mirror of https://github.com/axmolengine/axmol.git
381 lines
16 KiB
C++
381 lines
16 KiB
C++
/*
|
|
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.
|
|
*/
|
|
|
|
#include "btStridingMeshInterface.h"
|
|
#include "LinearMath/btSerializer.h"
|
|
|
|
btStridingMeshInterface::~btStridingMeshInterface()
|
|
{
|
|
}
|
|
|
|
void btStridingMeshInterface::InternalProcessAllTriangles(btInternalTriangleIndexCallback* callback, const btVector3& aabbMin, const btVector3& aabbMax) const
|
|
{
|
|
(void)aabbMin;
|
|
(void)aabbMax;
|
|
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];
|
|
|
|
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
|
|
|
|
///unlike that developers want to pass in double-precision meshes in single-precision Bullet build
|
|
///so disable this feature by default
|
|
///see patch http://code.google.com/p/bullet/issues/detail?id=213
|
|
|
|
switch (type)
|
|
{
|
|
case PHY_FLOAT:
|
|
{
|
|
float* graphicsbase;
|
|
|
|
switch (gfxindextype)
|
|
{
|
|
case PHY_INTEGER:
|
|
{
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned int* tri_indices = (unsigned 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++)
|
|
{
|
|
unsigned short int* tri_indices = (unsigned 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;
|
|
}
|
|
case PHY_UCHAR:
|
|
{
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned char* tri_indices = (unsigned char*)(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:
|
|
btAssert((gfxindextype == PHY_INTEGER) || (gfxindextype == PHY_SHORT));
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PHY_DOUBLE:
|
|
{
|
|
double* graphicsbase;
|
|
|
|
switch (gfxindextype)
|
|
{
|
|
case PHY_INTEGER:
|
|
{
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned int* tri_indices = (unsigned int*)(indexbase + gfxindex * indexstride);
|
|
graphicsbase = (double*)(vertexbase + tri_indices[0] * stride);
|
|
triangle[0].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[1] * stride);
|
|
triangle[1].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[2] * stride);
|
|
triangle[2].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
callback->internalProcessTriangleIndex(triangle, part, gfxindex);
|
|
}
|
|
break;
|
|
}
|
|
case PHY_SHORT:
|
|
{
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned short int* tri_indices = (unsigned short int*)(indexbase + gfxindex * indexstride);
|
|
graphicsbase = (double*)(vertexbase + tri_indices[0] * stride);
|
|
triangle[0].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[1] * stride);
|
|
triangle[1].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[2] * stride);
|
|
triangle[2].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
callback->internalProcessTriangleIndex(triangle, part, gfxindex);
|
|
}
|
|
break;
|
|
}
|
|
case PHY_UCHAR:
|
|
{
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned char* tri_indices = (unsigned char*)(indexbase + gfxindex * indexstride);
|
|
graphicsbase = (double*)(vertexbase + tri_indices[0] * stride);
|
|
triangle[0].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[1] * stride);
|
|
triangle[1].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
graphicsbase = (double*)(vertexbase + tri_indices[2] * stride);
|
|
triangle[2].setValue((btScalar)graphicsbase[0] * meshScaling.getX(), (btScalar)graphicsbase[1] * meshScaling.getY(), (btScalar)graphicsbase[2] * meshScaling.getZ());
|
|
callback->internalProcessTriangleIndex(triangle, part, gfxindex);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
btAssert((gfxindextype == PHY_INTEGER) || (gfxindextype == PHY_SHORT));
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
btAssert((type == PHY_FLOAT) || (type == PHY_DOUBLE));
|
|
}
|
|
|
|
unLockReadOnlyVertexBase(part);
|
|
}
|
|
}
|
|
|
|
void btStridingMeshInterface::calculateAabbBruteForce(btVector3& aabbMin, btVector3& aabbMax)
|
|
{
|
|
struct AabbCalculationCallback : public btInternalTriangleIndexCallback
