void LoaderFbxMesh::parseVertexTangents(FbxMesh* mesh, int controlPointIndex, int vertexId)
{
for(int i=0; i<mesh->GetElementTangentCount(); i++)
{
FbxVector4 fbxTangent(0, 0, 0, 0);
FbxGeometryElementTangent* tangentElement = mesh->GetElementTangent(i);
switch(tangentElement->GetMappingMode())
{
case FbxGeometryElement::eByControlPoint:
fbxTangent = parseVertexTangentsByControlPoint(tangentElement, controlPointIndex);
break;
case FbxGeometryElement::eByPolygonVertex:
fbxTangent = parseVertexTangentsByPolygonVertex(tangentElement, vertexId);
break;
default:
break;
}
Float4 tangent;
tangent.x = static_cast<float>(fbxTangent.mData[0]);
tangent.y = static_cast<float>(fbxTangent.mData[1]);
tangent.z = static_cast<float>(fbxTangent.mData[2]);
tangent.w = static_cast<float>(fbxTangent.mData[3]);
vertexTangents_.push_back(tangent);
}
}
void FBXSceneImporter::read_mesh(FbxNode *pNode, FbxMesh* pMesh)
{
std::vector<Mesh::Vertex> vertices;
std::vector<int> indices;
//pMesh->GenerateTangentsDataForAllUVSets();
Mesh *new_mesh = new Mesh();
new_mesh->set_name(pNode->GetName());
int polygonCount = pMesh->GetPolygonCount();
FbxVector4* controlPoints = pMesh->GetControlPoints();
int controlPointCount = pMesh->GetControlPointsCount();
int vertexID = 0;
for (int polygon = polygonCount - 1; polygon > -1; polygon--)
{
int polyVertCount = pMesh->GetPolygonSize(polygon);
assert(polyVertCount == 3);
for (int polyVert = 0; polyVert < polyVertCount; polyVert++)
{
Mesh::Vertex vertex;
int cpIndex = pMesh->GetPolygonVertex(polygon, polyVert);
// Grab our CP index as well our position information
//uniqueVert.m_nControlPointIndex = cpIndex;
vertex.position[0] = controlPoints[cpIndex].mData[0];
vertex.position[1] = controlPoints[cpIndex].mData[1];
vertex.position[2] = controlPoints[cpIndex].mData[2];
vertex.position[3] = 1;
// Grab UVs
int uvElementCount = pMesh->GetElementUVCount();
int ctrlPointIndex = pMesh->GetPolygonVertex(polygon, polyVert);
for (int uvElement = 0; uvElement < uvElementCount; uvElement++)
{
FbxGeometryElementUV* geomElementUV = pMesh->GetElementUV(uvElement);
FbxLayerElement::EMappingMode mapMode = geomElementUV->GetMappingMode();
FbxLayerElement::EReferenceMode refMode = geomElementUV->GetReferenceMode();
if (FbxGeometryElement::eByControlPoint == mapMode)
{
switch (geomElementUV->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
vertex.texture_coord.x = static_cast<float>(geomElementUV->GetDirectArray().GetAt(ctrlPointIndex).mData[0]);
vertex.texture_coord.y = static_cast<float>(geomElementUV->GetDirectArray().GetAt(ctrlPointIndex).mData[1]);
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int index = geomElementUV->GetIndexArray().GetAt(ctrlPointIndex);
vertex.texture_coord.x = static_cast<float>(geomElementUV->GetDirectArray().GetAt(index).mData[0]);
vertex.texture_coord.y = static_cast<float>(geomElementUV->GetDirectArray().GetAt(index).mData[1]);
}
break;
default:
throw std::exception("Invalid Reference");
}
}
if (FbxGeometryElement::eByPolygonVertex == mapMode)
{
int directIndex = -1;
if (FbxGeometryElement::eDirect == refMode)
{
directIndex = vertexID;
}
else if (FbxGeometryElement::eIndexToDirect == refMode)
{
directIndex = geomElementUV->GetIndexArray().GetAt(vertexID);
}
// If we got an index
if (directIndex != -1)
{
FbxVector4 texture_coord = geomElementUV->GetDirectArray().GetAt(directIndex);
vertex.texture_coord = D3DXVECTOR4((float)texture_coord.mData[0], (float)texture_coord.mData[1], 0, 0);
}
}
}
// Grab normals
int normElementCount = pMesh->GetElementNormalCount();
for (int normalElement = 0; normalElement < normElementCount; normalElement++)
{
FbxGeometryElementNormal* geomElementNormal = pMesh->GetElementNormal(normalElement);
FbxLayerElement::EMappingMode mapMode = geomElementNormal->GetMappingMode();
