Restore missing updates

dist/preview release/what's new.md

@@ -12,6 +12,7 @@
  - Multi-platform Compressed Textures for Desktops & Mobile Devices with fall back.  Batch (dos) scripts to convert entire directories of .jpg's & .png's ([jcpalmer](https://github.com/Palmer-JC))
 
 ### Updates
+- Added `HDRCubeTextureAssetTask` to AssetManager ([deltakosh](https://github.com/deltakosh))
 - Engine now uses range based fog ([deltakosh](https://github.com/deltakosh))
 - `VertexBuffer.updatable` is now serialized ([deltakosh](https://github.com/deltakosh))
 - Added intersectsMeshes to Ray ([abow](https://github.com/abow))
@@ -21,6 +22,7 @@
 - `Effect.getVertexShaderSource()` and `Effect.getFragmentShaderSource()` now returns the effective shader code (including evaluation of #define) ([deltakosh](https://github.com/deltakosh))
 - GroundMesh : `getHeightAtCoordinates()`, `getNormalAtCoordinates()` and `getNormalAtCoordinatesToRef()` can now work with rotated grounds ([jerome](https://github.com/jbousquie))  
 - `GroundMesh`, `facetData` and `SolidParticleSystem` improvement in normal computations ([jerome](https://github.com/jbousquie))   
+- Added `AbstractMesh.addRotation()` ([jerome](https://github.com/jbousquie))  
  
 ### Canvas2D
 

src/Mesh/babylon.abstractMesh.ts

@@ -50,7 +50,7 @@
             return this._facetNb;
         }
         /**
-         * The number of subdivisions per axis in the partioning space
+         * The number (integer) of subdivisions per axis in the partioning space
          */
         public get partitioningSubdivisions(): number {
             return this._partitioningSubdivisions;
@@ -59,7 +59,7 @@
             this._partitioningSubdivisions = nb;
         } 
         /**
-         * The ratio to apply to the bouding box size to set to the partioning space.  
+         * The ratio (float) to apply to the bouding box size to set to the partioning space.  
          * Ex : 1.01 (default) the partioning space is 1% bigger than the bounding box.
          */
         public get partitioningBBoxRatio(): number {
@@ -69,7 +69,7 @@
             this._partitioningBBoxRatio = ratio;
         }
         /**
-         * Read-only : is the feature facetData enabled ?
+         * Read-only boolean : is the feature facetData enabled ?
          */
         public get isFacetDataEnabled(): boolean {
             return this._facetDataEnabled;
@@ -174,7 +174,6 @@
         private _diffPositionForCollisions = new Vector3(0, 0, 0);
         private _newPositionForCollisions = new Vector3(0, 0, 0);
         
-        private _collisionMask = -1;
         
         public get collisionMask(): number {
             return this._collisionMask;
@@ -325,10 +324,11 @@
         // Methods
         /**
          * Copies the paramater passed Matrix into the mesh Pose matrix.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public updatePoseMatrix(matrix: Matrix) {
+        public updatePoseMatrix(matrix: Matrix): AbstractMesh {
             this._poseMatrix.copyFrom(matrix);
+            return this;
         }
 
         /**
@@ -341,23 +341,24 @@
 
         /**
          * Disables the mesh edger rendering mode.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public disableEdgesRendering(): void {
+        public disableEdgesRendering(): AbstractMesh {
             if (this._edgesRenderer !== undefined) {
                 this._edgesRenderer.dispose();
                 this._edgesRenderer = undefined;
             }
+            return this;
         }
         /**
          * Enables the edge rendering mode on the mesh.  
          * This mode makes the mesh edges visible.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public enableEdgesRendering(epsilon = 0.95, checkVerticesInsteadOfIndices = false) {
+        public enableEdgesRendering(epsilon = 0.95, checkVerticesInsteadOfIndices = false): AbstractMesh {
             this.disableEdgesRendering();
-
             this._edgesRenderer = new EdgesRenderer(this, epsilon, checkVerticesInsteadOfIndices);
+            return this;
         }
 
         /**
@@ -424,10 +425,11 @@
 
         /**
          * Sets a mesh new object BoundingInfo.
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public setBoundingInfo(boundingInfo: BoundingInfo): void {
+        public setBoundingInfo(boundingInfo: BoundingInfo): AbstractMesh {
             this._boundingInfo = boundingInfo;
+            return this;
         }
 
         public get useBones(): boolean {
@@ -452,7 +454,6 @@
             if (this._masterMesh) {
                 return this._masterMesh.getWorldMatrix();
             }
-
             if (this._currentRenderId !== this.getScene().getRenderId()) {
                 this.computeWorldMatrix();
             }
@@ -469,28 +470,30 @@
 
         /**
          * Returns the current mesh absolute position.
-         * Retuns a Vector3
+         * Retuns a Vector3.
          */
         public get absolutePosition(): Vector3 {
             return this._absolutePosition;
         }
         /**
          * Prevents the World matrix to be computed any longer.
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public freezeWorldMatrix() {
+        public freezeWorldMatrix(): AbstractMesh {
             this._isWorldMatrixFrozen = false;  // no guarantee world is not already frozen, switch off temporarily
             this.computeWorldMatrix(true);
             this._isWorldMatrixFrozen = true;
+            return this;
         }
 
         /**
          * Allows back the World matrix computation. 
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
         public unfreezeWorldMatrix() {
             this._isWorldMatrixFrozen = false;
             this.computeWorldMatrix(true);
+            return this;
         }
 
         /**
@@ -504,11 +507,13 @@
         private static _rotationAxisCache = new Quaternion();
         /**
          * Rotates the mesh around the axis vector for the passed angle (amount) expressed in radians, in the given space.  
-         * space (default LOCAL) can be either BABYLON.Space.LOCAL, either BABYLON.Space.WORLD
+         * space (default LOCAL) can be either BABYLON.Space.LOCAL, either BABYLON.Space.WORLD.
+         * Note that the property `rotationQuaternion` is then automatically updated and the property `rotation` is set to (0,0,0) and no longer used.  
+         * The passed axis is also normalized.  
+         * Returns the AbstractMesh.
          */
-        public rotate(axis: Vector3, amount: number, space?: Space): void {
+        public rotate(axis: Vector3, amount: number, space?: Space): AbstractMesh {
             axis.normalize();
-
             if (!this.rotationQuaternion) {
                 this.rotationQuaternion = Quaternion.RotationYawPitchRoll(this.rotation.y, this.rotation.x, this.rotation.z);
                 this.rotation = Vector3.Zero();
@@ -522,21 +527,21 @@
                 if (this.parent) {
                     var invertParentWorldMatrix = this.parent.getWorldMatrix().clone();
                     invertParentWorldMatrix.invert();
-
                     axis = Vector3.TransformNormal(axis, invertParentWorldMatrix);
                 }
                 rotationQuaternion = Quaternion.RotationAxisToRef(axis, amount, AbstractMesh._rotationAxisCache);
                 rotationQuaternion.multiplyToRef(this.rotationQuaternion, this.rotationQuaternion);
             }
+            return this;
         }
 
         /**
          * Translates the mesh along the axis vector for the passed distance in the given space.  
-         * space (default LOCAL) can be either BABYLON.Space.LOCAL, either BABYLON.Space.WORLD
+         * space (default LOCAL) can be either BABYLON.Space.LOCAL, either BABYLON.Space.WORLD.
+         * Returns the AbstractMesh.
          */
-        public translate(axis: Vector3, distance: number, space?: Space): void {
+        public translate(axis: Vector3, distance: number, space?: Space): AbstractMesh {
             var displacementVector = axis.scale(distance);
-
             if (!space || (space as any) === Space.LOCAL) {
                 var tempV3 = this.getPositionExpressedInLocalSpace().add(displacementVector);
                 this.setPositionWithLocalVector(tempV3);
@@ -544,6 +549,7 @@
             else {
                 this.setAbsolutePosition(this.getAbsolutePosition().add(displacementVector));
             }
+            return this;
         }
 
         /**
@@ -557,7 +563,8 @@
          * mesh.addRotation(x1, 0, 0).addRotation(0, 0, z2).addRotation(0, 0, y3);
          * ```
          * Note that `addRotation()` accumulates the passed rotation values to the current ones and computes the .rotation or .rotationQuaternion updated values.  
-         * Under the hood, only quaternions are used. So it's a little faster is you use .rotationQuaternion because it doesn't need to translate them back to Euler angles.  
+         * Under the hood, only quaternions are used. So it's a little faster is you use .rotationQuaternion because it doesn't need to translate them back to Euler angles.   
+         * Returns the AbstractMesh.  
          */
         public addRotation(x: number, y: number, z: number): AbstractMesh {
             var rotationQuaternion;
@@ -579,7 +586,7 @@
 
         /**
          * Retuns the mesh absolute position in the World.  
-         * Returns a Vector3
+         * Returns a Vector3.
          */
         public getAbsolutePosition(): Vector3 {
             this.computeWorldMatrix();
@@ -588,17 +595,15 @@
 
         /**
          * Sets the mesh absolute position in the World from a Vector3 or an Array(3).
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public setAbsolutePosition(absolutePosition: Vector3): void {
+        public setAbsolutePosition(absolutePosition: Vector3): AbstractMesh {
             if (!absolutePosition) {
                 return;
             }
-
             var absolutePositionX;
             var absolutePositionY;
             var absolutePositionZ;
-
             if (absolutePosition.x === undefined) {
                 if (arguments.length < 3) {
                     return;
@@ -612,20 +617,19 @@
                 absolutePositionY = absolutePosition.y;
                 absolutePositionZ = absolutePosition.z;
             }
-
             if (this.parent) {
                 var invertParentWorldMatrix = this.parent.getWorldMatrix().clone();
                 invertParentWorldMatrix.invert();
-
                 var worldPosition = new Vector3(absolutePositionX, absolutePositionY, absolutePositionZ);
-
                 this.position = Vector3.TransformCoordinates(worldPosition, invertParentWorldMatrix);
             } else {
                 this.position.x = absolutePositionX;
                 this.position.y = absolutePositionY;
                 this.position.z = absolutePositionZ;
             }
+            return this;
         }
+
         // ================================== Point of View Movement =================================
         /**
          * Perform relative position change from the point of view of behind the front of the mesh.
@@ -634,9 +638,12 @@
          * @param {number} amountRight
          * @param {number} amountUp
          * @param {number} amountForward
+         * 
+         * Returns the AbstractMesh.
          */
-        public movePOV(amountRight: number, amountUp: number, amountForward: number): void {
+        public movePOV(amountRight: number, amountUp: number, amountForward: number): AbstractMesh {
             this.position.addInPlace(this.calcMovePOV(amountRight, amountUp, amountForward));
+            return this;
         }
 
