void Model::processMeshTextCoords(FbxMesh *mesh, Vertex *verts, int numVerts)
{
int matCount = mesh->GetElementMaterialCount();
FbxLayerElementMaterial *matElem = NULL;
if (matCount) //only supporting 1 material layer max
matElem = mesh->GetElementMaterial(0);
int polCount = mesh->GetPolygonCount();
for (int polInd = 0; polInd < polCount; polInd++)
{
int textureId = 0;
if (matElem)
{
textureId = matElem->GetIndexArray().GetAt(polInd);
}
for (unsigned polVert = 0; polVert < 3; polVert++)
{
int cornerIndex = mesh->GetPolygonVertex(polInd, polVert);
FbxVector2 UV = FbxVector2(0, 0);
FbxLayer *layer = mesh->GetLayer(0);
FbxLayerElementUV *layerUV = layer->GetUVs();
FbxLayerElementTexture *layerTexture = layer->GetTextures(FbxLayerElement::eTextureDiffuse);
if (layerUV)
{
int UVindex = 0;
switch (layerUV->GetMappingMode())
{
case FbxLayerElement::eByControlPoint:
UVindex = cornerIndex;
break;
case FbxLayerElement::eByPolygonVertex:
UVindex = mesh->GetTextureUVIndex(polInd, polVert, FbxLayerElement::eTextureDiffuse);
break;
case FbxLayerElement::eByPolygon:
UVindex = polInd;
break;
}
UV = layerUV->GetDirectArray().GetAt(UVindex);
verts[cornerIndex].color.x = textureId;
verts[cornerIndex].texture.x = UV[0];
verts[cornerIndex].texture.y = 1.f - UV[1];
}
}
}
}
BTHFBX_VEC2 FBXScene::GetTexCoord(FbxMesh* pFBXMesh, int nLayerIndex, int nPolygonIndex, int nPolygonVertexIndex, int nVertexIndex)
{
int nLayerCount = pFBXMesh->GetLayerCount();
if( nLayerIndex < nLayerCount )//for( int i = 0; i < nLayerCount; ++i )
{
FbxLayer* pFBXLayer = pFBXMesh->GetLayer(nLayerIndex);
if( pFBXLayer )
{
FbxLayerElementUV* pUVs = pFBXLayer->GetUVs(FbxLayerElement::EType::eTextureDiffuse);
if( pUVs )
{
FbxLayerElement::EMappingMode mappingMode = pUVs->GetMappingMode();
FbxLayerElement::EReferenceMode referenceMode = pUVs->GetReferenceMode();
const FbxLayerElementArrayTemplate<FbxVector2>& pUVArray = pUVs->GetDirectArray();
const FbxLayerElementArrayTemplate<int>& pUVIndexArray = pUVs->GetIndexArray();
switch(mappingMode)
{
case FbxLayerElement::eByControlPoint:
{
int nMappingIndex = nVertexIndex;
switch(referenceMode)
{
case FbxLayerElement::eDirect:
if( nMappingIndex < pUVArray.GetCount() )
{
return FBXTexCoordToD3DTexCoord( KFbxVector2ToBTHFBX_VEC2( pUVArray.GetAt(nMappingIndex) ) );
}
break;
case FbxLayerElement::eIndexToDirect:
if( nMappingIndex < pUVIndexArray.GetCount() )
{
int nIndex = pUVIndexArray.GetAt(nMappingIndex);
if( nIndex < pUVArray.GetCount() )
{
return FBXTexCoordToD3DTexCoord( KFbxVector2ToBTHFBX_VEC2( pUVArray.GetAt(nIndex) ) );
}
}
break;
};
}
break;
case FbxLayerElement::eByPolygonVertex:
{
int nMappingIndex = pFBXMesh->GetTextureUVIndex(nPolygonIndex, nPolygonVertexIndex, FbxLayerElement::eTextureDiffuse);
switch(referenceMode)
{
case FbxLayerElement::EReferenceMode::eDirect:
case FbxLayerElement::EReferenceMode::eIndexToDirect: //I have no idea why the index array is not used in this case.