FbxLayerElement::EReferenceMode refMode = geomElementNormal->GetReferenceMode();
FbxVector4 fbxNormal;
pMesh->GetPolygonVertexNormal(polygon, polyVert, fbxNormal);
fbxNormal.Normalize();
vertex.normal = D3DXVECTOR4(fbxNormal.mData[0], fbxNormal.mData[1], fbxNormal.mData[2], 0);
//if (FbxGeometryElement::eByControlPoint == mapMode)
//{
// switch (geomElementNormal->GetReferenceMode())
// {
// case FbxGeometryElement::eDirect:
// {
// vertex.normal.x = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(ctrlPointIndex).mData[0]);
// vertex.normal.y = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(ctrlPointIndex).mData[1]);
// vertex.normal.z = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(ctrlPointIndex).mData[2]);
// D3DXVec4Normalize(&vertex.normal, &vertex.normal);
// }
// break;
//
// case FbxGeometryElement::eIndexToDirect:
// {
// int index = geomElementNormal->GetIndexArray().GetAt(ctrlPointIndex);
// vertex.normal.x = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(index).mData[0]);
// vertex.normal.y = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(index).mData[1]);
// vertex.normal.z = static_cast<float>(geomElementNormal->GetDirectArray().GetAt(index).mData[2]);
// D3DXVec4Normalize(&vertex.normal, &vertex.normal);
// }
// break;
//
// default:
// throw std::exception("Invalid Reference");
// }
//}
//if (FbxGeometryElement::eByPolygonVertex == mapMode)
//{
// int directIndex = -1;
// if (FbxGeometryElement::eDirect == refMode)
// {
// directIndex = vertexID;
// }
// else if (FbxGeometryElement::eIndexToDirect == refMode)
// {
// directIndex = geomElementNormal->GetIndexArray().GetAt(vertexID);
// }
//
// // If we got an index
// if (directIndex != -1)
// {
// FbxVector4 norm = geomElementNormal->GetDirectArray().GetAt(directIndex);
//
// D3DXVECTOR4 normal_final((float)norm.mData[0], (float)norm.mData[1], (float)norm.mData[2], 0);
// D3DXVec4Normalize(&vertex.normal, &normal_final);
// }
//}
}
// grab tangents
int tangentElementCount = pMesh->GetElementTangentCount();
for (int normalElement = 0; normalElement < tangentElementCount; normalElement++)
{
FbxGeometryElementTangent* geomElementTangent = pMesh->GetElementTangent(normalElement);
FbxLayerElement::EMappingMode mapMode = geomElementTangent->GetMappingMode();
FbxLayerElement::EReferenceMode refMode = geomElementTangent->GetReferenceMode();
int directIndex = -1;
if (FbxGeometryElement::eByPolygonVertex == mapMode)
{
if (FbxGeometryElement::eDirect == refMode)
{
directIndex = vertexID;
}
else if (FbxGeometryElement::eIndexToDirect == refMode)
{
directIndex = geomElementTangent->GetIndexArray().GetAt(vertexID);
}
}
// If we got an index
if (directIndex != 1)
{
FbxVector4 tangent = geomElementTangent->GetDirectArray().GetAt(directIndex);
vertex.tangent = D3DXVECTOR4((float)tangent.mData[0], (float)tangent.mData[1], (float)tangent.mData[2], 0);
}
}
size_t size = vertices.size();
size_t i = size;
//for (i = 0; i < size; i++)
//{
// if (vertex == vertices[i])
// {
// break;
// }
//}
//
if (i == size)
{
vertices.push_back(vertex);
}
indices.push_back(i);
++vertexID;
}
//int cur_size = indices.size();
//int temp = indices[cur_size - 3];
//indices[cur_size - 3] = indices[cur_size - 1];
//indices[cur_size - 1] = temp;
}
int materialCount = pNode->GetSrcObjectCount<FbxSurfaceMaterial>();
new_mesh->create_from_buffers(vertices, indices);
scene_to_fill->add_mesh(new_mesh);
if (materialCount > 0)
{
FbxSurfaceMaterial* material = (FbxSurfaceMaterial*)pNode->GetSrcObject<FbxSurfaceMaterial>(0);
new_mesh->set_material(read_material(pNode, material));
}
get_transformation_matrix(pNode, new_mesh);
cout << "Read mesh : " << new_mesh->get_name() << "\n";
}
std::shared_ptr<Mesh> FbxUtil::CreateMesh(FbxMesh *fbxMesh)
{
Mesh::Ptr mesh = Mesh::Create(fbxMesh->GetName());
// read physical data.
