mesh.toLeftHanded()

dist/preview release/babylon.d.ts

@@ -3923,108 +3923,6 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
-    class BoundingBox {
-        minimum: Vector3;
-        maximum: Vector3;
-        vectors: Vector3[];
-        center: Vector3;
-        extendSize: Vector3;
-        directions: Vector3[];
-        vectorsWorld: Vector3[];
-        minimumWorld: Vector3;
-        maximumWorld: Vector3;
-        private _worldMatrix;
-        constructor(minimum: Vector3, maximum: Vector3);
-        getWorldMatrix(): Matrix;
-        setWorldMatrix(matrix: Matrix): BoundingBox;
-        _update(world: Matrix): void;
-        isInFrustum(frustumPlanes: Plane[]): boolean;
-        isCompletelyInFrustum(frustumPlanes: Plane[]): boolean;
-        intersectsPoint(point: Vector3): boolean;
-        intersectsSphere(sphere: BoundingSphere): boolean;
-        intersectsMinMax(min: Vector3, max: Vector3): boolean;
-        static Intersects(box0: BoundingBox, box1: BoundingBox): boolean;
-        static IntersectsSphere(minPoint: Vector3, maxPoint: Vector3, sphereCenter: Vector3, sphereRadius: number): boolean;
-        static IsCompletelyInFrustum(boundingVectors: Vector3[], frustumPlanes: Plane[]): boolean;
-        static IsInFrustum(boundingVectors: Vector3[], frustumPlanes: Plane[]): boolean;
-    }
-}
-
-declare module BABYLON {
-    class BoundingInfo {
-        minimum: Vector3;
-        maximum: Vector3;
-        boundingBox: BoundingBox;
-        boundingSphere: BoundingSphere;
-        private _isLocked;
-        constructor(minimum: Vector3, maximum: Vector3);
-        isLocked: boolean;
-        update(world: Matrix): void;
-        isInFrustum(frustumPlanes: Plane[]): boolean;
-        isCompletelyInFrustum(frustumPlanes: Plane[]): boolean;
-        _checkCollision(collider: Collider): boolean;
-        intersectsPoint(point: Vector3): boolean;
-        intersects(boundingInfo: BoundingInfo, precise: boolean): boolean;
-    }
-}
-
-declare module BABYLON {
-    class BoundingSphere {
-        minimum: Vector3;
-        maximum: Vector3;
-        center: Vector3;
-        radius: number;
-        centerWorld: Vector3;
-        radiusWorld: number;
-        private _tempRadiusVector;
-        constructor(minimum: Vector3, maximum: Vector3);
-        _update(world: Matrix): void;
-        isInFrustum(frustumPlanes: Plane[]): boolean;
-        intersectsPoint(point: Vector3): boolean;
-        static Intersects(sphere0: BoundingSphere, sphere1: BoundingSphere): boolean;
-    }
-}
-
-declare module BABYLON {
-    class Ray {
-        origin: Vector3;
-        direction: Vector3;
-        length: number;
-        private _edge1;
-        private _edge2;
-        private _pvec;
-        private _tvec;
-        private _qvec;
-        constructor(origin: Vector3, direction: Vector3, length?: number);
-        intersectsBoxMinMax(minimum: Vector3, maximum: Vector3): boolean;
-        intersectsBox(box: BoundingBox): boolean;
-        intersectsSphere(sphere: BoundingSphere): boolean;
-        intersectsTriangle(vertex0: Vector3, vertex1: Vector3, vertex2: Vector3): IntersectionInfo;
-        intersectsPlane(plane: Plane): number;
-        private static smallnum;
-        private static rayl;
-        /**
-         * Intersection test between the ray and a given segment whithin a given tolerance (threshold)
-         * @param sega the first point of the segment to test the intersection against
-         * @param segb the second point of the segment to test the intersection against
-         * @param threshold the tolerance margin, if the ray doesn't intersect the segment but is close to the given threshold, the intersection is successful
-         * @return the distance from the ray origin to the intersection point if there's intersection, or -1 if there's no intersection
-         */
-        intersectionSegment(sega: Vector3, segb: Vector3, threshold: number): number;
-        static CreateNew(x: number, y: number, viewportWidth: number, viewportHeight: number, world: Matrix, view: Matrix, projection: Matrix): Ray;
-        /**
-        * Function will create a new transformed ray starting from origin and ending at the end point. Ray's length will be set, and ray will be
-        * transformed to the given world matrix.
-        * @param origin The origin point
-        * @param end The end point
-        * @param world a matrix to transform the ray to. Default is the identity matrix.
-        */
-        static CreateNewFromTo(origin: Vector3, end: Vector3, world?: Matrix): Ray;
-        static Transform(ray: Ray, matrix: Matrix): Ray;
-    }
-}
-
-declare module BABYLON {
     class Collider {
         radius: Vector3;
         retry: number;
@@ -4266,46 +4164,104 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
-    class Layer {
-        name: string;
-        texture: Texture;
-        isBackground: boolean;
-        color: Color4;
-        scale: Vector2;
-        offset: Vector2;
-        alphaBlendingMode: number;
-        alphaTest: boolean;
-        private _scene;
-        private _vertexDeclaration;
-        private _vertexStrideSize;
-        private _vertexBuffer;
-        private _indexBuffer;
-        private _effect;
-        private _alphaTestEffect;
-        /**
-        * An event triggered when the layer is disposed.
