FbxVector4 FBXScene::GetNormal(FbxMesh* pFBXMesh, int nLayerIndex, int nPolygonIndex, int nPolygonVertexIndex, int nVertexIndex)
{
FbxVector4 vNormal(0, 0, 0, 0);
int nLayerCount = pFBXMesh->GetLayerCount();
if( nLayerIndex < nLayerCount )//for( int i = 0; i < nLayerCount; ++i )
{
FbxLayer* pFBXLayer = pFBXMesh->GetLayer(nLayerIndex);
if( pFBXLayer )
{
FbxLayerElementNormal* pNormals = pFBXLayer->GetNormals();
if( pNormals )
{
int nIdx = 0;
if( pNormals->GetReferenceMode( ) == FbxLayerElement::EReferenceMode::eDirect )
{
nIdx = nVertexIndex;
}
if( pNormals->GetReferenceMode( ) == FbxLayerElement::EReferenceMode::eIndexToDirect )
{
nIdx = pNormals->GetIndexArray( ).GetAt( nVertexIndex );
}
const FbxLayerElementArrayTemplate<FbxVector4>& pNormalArray = pNormals->GetDirectArray();
if( nIdx < pNormalArray.GetCount() )
{
vNormal = pNormalArray.GetAt(nIdx);
vNormal.Normalize();
}
}
}
}
return vNormal;
}
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];
}
}
}
}
}
}