int polygonCount = fbxMesh->GetPolygonCount();
int indicesCount = polygonCount * 3;
mesh->Positions.Data.reserve(indicesCount * 3);
mesh->Indices.Data.reserve(indicesCount);
if ((m_Options & Options::UV) && fbxMesh->GetElementUVCount() > 0)
mesh->UVs.Data.reserve(indicesCount * 2);
if ((m_Options & Options::NORMAL) && fbxMesh->GetElementNormalCount() > 0)
mesh->Normals.Data.reserve(indicesCount * 3);
if ((m_Options & Options::TANGENT) && fbxMesh->GetElementTangent() > 0)
mesh->Tangents.Data.reserve(indicesCount * 3);
int normalCounter = 0, uvCounter = 0, tangentCounter = 0;
for (int i = 0; i < polygonCount; i++)
{
for (int j = 0; j < 3; j++)
{
int ctrPtrIndex = fbxMesh->GetPolygonVertex(i, j);
auto position = fbxMesh->GetControlPointAt(ctrPtrIndex);
mesh->Positions.Data.push_back((float)position.mData[0]);
mesh->Positions.Data.push_back((float)position.mData[1]);
mesh->Positions.Data.push_back((float)position.mData[2]);
// uv
if ((m_Options & Options::UV) && fbxMesh->GetElementUVCount() > 0)
{
int uvIndex = 0;
FbxGeometryElementUV* vertexUV = fbxMesh->GetElementUV();
if (vertexUV->GetMappingMode() == FbxGeometryElement::eByControlPoint)
{
if (vertexUV->GetReferenceMode() == FbxGeometryElement::eDirect)
uvIndex = ctrPtrIndex;
else if (vertexUV->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
uvIndex = vertexUV->GetIndexArray().GetAt(ctrPtrIndex);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
}
else if (vertexUV->GetMappingMode() == FbxGeometryElement::eByPolygonVertex)
{
if (vertexUV->GetReferenceMode() == FbxGeometryElement::eDirect)
uvIndex = uvCounter;
else if (vertexUV->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
uvIndex = vertexUV->GetIndexArray().GetAt(uvCounter);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
uvCounter++;
}
auto uv = vertexUV->GetDirectArray().GetAt(uvIndex);
mesh->UVs.Data.push_back((float)uv.mData[0]);
mesh->UVs.Data.push_back(1.0f - (float)uv.mData[1]);
}
// normal
if ((m_Options & Options::NORMAL) && fbxMesh->GetElementNormalCount() > 0)
{
int normalIndex = 0;
FbxGeometryElementNormal* vertexNormal = fbxMesh->GetElementNormal();
if (vertexNormal->GetMappingMode() == FbxGeometryElement::eByControlPoint)
{
if (vertexNormal->GetReferenceMode() == FbxGeometryElement::eDirect)
normalIndex = ctrPtrIndex;
else if (vertexNormal->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
normalIndex = vertexNormal->GetIndexArray().GetAt(ctrPtrIndex);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
}
else if (vertexNormal->GetMappingMode() == FbxGeometryElement::eByPolygonVertex)
{
if (vertexNormal->GetReferenceMode() == FbxGeometryElement::eDirect)
normalIndex = normalCounter;
else if (vertexNormal->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
normalIndex = vertexNormal->GetIndexArray().GetAt(normalCounter);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
normalCounter++;
}
auto normal = vertexNormal->GetDirectArray().GetAt(normalIndex);
mesh->Normals.Data.push_back((float)normal.mData[0]);
mesh->Normals.Data.push_back((float)normal.mData[1]);
mesh->Normals.Data.push_back((float)normal.mData[2]);
}
// tangent
if ((m_Options & Options::TANGENT) && fbxMesh->GetElementNormalCount() > 0)
{
int tangentIndex = 0;
FbxGeometryElementTangent* vertexTangent = fbxMesh->GetElementTangent();
if (vertexTangent->GetMappingMode() == FbxGeometryElement::eByControlPoint)
{
if (vertexTangent->GetReferenceMode() == FbxGeometryElement::eDirect)
tangentIndex = ctrPtrIndex;
