| /* |
| Bullet Continuous Collision Detection and Physics Library |
| Copyright (c) 2003-2009 Erwin Coumans http://bulletphysics.org |
| |
| This software is provided 'as-is', without any express or implied warranty. |
| In no event will the authors be held liable for any damages arising from the use of this software. |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it freely, |
| subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| |
| /// This file was created by Alex Silverman |
| |
| #ifndef BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H |
| #define BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H |
| |
| #include "btBvhTriangleMeshShape.h" |
| #include "btMaterial.h" |
| |
| ///The BvhTriangleMaterialMeshShape extends the btBvhTriangleMeshShape. Its main contribution is the interface into a material array, which allows per-triangle friction and restitution. |
| ATTRIBUTE_ALIGNED16(class) btMultimaterialTriangleMeshShape : public btBvhTriangleMeshShape |
| { |
| btAlignedObjectArray <btMaterial*> m_materialList; |
| int ** m_triangleMaterials; |
| |
| public: |
| |
| BT_DECLARE_ALIGNED_ALLOCATOR(); |
| |
| btMultimaterialTriangleMeshShape(): btBvhTriangleMeshShape() {m_shapeType = MULTIMATERIAL_TRIANGLE_MESH_PROXYTYPE;} |
| btMultimaterialTriangleMeshShape(btStridingMeshInterface* meshInterface, bool useQuantizedAabbCompression, bool buildBvh = true): |
| btBvhTriangleMeshShape(meshInterface, useQuantizedAabbCompression, buildBvh) |
| { |
| m_shapeType = MULTIMATERIAL_TRIANGLE_MESH_PROXYTYPE; |
| |
| btVector3 m_triangle[3]; |
| const unsigned char *vertexbase; |
| int numverts; |
| PHY_ScalarType type; |
| int stride; |
| const unsigned char *indexbase; |
| int indexstride; |
| int numfaces; |
| PHY_ScalarType indicestype; |
| |
| //m_materialLookup = (int**)(btAlignedAlloc(sizeof(int*) * meshInterface->getNumSubParts(), 16)); |
| |
| for(int i = 0; i < meshInterface->getNumSubParts(); i++) |
| { |
| m_meshInterface->getLockedReadOnlyVertexIndexBase( |
| &vertexbase, |
| numverts, |
| type, |
| stride, |
| &indexbase, |
| indexstride, |
| numfaces, |
| indicestype, |
| i); |
| //m_materialLookup[i] = (int*)(btAlignedAlloc(sizeof(int) * numfaces, 16)); |
| } |
| } |
| |
| ///optionally pass in a larger bvh aabb, used for quantization. This allows for deformations within this aabb |
| btMultimaterialTriangleMeshShape(btStridingMeshInterface* meshInterface, bool useQuantizedAabbCompression,const btVector3& bvhAabbMin,const btVector3& bvhAabbMax, bool buildBvh = true): |
| btBvhTriangleMeshShape(meshInterface, useQuantizedAabbCompression, bvhAabbMin, bvhAabbMax, buildBvh) |
| { |
| m_shapeType = MULTIMATERIAL_TRIANGLE_MESH_PROXYTYPE; |
| |
| btVector3 m_triangle[3]; |
| const unsigned char *vertexbase; |
| int numverts; |
| PHY_ScalarType type; |
| int stride; |
| const unsigned char *indexbase; |
| int indexstride; |
| int numfaces; |
| PHY_ScalarType indicestype; |
| |
| //m_materialLookup = (int**)(btAlignedAlloc(sizeof(int*) * meshInterface->getNumSubParts(), 16)); |
| |
| for(int i = 0; i < meshInterface->getNumSubParts(); i++) |
| { |
| m_meshInterface->getLockedReadOnlyVertexIndexBase( |
| &vertexbase, |
| numverts, |
| type, |
| stride, |
| &indexbase, |
| indexstride, |
| numfaces, |
| indicestype, |
| i); |
| //m_materialLookup[i] = (int*)(btAlignedAlloc(sizeof(int) * numfaces * 2, 16)); |
| } |
| } |
| |
| virtual ~btMultimaterialTriangleMeshShape() |
| { |
| /* |
| for(int i = 0; i < m_meshInterface->getNumSubParts(); i++) |
| { |
| btAlignedFree(m_materialValues[i]); |
| m_materialLookup[i] = NULL; |
| } |
| btAlignedFree(m_materialValues); |
| m_materialLookup = NULL; |
| */ |
| } |
| //debugging |
| virtual const char* getName()const {return "MULTIMATERIALTRIANGLEMESH";} |
| |
| ///Obtains the material for a specific triangle |
| const btMaterial * getMaterialProperties(int partID, int triIndex); |
| |
| } |
| ; |
| |
| #endif //BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H |