         /**
@@ -645,7 +652,9 @@
          * Supports definition of mesh facing forward or backward.
          * @param {number} amountRight
          * @param {number} amountUp
-         * @param {number} amountForward
+         * @param {number} amountForward  
+         * 
+         * Returns a new Vector3.  
          */
         public calcMovePOV(amountRight: number, amountUp: number, amountForward: number): Vector3 {
             var rotMatrix = new Matrix();
@@ -664,9 +673,12 @@
          * @param {number} flipBack
          * @param {number} twirlClockwise
          * @param {number} tiltRight
+         * 
+         * Returns the AbstractMesh.  
          */
-        public rotatePOV(flipBack: number, twirlClockwise: number, tiltRight: number): void {
+        public rotatePOV(flipBack: number, twirlClockwise: number, tiltRight: number): AbstractMesh {
             this.rotation.addInPlace(this.calcRotatePOV(flipBack, twirlClockwise, tiltRight));
+            return this;
         }
 
         /**
@@ -675,6 +687,8 @@
          * @param {number} flipBack
          * @param {number} twirlClockwise
          * @param {number} tiltRight
+         * 
+         * Returns a new Vector3.
          */
         public calcRotatePOV(flipBack: number, twirlClockwise: number, tiltRight: number): Vector3 {
             var defForwardMult = this.definedFacingForward ? 1 : -1;
@@ -683,11 +697,12 @@
 
         /**
          * Sets a new pivot matrix to the mesh.  
-         * Returns nothing.
+         * Returns the AbstractMesh.
          */
-        public setPivotMatrix(matrix: Matrix): void {
+        public setPivotMatrix(matrix: Matrix): AbstractMesh {
             this._pivotMatrix = matrix;
             this._cache.pivotMatrixUpdated = true;
+            return this;
         }
 
         /**
@@ -743,42 +758,41 @@
             this._cache.billboardMode = -1;
         }
 
-        public markAsDirty(property: string): void {
+        public markAsDirty(property: string): AbstractMesh {
             if (property === "rotation") {
                 this.rotationQuaternion = null;
             }
             this._currentRenderId = Number.MAX_VALUE;
             this._isDirty = true;
+            return this;
         }
 
         /**
          * Updates the mesh BoundingInfo object and all its children BoundingInfo objects also.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public _updateBoundingInfo(): void {
+        public _updateBoundingInfo(): AbstractMesh {
             this._boundingInfo = this._boundingInfo || new BoundingInfo(this.absolutePosition, this.absolutePosition);
-
             this._boundingInfo.update(this.worldMatrixFromCache);
-
             this._updateSubMeshesBoundingInfo(this.worldMatrixFromCache);
+            return this;
         }
 
         /**
          * Update a mesh's children BoundingInfo objects only.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public _updateSubMeshesBoundingInfo(matrix: Matrix): void {
+        public _updateSubMeshesBoundingInfo(matrix: Matrix): AbstractMesh {
             if (!this.subMeshes) {
                 return;
             }
-
             for (var subIndex = 0; subIndex < this.subMeshes.length; subIndex++) {
                 var subMesh = this.subMeshes[subIndex];
-
                 if (!subMesh.IsGlobal) {
                     subMesh.updateBoundingInfo(matrix);
                 }
             }
+            return this;
         }
 
         /**
@@ -925,24 +939,33 @@
         }
 
         /**
-        * If you'd like to be called back after the mesh position, rotation or scaling has been updated
+        * If you'd like to be called back after the mesh position, rotation or scaling has been updated.  
         * @param func: callback function to add
+        *
+        * Returns the AbstractMesh. 
         */
-        public registerAfterWorldMatrixUpdate(func: (mesh: AbstractMesh) => void): void {
+        public registerAfterWorldMatrixUpdate(func: (mesh: AbstractMesh) => void): AbstractMesh {
             this.onAfterWorldMatrixUpdateObservable.add(func);
+            return this;
         }
 
         /**
-         * Removes a registered callback function
+         * Removes a registered callback function.  
+         * Returns the AbstractMesh.
          */
-        public unregisterAfterWorldMatrixUpdate(func: (mesh: AbstractMesh) => void): void {
+        public unregisterAfterWorldMatrixUpdate(func: (mesh: AbstractMesh) => void): AbstractMesh {
             this.onAfterWorldMatrixUpdateObservable.removeCallback(func);
+            return this;
         }
 
-        public setPositionWithLocalVector(vector3: Vector3): void {
+        /**
+         * Sets the mesh position in its local space.  
+         * Returns the AbstractMesh.  
+         */
+        public setPositionWithLocalVector(vector3: Vector3): AbstractMesh {
             this.computeWorldMatrix();
-
             this.position = Vector3.TransformNormal(vector3, this._localWorld);
+            return this;
         }
 
         /**
@@ -957,14 +980,18 @@
             return Vector3.TransformNormal(this.position, invLocalWorldMatrix);
         }
 
-        public locallyTranslate(vector3: Vector3): void {
+        /**
+         * Translates the mesh along the passed Vector3 in its local space.  
+         * Returns the AbstractMesh. 
+         */
+        public locallyTranslate(vector3: Vector3): AbstractMesh {
             this.computeWorldMatrix(true);
-
             this.position = Vector3.TransformCoordinates(vector3, this._localWorld);
+            return this;
         }
 
         private static _lookAtVectorCache = new Vector3(0, 0, 0);
-        public lookAt(targetPoint: Vector3, yawCor: number = 0, pitchCor: number = 0, rollCor: number = 0, space: Space = Space.LOCAL): void {
+        public lookAt(targetPoint: Vector3, yawCor: number = 0, pitchCor: number = 0, rollCor: number = 0, space: Space = Space.LOCAL): AbstractMesh {
             /// <summary>Orients a mesh towards a target point. Mesh must be drawn facing user.</summary>
             /// <param name="targetPoint" type="Vector3">The position (must be in same space as current mesh) to look at</param>
             /// <param name="yawCor" type="Number">optional yaw (y-axis) correction in radians</param>
@@ -980,24 +1007,26 @@
             var pitch = Math.atan2(dv.y, len);
             this.rotationQuaternion = this.rotationQuaternion || new Quaternion();
             Quaternion.RotationYawPitchRollToRef(yaw + yawCor, pitch + pitchCor, rollCor, this.rotationQuaternion);
+            return this;
         }
 
-        public attachToBone(bone: Bone, affectedMesh: AbstractMesh): void {
+        public attachToBone(bone: Bone, affectedMesh: AbstractMesh): AbstractMesh {
             this._meshToBoneReferal = affectedMesh;
             this.parent = bone;
 
             if (bone.getWorldMatrix().determinant() < 0) {
                 this.scalingDeterminant *= -1;
             }
+            return this;
         }
 
-        public detachFromBone(): void {
+        public detachFromBone(): AbstractMesh {
             if (this.parent.getWorldMatrix().determinant() < 0) {
                 this.scalingDeterminant *= -1;
             }
-
             this._meshToBoneReferal = null;
             this.parent = null;
+            return this;
         }
 
         /**
@@ -1090,32 +1119,35 @@
             return Vector3.TransformCoordinates(this.absolutePosition, camera.getViewMatrix());
         }
 
+        /**
+         * Returns the distance from the mesh to the active camera.  
+         * Returns a float.  
+         */
         public getDistanceToCamera(camera?: Camera): number {
             if (!camera) {
                 camera = this.getScene().activeCamera;
             }
-
             return this.absolutePosition.subtract(camera.position).length();
         }
 
-        public applyImpulse(force: Vector3, contactPoint: Vector3): void {
+        public applyImpulse(force: Vector3, contactPoint: Vector3): AbstractMesh {
             if (!this.physicsImpostor) {
                 return;
             }
-
             this.physicsImpostor.applyImpulse(force, contactPoint);
+            return this;
         }
 
-        public setPhysicsLinkWith(otherMesh: Mesh, pivot1: Vector3, pivot2: Vector3, options?: any): void {
+        public setPhysicsLinkWith(otherMesh: Mesh, pivot1: Vector3, pivot2: Vector3, options?: any): AbstractMesh {
             if (!this.physicsImpostor || !otherMesh.physicsImpostor) {
                 return;
             }
-
             this.physicsImpostor.createJoint(otherMesh.physicsImpostor, PhysicsJoint.HingeJoint, {
                 mainPivot: pivot1,
                 connectedPivot: pivot2,
                 nativeParams: options
-            })
+            });
+            return this;
         }
 
         /**
@@ -1153,7 +1185,7 @@
             }
         }
 
-        public moveWithCollisions(velocity: Vector3): void {
+        public moveWithCollisions(velocity: Vector3): AbstractMesh {
             var globalPosition = this.getAbsolutePosition();
 
             globalPosition.subtractFromFloatsToRef(0, this.ellipsoid.y, 0, this._oldPositionForCollisions);
@@ -1161,6 +1193,7 @@
             this._collider.radius = this.ellipsoid;
 
             this.getScene().collisionCoordinator.getNewPosition(this._oldPositionForCollisions, velocity, this._collider, 3, this, this._onCollisionPositionChange, this.uniqueId);
+            return this;
         }
 
         private _onCollisionPositionChange = (collisionId: number, newPosition: Vector3, collidedMesh: AbstractMesh = null) => {
@@ -1186,6 +1219,7 @@
         /**
         * This function will create an octree to help to select the right submeshes for rendering, picking and collision computations.  
         * Please note that you must have a decent number of submeshes to get performance improvements when using an octree.  
+        * Returns an Octree of submeshes.  
         */
         public createOrUpdateSubmeshesOctree(maxCapacity = 64, maxDepth = 2): Octree<SubMesh> {
             if (!this._submeshesOctree) {
@@ -1202,7 +1236,7 @@
         }
 
         // Collisions
-        public _collideForSubMesh(subMesh: SubMesh, transformMatrix: Matrix, collider: Collider): void {
+        public _collideForSubMesh(subMesh: SubMesh, transformMatrix: Matrix, collider: Collider): AbstractMesh {
             this._generatePointsArray();
             // Transformation
             if (!subMesh._lastColliderWorldVertices || !subMesh._lastColliderTransformMatrix.equals(transformMatrix)) {
@@ -1220,9 +1254,10 @@
             if (collider.collisionFound) {
                 collider.collidedMesh = this;
             }
+            return this;
         }
 
