void MeshImporter::print_index_list(COLLADAFW::IndexList& index_list)
{
fprintf(stderr, "Index list for \"%s\":\n", index_list.getName().c_str());
for (int i = 0; i < index_list.getIndicesCount(); i += 2) {
fprintf(stderr, "%u, %u\n", index_list.getIndex(i), index_list.getIndex(i + 1));
}
fprintf(stderr, "\n");
}
void MeshImporter::set_vcol(MLoopCol *mlc, VCOLDataWrapper &vob, int loop_index, COLLADAFW::IndexList &index_list, int count)
{
int index;
for (index = 0; index < count; index++, mlc++) {
int v_index = index_list.getIndex(index + loop_index);
vob.get_vcol(v_index,mlc);
}
}
void MeshImporter::set_vcol(MLoopCol *mlc, VCOLDataWrapper &vob, int loop_index, COLLADAFW::IndexList &index_list, int count)
{
COLLADAFW::UIntValuesArray& indices =index_list.getIndices();
int index;
for(index = 0; index < count; index++,mlc++)
{
int v_index = indices[index+loop_index];
vob.get_vcol(v_index,mlc);
}
}
void MeshImporter::set_face_uv(MLoopUV *mloopuv, UVDataWrapper &uvs,
int start_index, COLLADAFW::IndexList& index_list, int count)
{
// per face vertex indices, this means for quad we have 4 indices, not 8
COLLADAFW::UIntValuesArray& indices = index_list.getIndices();
for (int index = 0; index < count; index++) {
int uv_index = indices[index+start_index];
uvs.getUV(uv_index, mloopuv[index].uv);
}
}
SubMesh* ColladaSubMeshReader::Load( void )
{
COLLADAFW::MeshPrimitiveArray& primitives = m_pMesh->getMeshPrimitives();
//若没有几何图元信息
if( 0 == primitives.getCount() )
{
return NULL;
}
COLLADAFW::MeshPrimitive* pPrimitive = primitives[0];
if( COLLADAFW::MeshPrimitive::TRIANGLES != pPrimitive->getPrimitiveType() )
{
return NULL;
}
COLLADAFW::UIntValuesArray& positionIndices = pPrimitive->getPositionIndices();
//若没有位置索引 则直接退出
if( 0 == positionIndices.getCount() )
{
return NULL;
}
COLLADAFW::UIntValuesArray& normalIndices = pPrimitive->getNormalIndices();
m_bHasNormals = ( normalIndices.getCount() != 0 );
COLLADAFW::UIntValuesArray& tangentIndices = pPrimitive->getTangentIndices();
m_bHasTangents = ( tangentIndices.getCount() != 0 );
COLLADAFW::UIntValuesArray& binormalIndices = pPrimitive->getBinormalIndices();
m_bHasBinormals = ( binormalIndices.getCount() != 0 );
COLLADAFW::IndexList* pUVs = NULL;
if( pPrimitive->getUVCoordIndicesArray().getCount() )
{
pUVs = pPrimitive->getUVCoordIndicesArray()[0];
m_bHasUVs = ( pUVs->getIndices().getCount() != 0 );
}
SubMesh* pSubMesh = new SubMesh;
pSubMesh->SetName( m_pMesh->getName() );
Resource::Material* pMaterial = Resource::MaterialManager::GetInstance()->CreateOrRetrieveMaterial( m_pMesh->getName() );
pSubMesh->SetMaterial( pMaterial );
Render::VertexBuffer& vertexBuf = pSubMesh->RenderData().VertexBuf();
pSubMesh->RenderData().PrimitiveType( Render::TYPE_TRIANGLES );
vertexBuf.ChannelFlag() = Render::POSITION_CH;
if( m_bHasNormals )
{
vertexBuf.ChannelFlag() |= Render::NORMAL_CH;
}
if( m_bHasUVs )
{
vertexBuf.ChannelFlag() |= Render::TEXCOORD_CH;
}
if( m_bHasTangents )
{
vertexBuf.ChannelFlag() |= Render::TANGENT_CH;
}
if( m_bHasBinormals )
{
vertexBuf.ChannelFlag() |= Render::BINORMAL_CH;
}
unsigned int uiCurrIndex = 0;
unsigned int uiIndicesCount = positionIndices.getCount();
for( unsigned int uiIndex = 0 ; uiIndex < uiIndicesCount ; uiIndex++ )
{
Tuple tuple;
tuple.m_posIndex = positionIndices[uiIndex];
if( m_bHasNormals )
{
tuple.m_normIndex = normalIndices[uiIndex];
}
if( m_bHasUVs )
{
tuple.m_uvIndex = pUVs->getIndices()[uiIndex];
}
if( m_bHasTangents )
{
tuple.m_tangentIndex = tangentIndices[uiIndex];
}
if( m_bHasBinormals )
{
tuple.m_binormalIndex = binormalIndices[uiIndex];
}
indicesTable_t::iterator itIndex = m_indicesMap.find(tuple);
if( itIndex == m_indicesMap.end() )
{
Render::Vertex newVert;
LoadVertexByTuple( tuple , newVert );
vertexBuf.AppendVertex( newVert );
m_indicesMap.insert( std::make_pair( tuple , uiCurrIndex ) );
pSubMesh->RenderData().AppendIndex( uiCurrIndex );
uiCurrIndex++;
}else{
pSubMesh->RenderData().AppendIndex( itIndex->second );
}
}//for( unsigned int uiIndex = 0 ; uiIndex < uiIndicesCount ; uiIndex++ )
return pSubMesh;
}