UINT Converter::getMaterialIndex(FbxMesh *m)
{
int triangleCount = m->GetPolygonCount();
FbxLayerElementArrayTemplate<int> *indices;
if (m->GetElementMaterial()) {
indices = &(m->GetElementMaterial()->GetIndexArray());
if (indices) {
switch (m->GetElementMaterial()->GetMappingMode()) {
case FbxGeometryElement::eByPolygon:
if (indices->GetCount() == triangleCount)
for (int i = 0; i < triangleCount; ++i) {
return indices->GetAt(i);
}
break;
case FbxGeometryElement::eAllSame:
for (int i = 0; i < triangleCount; ++i) {
return indices->GetAt(0);
}
break;
default:
throw std::exception("Material index mapping mode error.");
}
}
}
return 0;
}
bool countUVandCPusage(vector<int> &cntUV, vector<int> &cntCP, FbxMesh* mesh)
{
for (int i = 0; i < mesh->mControlPoints.GetCount(); i++)
cntCP.push_back(0);
FbxLayerElementArrayTemplate<FbxVector2>* uvlayer;
if (mesh->GetTextureUV(&uvlayer) == false)
{
return false;
}
for (int i = 0; i < uvlayer->GetCount(); i++)
{
cntUV.push_back(0);
}
for (int i = 0; i < mesh->GetPolygonCount(); i++)
{
for (int j = 0; j < mesh->GetPolygonSize(i); j++)
{
cntUV[mesh->GetTextureUVIndex(i, j)]++;
cntCP[mesh->GetMeshEdgeIndexForPolygon(i, j)]++;
}
}
return true;
}
//===============================================================================================================================
void FBXLoader::AssociateMaterialToMesh(FbxNode* inNode)
{
FbxLayerElementArrayTemplate<int>* materialIndices;
FbxGeometryElement::EMappingMode materialMappingMode = FbxGeometryElement::eNone;
FbxMesh* mesh = inNode->GetMesh();
if (mesh->GetElementMaterial())
{
materialIndices = &(mesh->GetElementMaterial()->GetIndexArray());
materialMappingMode = mesh->GetElementMaterial()->GetMappingMode();
FBXSubsets* subset = mSubsets[iCurrentSubset];
if (materialIndices)
{
switch (materialMappingMode)
{
case FbxGeometryElement::eByPolygon:
{
if (materialIndices->GetCount() == subset->mPolygonCount)
{
for (uint32 i = 0; i < subset->mPolygonCount; ++i)
{
uint32 materialIndex = materialIndices->GetAt(i);
//subset->mTriangles[i].materialIndex = materialIndex;
subset->mMaterialIndex = materialIndex;
}
}
}
break;
case FbxGeometryElement::eAllSame:
{
uint32 materialIndex = materialIndices->GetAt(0);
for (uint32 i = 0; i < subset->mPolygonCount; ++i)
{
//subset->mTriangles[i].materialIndex = materialIndex;
subset->mMaterialIndex = materialIndex;
}
}
break;
default: throw std::exception("Invalid mapping mode for material\n");
}
}
}
}
void FBXImporter::ConnectMaterialsToMesh(FbxMesh* mesh, int triangleCount)
{
// Get the material index list of current mesh.
FbxLayerElementArrayTemplate<int>* materialIndices;
FbxGeometryElement::EMappingMode materialMappingMode = FbxGeometryElement::eNone;
if (mesh->GetElementMaterial() != nullptr)
{
// Get the material indices.