-        * @type {BABYLON.Observable}
-        */
-        onDisposeObservable: Observable<Layer>;
-        private _onDisposeObserver;
-        onDispose: () => void;
+    class BoundingBox {
+        minimum: Vector3;
+        maximum: Vector3;
+        vectors: Vector3[];
+        center: Vector3;
+        extendSize: Vector3;
+        directions: Vector3[];
+        vectorsWorld: Vector3[];
+        minimumWorld: Vector3;
+        maximumWorld: Vector3;
+        private _worldMatrix;
+        constructor(minimum: Vector3, maximum: Vector3);
+        getWorldMatrix(): Matrix;
+        setWorldMatrix(matrix: Matrix): BoundingBox;
+        _update(world: Matrix): void;
+        isInFrustum(frustumPlanes: Plane[]): boolean;
+        isCompletelyInFrustum(frustumPlanes: Plane[]): boolean;
+        intersectsPoint(point: Vector3): boolean;
+        intersectsSphere(sphere: BoundingSphere): boolean;
+        intersectsMinMax(min: Vector3, max: Vector3): boolean;
+        static Intersects(box0: BoundingBox, box1: BoundingBox): boolean;
+        static IntersectsSphere(minPoint: Vector3, maxPoint: Vector3, sphereCenter: Vector3, sphereRadius: number): boolean;
+        static IsCompletelyInFrustum(boundingVectors: Vector3[], frustumPlanes: Plane[]): boolean;
+        static IsInFrustum(boundingVectors: Vector3[], frustumPlanes: Plane[]): boolean;
+    }
+}
+
+declare module BABYLON {
+    class BoundingInfo {
+        minimum: Vector3;
+        maximum: Vector3;
+        boundingBox: BoundingBox;
+        boundingSphere: BoundingSphere;
+        private _isLocked;
+        constructor(minimum: Vector3, maximum: Vector3);
+        isLocked: boolean;
+        update(world: Matrix): void;
+        isInFrustum(frustumPlanes: Plane[]): boolean;
+        isCompletelyInFrustum(frustumPlanes: Plane[]): boolean;
+        _checkCollision(collider: Collider): boolean;
+        intersectsPoint(point: Vector3): boolean;
+        intersects(boundingInfo: BoundingInfo, precise: boolean): boolean;
+    }
+}
+
+declare module BABYLON {
+    class BoundingSphere {
+        minimum: Vector3;
+        maximum: Vector3;
+        center: Vector3;
+        radius: number;
+        centerWorld: Vector3;
+        radiusWorld: number;
+        private _tempRadiusVector;
+        constructor(minimum: Vector3, maximum: Vector3);
+        _update(world: Matrix): void;
+        isInFrustum(frustumPlanes: Plane[]): boolean;
+        intersectsPoint(point: Vector3): boolean;
+        static Intersects(sphere0: BoundingSphere, sphere1: BoundingSphere): boolean;
+    }
+}
+
+declare module BABYLON {
+    class Ray {
+        origin: Vector3;
+        direction: Vector3;
+        length: number;
+        private _edge1;
+        private _edge2;
+        private _pvec;
+        private _tvec;
+        private _qvec;
+        constructor(origin: Vector3, direction: Vector3, length?: number);
+        intersectsBoxMinMax(minimum: Vector3, maximum: Vector3): boolean;
+        intersectsBox(box: BoundingBox): boolean;
+        intersectsSphere(sphere: BoundingSphere): boolean;
+        intersectsTriangle(vertex0: Vector3, vertex1: Vector3, vertex2: Vector3): IntersectionInfo;
+        intersectsPlane(plane: Plane): number;
+        private static smallnum;
+        private static rayl;
         /**
-        * An event triggered before rendering the scene
-        * @type {BABYLON.Observable}
-        */
-        onBeforeRenderObservable: Observable<Layer>;
-        private _onBeforeRenderObserver;
-        onBeforeRender: () => void;
+         * Intersection test between the ray and a given segment whithin a given tolerance (threshold)
+         * @param sega the first point of the segment to test the intersection against
+         * @param segb the second point of the segment to test the intersection against
+         * @param threshold the tolerance margin, if the ray doesn't intersect the segment but is close to the given threshold, the intersection is successful
+         * @return the distance from the ray origin to the intersection point if there's intersection, or -1 if there's no intersection
+         */
+        intersectionSegment(sega: Vector3, segb: Vector3, threshold: number): number;
+        static CreateNew(x: number, y: number, viewportWidth: number, viewportHeight: number, world: Matrix, view: Matrix, projection: Matrix): Ray;
         /**
-        * An event triggered after rendering the scene
-        * @type {BABYLON.Observable}
+        * Function will create a new transformed ray starting from origin and ending at the end point. Ray's length will be set, and ray will be
+        * transformed to the given world matrix.
+        * @param origin The origin point
+        * @param end The end point
+        * @param world a matrix to transform the ray to. Default is the identity matrix.
         */
-        onAfterRenderObservable: Observable<Layer>;
-        private _onAfterRenderObserver;
-        onAfterRender: () => void;
-        constructor(name: string, imgUrl: string, scene: Scene, isBackground?: boolean, color?: Color4);
-        render(): void;
-        dispose(): void;
+        static CreateNewFromTo(origin: Vector3, end: Vector3, world?: Matrix): Ray;
+        static Transform(ray: Ray, matrix: Matrix): Ray;
     }
 }
 