else if (vertexTangent->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
tangentIndex = vertexTangent->GetIndexArray().GetAt(ctrPtrIndex);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
}
else if (vertexTangent->GetMappingMode() == FbxGeometryElement::eByPolygonVertex)
{
if (vertexTangent->GetReferenceMode() == FbxGeometryElement::eDirect)
tangentIndex = tangentCounter;
else if (vertexTangent->GetReferenceMode() == FbxGeometryElement::eIndexToDirect)
tangentIndex = vertexTangent->GetIndexArray().GetAt(tangentCounter);
else
ASSERT_MSG(false, "Error: Invalid Reference Mode!");
tangentCounter++;
}
auto tangent = vertexTangent->GetDirectArray().GetAt(tangentIndex);
mesh->Tangents.Data.push_back((float)tangent.mData[0]);
mesh->Tangents.Data.push_back((float)tangent.mData[1]);
mesh->Tangents.Data.push_back((float)tangent.mData[2]);
}
mesh->Indices.Data.push_back(i * 3 + j);
}
}
LOGD << mesh->GetName() << " [vtx: " << mesh->Positions.Data.size() / 3 << " tris: " << mesh->Indices.Data.size() / 3 << "]";
if(m_Options & Options::OPTIMIZE_MESH)
MeshUtil::Instance()->OptimizeMesh(mesh);
mesh->CalculateAABB();
return mesh;
}
void FBXImporter::ReadTangents(FBXMeshData* fbxMeshData, int controlPointIndex, int tangentIndex)
{
FbxMesh* mesh = fbxMeshData->mMesh;
if (mesh->GetElementTangentCount() < 1)
{
return;
}
FbxGeometryElementTangent* tangentElement = mesh->GetElementTangent(0);
switch (tangentElement->GetMappingMode())
{
case FbxGeometryElement::eByControlPoint:
{
switch (tangentElement->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
FbxVector4 fbxTangent = tangentElement->GetDirectArray().GetAt(controlPointIndex);
XMFLOAT3 tangent;
tangent.x = static_cast<float>(fbxTangent[0]);
tangent.y = static_cast<float>(fbxTangent[1]);
tangent.z = static_cast<float>(fbxTangent[2]);
fbxMeshData->mTangents.push_back(tangent);
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangentElement->GetIndexArray().GetAt(controlPointIndex);
FbxVector4 fbxTangent = tangentElement->GetDirectArray().GetAt(id);
XMFLOAT3 tangent;
tangent.x = static_cast<float>(fbxTangent[0]);
tangent.y = static_cast<float>(fbxTangent[1]);
tangent.z = static_cast<float>(fbxTangent[2]);
fbxMeshData->mTangents.push_back(tangent);
}
break;
default:
break;
}
}
case FbxGeometryElement::eByPolygonVertex:
{
switch (tangentElement->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
FbxVector4 fbxTangent = tangentElement->GetDirectArray().GetAt(tangentIndex);
XMFLOAT3 tangent;
tangent.x = static_cast<float>(fbxTangent[0]);
tangent.y = static_cast<float>(fbxTangent[1]);
tangent.z = static_cast<float>(fbxTangent[2]);
fbxMeshData->mTangents.push_back(tangent);
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangentElement->GetIndexArray().GetAt(tangentIndex);
FbxVector4 fbxTangent = tangentElement->GetDirectArray().GetAt(id);
XMFLOAT3 tangent;
tangent.x = static_cast<float>(fbxTangent[0]);
tangent.y = static_cast<float>(fbxTangent[1]);
tangent.z = static_cast<float>(fbxTangent[2]);
fbxMeshData->mTangents.push_back(tangent);
}
break;
default:
break;
}
}
//break;
default:
break;
}
}
void loadTangent(FbxMesh* fbxMesh, int vertexIndex, int controlPointIndex, Vertex* vertex)
{
if (fbxMesh->GetElementTangentCount() > 0)
{
// Get only the first tangent
FbxGeometryElementTangent* tangent = fbxMesh->GetElementTangent(0);
FbxGeometryElement::EMappingMode mappingMode = tangent->GetMappingMode();
if (mappingMode == FbxGeometryElement::eByControlPoint)
{