materialIndices = &mesh->GetElementMaterial()->GetIndexArray();
materialMappingMode = mesh->GetElementMaterial()->GetMappingMode();
switch (materialMappingMode)
{
// 单mesh多材质的情况，我们需要按照三角形数量来遍历材质ID。
case FbxLayerElement::eByPolygon:
isByPolygon = true;
isAllSame = false;
if (materialIndices->GetCount() == triangleCount)
{
int materialId = materialIndices->GetAt(0);
int polygonCount = 0;
vector<MaterialIdOffset>& offsets = mMeshData->materialIdOffsets;
MaterialIdOffset offset;
offset.material = new Material();
for (int triangleIndex = 0; triangleIndex < triangleCount; triangleIndex++)
{
int materialIndex = materialIndices->GetAt(triangleIndex);
// 比较当前materialId和上次循环的materialId，
// 如果相同的话说明我们在处理拥有同一个materialId的三角形集合，
// 我们只需要增加三角形计数，保存materialId。
if (materialId == materialIndex)
{
offset.polygonCount++;
offset.material->materialId = materialIndex;
// 如果已经遍历最后一个三角形，保存材质偏移信息。n
if (triangleIndex == triangleCount - 1)
{
offsets.push_back(offset);
}
}
// 如果当前materialId和上次循环的不同，说明开始了新的三角形集合
// 那么我们就将旧的集合保存到容器，开始处理新集合。
else
{
offsets.push_back(offset);
offset.material = new Material();
offset.material->materialId = materialIndex;
offset.polygonCount = 0;
offset.polygonCount++;
}
materialId = materialIndex;
}
}
break;
case FbxLayerElement::eAllSame:
{
isAllSame = true;
isByPolygon = false;
int materialIndex = materialIndices->GetAt(0);
MaterialIdOffset offset;
offset.material = new Material();
vector<MaterialIdOffset>& offsets = mMeshData->materialIdOffsets;
offset.material->materialId = materialIndex;
offset.polygonCount = triangleCount;
offsets.push_back(offset);
}
break;
default:
break;
}
}
}
//ур╣╫ак
bool VBOMesh::Initialize(const FbxMesh *pMesh)
{
if (!pMesh->GetNode())
return false;
const int lPolygonCount = pMesh->GetPolygonCount();
// Count the polygon count of each material
FbxLayerElementArrayTemplate<int>* lMaterialIndice = NULL;
FbxGeometryElement::EMappingMode lMaterialMappingMode = FbxGeometryElement::eNone;
if (pMesh->GetElementMaterial())
{
lMaterialIndice = &pMesh->GetElementMaterial()->GetIndexArray();
lMaterialMappingMode = pMesh->GetElementMaterial()->GetMappingMode();
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
FBX_ASSERT(lMaterialIndice->GetCount() == lPolygonCount);
if (lMaterialIndice->GetCount() == lPolygonCount)
{
// Count the faces of each material
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
if (mSubMeshes.GetCount() < lMaterialIndex + 1)
{
mSubMeshes.Resize(lMaterialIndex + 1);
}
if (mSubMeshes[lMaterialIndex] == NULL)
{
mSubMeshes[lMaterialIndex] = new SubMesh;
}
mSubMeshes[lMaterialIndex]->TriangleCount += 1;
}
// Make sure we have no "holes" (NULL) in the mSubMeshes table. This can happen
// if, in the loop above, we resized the mSubMeshes by more than one slot.
for (int i = 0; i < mSubMeshes.GetCount(); i++)
{
if (mSubMeshes[i] == NULL)
mSubMeshes[i] = new SubMesh;
}
// Record the offset (how many vertex)
const int lMaterialCount = mSubMeshes.GetCount();
int lOffset = 0;
for (int lIndex = 0; lIndex < lMaterialCount; ++lIndex)
{
mSubMeshes[lIndex]->IndexOffset = lOffset;
lOffset += mSubMeshes[lIndex]->TriangleCount * 3;
// This will be used as counter in the following procedures, reset to zero
mSubMeshes[lIndex]->TriangleCount = 0;
}
FBX_ASSERT(lOffset == lPolygonCount * 3);
}
}
}
// All faces will use the same material.
if (mSubMeshes.GetCount() == 0)
{
mSubMeshes.Resize(1);
mSubMeshes[0] = new SubMesh();
}
// Congregate all the data of a mesh to be cached in VBOs.