@@ -4395,6 +4351,50 @@ declare module BABYLON.Debug {
 }
 
 declare module BABYLON {
+    class Layer {
+        name: string;
+        texture: Texture;
+        isBackground: boolean;
+        color: Color4;
+        scale: Vector2;
+        offset: Vector2;
+        alphaBlendingMode: number;
+        alphaTest: boolean;
+        private _scene;
+        private _vertexDeclaration;
+        private _vertexStrideSize;
+        private _vertexBuffer;
+        private _indexBuffer;
+        private _effect;
+        private _alphaTestEffect;
+        /**
+        * An event triggered when the layer is disposed.
+        * @type {BABYLON.Observable}
+        */
+        onDisposeObservable: Observable<Layer>;
+        private _onDisposeObserver;
+        onDispose: () => void;
+        /**
+        * An event triggered before rendering the scene
+        * @type {BABYLON.Observable}
+        */
+        onBeforeRenderObservable: Observable<Layer>;
+        private _onBeforeRenderObserver;
+        onBeforeRender: () => void;
+        /**
+        * An event triggered after rendering the scene
+        * @type {BABYLON.Observable}
+        */
+        onAfterRenderObservable: Observable<Layer>;
+        private _onAfterRenderObserver;
+        onAfterRender: () => void;
+        constructor(name: string, imgUrl: string, scene: Scene, isBackground?: boolean, color?: Color4);
+        render(): void;
+        dispose(): void;
+    }
+}
+
+declare module BABYLON {
     class LensFlare {
         size: number;
         position: number;
@@ -4440,50 +4440,6 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
-    interface ISceneLoaderPlugin {
-        extensions: string;
-        importMesh: (meshesNames: any, scene: Scene, data: any, rootUrl: string, meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => boolean;
-        load: (scene: Scene, data: string, rootUrl: string) => boolean;
-    }
-    interface ISceneLoaderPluginAsync {
-        extensions: string;
-        importMeshAsync: (meshesNames: any, scene: Scene, data: any, rootUrl: string, onsuccess?: (meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => void, onerror?: () => void) => void;
-        loadAsync: (scene: Scene, data: string, rootUrl: string, onsuccess: () => void, onerror: () => void) => boolean;
-    }
-    class SceneLoader {
-        private static _ForceFullSceneLoadingForIncremental;
-        private static _ShowLoadingScreen;
-        static NO_LOGGING: number;
-        static MINIMAL_LOGGING: number;
-        static SUMMARY_LOGGING: number;
-        static DETAILED_LOGGING: number;
-        private static _loggingLevel;
-        static ForceFullSceneLoadingForIncremental: boolean;
-        static ShowLoadingScreen: boolean;
-        static loggingLevel: number;
-        private static _registeredPlugins;
-        private static _getPluginForFilename(sceneFilename);
-        static GetPluginForExtension(extension: string): ISceneLoaderPlugin | ISceneLoaderPluginAsync;
-        static RegisterPlugin(plugin: ISceneLoaderPlugin): void;
-        static ImportMesh(meshesNames: any, rootUrl: string, sceneFilename: string, scene: Scene, onsuccess?: (meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => void, progressCallBack?: () => void, onerror?: (scene: Scene, message: string, exception?: any) => void): void;
-        /**
-        * Load a scene
-        * @param rootUrl a string that defines the root url for scene and resources
-        * @param sceneFilename a string that defines the name of the scene file. can start with "data:" following by the stringified version of the scene
-        * @param engine is the instance of BABYLON.Engine to use to create the scene
-        */
-        static Load(rootUrl: string, sceneFilename: any, engine: Engine, onsuccess?: (scene: Scene) => void, progressCallBack?: any, onerror?: (scene: Scene) => void): void;
-        /**
-        * Append a scene
-        * @param rootUrl a string that defines the root url for scene and resources
-        * @param sceneFilename a string that defines the name of the scene file. can start with "data:" following by the stringified version of the scene
-        * @param scene is the instance of BABYLON.Scene to append to
-        */
-        static Append(rootUrl: string, sceneFilename: any, scene: Scene, onsuccess?: (scene: Scene) => void, progressCallBack?: any, onerror?: (scene: Scene) => void): void;
-    }
-}
-
-declare module BABYLON {
     class DirectionalLight extends Light implements IShadowLight {
         position: Vector3;
         direction: Vector3;
@@ -4618,6 +4574,50 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
+    interface ISceneLoaderPlugin {
+        extensions: string;
+        importMesh: (meshesNames: any, scene: Scene, data: any, rootUrl: string, meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => boolean;
