///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// compute polygons from given triangles. This is support function used in extensions. We do not accept triangles as an input for convex mesh desc.
bool ConvexMeshBuilder::computeHullPolygons(const PxU32& nbVerts,const PxVec3* verts, const PxU32& nbTriangles, const PxU32* triangles, PxAllocatorCallback& inAllocator,
PxU32& outNbVerts, PxVec3*& outVertices , PxU32& nbIndices, PxU32*& indices, PxU32& nbPolygons, PxHullPolygon*& polygons)
{
if(!hullBuilder.computeHullPolygons(nbVerts,verts,nbTriangles,triangles))
{
Ps::getFoundation().error(PxErrorCode::eINTERNAL_ERROR, __FILE__, __LINE__, "ConvexMeshBuilder::computeHullPolygons: compute convex hull polygons failed. Provided triangles dont form a convex hull.");
return false;
}
outNbVerts = hullBuilder.mHull->mNbHullVertices;
nbPolygons = hullBuilder.mHull->mNbPolygons;
outVertices = reinterpret_cast<PxVec3*>(inAllocator.allocate(outNbVerts*sizeof(PxVec3),"PxVec3",__FILE__,__LINE__));
PxMemCopy(outVertices,hullBuilder.mHullDataHullVertices,outNbVerts*sizeof(PxVec3));
nbIndices = 0;
for (PxU32 i = 0; i < nbPolygons; i++)
{
nbIndices += hullBuilder.mHullDataPolygons[i].mNbVerts;
}
indices = reinterpret_cast<PxU32*>(inAllocator.allocate(nbIndices*sizeof(PxU32),"PxU32",__FILE__,__LINE__));
for (PxU32 i = 0; i < nbIndices; i++)
{
indices[i] = hullBuilder.mHullDataVertexData8[i];
}
polygons = reinterpret_cast<PxHullPolygon*>(inAllocator.allocate(nbPolygons*sizeof(PxHullPolygon),"PxHullPolygon",__FILE__,__LINE__));
for (PxU32 i = 0; i < nbPolygons; i++)
{
const Gu::HullPolygonData& polygonData = hullBuilder.mHullDataPolygons[i];
PxHullPolygon& outPolygon = polygons[i];
outPolygon.mPlane[0] = polygonData.mPlane.n.x;
outPolygon.mPlane[1] = polygonData.mPlane.n.y;
outPolygon.mPlane[2] = polygonData.mPlane.n.z;
outPolygon.mPlane[3] = polygonData.mPlane.d;
outPolygon.mNbVerts = polygonData.mNbVerts;
outPolygon.mIndexBase = polygonData.mVRef8;
for (PxU32 j = 0; j < polygonData.mNbVerts; j++)
{
PX_ASSERT(indices[outPolygon.mIndexBase + j] == hullBuilder.mHullDataVertexData8[polygonData.mVRef8+j]);
}
}
return true;
}
void reserve()
{
if (count+1 > capacity)
{
PxU32 oldCapacity = capacity;
capacity = NextPowerOfTwo(capacity+1);
Controller **newData = (Controller**)mAllocator->allocate(capacity*sizeof(Controller*), 0, __FILE__, __LINE__);
Ps::memCopy(newData,data,oldCapacity*sizeof(Controller*));
if(data)
mAllocator->deallocate(data);
data = newData;
}
}