|
|
{
|
|
btVector3 m_aabbMin;
|
|
btVector3 m_aabbMax;
|
|
|
|
AabbCalculationCallback()
|
|
{
|
|
m_aabbMin.setValue(btScalar(BT_LARGE_FLOAT), btScalar(BT_LARGE_FLOAT), btScalar(BT_LARGE_FLOAT));
|
|
m_aabbMax.setValue(btScalar(-BT_LARGE_FLOAT), btScalar(-BT_LARGE_FLOAT), btScalar(-BT_LARGE_FLOAT));
|
|
}
|
|
|
|
virtual void internalProcessTriangleIndex(btVector3* triangle, int partId, int triangleIndex)
|
|
{
|
|
(void)partId;
|
|
(void)triangleIndex;
|
|
|
|
m_aabbMin.setMin(triangle[0]);
|
|
m_aabbMax.setMax(triangle[0]);
|
|
m_aabbMin.setMin(triangle[1]);
|
|
m_aabbMax.setMax(triangle[1]);
|
|
m_aabbMin.setMin(triangle[2]);
|
|
m_aabbMax.setMax(triangle[2]);
|
|
}
|
|
};
|
|
|
|
//first calculate the total aabb for all triangles
|
|
AabbCalculationCallback aabbCallback;
|
|
aabbMin.setValue(btScalar(-BT_LARGE_FLOAT), btScalar(-BT_LARGE_FLOAT), btScalar(-BT_LARGE_FLOAT));
|
|
aabbMax.setValue(btScalar(BT_LARGE_FLOAT), btScalar(BT_LARGE_FLOAT), btScalar(BT_LARGE_FLOAT));
|
|
InternalProcessAllTriangles(&aabbCallback, aabbMin, aabbMax);
|
|
|
|
aabbMin = aabbCallback.m_aabbMin;
|
|
aabbMax = aabbCallback.m_aabbMax;
|
|
}
|
|
|
|
///fills the dataBuffer and returns the struct name (and 0 on failure)
|
|
const char* btStridingMeshInterface::serialize(void* dataBuffer, btSerializer* serializer) const
|
|
{
|
|
btStridingMeshInterfaceData* trimeshData = (btStridingMeshInterfaceData*)dataBuffer;
|
|
|
|
trimeshData->m_numMeshParts = getNumSubParts();
|
|
|
|
//void* uniquePtr = 0;
|
|
|
|
trimeshData->m_meshPartsPtr = 0;
|
|
|
|
if (trimeshData->m_numMeshParts)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btMeshPartData), trimeshData->m_numMeshParts);
|
|
btMeshPartData* memPtr = (btMeshPartData*)chunk->m_oldPtr;
|
|
trimeshData->m_meshPartsPtr = (btMeshPartData*)serializer->getUniquePointer(memPtr);
|
|
|
|
// 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];
|
|
|
|
// 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++, memPtr++)
|
|
{
|
|
getLockedReadOnlyVertexIndexBase(&vertexbase, numverts, type, stride, &indexbase, indexstride, numtriangles, gfxindextype, part);
|
|
memPtr->m_numTriangles = numtriangles; //indices = 3*numtriangles
|
|
memPtr->m_numVertices = numverts;
|
|
memPtr->m_indices16 = 0;
|
|
memPtr->m_indices32 = 0;
|
|
memPtr->m_3indices16 = 0;
|
|
memPtr->m_3indices8 = 0;
|
|
memPtr->m_vertices3f = 0;
|
|
memPtr->m_vertices3d = 0;
|
|
|
|
switch (gfxindextype)
|
|
{
|
|
case PHY_INTEGER:
|
|
{
|
|
int numindices = numtriangles * 3;
|
|
|
|
if (numindices)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btIntIndexData), numindices);
|
|
btIntIndexData* tmpIndices = (btIntIndexData*)chunk->m_oldPtr;
|
|
memPtr->m_indices32 = (btIntIndexData*)serializer->getUniquePointer(tmpIndices);
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned int* tri_indices = (unsigned int*)(indexbase + gfxindex * indexstride);
|
|
tmpIndices[gfxindex * 3].m_value = tri_indices[0];
|
|
tmpIndices[gfxindex * 3 + 1].m_value = tri_indices[1];
|
|
tmpIndices[gfxindex * 3 + 2].m_value = tri_indices[2];
|
|
}
|
|
serializer->finalizeChunk(chunk, "btIntIndexData", BT_ARRAY_CODE, (void*)chunk->m_oldPtr);
|
|
}
|
|
break;
|
|
}
|
|
case PHY_SHORT:
|
|
{
|
|
if (numtriangles)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btShortIntIndexTripletData), numtriangles);
|
|
btShortIntIndexTripletData* tmpIndices = (btShortIntIndexTripletData*)chunk->m_oldPtr;
|
|
memPtr->m_3indices16 = (btShortIntIndexTripletData*)serializer->getUniquePointer(tmpIndices);
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned short int* tri_indices = (unsigned short int*)(indexbase + gfxindex * indexstride);
|
|
tmpIndices[gfxindex].m_values[0] = tri_indices[0];
|
|
tmpIndices[gfxindex].m_values[1] = tri_indices[1];
|
|
tmpIndices[gfxindex].m_values[2] = tri_indices[2];
|
|
// Fill padding with zeros to appease msan.