+        load: (scene: Scene, data: string, rootUrl: string) => boolean;
+    }
+    interface ISceneLoaderPluginAsync {
+        extensions: string;
+        importMeshAsync: (meshesNames: any, scene: Scene, data: any, rootUrl: string, onsuccess?: (meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => void, onerror?: () => void) => void;
+        loadAsync: (scene: Scene, data: string, rootUrl: string, onsuccess: () => void, onerror: () => void) => boolean;
+    }
+    class SceneLoader {
+        private static _ForceFullSceneLoadingForIncremental;
+        private static _ShowLoadingScreen;
+        static NO_LOGGING: number;
+        static MINIMAL_LOGGING: number;
+        static SUMMARY_LOGGING: number;
+        static DETAILED_LOGGING: number;
+        private static _loggingLevel;
+        static ForceFullSceneLoadingForIncremental: boolean;
+        static ShowLoadingScreen: boolean;
+        static loggingLevel: number;
+        private static _registeredPlugins;
+        private static _getPluginForFilename(sceneFilename);
+        static GetPluginForExtension(extension: string): ISceneLoaderPlugin | ISceneLoaderPluginAsync;
+        static RegisterPlugin(plugin: ISceneLoaderPlugin): void;
+        static ImportMesh(meshesNames: any, rootUrl: string, sceneFilename: string, scene: Scene, onsuccess?: (meshes: AbstractMesh[], particleSystems: ParticleSystem[], skeletons: Skeleton[]) => void, progressCallBack?: () => void, onerror?: (scene: Scene, message: string, exception?: any) => void): void;
+        /**
+        * Load a scene
+        * @param rootUrl a string that defines the root url for scene and resources
+        * @param sceneFilename a string that defines the name of the scene file. can start with "data:" following by the stringified version of the scene
+        * @param engine is the instance of BABYLON.Engine to use to create the scene
+        */
+        static Load(rootUrl: string, sceneFilename: any, engine: Engine, onsuccess?: (scene: Scene) => void, progressCallBack?: any, onerror?: (scene: Scene) => void): void;
+        /**
+        * Append a scene
+        * @param rootUrl a string that defines the root url for scene and resources
+        * @param sceneFilename a string that defines the name of the scene file. can start with "data:" following by the stringified version of the scene
+        * @param scene is the instance of BABYLON.Scene to append to
+        */
+        static Append(rootUrl: string, sceneFilename: any, scene: Scene, onsuccess?: (scene: Scene) => void, progressCallBack?: any, onerror?: (scene: Scene) => void): void;
+    }
+}
+
+declare module BABYLON {
     /**
      * The color grading curves provide additional color adjustmnent that is applied after any color grading transform (3D LUT).
      * They allow basic adjustment of saturation and small exposure adjustments, along with color filter tinting to provide white balance adjustment or more stylistic effects.
@@ -6475,6 +6475,10 @@ declare module BABYLON {
         private _applyToMesh(mesh);
         private notifyUpdate(kind?);
         load(scene: Scene, onLoaded?: () => void): void;
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        toLeftHanded(): void;
         isDisposed(): boolean;
         dispose(): void;
         copy(id: string): Geometry;
@@ -7051,6 +7055,10 @@ declare module BABYLON {
          * This method creates a new index buffer each call.
          */
         setIndices(indices: number[] | Int32Array, totalVertices?: number): void;
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        toLeftHanded(): void;
         _bind(subMesh: SubMesh, effect: Effect, fillMode: number): void;
         _draw(subMesh: SubMesh, fillMode: number, instancesCount?: number): void;
         /**
@@ -9242,6 +9250,28 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
+    class ReflectionProbe {
+        name: string;
+        private _scene;
+        private _renderTargetTexture;
+        private _projectionMatrix;
+        private _viewMatrix;
+        private _target;
+        private _add;
+        private _attachedMesh;
+        invertYAxis: boolean;
+        position: Vector3;
+        constructor(name: string, size: number, scene: Scene, generateMipMaps?: boolean);
+        refreshRate: number;
+        getScene(): Scene;
+        cubeTexture: RenderTargetTexture;
+        renderList: AbstractMesh[];
+        attachToMesh(mesh: AbstractMesh): void;
+        dispose(): void;
+    }
+}
+
+declare module BABYLON {
     class AnaglyphPostProcess extends PostProcess {
         private _passedProcess;
         constructor(name: string, options: number | PostProcessOptions, rigCameras: Camera[], samplingMode?: number, engine?: Engine, reusable?: boolean);
@@ -9968,68 +9998,6 @@ declare module BABYLON {
 }
 