-        public _processCollisionsForSubMeshes(collider: Collider, transformMatrix: Matrix): void {
+        public _processCollisionsForSubMeshes(collider: Collider, transformMatrix: Matrix): AbstractMesh {
             var subMeshes: SubMesh[];
             var len: number;
 
@@ -1247,18 +1282,19 @@
 
                 this._collideForSubMesh(subMesh, transformMatrix, collider);
             }
+            return this;
         }
 
-        public _checkCollision(collider: Collider): void {
+        public _checkCollision(collider: Collider): AbstractMesh {
             // Bounding box test
             if (!this._boundingInfo._checkCollision(collider))
-                return;
+                return this;
 
             // Transformation matrix
             Matrix.ScalingToRef(1.0 / collider.radius.x, 1.0 / collider.radius.y, 1.0 / collider.radius.z, this._collisionsScalingMatrix);
             this.worldMatrixFromCache.multiplyToRef(this._collisionsScalingMatrix, this._collisionsTransformMatrix);
-
             this._processCollisionsForSubMeshes(collider, this._collisionsTransformMatrix);
+            return this;
         }
 
         // Picking
@@ -1354,9 +1390,9 @@
 
         /**
          * Disposes all the mesh submeshes.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public releaseSubMeshes(): void {
+        public releaseSubMeshes(): AbstractMesh {
             if (this.subMeshes) {
                 while (this.subMeshes.length) {
                     this.subMeshes[0].dispose();
@@ -1364,6 +1400,7 @@
             } else {
                 this.subMeshes = new Array<SubMesh>();
             }
+            return this;
         }
 
         /**
@@ -1498,14 +1535,15 @@
         /**
          * Sets the Vector3 "result" as the rotated Vector3 "localAxis" in the same rotation than the mesh.
          * localAxis is expressed in the mesh local space.
-         * result is computed in the Wordl space from the mesh World matrix.
-         * Returns nothing.  
+         * result is computed in the Wordl space from the mesh World matrix.  
+         * Returns the AbstractMesh.  
          */
-        public getDirectionToRef(localAxis:Vector3, result:Vector3): void {
+        public getDirectionToRef(localAxis:Vector3, result:Vector3): AbstractMesh {
             Vector3.TransformNormalToRef(localAxis, this.getWorldMatrix(), result);
+            return this;
         }
 
-        public setPivotPoint(point:Vector3, space:Space = Space.LOCAL): void{
+        public setPivotPoint(point:Vector3, space:Space = Space.LOCAL): AbstractMesh {
 
             if(this.getScene().getRenderId() == 0){
                 this.computeWorldMatrix(true);
@@ -1520,13 +1558,11 @@
             }
 
             Vector3.TransformCoordinatesToRef(point, wm, this.position);
-
             this._pivotMatrix.m[12] = -point.x;
             this._pivotMatrix.m[13] = -point.y;
             this._pivotMatrix.m[14] = -point.z;
-
             this._cache.pivotMatrixUpdated = true;
-
+            return this;
         }
 
         /**
@@ -1539,12 +1575,14 @@
         }
 
         /**
-         * Sets the passed Vector3 "result" with the coordinates of the mesh pivot point in the local space.  
+         * Sets the passed Vector3 "result" with the coordinates of the mesh pivot point in the local space.   
+         * Returns the AbstractMesh.   
          */
-        public getPivotPointToRef(result:Vector3): void{
+        public getPivotPointToRef(result:Vector3): AbstractMesh{
             result.x = -this._pivotMatrix.m[12];
             result.y = -this._pivotMatrix.m[13];
             result.z = -this._pivotMatrix.m[14];
+            return this;
         }
 
         /**
@@ -1559,9 +1597,9 @@
         /**
          * Defines the passed mesh as the parent of the current mesh.  
          * If keepWorldPositionRotation is set to `true` (default `false`), the current mesh position and rotation are kept.
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public setParent(mesh:AbstractMesh, keepWorldPositionRotation = false): void{
+        public setParent(mesh:AbstractMesh, keepWorldPositionRotation = false): AbstractMesh {
 
             var child = this;
             var parent = mesh;
@@ -1631,38 +1669,45 @@
 
             }
             child.parent = parent;
+            return this;
         }
 
         /**
          * Adds the passed mesh as a child to the current mesh.  
          * If keepWorldPositionRotation is set to `true` (default `false`), the child world position and rotation are kept.  
-         * Returns nothing.  
+         * Returns the AbstractMesh.  
          */
-        public addChild(mesh:AbstractMesh, keepWorldPositionRotation = false): void{
+        public addChild(mesh:AbstractMesh, keepWorldPositionRotation = false): AbstractMesh {
             mesh.setParent(this, keepWorldPositionRotation);
+            return this;
         }
 
         /**
          * Removes the passed mesh from the current mesh children list.  
+         * Returns the AbstractMesh.  
          */
-        public removeChild(mesh:AbstractMesh, keepWorldPositionRotation = false): void{
+        public removeChild(mesh:AbstractMesh, keepWorldPositionRotation = false): AbstractMesh {
             mesh.setParent(null, keepWorldPositionRotation);
+            return this;
         }
 
         /**
          * Sets the Vector3 "result" coordinates with the mesh pivot point World coordinates.  
+         * Returns the AbstractMesh.  
          */
-        public getAbsolutePivotPointToRef(result:Vector3): void{
+        public getAbsolutePivotPointToRef(result:Vector3): AbstractMesh {
             result.x = this._pivotMatrix.m[12];
             result.y = this._pivotMatrix.m[13];
             result.z = this._pivotMatrix.m[14];
             this.getPivotPointToRef(result);
             Vector3.TransformCoordinatesToRef(result, this.getWorldMatrix(), result);
+            return this;
         }
 
        // Facet data
         /** 
-         *  Initialize the facet data arrays : facetNormals, facetPositions and facetPartitioning
+         *  Initialize the facet data arrays : facetNormals, facetPositions and facetPartitioning.   
+         * Returns the AbstractMesh.  
          */
         private _initFacetData(): AbstractMesh {
             if (!this._facetNormals) {
@@ -1688,7 +1733,8 @@
         /**
          * Updates the mesh facetData arrays and the internal partitioning when the mesh is morphed or updated.  
          * This method can be called within the render loop.  
-         * You don't need to call this method by yourself in the render loop when you update/morph a mesh with the methods CreateXXX() as they automatically manage this computation.  
+         * You don't need to call this method by yourself in the render loop when you update/morph a mesh with the methods CreateXXX() as they automatically manage this computation.   
+         * Returns the AbstractMesh.  
          */
         public updateFacetData(): AbstractMesh {
             if (!this._facetDataEnabled) {
@@ -1742,7 +1788,7 @@
             return this._facetPositions;           
         }
         /**
-         * Returns the facetLocalPartioning array
+         * Returns the facetLocalPartioning array.
          */
         public getFacetLocalPartitioning(): number[][] {
             if (!this._facetPartitioning) {
@@ -1761,7 +1807,7 @@
         }
         /**
          * Sets the reference Vector3 with the i-th facet position in the world system.  
-         * Returns the mesh.  
+         * Returns the AbstractMesh.  
          */
         public getFacetPositionToRef(i: number, ref: Vector3): AbstractMesh {
             var localPos = (this.getFacetLocalPositions())[i];
@@ -1780,7 +1826,7 @@
         }
         /**
          * Sets the reference Vector3 with the i-th facet normal in the world system.  
-         * Returns the mesh.  
+         * Returns the AbstractMesh.  
          */
         public getFacetNormalToRef(i: number, ref: Vector3) {
             var localNorm = (this.getFacetLocalNormals())[i];
@@ -1891,7 +1937,7 @@
         }
         /** 
          * Disables the feature FacetData and frees the related memory.  
-         * Returns the mesh.  
+         * Returns the AbstractMesh.  
          */
         public disableFacetData(): AbstractMesh {
             if (this._facetDataEnabled) {
@@ -1905,4 +1951,4 @@
         } 
 
     }
-}
+}

src/Mesh/babylon.groundMesh.ts

@@ -108,13 +108,15 @@
         /**
         * Force the heights to be recomputed for getHeightAtCoordinates() or getNormalAtCoordinates()
         * if the ground has been updated.
-        * This can be used in the render loop
+        * This can be used in the render loop.  
+        * Returns the GroundMesh.  
         */
-        public updateCoordinateHeights(): void {
+        public updateCoordinateHeights(): GroundMesh {
             if (!this._heightQuads || this._heightQuads.length == 0) {
                 this._initHeightQuads();
             }
             this._computeHeightQuads();
+            return this;
         }
 
         // Returns the element "facet" from the heightQuads array relative to (x, z) local coordinates
@@ -138,8 +140,9 @@
         // a quad is two triangular facets separated by a slope, so a "facet" element is 1 slope + 2 facets
         // slope : Vector2(c, h) = 2D diagonal line equation setting appart two triangular facets in a quad : z = cx + h
         // facet1 : Vector4(a, b, c, d) = first facet 3D plane equation : ax + by + cz + d = 0
-        // facet2 :  Vector4(a, b, c, d) = second facet 3D plane equation : ax + by + cz + d = 0
-        private _initHeightQuads(): void {
+        // facet2 :  Vector4(a, b, c, d) = second facet 3D plane equation : ax + by + cz + d = 0  
+        // Returns the GroundMesh.  
+        private _initHeightQuads(): GroundMesh {
             var subdivisionsX = this._subdivisionsX;
             var subdivisionsY = this._subdivisionsY;
             this._heightQuads = new Array();
@@ -149,13 +152,15 @@
                     this._heightQuads[row * subdivisionsX + col] = quad;
                 }
             }
+            return this;
         }
 
         // Compute each quad element values and update the the heightMap array :
         // slope : Vector2(c, h) = 2D diagonal line equation setting appart two triangular facets in a quad : z = cx + h
         // facet1 : Vector4(a, b, c, d) = first facet 3D plane equation : ax + by + cz + d = 0
-        // facet2 :  Vector4(a, b, c, d) = second facet 3D plane equation : ax + by + cz + d = 0
-        private _computeHeightQuads(): void {
+        // facet2 :  Vector4(a, b, c, d) = second facet 3D plane equation : ax + by + cz + d = 0  
+        // Returns the GroundMesh.  
+        private _computeHeightQuads(): GroundMesh {
             var positions = this.getVerticesData(VertexBuffer.PositionKind);
             var v1 = Tmp.Vector3[3];
             var v2 = Tmp.Vector3[2];
@@ -220,6 +225,7 @@
                     quad.facet2.copyFromFloats(norm2.x, norm2.y, norm2.z, d2);
                 }
             }
+            return this;
         }
     }
-}
+}

src/Mesh/babylon.instancedMesh.ts

@@ -30,6 +30,9 @@
             this._syncSubMeshes();
         }
 
+        /**
+         * Returns the string "InstancedMesh".  
+         */
         public getClassName(): string {
             return "InstancedMesh";
         }          
@@ -55,6 +58,9 @@
             return this._sourceMesh.renderingGroupId;
         }
 