if( nMappingIndex < pUVArray.GetCount() )
{
return FBXTexCoordToD3DTexCoord( KFbxVector2ToBTHFBX_VEC2( pUVArray.GetAt(nMappingIndex) ) );
}
break;
};
}
break;
};
}
}
}
return BTHFBX_VEC2();
}
void FbxLoader::LoadAttribute(FbxNodeAttribute* pAttribute)
{
if (pAttribute->GetAttributeType() == FbxNodeAttribute::eMesh)
{
FbxMesh* pMesh = (FbxMesh*)pAttribute;
FbxVector4* IControlPoints = pMesh->GetControlPoints();
m_vertexCount = pMesh->GetControlPointsCount();
m_vertexBuffer = new float[m_vertexCount * 4];
for (int i = 0; i < m_vertexCount * 4; i+=4)
{
m_vertexBuffer[i] = (float)IControlPoints[i / 4].mData[0];
m_vertexBuffer[i + 1] = (float)IControlPoints[i / 4].mData[1];
m_vertexBuffer[i + 2] = (float)IControlPoints[i / 4].mData[2];
m_vertexBuffer[i + 3] = 1.0f;// IControlPoints[i / 4].mData[3];
}
int* pIndices = pMesh->GetPolygonVertices();
m_indexCount = pMesh->GetPolygonVertexCount();
m_indexBuffer = new uint32[m_indexCount];
for (int i = 0; i < m_indexCount; ++i)
{
m_indexBuffer[i] = pIndices[i];
}
FbxLayer* pLayer = pMesh->GetLayer(0);
if (pLayer != NULL)
{
FbxLayerElementNormal* pNormal = pLayer->GetNormals();
m_normalCount = pNormal->mDirectArray->GetCount();
m_normalBuffer = new float[m_normalCount * 3];
for (int i = 0; i < m_normalCount * 3; i+=3)
{
m_normalBuffer[i] = (float)(*pNormal->mDirectArray)[i / 3][0];
m_normalBuffer[i + 1] = (float)(*pNormal->mDirectArray)[i / 3][1];
m_normalBuffer[i + 2] = (float)(*pNormal->mDirectArray)[i / 3][2];
//m_normalBuffer[i + 3] = (*pNormal->mDirectArray)[i / 4][3];
}
FbxLayerElementUV* pUV = pLayer->GetUVs();
if (pUV->GetMappingMode() == FbxLayerElement::eByPolygonVertex)
{
if (pUV->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
m_uvCount = pUV->mIndexArray->GetCount();
m_uvBuffer = new float[m_uvCount * 2];
for (int i = 0; i < m_uvCount * 2; i+=2)
{
m_uvBuffer[i] = (float)(*pUV->mDirectArray)[(*pUV->mIndexArray)[i / 2]][0];
m_uvBuffer[i + 1] = (float)(*pUV->mDirectArray)[(*pUV->mIndexArray)[i / 2]][1];
}
}
else
{
m_uvCount = pUV->mDirectArray->GetCount();
m_uvBuffer = new float[m_uvCount * 2];
for (int i = 0; i < m_uvCount * 2; i += 2)
{
m_uvBuffer[i] = (float)(*pUV->mDirectArray)[i / 2][0];
m_uvBuffer[i + 1] = (float)(*pUV->mDirectArray)[i / 2][1];
}
}
}
else
{
if (pUV->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
m_uvCount = pUV->mIndexArray->GetCount();
m_uvBuffer = new float[m_uvCount * 2];
for (int i = 0; i < m_uvCount * 2; i+=2)
{
m_uvBuffer[i] = (float)(*pUV->mDirectArray)[(*pUV->mIndexArray)[i / 2]][0];
m_uvBuffer[i + 1] = (float)(*pUV->mDirectArray)[(*pUV->mIndexArray)[i / 2]][1];
}
}
else
{
m_uvCount = pUV->mDirectArray->GetCount();
m_uvBuffer = new float[m_uvCount * 2];
for (int i = 0; i < m_uvCount * 2; i+=2)
{
m_uvBuffer[i] = (float)(*pUV->mDirectArray)[i / 2][0];
m_uvBuffer[i + 1] = (float)(*pUV->mDirectArray)[i / 2][1];
}
}
}
}
}
}