 declare module BABYLON {
-    class ReflectionProbe {
-        name: string;
-        private _scene;
-        private _renderTargetTexture;
-        private _projectionMatrix;
-        private _viewMatrix;
-        private _target;
-        private _add;
-        private _attachedMesh;
-        invertYAxis: boolean;
-        position: Vector3;
-        constructor(name: string, size: number, scene: Scene, generateMipMaps?: boolean);
-        refreshRate: number;
-        getScene(): Scene;
-        cubeTexture: RenderTargetTexture;
-        renderList: AbstractMesh[];
-        attachToMesh(mesh: AbstractMesh): void;
-        dispose(): void;
-    }
-}
-
-declare module BABYLON.Internals {
-    class _AlphaState {
-        private _isAlphaBlendDirty;
-        private _isBlendFunctionParametersDirty;
-        private _alphaBlend;
-        private _blendFunctionParameters;
-        isDirty: boolean;
-        alphaBlend: boolean;
-        setAlphaBlendFunctionParameters(value0: number, value1: number, value2: number, value3: number): void;
-        reset(): void;
-        apply(gl: WebGLRenderingContext): void;
-    }
-}
-
-declare module BABYLON.Internals {
-    class _DepthCullingState {
-        private _isDepthTestDirty;
-        private _isDepthMaskDirty;
-        private _isDepthFuncDirty;
-        private _isCullFaceDirty;
-        private _isCullDirty;
-        private _isZOffsetDirty;
-        private _depthTest;
-        private _depthMask;
-        private _depthFunc;
-        private _cull;
-        private _cullFace;
-        private _zOffset;
-        isDirty: boolean;
-        zOffset: number;
-        cullFace: number;
-        cull: boolean;
-        depthFunc: number;
-        depthMask: boolean;
-        depthTest: boolean;
-        reset(): void;
-        apply(gl: WebGLRenderingContext): void;
-    }
-}
-
-declare module BABYLON {
     class Sprite {
         name: string;
         position: Vector3;
@@ -10099,6 +10067,46 @@ declare module BABYLON {
 }
 