+        /**
+         * Returns the total number of vertices (integer).  
+         */
         public getTotalVertices(): number {
             return this._sourceMesh.getTotalVertices();
         }
@@ -63,14 +69,23 @@
             return this._sourceMesh;
         }
 
+        /**
+         * Returns a float array or a Float32Array of the requested kind of data : positons, normals, uvs, etc.  
+         */
         public getVerticesData(kind: string, copyWhenShared?: boolean): number[] | Float32Array {
             return this._sourceMesh.getVerticesData(kind, copyWhenShared);
         }
 
+        /**
+         * Boolean : True if the mesh owns the requested kind of data.
+         */
         public isVerticesDataPresent(kind: string): boolean {
             return this._sourceMesh.isVerticesDataPresent(kind);
         }
 
+        /**
+         * Returns an array of indices (IndicesArray).  
+         */
         public getIndices(): IndicesArray {
             return this._sourceMesh.getIndices();
         }
@@ -79,26 +94,36 @@
             return this._sourceMesh._positions;
         }
 
-        public refreshBoundingInfo(): void {
+        /**
+         * Sets a new updated BoundingInfo to the mesh.  
+         * Returns the mesh.  
+         */
+        public refreshBoundingInfo(): InstancedMesh {
             var meshBB = this._sourceMesh.getBoundingInfo();
 
             this._boundingInfo = new BoundingInfo(meshBB.minimum.clone(), meshBB.maximum.clone());
 
             this._updateBoundingInfo();
+            return this;
         }
 
-        public _preActivate(): void {
+        public _preActivate(): InstancedMesh {
             if (this._currentLOD) {
                 this._currentLOD._preActivate();
             }
+            return this;
         }
 
-        public _activate(renderId: number): void {
+        public _activate(renderId: number): InstancedMesh {
             if (this._currentLOD) {
                 this._currentLOD._registerInstanceForRenderId(this, renderId);
             }
+            return this;
         }
 
+        /**
+         * Returns the current associated LOD AbstractMesh.  
+         */
         public getLOD(camera: Camera): AbstractMesh {
             this._currentLOD = <Mesh>this.sourceMesh.getLOD(this.getScene().activeCamera, this.getBoundingInfo().boundingSphere);
 
@@ -109,20 +134,28 @@
             return this._currentLOD;
         }
 
-        public _syncSubMeshes(): void {
+        public _syncSubMeshes(): InstancedMesh {
             this.releaseSubMeshes();
             if (this._sourceMesh.subMeshes) {
                 for (var index = 0; index < this._sourceMesh.subMeshes.length; index++) {
                     this._sourceMesh.subMeshes[index].clone(this, this._sourceMesh);
                 }
             }
+            return this;
         }
 
         public _generatePointsArray(): boolean {
             return this._sourceMesh._generatePointsArray();
         }
 
-        // Clone
+        /**
+         * Creates a new InstancedMesh from the current mesh.  
+         * - name (string) : the cloned mesh name
+         * - newParent (optional Node) : the optional Node to parent the clone to.  
+         * - doNotCloneChildren (optional boolean, default `false`) : if `true` the model children aren't cloned.  
+         * 
+         * Returns the clone.  
+         */
         public clone(name: string, newParent: Node, doNotCloneChildren?: boolean): InstancedMesh {
             var result = this._sourceMesh.createInstance(name);
 
@@ -153,7 +186,10 @@
             return result;
         }
 
-        // Dispose
+        /**
+         * Disposes the InstancedMesh.  
+         * Returns nothing.  
+         */
         public dispose(doNotRecurse?: boolean): void {
 
             // Remove from mesh
@@ -163,4 +199,4 @@
             super.dispose(doNotRecurse);
         }
     }
-} 
+} 

src/Mesh/babylon.linesMesh.ts

@@ -53,6 +53,9 @@
             this._positionBuffer[VertexBuffer.PositionKind] = null;
         }
 
+        /**
+         * Returns the string "LineMesh"  
+         */
         public getClassName(): string {
             return "LinesMesh";
         }      
@@ -70,7 +73,7 @@
             return null;
         }
 
-        public _bind(subMesh: SubMesh, effect: Effect, fillMode: number): void {
+        public _bind(subMesh: SubMesh, effect: Effect, fillMode: number): LinesMesh {
             var engine = this.getScene().getEngine();
 
             this._positionBuffer[VertexBuffer.PositionKind] = this._geometry.getVertexBuffer(VertexBuffer.PositionKind);
@@ -80,17 +83,19 @@
 
             // Color
             this._colorShader.setColor4("color", this.color.toColor4(this.alpha));
+            return this;
         }
 
-        public _draw(subMesh: SubMesh, fillMode: number, instancesCount?: number): void {
+        public _draw(subMesh: SubMesh, fillMode: number, instancesCount?: number): LinesMesh {
             if (!this._geometry || !this._geometry.getVertexBuffers() || !this._geometry.getIndexBuffer()) {
-                return;
+                return this;
             }
 
             var engine = this.getScene().getEngine();
 
             // Draw order
             engine.draw(false, subMesh.indexStart, subMesh.indexCount);
+            return this;
         }
 
         public dispose(doNotRecurse?: boolean): void {
@@ -99,8 +104,11 @@
             super.dispose(doNotRecurse);
         }
 
+        /**
+         * Returns a new LineMesh object cloned from the current one.  
+         */
         public clone(name: string, newParent?: Node, doNotCloneChildren?: boolean): LinesMesh {
             return new LinesMesh(name, this.getScene(), newParent, this, doNotCloneChildren);
         }
     }
-} 
+} 

src/Mesh/babylon.mesh.ts

@@ -204,11 +204,15 @@
         }
 
         // Methods
+        /**
+         * Returns the string "Mesh".  
+         */
         public getClassName(): string {
             return "Mesh";
         }   
 
         /**
+         * Returns a string.  
          * @param {boolean} fullDetails - support for multiple levels of logging within scene loading
          */
         public toString(fullDetails?: boolean): string {
@@ -228,6 +232,10 @@
             return ret;
         }
 
+        /**
+         * True if the mesh has some Levels Of Details (LOD).  
+         * Returns a boolean. 
+         */
         public get hasLODLevels(): boolean {
             return this._LODLevels.length > 0;
         }
@@ -273,6 +281,7 @@
          * Returns the LOD level mesh at the passed distance or null if not found.  
          * It is related to the method `addLODLevel(distance, mesh)`. 
          * tuto : http://doc.babylonjs.com/tutorials/How_to_use_LOD   
+         * Returns an object Mesh or `null`.  
          */
         public getLODLevelAtDistance(distance: number): Mesh {
             for (var index = 0; index < this._LODLevels.length; index++) {
@@ -534,19 +543,23 @@
         /**  
          * This function affects parametric shapes on vertex position update only : ribbons, tubes, etc. 
          * It has no effect at all on other shapes.
-         * It prevents the mesh normals from being recomputed on next `positions` array update.
+         * It prevents the mesh normals from being recomputed on next `positions` array update.  
+         * Returns the Mesh.  
          */
-        public freezeNormals(): void {
+        public freezeNormals(): Mesh {
             this._areNormalsFrozen = true;
+            return this;
         }
 
         /**  
          * This function affects parametric shapes on vertex position update only : ribbons, tubes, etc. 
          * It has no effect at all on other shapes.
-         * It reactivates the mesh normals computation if it was previously frozen.
+         * It reactivates the mesh normals computation if it was previously frozen.  
+         * Returns the Mesh.  
          */
-        public unfreezeNormals(): void {
+        public unfreezeNormals(): Mesh {
             this._areNormalsFrozen = false;
+            return this;
         }
 
         /**
@@ -557,23 +570,25 @@
         }
 
         // Methods
-        public _preActivate(): void {
+        public _preActivate(): Mesh {
             var sceneRenderId = this.getScene().getRenderId();
             if (this._preActivateId === sceneRenderId) {
-                return;
+                return this;
             }
 
             this._preActivateId = sceneRenderId;
             this._visibleInstances = null;
+            return this;
         }
 
-        public _preActivateForIntermediateRendering(renderId: number): void {
+        public _preActivateForIntermediateRendering(renderId: number): Mesh {
             if (this._visibleInstances) {
                 this._visibleInstances.intermediateDefaultRenderId = renderId;
             }
+            return this;
         }
 
-        public _registerInstanceForRenderId(instance: InstancedMesh, renderId: number) {
+        public _registerInstanceForRenderId(instance: InstancedMesh, renderId: number): Mesh {
             if (!this._visibleInstances) {
                 this._visibleInstances = {};
                 this._visibleInstances.defaultRenderId = renderId;
@@ -585,13 +600,15 @@
             }
 
             this._visibleInstances[renderId].push(instance);
+            return this;
         }
 
         /**
          * This method recomputes and sets a new BoundingInfo to the mesh unless it is locked.
-         * This means the mesh underlying bounding box and sphere are recomputed. 
+         * This means the mesh underlying bounding box and sphere are recomputed.   
+         * Returns the Mesh.  
          */
-        public refreshBoundingInfo(): void {
+        public refreshBoundingInfo(): Mesh {
             if (this._boundingInfo.isLocked) {
                 return;
             }
@@ -609,6 +626,7 @@
             }
 
             this._updateBoundingInfo();
+            return this;
         }
 
         public _createGlobalSubMesh(): SubMesh {
@@ -670,9 +688,11 @@
          * - BABYLON.VertexBuffer.MatricesIndicesKind
          * - BABYLON.VertexBuffer.MatricesIndicesExtraKind
          * - BABYLON.VertexBuffer.MatricesWeightsKind
-         * - BABYLON.VertexBuffer.MatricesWeightsExtraKind
+         * - BABYLON.VertexBuffer.MatricesWeightsExtraKind  
+         * 
+         * Returns the Mesh.  
          */
-        public setVerticesData(kind: string, data: number[] | Float32Array, updatable?: boolean, stride?: number): void {
+        public setVerticesData(kind: string, data: number[] | Float32Array, updatable?: boolean, stride?: number): Mesh {
             if (!this._geometry) {
                 var vertexData = new VertexData();
                 vertexData.set(data, kind);
@@ -684,9 +704,14 @@
             else {
                 this._geometry.setVerticesData(kind, data, updatable, stride);
             }
+            return this;
         }
 
