Yes I know there is a similar topic but this one is different.
I have managed to load a mesh into PhysX. I know the mesh is fine, because i render it with directx at the same time, and yes it's triangulated, and dead simple (well my most recent one is). I have tried altering some of the code to change the order the vertices are in putted, i.e. shifting them forward and backward by one in the vector.
This for some reason created an identical mesh in PhysX (checked with remote debugger).
Here is the code i use.
std::vector<float> GetVertices(LPD3DXMESH g_pMesh)
{
std::vector<float> vertices;
DWORD stride = D3DXGetFVFVertexSize(g_pMesh->GetFVF());
BYTE* vbptr = NULL;
g_pMesh->LockVertexBuffer(0, (LPVOID*)&vbptr);
int ii = -1;
for(unsigned int i = 0; i < g_pMesh->GetNumVertices(); i++)
{
ii++;
D3DXVECTOR3* pos = (D3DXVECTOR3*)vbptr;
vertices.push_back(pos->x);
vertices.push_back(pos->y);
vertices.push_back(pos->z);
vbptr += stride;
}
g_pMesh->UnlockVertexBuffer();
return vertices;
}
std::vector<short> GetIndices(LPD3DXMESH g_pMesh)
{
//LPVOID* ppData;
DWORD stride = sizeof(short);
BYTE* ibptr = NULL;
short* indices = new short[(g_pMesh)->GetNumFaces() * 3];
std::vector<short> copy;
(g_pMesh)->LockIndexBuffer(0, (LPVOID*)&indices);
for(unsigned int i = 0; i < (g_pMesh)->GetNumFaces() * 3; i++)
{
copy.push_back(indices);
}
(g_pMesh)->UnlockIndexBuffer();
return copy;
}
NxActor* GenTriangleMesh(NxVec3 pos, std::vector<short> indices, std::vector<float> vertices )
{
int NumVerticies = vertices.size() / 3;
int NumTriangles = indices.size() / 3;
//Create pointer for vertices
NxVec3* verts = new NxVec3[NumVerticies];
int ii = -1;
for(int i = 0; i < NumVerticies; i++)
{
++ii;
verts.x = vertices[ii];
verts.y = vertices[++ii];
verts.z = vertices[++ii];
}
//Create pointer for indices
NxU16 *tris = new NxU16[indices.size()];
for(int i = indices.size() - 1; i >= 0; --i)
tris = i;
// Build physical model
NxTriangleMeshDesc TriMeshDesc;
TriMeshDesc.numVertices = NumVerticies;
TriMeshDesc.numTriangles = NumTriangles;
TriMeshDesc.pointStrideBytes = sizeof(NxVec3);
TriMeshDesc.triangleStrideBytes = 3*sizeof(NxU16);
TriMeshDesc.points = verts;
TriMeshDesc.triangles = tris;
TriMeshDesc.flags = NX_MF_16_BIT_INDICES ;//| NX_MF_FLIPNORMALS ;
NxTriangleMeshShapeDesc ShapeDesc;
NxInitCooking();
// Cooking from memory
MemoryWriteBuffer buf;
bool status = NxCookTriangleMesh(TriMeshDesc, buf);
ShapeDesc.meshData = gPhysicsSDK->createTriangleMesh(MemoryReadBuffer(buf.data));
NxActorDesc actorDesc;
actorDesc.shapes.pushBack(&ShapeDesc);
actorDesc.globalPose.t = pos;
NxActor* act = gScene->createActor(actorDesc);
delete[] verts;
delete[] tris;
return act;
}
Here are the images of the problem: The direct x ones show what it is like at render time and how the meshes should be, the PhysX remote Debugger shows otherwise.
As you can see triangles are missing top and bottom, it seems systematic but i don't know how to fix it.
Please provide me with some code to fix this or some examples as i have no idea what to do or where to start.
Thanks
JamesCobras