 declare module BABYLON.Internals {
+    class _AlphaState {
+        private _isAlphaBlendDirty;
+        private _isBlendFunctionParametersDirty;
+        private _alphaBlend;
+        private _blendFunctionParameters;
+        isDirty: boolean;
+        alphaBlend: boolean;
+        setAlphaBlendFunctionParameters(value0: number, value1: number, value2: number, value3: number): void;
+        reset(): void;
+        apply(gl: WebGLRenderingContext): void;
+    }
+}
+
+declare module BABYLON.Internals {
+    class _DepthCullingState {
+        private _isDepthTestDirty;
+        private _isDepthMaskDirty;
+        private _isDepthFuncDirty;
+        private _isCullFaceDirty;
+        private _isCullDirty;
+        private _isZOffsetDirty;
+        private _depthTest;
+        private _depthMask;
+        private _depthFunc;
+        private _cull;
+        private _cullFace;
+        private _zOffset;
+        isDirty: boolean;
+        zOffset: number;
+        cullFace: number;
+        cull: boolean;
+        depthFunc: number;
+        depthMask: boolean;
+        depthTest: boolean;
+        reset(): void;
+        apply(gl: WebGLRenderingContext): void;
+    }
+}
+
+declare module BABYLON.Internals {
     class AndOrNotEvaluator {
         static Eval(query: string, evaluateCallback: (val: any) => boolean): boolean;
         private static _HandleParenthesisContent(parenthesisContent, evaluateCallback);
@@ -11394,9 +11402,6 @@ declare module BABYLON {
     }
 }
 