|
|
tmpIndices[gfxindex].m_pad[0] = 0;
|
|
tmpIndices[gfxindex].m_pad[1] = 0;
|
|
}
|
|
serializer->finalizeChunk(chunk, "btShortIntIndexTripletData", BT_ARRAY_CODE, (void*)chunk->m_oldPtr);
|
|
}
|
|
break;
|
|
}
|
|
case PHY_UCHAR:
|
|
{
|
|
if (numtriangles)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btCharIndexTripletData), numtriangles);
|
|
btCharIndexTripletData* tmpIndices = (btCharIndexTripletData*)chunk->m_oldPtr;
|
|
memPtr->m_3indices8 = (btCharIndexTripletData*)serializer->getUniquePointer(tmpIndices);
|
|
for (gfxindex = 0; gfxindex < numtriangles; gfxindex++)
|
|
{
|
|
unsigned char* tri_indices = (unsigned char*)(indexbase + gfxindex * indexstride);
|
|
tmpIndices[gfxindex].m_values[0] = tri_indices[0];
|
|
tmpIndices[gfxindex].m_values[1] = tri_indices[1];
|
|
tmpIndices[gfxindex].m_values[2] = tri_indices[2];
|
|
// Fill padding with zeros to appease msan.
|
|
tmpIndices[gfxindex].m_pad = 0;
|
|
}
|
|
serializer->finalizeChunk(chunk, "btCharIndexTripletData", BT_ARRAY_CODE, (void*)chunk->m_oldPtr);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
btAssert(0);
|
|
//unknown index type
|
|
}
|
|
}
|
|
|
|
switch (type)
|
|
{
|
|
case PHY_FLOAT:
|
|
{
|
|
float* graphicsbase;
|
|
|
|
if (numverts)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btVector3FloatData), numverts);
|
|
btVector3FloatData* tmpVertices = (btVector3FloatData*)chunk->m_oldPtr;
|
|
memPtr->m_vertices3f = (btVector3FloatData*)serializer->getUniquePointer(tmpVertices);
|
|
for (int i = 0; i < numverts; i++)
|
|
{
|
|
graphicsbase = (float*)(vertexbase + i * stride);
|
|
tmpVertices[i].m_floats[0] = graphicsbase[0];
|
|
tmpVertices[i].m_floats[1] = graphicsbase[1];
|
|
tmpVertices[i].m_floats[2] = graphicsbase[2];
|
|
}
|
|
serializer->finalizeChunk(chunk, "btVector3FloatData", BT_ARRAY_CODE, (void*)chunk->m_oldPtr);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PHY_DOUBLE:
|
|
{
|
|
if (numverts)
|
|
{
|
|
btChunk* chunk = serializer->allocate(sizeof(btVector3DoubleData), numverts);
|
|
btVector3DoubleData* tmpVertices = (btVector3DoubleData*)chunk->m_oldPtr;
|
|
memPtr->m_vertices3d = (btVector3DoubleData*)serializer->getUniquePointer(tmpVertices);
|
|
for (int i = 0; i < numverts; i++)
|
|
{
|
|
double* graphicsbase = (double*)(vertexbase + i * stride); //for now convert to float, might leave it at double
|
|
tmpVertices[i].m_floats[0] = graphicsbase[0];
|
|
tmpVertices[i].m_floats[1] = graphicsbase[1];
|
|
tmpVertices[i].m_floats[2] = graphicsbase[2];
|
|
}
|
|
serializer->finalizeChunk(chunk, "btVector3DoubleData", BT_ARRAY_CODE, (void*)chunk->m_oldPtr);
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
btAssert((type == PHY_FLOAT) || (type == PHY_DOUBLE));
|
|
}
|
|
|
|
unLockReadOnlyVertexBase(part);
|
|
}
|
|
|
|
serializer->finalizeChunk(chunk, "btMeshPartData", BT_ARRAY_CODE, chunk->m_oldPtr);
|
|
}
|
|
|
|
// Fill padding with zeros to appease msan.
|
|
memset(trimeshData->m_padding, 0, sizeof(trimeshData->m_padding));
|
|
|
|
m_scaling.serializeFloat(trimeshData->m_scaling);
|
|
return "btStridingMeshInterfaceData";
|
|
}
|