-        public setVerticesBuffer(buffer: VertexBuffer): void {
+        /**
+         * Sets the mesh VertexBuffer.  
+         * Returns the Mesh.  
+         */
+        public setVerticesBuffer(buffer: VertexBuffer): Mesh {
             if (!this._geometry) {
                 var scene = this.getScene();
 
@@ -694,6 +719,7 @@
             }
 
             this._geometry.setVerticesBuffer(buffer);
+            return this;
         }
 
         /**
@@ -717,8 +743,10 @@
          * - BABYLON.VertexBuffer.MatricesIndicesExtraKind
          * - BABYLON.VertexBuffer.MatricesWeightsKind
          * - BABYLON.VertexBuffer.MatricesWeightsExtraKind
+         * 
+         * Returns the Mesh.  
          */
-        public updateVerticesData(kind: string, data: number[] | Float32Array, updateExtends?: boolean, makeItUnique?: boolean): void {
+        public updateVerticesData(kind: string, data: number[] | Float32Array, updateExtends?: boolean, makeItUnique?: boolean): Mesh {
             if (!this._geometry) {
                 return;
             }
@@ -729,6 +757,7 @@
                 this.makeGeometryUnique();
                 this.updateVerticesData(kind, data, updateExtends, false);
             }
+            return this;
         }
 
         /**
@@ -754,8 +783,9 @@
          * tuto : http://doc.babylonjs.com/tutorials/How_to_dynamically_morph_a_mesh#other-shapes-updatemeshpositions  
          * The parameter `positionFunction` is a simple JS function what is passed the mesh `positions` array. It doesn't need to return anything.
          * The parameter `computeNormals` is a boolean (default true) to enable/disable the mesh normal recomputation after the vertex position update.     
+         * Returns the Mesh.  
          */
-        public updateMeshPositions(positionFunction, computeNormals: boolean = true): void {
+        public updateMeshPositions(positionFunction, computeNormals: boolean = true): Mesh {
             var positions = this.getVerticesData(VertexBuffer.PositionKind);
             positionFunction(positions);
             this.updateVerticesData(VertexBuffer.PositionKind, positions, false, false);
@@ -765,28 +795,33 @@
                 VertexData.ComputeNormals(positions, indices, normals);
                 this.updateVerticesData(VertexBuffer.NormalKind, normals, false, false);
             }
+            return this;
         }
 
 
-        public makeGeometryUnique() {
+        /**
+         * Creates a un-shared specific occurence of the geometry for the mesh.  
+         * Returns the Mesh.  
+         */
+        public makeGeometryUnique(): Mesh {
             if (!this._geometry) {
                 return;
             }
             var oldGeometry = this._geometry;
-
             var geometry = this._geometry.copy(Geometry.RandomId());
-
             oldGeometry.releaseForMesh(this, true);
             geometry.applyToMesh(this);
+            return this;
         }
 
         /**
          * Sets the mesh indices.  
          * Expects an array populated with integers or a typed array (Int32Array, Uint32Array, Uint16Array).
          * If the mesh has no geometry, a new Geometry object is created and set to the mesh. 
-         * This method creates a new index buffer each call.
+         * This method creates a new index buffer each call.  
+         * Returns the Mesh.  
          */
-        public setIndices(indices: IndicesArray, totalVertices?: number): void {
+        public setIndices(indices: IndicesArray, totalVertices?: number): Mesh {
             if (!this._geometry) {
                 var vertexData = new VertexData();
                 vertexData.indices = indices;
@@ -798,20 +833,22 @@
             else {
                 this._geometry.setIndices(indices, totalVertices);
             }
+            return this;
         }
 
         /**
-         * Invert the geometry to move from a right handed system to a left handed one.
+         * Invert the geometry to move from a right handed system to a left handed one.  
+         * Returns the Mesh.  
          */
-        public toLeftHanded(): void {
+        public toLeftHanded(): Mesh {
             if (!this._geometry) {
                 return;
             }
-
             this._geometry.toLeftHanded();
+            return this;
         }
 
-        public _bind(subMesh: SubMesh, effect: Effect, fillMode: number): void {
+        public _bind(subMesh: SubMesh, effect: Effect, fillMode: number): Mesh {
             var engine = this.getScene().getEngine();
 
             // Wireframe
@@ -836,11 +873,12 @@
 
             // VBOs
             this._geometry._bind(effect, indexToBind);
+            return this;
         }
 
-        public _draw(subMesh: SubMesh, fillMode: number, instancesCount?: number): void {
+        public _draw(subMesh: SubMesh, fillMode: number, instancesCount?: number): Mesh {
             if (!this._geometry || !this._geometry.getVertexBuffers() || !this._geometry.getIndexBuffer()) {
-                return;
+                return this;
             }
 
             this.onBeforeDrawObservable.notifyObservers(this);
@@ -867,38 +905,47 @@
                         engine.draw(true, subMesh.indexStart, subMesh.indexCount, instancesCount);
                     }
             }
+            return this;
         }
 
         /**
          * Registers for this mesh a javascript function called just before the rendering process.
-         * This function is passed the current mesh and doesn't return anything.  
+         * This function is passed the current mesh.  
+         * Return the Mesh.  
          */
-        public registerBeforeRender(func: (mesh: AbstractMesh) => void): void {
+        public registerBeforeRender(func: (mesh: AbstractMesh) => void): Mesh {
             this.onBeforeRenderObservable.add(func);
+            return this;
         }
 
         /**
          * Disposes a previously registered javascript function called before the rendering.
-         * This function is passed the current mesh and doesn't return anything.  
+         * This function is passed the current mesh.  
+         * Returns the Mesh.  
          */
-        public unregisterBeforeRender(func: (mesh: AbstractMesh) => void): void {
+        public unregisterBeforeRender(func: (mesh: AbstractMesh) => void): Mesh {
             this.onBeforeRenderObservable.removeCallback(func);
+            return this;
         }
 
         /**
          * Registers for this mesh a javascript function called just after the rendering is complete.
-         * This function is passed the current mesh and doesn't return anything.  
+         * This function is passed the current mesh.  
+         * Returns the Mesh.  
          */
-        public registerAfterRender(func: (mesh: AbstractMesh) => void): void {
+        public registerAfterRender(func: (mesh: AbstractMesh) => void): Mesh {
             this.onAfterRenderObservable.add(func);
+            return this;
         }
 
         /**
          * Disposes a previously registered javascript function called after the rendering.
-         * This function is passed the current mesh and doesn't return anything.  
+         * This function is passed the current mesh.  
+         * Return the Mesh.  
          */
-        public unregisterAfterRender(func: (mesh: AbstractMesh) => void): void {
+        public unregisterAfterRender(func: (mesh: AbstractMesh) => void): Mesh {
             this.onAfterRenderObservable.removeCallback(func);
+            return this;
         }
 
         public _getInstancesRenderList(subMeshId: number): _InstancesBatch {
@@ -936,7 +983,7 @@
             return this._batchCache;
         }
 
-        public _renderWithInstances(subMesh: SubMesh, fillMode: number, batch: _InstancesBatch, effect: Effect, engine: Engine): void {
+        public _renderWithInstances(subMesh: SubMesh, fillMode: number, batch: _InstancesBatch, effect: Effect, engine: Engine): Mesh {
             var visibleInstances = batch.visibleInstances[subMesh._id];
             var matricesCount = visibleInstances.length + 1;
             var bufferSize = matricesCount * 16 * 4;
@@ -992,10 +1039,11 @@
             this._draw(subMesh, fillMode, instancesCount);
 
             engine.unbindInstanceAttributes();
+            return this;
         }
 
         public _processRendering(subMesh: SubMesh, effect: Effect, fillMode: number, batch: _InstancesBatch, hardwareInstancedRendering: boolean,
-            onBeforeDraw: (isInstance: boolean, world: Matrix, effectiveMaterial?: Material) => void, effectiveMaterial?: Material) {
+            onBeforeDraw: (isInstance: boolean, world: Matrix, effectiveMaterial?: Material) => void, effectiveMaterial?: Material): Mesh {
             var scene = this.getScene();
             var engine = scene.getEngine();
 
@@ -1026,25 +1074,27 @@
                     }
                 }
             }
+            return this;
         }
 
         /**
          * Triggers the draw call for the mesh.
-         * Usually, you don't need to call this method by your own because the mesh rendering is handled by the scene rendering manager.  
+         * Usually, you don't need to call this method by your own because the mesh rendering is handled by the scene rendering manager.   
+         * Returns the Mesh.   
          */
-        public render(subMesh: SubMesh, enableAlphaMode: boolean): void {
+        public render(subMesh: SubMesh, enableAlphaMode: boolean): Mesh {
             var scene = this.getScene();
 
             // Managing instances
             var batch = this._getInstancesRenderList(subMesh._id);
 
             if (batch.mustReturn) {
-                return;
+                return this;
             }
 
             // Checking geometry state
             if (!this._geometry || !this._geometry.getVertexBuffers() || !this._geometry.getIndexBuffer()) {
-                return;
+                return this;
             }
 
             var callbackIndex: number;
@@ -1057,7 +1107,7 @@
             var effectiveMaterial = subMesh.getMaterial();
 
             if (!effectiveMaterial || !effectiveMaterial.isReady(this, hardwareInstancedRendering)) {
-                return;
+                return this;
             }
 
             // Outline - step 1
@@ -1107,12 +1157,14 @@
             }
 
             this.onAfterRenderObservable.notifyObservers(this);
+            return this;
         }
 
-        private _onBeforeDraw(isInstance: boolean, world: Matrix, effectiveMaterial: Material): void {
+        private _onBeforeDraw(isInstance: boolean, world: Matrix, effectiveMaterial: Material): Mesh {
             if (isInstance) {
                 effectiveMaterial.bindOnlyWorldMatrix(world);
             }
+            return this;
         }
 
         /**
@@ -1126,7 +1178,6 @@
                     results.push(particleSystem);
                 }
             }
-
             return results;
         }
 
@@ -1148,9 +1199,8 @@
             return results;
         }
 
-        public _checkDelayState(): void {
+        public _checkDelayState(): Mesh {
             var scene = this.getScene();
-
             if (this._geometry) {
                 this._geometry.load(scene);
             }
@@ -1159,9 +1209,10 @@
 
                 this._queueLoad(this, scene);
             }
+            return this;
         }
 