switch (tangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
FbxVector4 vec4 = tangent->GetDirectArray().GetAt(controlPointIndex);
vertex->hasTangent = true;
vertex->tangent.x = (float)vec4[0];
vertex->tangent.y = (float)vec4[1];
vertex->tangent.z = (float)vec4[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangent->GetIndexArray().GetAt(controlPointIndex);
FbxVector4 vec4 = tangent->GetDirectArray().GetAt(id);
vertex->hasTangent = true;
vertex->tangent.x = (float)vec4[0];
vertex->tangent.y = (float)vec4[1];
vertex->tangent.z = (float)vec4[2];
}
break;
default:
break;
}
}
else if (mappingMode == FbxGeometryElement::eByPolygonVertex)
{
switch (tangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
FbxVector4 vec4 = tangent->GetDirectArray().GetAt(vertexIndex);
vertex->hasTangent = true;
vertex->tangent.x = (float)vec4[0];
vertex->tangent.y = (float)vec4[1];
vertex->tangent.z = (float)vec4[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangent->GetIndexArray().GetAt(vertexIndex);
FbxVector4 vec4 = tangent->GetDirectArray().GetAt(id);
vertex->hasTangent = true;
vertex->tangent.x = (float)vec4[0];
vertex->tangent.y = (float)vec4[1];
vertex->tangent.z = (float)vec4[2];
}
break;
default:
break;
}
}
}
}
void fbxLoader2::readTangent(FbxMesh* mesh, int controlPointIndex, int vertexCounter, D3DXVECTOR3* tangent)
{
if(mesh->GetElementTangentCount() < 1)
{
return;
}
FbxGeometryElementTangent* tangentEl = mesh->GetElementTangent(0);
switch(tangentEl->GetMappingMode())
{
case FbxGeometryElement::eByControlPoint:
{
switch(tangentEl->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
tangent->x = (float)tangentEl->GetDirectArray().GetAt(controlPointIndex).mData[0];
tangent->y = (float)tangentEl->GetDirectArray().GetAt(controlPointIndex).mData[1];
tangent->z = (float)tangentEl->GetDirectArray().GetAt(controlPointIndex).mData[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangentEl->GetIndexArray().GetAt(controlPointIndex);
tangent->x = (float)tangentEl->GetDirectArray().GetAt(id).mData[0];
tangent->y = (float)tangentEl->GetDirectArray().GetAt(id).mData[1];
tangent->z = (float)tangentEl->GetDirectArray().GetAt(id).mData[2];
}
break;
}
}
break;
case FbxGeometryElement::eByPolygonVertex:
{
switch(tangentEl->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
tangent->x = (float)tangentEl->GetDirectArray().GetAt(vertexCounter).mData[0];
tangent->y = (float)tangentEl->GetDirectArray().GetAt(vertexCounter).mData[1];
tangent->z = (float)tangentEl->GetDirectArray().GetAt(vertexCounter).mData[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = tangentEl->GetIndexArray().GetAt(vertexCounter);
tangent->x = (float)tangentEl->GetDirectArray().GetAt(id).mData[0];
tangent->y = (float)tangentEl->GetDirectArray().GetAt(id).mData[1];
tangent->z = (float)tangentEl->GetDirectArray().GetAt(id).mData[2];
}
break;
}
}
break;
}
}
//===============================================================================================================================
bool FBXLoader::LoadVertexTangent(FbxMesh* mesh, int inCtrlPointIndex, int inVertexCounter, int tangentElement, XMFLOAT3& outTangent)
{
if (mesh->GetElementTangentCount() < 1)
{
throw std::exception("Invalid Tangent Number");
}
int directIndex = -1;
FbxGeometryElementTangent* vertexTangent = mesh->GetElementTangent(tangentElement);
switch (vertexTangent->GetMappingMode())
{
case FbxGeometryElement::eByControlPoint:
{
switch (vertexTangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
