added support for Uint32Array and Uint16Array based indices

src/Collisions/babylon.collider.ts

@@ -319,7 +319,7 @@
             }
         }
 
-        public _collide(trianglePlaneArray: Array<Plane>, pts: Vector3[], indices: number[] | Int32Array, indexStart: number, indexEnd: number, decal: number, hasMaterial: boolean): void {
+        public _collide(trianglePlaneArray: Array<Plane>, pts: Vector3[], indices: IndicesArray, indexStart: number, indexEnd: number, decal: number, hasMaterial: boolean): void {
             for (var i = indexStart; i < indexEnd; i += 3) {
                 var p1 = pts[indices[i] - decal];
                 var p2 = pts[indices[i + 1] - decal];

src/Collisions/babylon.collisionCoordinator.ts

@@ -47,7 +47,7 @@ module BABYLON {
     export interface SerializedGeometry {
         id: string;
         positions: Float32Array;
-        indices: Int32Array;
+        indices: Uint32Array;
         normals: Float32Array;
         //uvs?: Float32Array;
     }
@@ -181,7 +181,7 @@ module BABYLON {
                 id: geometry.id,
                 positions: new Float32Array(geometry.getVerticesData(VertexBuffer.PositionKind) || []),
                 normals: new Float32Array(geometry.getVerticesData(VertexBuffer.NormalKind) || []),
-                indices: new Int32Array(geometry.getIndices() || []),
+                indices: new Uint32Array(geometry.getIndices() || []),
                 //uvs: new Float32Array(geometry.getVerticesData(VertexBuffer.UVKind) || [])
             }
         }

src/Mesh/babylon.abstractMesh.ts

@@ -280,7 +280,7 @@
             return 0;
         }
 
-        public getIndices(): number[] | Int32Array {
+        public getIndices(): IndicesArray {
             return null;
         }
 

src/Mesh/babylon.geometry.ts

@@ -11,7 +11,7 @@
         private _engine: Engine;
         private _meshes: Mesh[];
         private _totalVertices = 0;
-        private _indices: number[] | Int32Array;
+        private _indices: IndicesArray;
         private _vertexBuffers: { [key: string]: VertexBuffer; };
         private _isDisposed = false;
         private _extend: { minimum: Vector3, maximum: Vector3 };
@@ -285,7 +285,7 @@
             return result;
         }
 
-        public setIndices(indices: number[] | Int32Array, totalVertices?: number): void {
+        public setIndices(indices: IndicesArray, totalVertices?: number): void {
             if (this._indexBuffer) {
                 this._engine._releaseBuffer(this._indexBuffer);
             }
@@ -315,7 +315,7 @@
             return this._indices.length;
         }
 
-        public getIndices(copyWhenShared?: boolean): number[] | Int32Array {
+        public getIndices(copyWhenShared?: boolean): IndicesArray {
             if (!this.isReady()) {
                 return null;
             }
@@ -981,7 +981,7 @@
                 super.setAllVerticesData(vertexData, false);
             }
 
-            public setVerticesData(kind: string, data: number[] | Int32Array | Float32Array, updatable?: boolean): void {
+            public setVerticesData(kind: string, data: number[] | Float32Array, updatable?: boolean): void {
                 if (!this._beingRegenerated) {
                     return;
                 }

src/Mesh/babylon.instancedMesh.ts

@@ -71,7 +71,7 @@
             return this._sourceMesh.isVerticesDataPresent(kind);
         }
 
-        public getIndices(): number[] | Int32Array {
+        public getIndices(): IndicesArray {
             return this._sourceMesh.getIndices();
         }
 

src/Mesh/babylon.mesh.ts

@@ -524,11 +524,11 @@
         }
 
         /**
-         * Returns an array of integers or a Int32Array populated with the mesh indices.  
+         * Returns an array of integers or a typed array (Int32Array, Uint32Array, Uint16Array) populated with the mesh indices.  
          * If the parameter `copyWhenShared` is true (default false) and and if the mesh geometry is shared among some other meshes, the returned array is a copy of the internal one.
          * Returns an empty array if the mesh has no geometry.
          */
-        public getIndices(copyWhenShared?: boolean): number[] | Int32Array {
+        public getIndices(copyWhenShared?: boolean): IndicesArray {
 
             if (!this._geometry) {
                 return [];
@@ -829,11 +829,11 @@
 
         /**
          * Sets the mesh indices.  
-         * Expects an array populated with integers or a Int32Array.
+         * 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.
          */
-        public setIndices(indices: number[] | Int32Array, totalVertices?: number): void {
+        public setIndices(indices: IndicesArray, totalVertices?: number): void {
             if (!this._geometry) {
                 var vertexData = new VertexData();
                 vertexData.indices = indices;

src/Mesh/babylon.mesh.vertexData.ts

@@ -1,11 +1,14 @@
 module BABYLON {
-    export interface IGetSetVerticesData {
+    export type IndicesArray = number[] | Int32Array | Uint32Array | Uint16Array;
+
+    export interface IGetSetVerticesData
+    {
         isVerticesDataPresent(kind: string): boolean;
-        getVerticesData(kind: string, copyWhenShared?: boolean): number[] | Int32Array | Float32Array;
-        getIndices(copyWhenShared?: boolean): number[] | Int32Array;
+        getVerticesData(kind: string, copyWhenShared?: boolean): number[] | Float32Array;
+        getIndices(copyWhenShared?: boolean): IndicesArray;
         setVerticesData(kind: string, data: number[] | Float32Array, updatable?: boolean): void;
         updateVerticesData(kind: string, data: number[] | Float32Array, updateExtends?: boolean, makeItUnique?: boolean): void;
-        setIndices(indices: number[] | Int32Array): void;
+        setIndices(indices: IndicesArray): void;
     }
 