-        private _queueLoad(mesh: Mesh, scene: Scene): void {
+        private _queueLoad(mesh: Mesh, scene: Scene): Mesh {
             scene._addPendingData(mesh);
 
             var getBinaryData = (this.delayLoadingFile.indexOf(".babylonbinarymeshdata") !== -1);
@@ -1178,6 +1229,7 @@
                 this.delayLoadState = Engine.DELAYLOADSTATE_LOADED;
                 scene._removePendingData(this);
             }, () => { }, scene.database, getBinaryData);
+            return this;
         }
 
         /**
@@ -1200,15 +1252,15 @@
         /**
          * Sets the mesh material by the material or multiMaterial `id` property.  
          * The material `id` is a string identifying the material or the multiMaterial.  
-         * This method returns nothing. 
+         * This method returns the Mesh. 
          */
-        public setMaterialByID(id: string): void {
+        public setMaterialByID(id: string): Mesh {
             var materials = this.getScene().materials;
             var index: number;
             for (index = 0; index < materials.length; index++) {
                 if (materials[index].id === id) {
                     this.material = materials[index];
-                    return;
+                    return this;
                 }
             }
 
@@ -1217,9 +1269,10 @@
             for (index = 0; index < multiMaterials.length; index++) {
                 if (multiMaterials[index].id === id) {
                     this.material = multiMaterials[index];
-                    return;
+                    return this;
                 }
             }
+            return this;
         }
 
         /**
@@ -1245,11 +1298,12 @@
          * The mesh normals are modified accordingly the same transformation.  
          * tuto : http://doc.babylonjs.com/tutorials/How_Rotations_and_Translations_Work#baking-transform  
          * Note that, under the hood, this method sets a new VertexBuffer each call.  
+         * Returns the Mesh.  
          */
-        public bakeTransformIntoVertices(transform: Matrix): void {
+        public bakeTransformIntoVertices(transform: Matrix): Mesh {
             // Position
             if (!this.isVerticesDataPresent(VertexBuffer.PositionKind)) {
-                return;
+                return this;
             }
 
             var submeshes = this.subMeshes.splice(0);
@@ -1267,7 +1321,7 @@
 
             // Normals
             if (!this.isVerticesDataPresent(VertexBuffer.NormalKind)) {
-                return;
+                return this;
             }
             data = this.getVerticesData(VertexBuffer.NormalKind);
             temp = [];
@@ -1282,6 +1336,7 @@
             // Restore submeshes
             this.releaseSubMeshes();
             this.subMeshes = submeshes;
+            return this;
         }
 
         /**
@@ -1289,9 +1344,10 @@
          * The mesh World Matrix is then reset.
          * This method returns nothing but really modifies the mesh even if it's originally not set as updatable.
          * tuto : tuto : http://doc.babylonjs.com/tutorials/How_Rotations_and_Translations_Work#baking-transform 
-         * Note that, under the hood, this method sets a new VertexBuffer each call.
+         * Note that, under the hood, this method sets a new VertexBuffer each call.   
+         * Returns the Mesh.  
          */
-        public bakeCurrentTransformIntoVertices(): void {
+        public bakeCurrentTransformIntoVertices(): Mesh {
             this.bakeTransformIntoVertices(this.computeWorldMatrix(true));
             this.scaling.copyFromFloats(1, 1, 1);
             this.position.copyFromFloats(0, 0, 0);
@@ -1301,11 +1357,13 @@
                 this.rotationQuaternion = Quaternion.Identity();
             }
             this._worldMatrix = Matrix.Identity();
+            return this;
         }
 
         // Cache
-        public _resetPointsArrayCache(): void {
+        public _resetPointsArrayCache(): Mesh {
             this._positions = null;
+            return this;
         }
 
         public _generatePointsArray(): boolean {
@@ -1388,9 +1446,11 @@
          * The parameters `minHeight` and `maxHeight` are the lower and upper limits of the displacement.
          * The parameter `onSuccess` is an optional Javascript function to be called just after the mesh is modified. It is passed the modified mesh and must return nothing.
          * The parameter `uvOffset` is an optional vector2 used to offset UV.
-         * The parameter `uvScale` is an optional vector2 used to scale UV.
+         * The parameter `uvScale` is an optional vector2 used to scale UV.  
+         * 
+         * Returns the Mesh.  
          */
-        public applyDisplacementMap(url: string, minHeight: number, maxHeight: number, onSuccess?: (mesh: Mesh) => void, uvOffset?: Vector2, uvScale?: Vector2): void {
+        public applyDisplacementMap(url: string, minHeight: number, maxHeight: number, onSuccess?: (mesh: Mesh) => void, uvOffset?: Vector2, uvScale?: Vector2): Mesh {
             var scene = this.getScene();
 
             var onload = img => {
@@ -1416,6 +1476,7 @@
             };
 
             Tools.LoadImage(url, onload, () => { }, scene.database);
+            return this;
         }
 
         /**
@@ -1427,14 +1488,16 @@
          * The parameters `heightMapWidth` and `heightMapHeight` are positive integers to set the width and height of the buffer image.     
          * The parameters `minHeight` and `maxHeight` are the lower and upper limits of the displacement.
          * The parameter `uvOffset` is an optional vector2 used to offset UV.
-         * The parameter `uvScale` is an optional vector2 used to scale UV.
+         * The parameter `uvScale` is an optional vector2 used to scale UV.  
+         * 
+         * Returns the Mesh.  
          */
-        public applyDisplacementMapFromBuffer(buffer: Uint8Array, heightMapWidth: number, heightMapHeight: number, minHeight: number, maxHeight: number, uvOffset?: Vector2, uvScale?: Vector2): void {
+        public applyDisplacementMapFromBuffer(buffer: Uint8Array, heightMapWidth: number, heightMapHeight: number, minHeight: number, maxHeight: number, uvOffset?: Vector2, uvScale?: Vector2): Mesh {
             if (!this.isVerticesDataPresent(VertexBuffer.PositionKind)
                 || !this.isVerticesDataPresent(VertexBuffer.NormalKind)
                 || !this.isVerticesDataPresent(VertexBuffer.UVKind)) {
                 Tools.Warn("Cannot call applyDisplacementMap: Given mesh is not complete. Position, Normal or UV are missing");
-                return;
+                return this;
             }
 
             var positions = this.getVerticesData(VertexBuffer.PositionKind);
@@ -1474,15 +1537,16 @@
 
             this.updateVerticesData(VertexBuffer.PositionKind, positions);
             this.updateVerticesData(VertexBuffer.NormalKind, normals);
+            return this;
         }
 
         /**
          * Modify the mesh to get a flat shading rendering.
          * This means each mesh facet will then have its own normals. Usually new vertices are added in the mesh geometry to get this result.
-         * This method returns nothing.
+         * This method returns the Mesh.   
          * Warning : the mesh is really modified even if not set originally as updatable and, under the hood, a new VertexBuffer is allocated.
          */
-        public convertToFlatShadedMesh(): void {
+        public convertToFlatShadedMesh(): Mesh {
             /// <summary>Update normals and vertices to get a flat shading rendering.</summary>
             /// <summary>Warning: This may imply adding vertices to the mesh in order to get exactly 3 vertices per face</summary>
 
@@ -1572,16 +1636,16 @@
             }
 
             this.synchronizeInstances();
+            return this;
         }
 
         /**
          * This method removes all the mesh indices and add new vertices (duplication) in order to unfold facets into buffers.
          * In other words, more vertices, no more indices and a single bigger VBO.
-         * This method returns nothing.
-         * The mesh is really modified even if not set originally as updatable. Under the hood, a new VertexBuffer is allocated.
-         * 
+         * The mesh is really modified even if not set originally as updatable. Under the hood, a new VertexBuffer is allocated.  
+         * Returns the Mesh.  
          */
-        public convertToUnIndexedMesh(): void {
+        public convertToUnIndexedMesh(): Mesh {
             /// <summary>Remove indices by unfolding faces into buffers</summary>
             /// <summary>Warning: This implies adding vertices to the mesh in order to get exactly 3 vertices per face</summary>
 
@@ -1646,14 +1710,15 @@
             this._unIndexed = true;
 
             this.synchronizeInstances();
+            return this;
         }
 
         /**
          * Inverses facet orientations and inverts also the normals with `flipNormals` (default `false`) if true.
-         * This method returns nothing.
+         * This method returns the Mesh.
          * Warning : the mesh is really modified even if not set originally as updatable. A new VertexBuffer is created under the hood each call.
          */
-        public flipFaces(flipNormals: boolean = false): void {
+        public flipFaces(flipNormals: boolean = false): Mesh {
             var vertex_data = VertexData.ExtractFromMesh(this);
             var i: number;
             if (flipNormals && this.isVerticesDataPresent(VertexBuffer.NormalKind)) {
@@ -1671,6 +1736,7 @@
             }
 
             vertex_data.applyToMesh(this);
+            return this;
         }
 
         // Instances
@@ -1693,24 +1759,25 @@
         /**
          * Synchronises all the mesh instance submeshes to the current mesh submeshes, if any.
          * After this call, all the mesh instances have the same submeshes than the current mesh.
-         * This method returns nothing.   
+         * This method returns the Mesh.   
          */
-        public synchronizeInstances(): void {
+        public synchronizeInstances(): Mesh {
             for (var instanceIndex = 0; instanceIndex < this.instances.length; instanceIndex++) {
                 var instance = this.instances[instanceIndex];
                 instance._syncSubMeshes();
             }
+            return this;
         }
 
         /**
          * Simplify the mesh according to the given array of settings.
-         * Function will return immediately and will simplify async. It returns nothing.  
+         * Function will return immediately and will simplify async. It returns the Mesh.  
          * @param settings a collection of simplification settings.
          * @param parallelProcessing should all levels calculate parallel or one after the other.
          * @param type the type of simplification to run.
          * @param successCallback optional success callback to be called after the simplification finished processing all settings.
          */
-        public simplify(settings: Array<ISimplificationSettings>, parallelProcessing: boolean = true, simplificationType: SimplificationType = SimplificationType.QUADRATIC, successCallback?: (mesh?: Mesh, submeshIndex?: number) => void) {
+        public simplify(settings: Array<ISimplificationSettings>, parallelProcessing: boolean = true, simplificationType: SimplificationType = SimplificationType.QUADRATIC, successCallback?: (mesh?: Mesh, submeshIndex?: number) => void): Mesh {
             this.getScene().simplificationQueue.addTask({
                 settings: settings,
                 parallelProcessing: parallelProcessing,
@@ -1718,15 +1785,17 @@
                 simplificationType: simplificationType,
                 successCallback: successCallback
             });
+            return this;
         }
 
