangentFromRef = function (tangent) {
        var length = Math.sqrt(tangent.x * tangent.x + tangent.y * tangent.y + tangent.z * tangent.z);
        if (length > 0) {
            tangent.x /= length;
            tangent.y /= length;
            tangent.z /= length;
        }
    };
    _GLTFUtilities._GetRightHandedMatrixFromRef = function (matrix) {
        var m = matrix.m;
        babylonjs_Maths_math_vector__WEBPACK_IMPORTED_MODULE_0__["Matrix"].FromValuesToRef(m[0], m[1], -m[2], m[3], m[4], m[5], -m[6], m[7], -m[8], m[9], m[10], m[11], m[12], m[13], m[14], m[15], matrix);
    };
    _GLTFUtilities._GetDataAccessorElementCount = function (accessorType) {
        switch (accessorType) {
            case "MAT2" /* MAT2 */:
                return 4;
            case "MAT3" /* MAT3 */:
                return 9;
            case "MAT4" /* MAT4 */:
                return 16;
            case "SCALAR" /* SCALAR */:
                return 1;
            case "VEC2" /* VEC2 */:
                return 2;
            case "VEC3" /* VEC3 */:
                return 3;
            case "VEC4" /* VEC4 */:
                return 4;
        }
    };
    return _GLTFUtilities;
}());



/***/ }),

/***/ "./glTF/2.0/index.ts":
/*!***************************!*\
  !*** ./glTF/2.0/index.ts ***!
  \***************************/
/*! exports provided: _GLTFAnimation, GLTFData, _Exporter, _BinaryWriter, __IGLTFExporterExtensionV2, _GLTFMaterialExporter, GLTF2Export, _GLTFUtilities, KHR_texture_transform, KHR_lights_punctual, KHR_materials_sheen, KHR_materials_unlit */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _glTFAnimation__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFAnimation */ "./glTF/2.0/glTFAnimation.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFAnimation", function() { return _glTFAnimation__WEBPACK_IMPORTED_MODULE_0__["_GLTFAnimation"]; });

/* harmony import */ var _glTFData__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFData */ "./glTF/2.0/glTFData.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFData", function() { return _glTFData__WEBPACK_IMPORTED_MODULE_1__["GLTFData"]; });

/* harmony import */ var _glTFExporter__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./glTFExporter */ "./glTF/2.0/glTFExporter.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_Exporter", function() { return _glTFExporter__WEBPACK_IMPORTED_MODULE_2__["_Exporter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_BinaryWriter", function() { return _glTFExporter__WEBPACK_IMPORTED_MODULE_2__["_BinaryWriter"]; });

/* harmony import */ var _glTFExporterExtension__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./glTFExporterExtension */ "./glTF/2.0/glTFExporterExtension.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "__IGLTFExporterExtensionV2", function() { return _glTFExporterExtension__WEBPACK_IMPORTED_MODULE_3__["__IGLTFExporterExtensionV2"]; });

/* harmony import */ var _glTFMaterialExporter__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./glTFMaterialExporter */ "./glTF/2.0/glTFMaterialExporter.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFMaterialExporter", function() { return _glTFMaterialExporter__WEBPACK_IMPORTED_MODULE_4__["_GLTFMaterialExporter"]; });

/* harmony import */ var _glTFSerializer__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./glTFSerializer */ "./glTF/2.0/glTFSerializer.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF2Export", function() { return _glTFSerializer__WEBPACK_IMPORTED_MODULE_5__["GLTF2Export"]; });

/* harmony import */ var _glTFUtilities__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ./glTFUtilities */ "./glTF/2.0/glTFUtilities.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFUtilities", function() { return _glTFUtilities__WEBPACK_IMPORTED_MODULE_6__["_GLTFUtilities"]; });

/* harmony import */ var _Extensions__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! ./Extensions */ "./glTF/2.0/Extensions/index.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_7__["KHR_texture_transform"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_lights_punctual", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_7__["KHR_lights_punctual"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_7__["KHR_materials_sheen"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_7__["KHR_materials_unlit"]; });











/***/ }),

/***/ "./glTF/2.0/shaders/textureTransform.fragment.ts":
/*!*******************************************************!*\
  !*** ./glTF/2.0/shaders/textureTransform.fragment.ts ***!
  \*******************************************************/
/*! exports provided: textureTransformPixelShader */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "textureTransformPixelShader", function() { return textureTransformPixelShader; });
/* harmony import */ var babylonjs_Materials_effect__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/effect */ "babylonjs/Misc/tools");
/* harmony import */ var babylonjs_Materials_effect__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_effect__WEBPACK_IMPORTED_MODULE_0__);

var name = 'textureTransformPixelShader';
var shader = "precision highp float;\nvarying vec2 vUV;\nuniform sampler2D textureSampler;\nuniform mat4 textureTransformMat;\nvoid main(void) {\nvec2 uvTransformed=(textureTransformMat*vec4(vUV.xy,1,1)).xy;\ngl_FragColor=texture2D(textureSampler,uvTransformed);\n}";
babylonjs_Materials_effect__WEBPACK_IMPORTED_MODULE_0__["Effect"].ShadersStore[name] = shader;
/** @hidden */
var textureTransformPixelShader = { name: name, shader: shader };