-declare module BABYLON.Internals {
-}
-
 declare module BABYLON {
     class ShadowGenerator {
         private static _FILTER_NONE;
@@ -11455,6 +11460,9 @@ declare module BABYLON {
     }
 }
 
+declare module BABYLON.Internals {
+}
+
 declare module BABYLON {
     class BaseTexture {
         name: string;

dist/preview release/babylon.max.js

@@ -18069,6 +18069,15 @@ var BABYLON;
                 this._geometry.setIndices(indices, totalVertices);
             }
         };
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        Mesh.prototype.toLeftHanded = function () {
+            if (!this._geometry) {
+                return;
+            }
+            this._geometry.toLeftHanded();
+        };
         Mesh.prototype._bind = function (subMesh, effect, fillMode) {
             var engine = this.getScene().getEngine();
             // Wireframe
@@ -32821,6 +32830,37 @@ var BABYLON;
                 }
             }, function () { }, scene.database);
         };
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        Geometry.prototype.toLeftHanded = function () {
+            // Flip faces
+            var tIndices = this.getIndices(false);
+            if (tIndices != null && tIndices.length > 0) {
+                for (var i = 0; i < tIndices.length; i += 3) {
+                    var tTemp = tIndices[i + 0];
+                    tIndices[i + 0] = tIndices[i + 2];
+                    tIndices[i + 2] = tTemp;
+                }
+                this.setIndices(tIndices);
+            }
+            // Negate position.z
+            var tPositions = this.getVerticesData(BABYLON.VertexBuffer.PositionKind, false);
+            if (tPositions != null && tPositions.length > 0) {
+                for (var i = 0; i < tPositions.length; i += 3) {
+                    tPositions[i + 2] = -tPositions[i + 2];
+                }
+                this.setVerticesData(BABYLON.VertexBuffer.PositionKind, tPositions, false);
+            }
+            // Negate normal.z
+            var tNormals = this.getVerticesData(BABYLON.VertexBuffer.NormalKind, false);
+            if (tNormals != null && tNormals.length > 0) {
+                for (var i = 0; i < tNormals.length; i += 3) {
+                    tNormals[i + 2] = -tNormals[i + 2];
+                }
+                this.setVerticesData(BABYLON.VertexBuffer.NormalKind, tNormals, false);
+            }
+        };
         Geometry.prototype.isDisposed = function () {
             return this._isDisposed;
         };

dist/preview release/what's new.md

@@ -18,6 +18,7 @@
     - Added a dynamic [2D Bin Packing Algorithm](http://stackoverflow.com/questions/8762569/how-is-2d-bin-packing-achieved-programmatically), ([more info here](http://www.html5gamedevs.com/topic/22565-two-new-texture-types-fonttexture-and-maptexture/)) ([nockawa](https://github.com/nockawa))
     - Introduced Canvas2D feature: a 2D engine to render primitives, sprites in 2D, text. Canvas2D can be displayed in Screen Space (above the 3D scene) or in World Space to be a part of the Scene. [overview](http://doc.babylonjs.com/overviews/Using_The_Canvas2D), [tutorial](http://doc.babylonjs.com/tutorials/Using_the_Canvas2D) ([nockawa](https://github.com/nockawa))	
   - **Updates**
+    - Added `mesh.toLefthanded()` to convert a mesh from right handed system ([kesshi](https://github.com/Kesshi))
     - Renderlists can now also be defined using predicates ([deltakosh](https://github.com/deltakosh))
     - Added support for various normal maps conventions ([deltakosh](https://github.com/deltakosh))
     - Added postprocess.enablePixelPerfectMode to avoid texture scaling/stretching when dealing with non-power of 2 resolutions. cannot be used on post-processes chain ([deltakosh](https://github.com/deltakosh))