         /**
          * Optimization of the mesh's indices, in case a mesh has duplicated vertices.   
          * The function will only reorder the indices and will not remove unused vertices to avoid problems with submeshes.   
-         * This should be used together with the simplification to avoid disappearing triangles.   
+         * This should be used together with the simplification to avoid disappearing triangles.  
+         * Returns the Mesh.   
          * @param successCallback an optional success callback to be called after the optimization finished.   
          */
-        public optimizeIndices(successCallback?: (mesh?: Mesh) => void) {
+        public optimizeIndices(successCallback?: (mesh?: Mesh) => void): Mesh {
             var indices = this.getIndices();
             var positions = this.getVerticesData(VertexBuffer.PositionKind);
             var vectorPositions = [];
@@ -1758,6 +1827,7 @@
                     successCallback(this);
                 }
             });
+            return this;
         }
 
         // Statics
@@ -2532,16 +2602,18 @@
         }
 
         /**
-         * Update the vertex buffers by applying transformation from the bones
+         * Updates the vertex buffer by applying transformation from the bones.  
+         * Returns the Mesh.  
+         * 
          * @param {skeleton} skeleton to apply
          */
         public applySkeleton(skeleton: Skeleton): Mesh {
             if (!this.geometry) {
-                return;
+                return this;
             }
 
             if (this.geometry._softwareSkinningRenderId == this.getScene().getRenderId()) {
-                return;
+                return this;
             }
 
             this.geometry._softwareSkinningRenderId = this.getScene().getRenderId();
@@ -2730,4 +2802,4 @@
             return meshSubclass;
         }
     }
-}
+}

src/Mesh/babylon.mesh.vertexData.ts

@@ -71,23 +71,45 @@
             }
         }
 
-        public applyToMesh(mesh: Mesh, updatable?: boolean): void {
+        /**
+         * Associates the vertexData to the passed Mesh.  
+         * Sets it as updatable or not (default `false`).  
+         * Returns the VertexData.  
+         */
+        public applyToMesh(mesh: Mesh, updatable?: boolean): VertexData {
             this._applyTo(mesh, updatable);
+            return this;
         }
 
-        public applyToGeometry(geometry: Geometry, updatable?: boolean): void {
+        /**
+         * Associates the vertexData to the passed Geometry.  
+         * Sets it as updatable or not (default `false`).  
+         * Returns the VertexData.  
+         */
+        public applyToGeometry(geometry: Geometry, updatable?: boolean): VertexData {
             this._applyTo(geometry, updatable);
+            return this;
         }
 
-        public updateMesh(mesh: Mesh, updateExtends?: boolean, makeItUnique?: boolean): void {
+        /**
+         * Updates the associated mesh.  
+         * Returns the VertexData.  
+         */
+        public updateMesh(mesh: Mesh, updateExtends?: boolean, makeItUnique?: boolean): VertexData {
             this._update(mesh);
+            return this;
         }
 
-        public updateGeometry(geometry: Geometry, updateExtends?: boolean, makeItUnique?: boolean): void {
+        /**
+         * Updates the associated geometry.  
+         * Returns the VertexData.  
+         */
+        public updateGeometry(geometry: Geometry, updateExtends?: boolean, makeItUnique?: boolean): VertexData {
             this._update(geometry);
+            return this;
         }
 
-        private _applyTo(meshOrGeometry: IGetSetVerticesData, updatable?: boolean) {
+        private _applyTo(meshOrGeometry: IGetSetVerticesData, updatable?: boolean): VertexData {
             if (this.positions) {
                 meshOrGeometry.setVerticesData(VertexBuffer.PositionKind, this.positions, updatable);
             }
@@ -143,9 +165,10 @@
             if (this.indices) {
                 meshOrGeometry.setIndices(this.indices);
             }
+            return this;
         }
 
-        private _update(meshOrGeometry: IGetSetVerticesData, updateExtends?: boolean, makeItUnique?: boolean) {
+        private _update(meshOrGeometry: IGetSetVerticesData, updateExtends?: boolean, makeItUnique?: boolean): VertexData {
             if (this.positions) {
                 meshOrGeometry.updateVerticesData(VertexBuffer.PositionKind, this.positions, updateExtends, makeItUnique);
             }
@@ -201,9 +224,14 @@
             if (this.indices) {
                 meshOrGeometry.setIndices(this.indices);
             }
+            return this;
         }
 
-        public transform(matrix: Matrix): void {
+        /**
+         * Transforms each position and each normal of the vertexData according to the passed Matrix.  
+         * Returns the VertexData.  
+         */
+        public transform(matrix: Matrix): VertexData {
             var transformed = Vector3.Zero();
             var index: number;
             if (this.positions) {
@@ -231,9 +259,14 @@
                     this.normals[index + 2] = transformed.z;
                 }
             }
+            return this;
         }
 
-        public merge(other: VertexData): void {
+        /**
+         * Merges the passed VertexData into the current one.  
+         * Returns the modified VertexData.  
+         */
+        public merge(other: VertexData): VertexData {
             if (other.indices) {
                 if (!this.indices) {
                     this.indices = [];
@@ -259,6 +292,7 @@
             this.matricesWeights = this._mergeElement(this.matricesWeights, other.matricesWeights);
             this.matricesIndicesExtra = this._mergeElement(this.matricesIndicesExtra, other.matricesIndicesExtra);
             this.matricesWeightsExtra = this._mergeElement(this.matricesWeightsExtra, other.matricesWeightsExtra);
+            return this;
         }
 
         private _mergeElement(source: number[] | Float32Array, other: number[] | Float32Array): number[] | Float32Array {
@@ -290,6 +324,10 @@
             }
         }
 
+        /**
+         * Serializes the VertexData.  
+         * Returns a serialized object.  
+         */
         public serialize(): any {
             var serializationObject = this.serialize();
 
@@ -353,10 +391,16 @@
         }
 
         // Statics
+        /**
+         * Returns the object VertexData associated to the passed mesh.  
+         */
         public static ExtractFromMesh(mesh: Mesh, copyWhenShared?: boolean): VertexData {
             return VertexData._ExtractFrom(mesh, copyWhenShared);
         }
 
+        /**
+         * Returns the object VertexData associated to the passed geometry.  
+         */
         public static ExtractFromGeometry(geometry: Geometry, copyWhenShared?: boolean): VertexData {
             return VertexData._ExtractFrom(geometry, copyWhenShared);
         }
@@ -421,6 +465,9 @@
             return result;
         }
 
+        /**
+         * Creates the vertexData of the Ribbon.  
+         */
         public static CreateRibbon(options: { pathArray: Vector3[][], closeArray?: boolean, closePath?: boolean, offset?: number, sideOrientation?: number, invertUV?: boolean }): VertexData {
             var pathArray: Vector3[][] = options.pathArray;
             var closeArray: boolean = options.closeArray || false;
@@ -624,6 +671,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Box.  
+         */
         public static CreateBox(options: { size?: number, width?: number, height?: number, depth?: number, faceUV?: Vector4[], faceColors?: Color4[], sideOrientation?: number }): VertexData {
             var normalsSource = [
                 new Vector3(0, 0, 1),
@@ -730,6 +780,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Sphere.  
+         */
         public static CreateSphere(options: { segments?: number, diameter?: number, diameterX?: number, diameterY?: number, diameterZ?: number, arc?: number, slice?: number, sideOrientation?: number }): VertexData {
             var segments: number = options.segments || 32;
             var diameterX: number = options.diameterX || options.diameter || 1;
@@ -799,7 +852,9 @@
             return vertexData;
         }
 
-        // Cylinder and cone
+        /**
+         * Creates the VertexData of the Cylinder or Cone.  
+         */
         public static CreateCylinder(options: { height?: number, diameterTop?: number, diameterBottom?: number, diameter?: number, tessellation?: number, subdivisions?: number, arc?: number, faceColors?: Color4[], faceUV?: Vector4[], hasRings?: boolean, enclose?: boolean, sideOrientation?: number }): VertexData {
             var height: number = options.height || 2;
             var diameterTop: number = (options.diameterTop === 0) ? 0 : options.diameterTop || options.diameter || 1;
@@ -1047,6 +1102,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Torus.  
+         */
         public static CreateTorus(options: { diameter?: number, thickness?: number, tessellation?: number, sideOrientation?: number }) {
             var indices = [];
             var positions = [];
@@ -1115,6 +1173,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the LineSystem.  
+         */
         public static CreateLineSystem(options: { lines: Vector3[][] }): VertexData {
             var indices = [];
             var positions = [];
@@ -1139,6 +1200,9 @@
             return vertexData;
         }
 
+        /**
+         * Create the VertexData of the DashedLines.  
+         */
         public static CreateDashedLines(options: { points: Vector3[], dashSize?: number, gapSize?: number, dashNb?: number }): VertexData {
             var dashSize = options.dashSize || 3;
             var gapSize = options.gapSize || 1;
@@ -1183,6 +1247,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Ground.  
+         */
         public static CreateGround(options: { width?: number, height?: number, subdivisions?: number, subdivisionsX?: number, subdivisionsY?: number }): VertexData {
             var indices = [];
             var positions = [];
@@ -1229,6 +1296,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the TiledGround.  
+         */
         public static CreateTiledGround(options: { xmin: number, zmin: number, xmax: number, zmax: number, subdivisions?: { w: number; h: number; }, precision?: { w: number; h: number; } }): VertexData {
             var xmin = options.xmin || -1.0;
             var zmin = options.zmin || -1.0;
@@ -1313,6 +1383,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Ground designed from a heightmap.  
+         */
         public static CreateGroundFromHeightMap(options: { width: number, height: number, subdivisions: number, minHeight: number, maxHeight: number, buffer: Uint8Array, bufferWidth: number, bufferHeight: number }): VertexData {
             var indices = [];
             var positions = [];
@@ -1372,6 +1445,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Plane.  
+         */
         public static CreatePlane(options: { size?: number, width?: number, height?: number, sideOrientation?: number }): VertexData {
             var indices = [];
             var positions = [];
@@ -1425,6 +1501,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the Disc or regular Polygon.  
+         */
         public static CreateDisc(options: { radius?: number, tessellation?: number, arc?: number, sideOrientation?: number }): VertexData {
             var positions = [];
             var indices = [];
@@ -1475,6 +1554,9 @@
             return vertexData;
         }
 