     export class VertexData {
@@ -22,7 +25,7 @@
         public matricesWeights: number[] | Float32Array;
         public matricesIndicesExtra: number[] | Float32Array;
         public matricesWeightsExtra: number[] | Float32Array;
-        public indices: number[] | Int32Array;
+        public indices: IndicesArray;
 
         public set(data: number[] | Float32Array, kind: string) {
             switch (kind) {
@@ -238,7 +241,7 @@
 
                 var offset = this.positions ? this.positions.length / 3 : 0;
                 for (var index = 0; index < other.indices.length; index++) {
-                    //TODO check type - if Int32Array!
+                    //TODO check type - if Int32Array | Uint32Array | Uint16Array!
                     (<number[]>this.indices).push(other.indices[index] + offset);
                 }
             }

src/Mesh/babylon.meshBuilder.ts

@@ -1092,7 +1092,7 @@
                 for (var vIndex = 0; vIndex < faceVertices.length; vIndex++) {
                     var vertex = faceVertices[vIndex];
 
-                    //TODO check for Int32Array
+                    //TODO check for Int32Array | Uint32Array | Uint16Array
                     (<number[]>vertexData.indices).push(currentVertexDataIndex);
                     vertex.position.toArray(vertexData.positions, currentVertexDataIndex * 3);
                     vertex.normal.toArray(vertexData.normals, currentVertexDataIndex * 3);

src/Mesh/babylon.subMesh.ts

@@ -119,7 +119,7 @@
             this._renderingMesh.render(this, enableAlphaMode);
         }
 
-        public getLinesIndexBuffer(indices: number[] | Int32Array, engine: Engine): WebGLBuffer {
+        public getLinesIndexBuffer(indices: IndicesArray, engine: Engine): WebGLBuffer {
             if (!this._linesIndexBuffer) {
                 var linesIndices = [];
 
@@ -139,7 +139,7 @@
             return ray.intersectsBox(this.getBoundingInfo().boundingBox);
         }
 
-        public intersects(ray: Ray, positions: Vector3[], indices: number[] | Int32Array, fastCheck?: boolean): IntersectionInfo {
+        public intersects(ray: Ray, positions: Vector3[], indices: IndicesArray, fastCheck?: boolean): IntersectionInfo {
             var intersectInfo: IntersectionInfo = null;
 
             // LineMesh first as it's also a Mesh...

src/Physics/babylon.physicsImpostor.ts

@@ -17,7 +17,7 @@ module BABYLON {
         computeWorldMatrix?(force: boolean): void;
         getChildMeshes?(): Array<AbstractMesh>;
         getVerticesData?(kind: string): Array<number> | Float32Array;
-        getIndices?(): Array<number> | Int32Array;
+        getIndices?(): IndicesArray;
         getScene?(): Scene;
     }
 

src/Tools/babylon.tools.ts

@@ -135,7 +135,7 @@
             return "data:image/png;base64," + output;
         }
 
-        public static ExtractMinAndMaxIndexed(positions: number[] | Float32Array, indices: number[] | Int32Array, indexStart: number, indexCount: number, bias: Vector2 = null): { minimum: Vector3; maximum: Vector3 } {
+        public static ExtractMinAndMaxIndexed(positions: number[] | Float32Array, indices: IndicesArray, indexStart: number, indexCount: number, bias: Vector2 = null): { minimum: Vector3; maximum: Vector3 } {
             var minimum = new Vector3(Number.MAX_VALUE, Number.MAX_VALUE, Number.MAX_VALUE);
             var maximum = new Vector3(-Number.MAX_VALUE, -Number.MAX_VALUE, -Number.MAX_VALUE);
 

src/babylon.engine.ts

@@ -1308,7 +1308,7 @@
             this._cachedIndexBuffer = null;
         }
 
-        public createIndexBuffer(indices: number[] | Int32Array): WebGLBuffer {
+        public createIndexBuffer(indices: IndicesArray): WebGLBuffer {
             var vbo = this._gl.createBuffer();
             this.bindIndexBuffer(vbo);
 
@@ -1316,18 +1316,29 @@
             var arrayBuffer;
             var need32Bits = false;
 
-            if (this._caps.uintIndices) {
-
-                for (var index = 0; index < indices.length; index++) {
-                    if (indices[index] > 65535) {
+            if (indices instanceof Uint16Array) {
+                arrayBuffer = indices;
+            } else {
+                //check 32 bit support
+                if (this._caps.uintIndices) {
+                    if (indices instanceof Uint32Array) {
+                        arrayBuffer = indices;
                         need32Bits = true;
-                        break;
+                    } else {
+                        //number[] or Int32Array, check if 32 bit is necessary
+                        for (var index = 0; index < indices.length; index++) {
+                            if (indices[index] > 65535) {
+                                need32Bits = true;
+                                break;
+                            }
+                        }
+
+                        arrayBuffer = need32Bits ? new Uint32Array(indices) : new Uint16Array(indices);
                     }
+                } else {
+                    //no 32 bit support, force conversion to 16 bit (values greater 16 bit are lost)
+                    arrayBuffer = new Uint16Array(indices);
                 }
-
-                arrayBuffer = need32Bits ? new Uint32Array(indices) : new Uint16Array(indices);
-            } else {
-                arrayBuffer = new Uint16Array(indices);
             }
 
             this._gl.bufferData(this._gl.ELEMENT_ARRAY_BUFFER, arrayBuffer, this._gl.STATIC_DRAW);