/***/ }),

/***/ "./glTF/glTFFileExporter.ts":
/*!**********************************!*\
  !*** ./glTF/glTFFileExporter.ts ***!
  \**********************************/
/*! exports provided: __IGLTFExporterExtension */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "__IGLTFExporterExtension", function() { return __IGLTFExporterExtension; });
/** @hidden */
var __IGLTFExporterExtension = 0; // I am here to allow dts to be created


/***/ }),

/***/ "./legacy/legacy-glTF2Serializer.ts":
/*!******************************************!*\
  !*** ./legacy/legacy-glTF2Serializer.ts ***!
  \******************************************/
/*! exports provided: __IGLTFExporterExtension, _GLTFAnimation, GLTFData, _Exporter, _BinaryWriter, __IGLTFExporterExtensionV2, _GLTFMaterialExporter, GLTF2Export, _GLTFUtilities, KHR_texture_transform, KHR_lights_punctual, KHR_materials_sheen, KHR_materials_unlit */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* WEBPACK VAR INJECTION */(function(global) {/* harmony import */ var _glTF_glTFFileExporter__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTF/glTFFileExporter */ "./glTF/glTFFileExporter.ts");
/* harmony import */ var _glTF_2_0_glTFData__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTF/2.0/glTFData */ "./glTF/2.0/glTFData.ts");
/* harmony import */ var _glTF_2_0_glTFSerializer__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../glTF/2.0/glTFSerializer */ "./glTF/2.0/glTFSerializer.ts");
/* harmony import */ var _glTF_2_0_Extensions__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../glTF/2.0/Extensions */ "./glTF/2.0/Extensions/index.ts");
/* harmony import */ var _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ../glTF/2.0 */ "./glTF/2.0/index.ts");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "__IGLTFExporterExtension", function() { return _glTF_glTFFileExporter__WEBPACK_IMPORTED_MODULE_0__["__IGLTFExporterExtension"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFAnimation", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["_GLTFAnimation"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFData", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["GLTFData"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_Exporter", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["_Exporter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_BinaryWriter", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["_BinaryWriter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "__IGLTFExporterExtensionV2", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["__IGLTFExporterExtensionV2"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFMaterialExporter", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["_GLTFMaterialExporter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF2Export", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["GLTF2Export"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "_GLTFUtilities", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["_GLTFUtilities"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["KHR_texture_transform"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_lights_punctual", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["KHR_lights_punctual"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["KHR_materials_sheen"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__["KHR_materials_unlit"]; });






/**
 * This is the entry point for the UMD module.
 * The entry point for a future ESM package should be index.ts
 */
var globalObject = (typeof global !== 'undefined') ? global : ((typeof window !== 'undefined') ? window : undefined);
if (typeof globalObject !== "undefined") {
    globalObject.BABYLON = globalObject.BABYLON || {};
    var BABYLON = globalObject.BABYLON;
    BABYLON.GLTF2 = BABYLON.GLTF2 || {};
    BABYLON.GLTF2.Exporter = BABYLON.GLTF2.Exporter || {};
    BABYLON.GLTF2.Exporter.Extensions = BABYLON.GLTF2.Exporter.Extensions || {};
    var keys = [];
    for (var key in _glTF_glTFFileExporter__WEBPACK_IMPORTED_MODULE_0__) {
        BABYLON[key] = _glTF_glTFFileExporter__WEBPACK_IMPORTED_MODULE_0__[key];
        keys.push(key);
    }
    for (var key in _glTF_2_0_glTFData__WEBPACK_IMPORTED_MODULE_1__) {
        BABYLON[key] = _glTF_2_0_glTFData__WEBPACK_IMPORTED_MODULE_1__[key];
        keys.push(key);
    }
    for (var key in _glTF_2_0_glTFSerializer__WEBPACK_IMPORTED_MODULE_2__) {
        BABYLON[key] = _glTF_2_0_glTFSerializer__WEBPACK_IMPORTED_MODULE_2__[key];
        keys.push(key);
    }
    for (var key in _glTF_2_0_Extensions__WEBPACK_IMPORTED_MODULE_3__) {
        BABYLON.GLTF2.Exporter.Extensions[key] = _glTF_2_0_Extensions__WEBPACK_IMPORTED_MODULE_3__[key];
        keys.push(key);
    }
    for (var key in _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__) {
        // Prevent Reassignment.
        if (keys.indexOf(key) > -1) {
            continue;
        }
        BABYLON.GLTF2.Exporter[key] = _glTF_2_0__WEBPACK_IMPORTED_MODULE_4__[key];
    }
}



/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../node_modules/webpack/buildin/global.js */ "../../node_modules/webpack/buildin/global.js")))

/***/ }),

/***/ "babylonjs/Misc/tools":
/*!****************************************************************************************************!*\
  !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
  \****************************************************************************************************/
/*! no static exports found */
/***/ (function(module, exports) {

module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;

/***/ })

/******/ });
});
//# sourceMappingURL=babylon.glTF2Serializer.js.map