diff options
Diffstat (limited to 'extern/bullet2/src/BulletCollision/CollisionShapes/btStridingMeshInterface.cpp')
| -rw-r--r-- | extern/bullet2/src/BulletCollision/CollisionShapes/btStridingMeshInterface.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/extern/bullet2/src/BulletCollision/CollisionShapes/btStridingMeshInterface.cpp b/extern/bullet2/src/BulletCollision/CollisionShapes/btStridingMeshInterface.cpp new file mode 100644 index 00000000000..f7507b29394 --- /dev/null +++ b/extern/bullet2/src/BulletCollision/CollisionShapes/btStridingMeshInterface.cpp @@ -0,0 +1,85 @@ +/* +Bullet Continuous Collision Detection and Physics Library +Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ + +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. +*/ + +#include "btStridingMeshInterface.h" + +btStridingMeshInterface::~btStridingMeshInterface() +{ + +} + + +void btStridingMeshInterface::InternalProcessAllTriangles(btInternalTriangleIndexCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const +{ + int numtotalphysicsverts = 0; + int part,graphicssubparts = getNumSubParts(); + const unsigned char * vertexbase; + const unsigned char * indexbase; + int indexstride; + PHY_ScalarType type; + PHY_ScalarType gfxindextype; + int stride,numverts,numtriangles; + int gfxindex; + btVector3 triangle[3]; + float* graphicsbase; + + btVector3 meshScaling = getScaling(); + + ///if the number of parts is big, the performance might drop due to the innerloop switch on indextype + for (part=0;part<graphicssubparts ;part++) + { + getLockedReadOnlyVertexIndexBase(&vertexbase,numverts,type,stride,&indexbase,indexstride,numtriangles,gfxindextype,part); + numtotalphysicsverts+=numtriangles*3; //upper bound + + switch (gfxindextype) + { + case PHY_INTEGER: + { + for (gfxindex=0;gfxindex<numtriangles;gfxindex++) + { + int* tri_indices= (int*)(indexbase+gfxindex*indexstride); + graphicsbase = (float*)(vertexbase+tri_indices[0]*stride); + triangle[0].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ()); + graphicsbase = (float*)(vertexbase+tri_indices[1]*stride); + triangle[1].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(), graphicsbase[2]*meshScaling.getZ()); + graphicsbase = (float*)(vertexbase+tri_indices[2]*stride); + triangle[2].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(), graphicsbase[2]*meshScaling.getZ()); + callback->internalProcessTriangleIndex(triangle,part,gfxindex); + } + break; + } + case PHY_SHORT: + { + for (gfxindex=0;gfxindex<numtriangles;gfxindex++) + { + short int* tri_indices= (short int*)(indexbase+gfxindex*indexstride); + graphicsbase = (float*)(vertexbase+tri_indices[0]*stride); + triangle[0].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ()); + graphicsbase = (float*)(vertexbase+tri_indices[1]*stride); + triangle[1].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(), graphicsbase[2]*meshScaling.getZ()); + graphicsbase = (float*)(vertexbase+tri_indices[2]*stride); + triangle[2].setValue(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(), graphicsbase[2]*meshScaling.getZ()); + callback->internalProcessTriangleIndex(triangle,part,gfxindex); + } + break; + } + default: + ASSERT((gfxindextype == PHY_INTEGER) || (gfxindextype == PHY_SHORT)); + } + + unLockReadOnlyVertexBase(part); + } +} + |