| /* |
| 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 |
| |
| #include "BulletCollision/CollisionShapes/btMultimaterialTriangleMeshShape.h" |
| #include "BulletCollision/CollisionShapes/btTriangleIndexVertexMaterialArray.h" |
| //#include "BulletCollision/CollisionShapes/btOptimizedBvh.h" |
| |
| |
| ///Obtains the material for a specific triangle |
| const btMaterial * btMultimaterialTriangleMeshShape::getMaterialProperties(int partID, int triIndex) |
| { |
| const unsigned char * materialBase = 0; |
| int numMaterials; |
| PHY_ScalarType materialType; |
| int materialStride; |
| const unsigned char * triangleMaterialBase = 0; |
| int numTriangles; |
| int triangleMaterialStride; |
| PHY_ScalarType triangleType; |
| |
| ((btTriangleIndexVertexMaterialArray*)m_meshInterface)->getLockedReadOnlyMaterialBase(&materialBase, numMaterials, materialType, materialStride, |
| &triangleMaterialBase, numTriangles, triangleMaterialStride, triangleType, partID); |
| |
| // return the pointer to the place with the friction for the triangle |
| // TODO: This depends on whether it's a moving mesh or not |
| // BUG IN GIMPACT |
| //return (btScalar*)(&materialBase[triangleMaterialBase[(triIndex-1) * triangleMaterialStride] * materialStride]); |
| int * matInd = (int *)(&(triangleMaterialBase[(triIndex * triangleMaterialStride)])); |
| btMaterial *matVal = (btMaterial *)(&(materialBase[*matInd * materialStride])); |
| return (matVal); |
| } |