directIndex = inCtrlPointIndex;
//outTangent.x = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inCtrlPointIndex).mData[0]);
//outTangent.y = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inCtrlPointIndex).mData[1]);
//outTangent.z = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inCtrlPointIndex).mData[2]);
}
break;
case FbxGeometryElement::eIndexToDirect:
{
directIndex = vertexTangent->GetIndexArray().GetAt(inCtrlPointIndex);
//int index = vertexTangent->GetIndexArray().GetAt(inCtrlPointIndex);
//outTangent.x = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[0]);
//outTangent.y = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[1]);
//outTangent.z = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[2]);
}
break;
default: throw std::exception("Invalid Reference");
}
}
break;
case FbxGeometryElement::eByPolygonVertex:
{
switch (vertexTangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
directIndex = inVertexCounter;
//outTangent.x = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inVertexCounter).mData[0]);
//outTangent.y = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inVertexCounter).mData[1]);
//outTangent.z = static_cast<float>(vertexTangent->GetDirectArray().GetAt(inVertexCounter).mData[2]);
}
break;
case FbxGeometryElement::eIndexToDirect:
{
directIndex = vertexTangent->GetIndexArray().GetAt(inVertexCounter);
//int index = vertexTangent->GetIndexArray().GetAt(inVertexCounter);
//outTangent.x = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[0]);
//outTangent.y = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[1]);
//outTangent.z = static_cast<float>(vertexTangent->GetDirectArray().GetAt(index).mData[2]);
}
break;
default: throw std::exception("Invalid Reference");
}
}
break;
}
if (directIndex != -1)
{
FbxVector4 tan = vertexTangent->GetDirectArray().GetAt(directIndex);
outTangent = XMFLOAT3((float)tan.mData[0], (float)tan.mData[1], (float)tan.mData[2]);
return true;
}
return false;
}
void ReadTangent(FbxMesh* pMesh , int ctrlPointIndex , int vertecCounter , D3DXVECTOR3* pTangent)
{
if(pMesh->GetElementTangentCount() < 1)
{
return;
}
FbxGeometryElementTangent* leTangent = pMesh->GetElementTangent(0);
switch(leTangent->GetMappingMode())
{
case FbxGeometryElement::eByControlPoint:
{
switch(leTangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
pTangent->x = leTangent->GetDirectArray().GetAt(ctrlPointIndex)[0];
pTangent->y = leTangent->GetDirectArray().GetAt(ctrlPointIndex)[1];
pTangent->z = leTangent->GetDirectArray().GetAt(ctrlPointIndex)[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = leTangent->GetIndexArray().GetAt(ctrlPointIndex);
pTangent->x = leTangent->GetDirectArray().GetAt(id)[0];
pTangent->y = leTangent->GetDirectArray().GetAt(id)[1];
pTangent->z = leTangent->GetDirectArray().GetAt(id)[2];
}
break;
default:
break;
}
}
break;
case FbxGeometryElement::eByPolygonVertex:
{
switch(leTangent->GetReferenceMode())
{
case FbxGeometryElement::eDirect:
{
pTangent->x = leTangent->GetDirectArray().GetAt(vertecCounter)[0];
pTangent->y = leTangent->GetDirectArray().GetAt(vertecCounter)[1];
pTangent->z = leTangent->GetDirectArray().GetAt(vertecCounter)[2];
}
break;
case FbxGeometryElement::eIndexToDirect:
{
int id = leTangent->GetIndexArray().GetAt(vertecCounter);
pTangent->x = leTangent->GetDirectArray().GetAt(id)[0];
pTangent->y = leTangent->GetDirectArray().GetAt(id)[1];
pTangent->z = leTangent->GetDirectArray().GetAt(id)[2];
}
break;
default:
break;
}
}
break;
}
}
