LIB3MFMETHODIMP CCOMModelMeshObject::GetTriangleCount(_Out_ DWORD * pnTriangleCount)
{
try {
if (!pnTriangleCount)
throw CNMRException(NMR_ERROR_INVALIDPOINTER);
CMesh * pMesh = getMesh();
__NMRASSERT(pMesh);
*pnTriangleCount = pMesh->getFaceCount();
return handleSuccess();
}
catch (CNMRException & Exception) {
return handleNMRException(&Exception);
}
catch (...) {
return handleGenericException();
}
}
LIB3MFMETHODIMP CCOMModelMeshObject::GetTriangleIndices(_Out_ MODELMESHTRIANGLE * pIndices, _In_ DWORD nBufferSize, _Out_opt_ DWORD * pnTriangleCount)
{
UINT j, nIndex;
try {
if (!pIndices)
throw CNMRException(NMR_ERROR_INVALIDPOINTER);
CMesh * pMesh = getMesh();
__NMRASSERT(pMesh);
// Check Buffer size
UINT nFaceCount = pMesh->getFaceCount();
if (pnTriangleCount)
*pnTriangleCount = nFaceCount;
if (nBufferSize < nFaceCount)
throw CNMRException(NMR_ERROR_INVALIDBUFFERSIZE);
MODELMESHTRIANGLE * pTriangle = pIndices;
for (nIndex = 0; nIndex < nFaceCount; nIndex++) {
// retrieve node and return position
MESHFACE * pFace = pMesh->getFace(nIndex);
for (j = 0; j < 3; j++)
pTriangle->m_nIndices[j] = pFace->m_nodeindices[j];
pTriangle++;
}
return handleSuccess();
}
catch (CNMRException & Exception) {
return handleNMRException(&Exception);
}
catch (...) {
return handleGenericException();
}
}