src/Mesh/babylon.geometry.js

@@ -345,6 +345,37 @@ var BABYLON;
                 }
             }, function () { }, scene.database);
         };
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        Geometry.prototype.toLeftHanded = function () {
+            // Flip faces
+            var tIndices = this.getIndices(false);
+            if (tIndices != null && tIndices.length > 0) {
+                for (var i = 0; i < tIndices.length; i += 3) {
+                    var tTemp = tIndices[i + 0];
+                    tIndices[i + 0] = tIndices[i + 2];
+                    tIndices[i + 2] = tTemp;
+                }
+                this.setIndices(tIndices);
+            }
+            // Negate position.z
+            var tPositions = this.getVerticesData(BABYLON.VertexBuffer.PositionKind, false);
+            if (tPositions != null && tPositions.length > 0) {
+                for (var i = 0; i < tPositions.length; i += 3) {
+                    tPositions[i + 2] = -tPositions[i + 2];
+                }
+                this.setVerticesData(BABYLON.VertexBuffer.PositionKind, tPositions, false);
+            }
+            // Negate normal.z
+            var tNormals = this.getVerticesData(BABYLON.VertexBuffer.NormalKind, false);
+            if (tNormals != null && tNormals.length > 0) {
+                for (var i = 0; i < tNormals.length; i += 3) {
+                    tNormals[i + 2] = -tNormals[i + 2];
+                }
+                this.setVerticesData(BABYLON.VertexBuffer.NormalKind, tNormals, false);
+            }
+        };
         Geometry.prototype.isDisposed = function () {
             return this._isDisposed;
         };

src/Mesh/babylon.geometry.ts

@@ -427,6 +427,41 @@
             }, () => { }, scene.database);
         }
 
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        public toLeftHanded(): void {
+
+            // Flip faces
+            let tIndices = this.getIndices(false);
+            if (tIndices != null && tIndices.length > 0) {
+                for (let i = 0; i < tIndices.length; i += 3) {
+                    let tTemp = tIndices[i + 0];
+                    tIndices[i + 0] = tIndices[i + 2];
+                    tIndices[i + 2] = tTemp;
+                }
+                this.setIndices(tIndices);
+            }
+
+            // Negate position.z
+            let tPositions = this.getVerticesData(VertexBuffer.PositionKind, false);
+            if (tPositions != null && tPositions.length > 0) {
+                for (let i = 0; i < tPositions.length; i += 3) {
+                    tPositions[i + 2] = -tPositions[i + 2];
+                }
+                this.setVerticesData(VertexBuffer.PositionKind, tPositions, false);
+            }
+
+            // Negate normal.z
+            let tNormals = this.getVerticesData(VertexBuffer.NormalKind, false);
+            if (tNormals != null && tNormals.length > 0) {
+                for (let i = 0; i < tNormals.length; i += 3) {
+                    tNormals[i + 2] = -tNormals[i + 2];
+                }
+                this.setVerticesData(VertexBuffer.NormalKind, tNormals, false);
+            }
+        }
+
         public isDisposed(): boolean {
             return this._isDisposed;
         }

src/Mesh/babylon.mesh.js

@@ -715,6 +715,15 @@ var BABYLON;
                 this._geometry.setIndices(indices, totalVertices);
             }
         };
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        Mesh.prototype.toLeftHanded = function () {
+            if (!this._geometry) {
+                return;
+            }
+            this._geometry.toLeftHanded();
+        };
         Mesh.prototype._bind = function (subMesh, effect, fillMode) {
             var engine = this.getScene().getEngine();
             // Wireframe

src/Mesh/babylon.mesh.ts

@@ -759,6 +759,17 @@
             }
         }
 
+        /**
+         * Invert the geometry to move from a right handed system to a left handed one.
+         */
+        public toLeftHanded(): void {
+            if (!this._geometry) {
+                return;
+            }
+
+            this._geometry.toLeftHanded();
+        }
+
         public _bind(subMesh: SubMesh, effect: Effect, fillMode: number): void {
             var engine = this.getScene().getEngine();