+        /**
+         * Creates the VertexData of the IcoSphere.  
+         */
         public static CreateIcoSphere(options: { radius?: number, radiusX?: number, radiusY?: number, radiusZ?: number, flat?: boolean, subdivisions?: number, sideOrientation?: number }): VertexData {
             var sideOrientation = options.sideOrientation || Mesh.DEFAULTSIDE;
             var radius = options.radius || 1;
@@ -1736,6 +1818,9 @@
 
 
         // inspired from // http://stemkoski.github.io/Three.js/Polyhedra.html
+        /**
+         * Creates the VertexData of the Polyhedron.  
+         */
         public static CreatePolyhedron(options: { type?: number, size?: number, sizeX?: number, sizeY?: number, sizeZ?: number, custom?: any, faceUV?: Vector4[], faceColors?: Color4[], flat?: boolean, sideOrientation?: number }): VertexData {
             // provided polyhedron types :
             // 0 : Tetrahedron, 1 : Octahedron, 2 : Dodecahedron, 3 : Icosahedron, 4 : Rhombicuboctahedron, 5 : Triangular Prism, 6 : Pentagonal Prism, 7 : Hexagonal Prism, 8 : Square Pyramid (J1)
@@ -1868,6 +1953,9 @@
         }
 
         // based on http://code.google.com/p/away3d/source/browse/trunk/fp10/Away3D/src/away3d/primitives/TorusKnot.as?spec=svn2473&r=2473
+        /**
+         * Creates the VertexData of the Torus Knot.  
+         */
         public static CreateTorusKnot(options: { radius?: number, tube?: number, radialSegments?: number, tubularSegments?: number, p?: number, q?: number, sideOrientation?: number }): VertexData {
             var indices = [];
             var positions = [];
@@ -2208,6 +2296,9 @@
             }
         }
 
+        /**
+         * Creates a new VertexData from the imported parameters.  
+         */
         public static ImportVertexData(parsedVertexData: any, geometry: Geometry) {
             var vertexData = new VertexData();
 
@@ -2287,4 +2378,3 @@
         }
     }
 }
-

src/Mesh/babylon.subMesh.ts

@@ -34,6 +34,9 @@
             return (this.verticesStart === 0 && this.verticesCount == this._mesh.getTotalVertices());
         }
 
+        /**
+         * Returns the submesh BoudingInfo object.  
+         */
         public getBoundingInfo(): BoundingInfo {
             if (this.IsGlobal) {
                 return this._mesh.getBoundingInfo();
@@ -42,18 +45,32 @@
             return this._boundingInfo;
         }
 
-        public setBoundingInfo(boundingInfo: BoundingInfo): void {
+        /**
+         * Sets the submesh BoundingInfo.  
+         * Return the SubMesh.  
+         */
+        public setBoundingInfo(boundingInfo: BoundingInfo): SubMesh {
             this._boundingInfo = boundingInfo;
+            return this;
         }
 
+        /** 
+         * Returns the mesh of the current submesh.  
+         */
         public getMesh(): AbstractMesh {
             return this._mesh;
         }
 
+        /**
+         * Returns the rendering mesh of the submesh.  
+         */
         public getRenderingMesh(): Mesh {
             return this._renderingMesh;
         }
 
+        /**
+         * Returns the submesh material.  
+         */
         public getMaterial(): Material {
             var rootMaterial = this._renderingMesh.material;
 
@@ -70,7 +87,11 @@
         }
 
         // Methods
-        public refreshBoundingInfo(): void {
+        /**
+         * Sets a new updated BoundingInfo object to the submesh.  
+         * Returns the SubMesh.  
+         */
+        public refreshBoundingInfo(): SubMesh {
             this._lastColliderWorldVertices = null;
 
             if (this.IsGlobal) {
@@ -94,31 +115,54 @@
                 extend = Tools.ExtractMinAndMaxIndexed(data, indices, this.indexStart, this.indexCount, this._renderingMesh.geometry.boundingBias);
             }
             this._boundingInfo = new BoundingInfo(extend.minimum, extend.maximum);
+            return this;
         }
 
         public _checkCollision(collider: Collider): boolean {
             return this.getBoundingInfo()._checkCollision(collider);
         }
 
-        public updateBoundingInfo(world: Matrix): void {
+        /**
+         * Updates the submesh BoundingInfo.  
+         * Returns the Submesh.  
+         */
+        public updateBoundingInfo(world: Matrix): SubMesh {
             if (!this.getBoundingInfo()) {
                 this.refreshBoundingInfo();
             }
             this.getBoundingInfo().update(world);
+            return this;
         }
 
+        /**
+         * True is the submesh bounding box intersects the frustum defined by the passed array of planes.  
+         * Boolean returned.  
+         */
         public isInFrustum(frustumPlanes: Plane[]): boolean {
             return this.getBoundingInfo().isInFrustum(frustumPlanes);
         }
 
+        /**
+         * True is the submesh bounding box is completely inside the frustum defined by the passed array of planes.  
+         * Boolean returned.  
+         */        
         public isCompletelyInFrustum(frustumPlanes: Plane[]): boolean {
             return this.getBoundingInfo().isCompletelyInFrustum(frustumPlanes);
         }
 
-        public render(enableAlphaMode: boolean): void {
+        /**
+         * Renders the submesh.  
+         * Returns it.  
+         */
+        public render(enableAlphaMode: boolean): SubMesh {
             this._renderingMesh.render(this, enableAlphaMode);
+            return this;
         }
 
+        /**
+         * Returns a new Index Buffer.  
+         * Type returned : WebGLBuffer.  
+         */
         public getLinesIndexBuffer(indices: IndicesArray, engine: Engine): WebGLBuffer {
             if (!this._linesIndexBuffer) {
                 var linesIndices = [];
@@ -135,10 +179,17 @@
             return this._linesIndexBuffer;
         }
 
+        /**
+         * True is the passed Ray intersects the submesh bounding box.  
+         * Boolean returned.  
+         */
         public canIntersects(ray: Ray): boolean {
             return ray.intersectsBox(this.getBoundingInfo().boundingBox);
         }
 
+        /**
+         * Returns an object IntersectionInfo.  
+         */
         public intersects(ray: Ray, positions: Vector3[], indices: IndicesArray, fastCheck?: boolean): IntersectionInfo {
             var intersectInfo: IntersectionInfo = null;
 
@@ -195,6 +246,9 @@
         }
 
         // Clone    
+        /**
+         * Creates a new Submesh from the passed Mesh.  
+         */
         public clone(newMesh: AbstractMesh, newRenderingMesh?: Mesh): SubMesh {
             var result = new SubMesh(this.materialIndex, this.verticesStart, this.verticesCount, this.indexStart, this.indexCount, newMesh, newRenderingMesh, false);
 
@@ -206,7 +260,11 @@
         }
 
         // Dispose
-        public dispose() {
+        /**
+         * Disposes the Submesh.  
+         * Returns nothing.  
+         */
+        public dispose(): void {
             if (this._linesIndexBuffer) {
                 this._mesh.getScene().getEngine()._releaseBuffer(this._linesIndexBuffer);
                 this._linesIndexBuffer = null;
@@ -218,6 +276,14 @@
         }
 
         // Statics
+        /**
+         * Creates a new Submesh from the passed parameters : 
+         * - materialIndex (integer) : the index of the main mesh material.  
+         * - startIndex (integer) : the index where to start the copy in the mesh indices array.  
+         * - indexCount (integer) : the number of indices to copy then from the startIndex.  
+         * - mesh (Mesh) : the main mesh to create the submesh from.  
+         * - renderingMesh (optional Mesh) : rendering mesh.  
+         */
         public static CreateFromIndices(materialIndex: number, startIndex: number, indexCount: number, mesh: AbstractMesh, renderingMesh?: Mesh): SubMesh {
             var minVertexIndex = Number.MAX_VALUE;
             var maxVertexIndex = -Number.MAX_VALUE;
@@ -238,4 +304,3 @@
         }
     }
 }
-

src/Mesh/babylon.vertexBuffer.ts

@@ -59,55 +59,92 @@
             this._kind = kind;
         }
 
-
+        /**
+         * Returns the kind of the VertexBuffer (string).  
+         */
         public getKind(): string {
             return this._kind;
         }
 
         // Properties
+        /**
+         * Boolean : is the VertexBuffer updatable ?
+         */
         public isUpdatable(): boolean {
             return this._buffer.isUpdatable();
         }
 
+        /**
+         * Returns an array of numbers or a Float32Array containing the VertexBuffer data.  
+         */
         public getData(): number[] | Float32Array {
             return this._buffer.getData();
         }
 
+        /**
+         * Returns the WebGLBuffer associated to the VertexBuffer.  
+         */
         public getBuffer(): WebGLBuffer {
             return this._buffer.getBuffer();
         }
 
+        /**
+         * Returns the stride of the VertexBuffer (integer).  
+         */
         public getStrideSize(): number {
             return this._stride;
         }
 
+        /**
+         * Returns the offset (integer).  
+         */
         public getOffset(): number {
             return this._offset;
         }
 
+        /**
+         * Returns the VertexBuffer total size (integer).  
+         */
         public getSize(): number {
             return this._size;
         }
 
+        /**
+         * Boolean : is the WebGLBuffer of the VertexBuffer instanced now ?
+         */
         public getIsInstanced(): boolean {
             return this._buffer.getIsInstanced();
         }
 
         // Methods
 
-
+        /**
+         * Creates the underlying WebGLBuffer from the passed numeric array or Float32Array.  
+         * Returns the created WebGLBuffer.   
+         */
         public create(data?: number[] | Float32Array): void {
             return this._buffer.create(data);
         }
 
+        /**
+         * Updates the underlying WebGLBuffer according to the passed numeric array or Float32Array.  
+         * Returns the updated WebGLBuffer.  
+         */
         public update(data: number[] | Float32Array): void {
             return this._buffer.update(data);
         }
 
+        /**
+         * Updates directly the underlying WebGLBuffer according to the passed numeric array or Float32Array.  
+         * Returns the directly updated WebGLBuffer. 
+         */
         public updateDirectly(data: Float32Array, offset: number): void {
             return this._buffer.updateDirectly(data, offset);
         }
 
+        /** 
+         * Disposes the VertexBuffer and the underlying WebGLBuffer.  
+         */
         public dispose(): void {
             if (this._ownsBuffer) {
                 this._buffer.dispose();