var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
var BABYLON;
(function (BABYLON) {
    var DirectionalLight = (function (_super) {
        __extends(DirectionalLight, _super);
        function DirectionalLight(name, direction, scene) {
            _super.call(this, name, scene);
            this.direction = direction;
            this.shadowOrthoScale = 0.5;
            this.position = direction.scale(-1);
        }
        DirectionalLight.prototype.getAbsolutePosition = function () {
            return this.transformedPosition ? this.transformedPosition : this.position;
        };
        DirectionalLight.prototype.setDirectionToTarget = function (target) {
            this.direction = BABYLON.Vector3.Normalize(target.subtract(this.position));
            return this.direction;
        };
        DirectionalLight.prototype.setShadowProjectionMatrix = function (matrix, viewMatrix, renderList) {
            var orthoLeft = Number.MAX_VALUE;
            var orthoRight = Number.MIN_VALUE;
            var orthoTop = Number.MIN_VALUE;
            var orthoBottom = Number.MAX_VALUE;
            var tempVector3 = BABYLON.Vector3.Zero();
            var activeCamera = this.getScene().activeCamera;
            // Check extends
            for (var meshIndex = 0; meshIndex < renderList.length; meshIndex++) {
                var mesh = renderList[meshIndex];
                if (!mesh) {
                    continue;
                }
                var boundingInfo = mesh.getBoundingInfo();
                if (!boundingInfo) {
                    continue;
                }
                var boundingBox = boundingInfo.boundingBox;
                for (var index = 0; index < boundingBox.vectorsWorld.length; index++) {
                    BABYLON.Vector3.TransformCoordinatesToRef(boundingBox.vectorsWorld[index], viewMatrix, tempVector3);
                    if (tempVector3.x < orthoLeft)
                        orthoLeft = tempVector3.x;
                    if (tempVector3.y < orthoBottom)
                        orthoBottom = tempVector3.y;
                    if (tempVector3.x > orthoRight)
                        orthoRight = tempVector3.x;
                    if (tempVector3.y > orthoTop)
                        orthoTop = tempVector3.y;
                }
            }
            var xOffset = orthoRight - orthoLeft;
            var yOffset = orthoTop - orthoBottom;
            BABYLON.Matrix.OrthoOffCenterLHToRef(orthoLeft - xOffset * this.shadowOrthoScale, orthoRight + xOffset * this.shadowOrthoScale, orthoBottom - yOffset * this.shadowOrthoScale, orthoTop + yOffset * this.shadowOrthoScale, -activeCamera.maxZ, activeCamera.maxZ, matrix);
        };
        DirectionalLight.prototype.supportsVSM = function () {
            return true;
        };
        DirectionalLight.prototype.needRefreshPerFrame = function () {
            return true;
        };
        DirectionalLight.prototype.computeTransformedPosition = function () {
            if (this.parent && this.parent.getWorldMatrix) {
                if (!this.transformedPosition) {
                    this.transformedPosition = BABYLON.Vector3.Zero();
                }
                BABYLON.Vector3.TransformCoordinatesToRef(this.position, this.parent.getWorldMatrix(), this.transformedPosition);
                return true;
            }
            return false;
        };
        DirectionalLight.prototype.transferToEffect = function (effect, directionUniformName) {
            if (this.parent && this.parent.getWorldMatrix) {
                if (!this._transformedDirection) {
                    this._transformedDirection = BABYLON.Vector3.Zero();
                }
                BABYLON.Vector3.TransformNormalToRef(this.direction, this.parent.getWorldMatrix(), this._transformedDirection);
                effect.setFloat4(directionUniformName, this._transformedDirection.x, this._transformedDirection.y, this._transformedDirection.z, 1);
                return;
            }
            effect.setFloat4(directionUniformName, this.direction.x, this.direction.y, this.direction.z, 1);
        };
        DirectionalLight.prototype._getWorldMatrix = function () {
            if (!this._worldMatrix) {
                this._worldMatrix = BABYLON.Matrix.Identity();
            }
            BABYLON.Matrix.TranslationToRef(this.position.x, this.position.y, this.position.z, this._worldMatrix);
            return this._worldMatrix;
        };
        return DirectionalLight;
    })(BABYLON.Light);
    BABYLON.DirectionalLight = DirectionalLight;
})(BABYLON || (BABYLON = {}));
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