// If normal or UV is by polygon vertex, record all vertex attributes by polygon vertex.
mHasNormal = pMesh->GetElementNormalCount() > 0;
mHasUV = pMesh->GetElementUVCount() > 0;
FbxGeometryElement::EMappingMode lNormalMappingMode = FbxGeometryElement::eNone;
FbxGeometryElement::EMappingMode lUVMappingMode = FbxGeometryElement::eNone;
if (mHasNormal)
{
lNormalMappingMode = pMesh->GetElementNormal(0)->GetMappingMode();
if (lNormalMappingMode == FbxGeometryElement::eNone)
{
mHasNormal = false;
}
if (mHasNormal && lNormalMappingMode != FbxGeometryElement::eByControlPoint)
{
mAllByControlPoint = false;
}
}
if (mHasUV)
{
lUVMappingMode = pMesh->GetElementUV(0)->GetMappingMode();
if (lUVMappingMode == FbxGeometryElement::eNone)
{
mHasUV = false;
}
if (mHasUV && lUVMappingMode != FbxGeometryElement::eByControlPoint)
{
mAllByControlPoint = false;
}
}
// Allocate the array memory, by control point or by polygon vertex.
int lPolygonVertexCount = pMesh->GetControlPointsCount();
if (!mAllByControlPoint)
{
lPolygonVertexCount = lPolygonCount * TRIANGLE_VERTEX_COUNT;
}
float * lVertices = new float[lPolygonVertexCount * VERTEX_STRIDE];
unsigned int * lIndices = new unsigned int[lPolygonCount * TRIANGLE_VERTEX_COUNT];
float * lNormals = NULL;
if (mHasNormal)
{
lNormals = new float[lPolygonVertexCount * NORMAL_STRIDE];
}
float * lUVs = NULL;
FbxStringList lUVNames;
pMesh->GetUVSetNames(lUVNames);
const char * lUVName = NULL;
if (mHasUV && lUVNames.GetCount())
{
lUVs = new float[lPolygonVertexCount * UV_STRIDE];
lUVName = lUVNames[0];
}
// Populate the array with vertex attribute, if by control point.
const FbxVector4 * lControlPoints = pMesh->GetControlPoints();
FbxVector4 lCurrentVertex;
FbxVector4 lCurrentNormal;
FbxVector2 lCurrentUV;
if (mAllByControlPoint)
{
const FbxGeometryElementNormal * lNormalElement = NULL;
const FbxGeometryElementUV * lUVElement = NULL;
if (mHasNormal)
{
lNormalElement = pMesh->GetElementNormal(0);
}
if (mHasUV)
{
lUVElement = pMesh->GetElementUV(0);
}
for (int lIndex = 0; lIndex < lPolygonVertexCount; ++lIndex)
{
// Save the vertex position.
lCurrentVertex = lControlPoints[lIndex];
lVertices[lIndex * VERTEX_STRIDE] = static_cast<float>(lCurrentVertex[0]);
lVertices[lIndex * VERTEX_STRIDE + 1] = static_cast<float>(lCurrentVertex[1]);
lVertices[lIndex * VERTEX_STRIDE + 2] = static_cast<float>(lCurrentVertex[2]);
lVertices[lIndex * VERTEX_STRIDE + 3] = 1;
// Save the normal.
if (mHasNormal)
{
int lNormalIndex = lIndex;
if (lNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lNormalIndex = lNormalElement->GetIndexArray().GetAt(lIndex);
}
lCurrentNormal = lNormalElement->GetDirectArray().GetAt(lNormalIndex);
lNormals[lIndex * NORMAL_STRIDE] = static_cast<float>(lCurrentNormal[0]);
lNormals[lIndex * NORMAL_STRIDE + 1] = static_cast<float>(lCurrentNormal[1]);
lNormals[lIndex * NORMAL_STRIDE + 2] = static_cast<float>(lCurrentNormal[2]);
}
// Save the UV.
if (mHasUV)
{
int lUVIndex = lIndex;
if (lUVElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lUVIndex = lUVElement->GetIndexArray().GetAt(lIndex);
}
lCurrentUV = lUVElement->GetDirectArray().GetAt(lUVIndex);
lUVs[lIndex * UV_STRIDE] = static_cast<float>(lCurrentUV[0]);
lUVs[lIndex * UV_STRIDE + 1] = static_cast<float>(lCurrentUV[1]);
}
}
}
int lVertexCount = 0;
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
// The material for current face.
int lMaterialIndex = 0;
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
}
// Where should I save the vertex attribute index, according to the material
const int lIndexOffset = mSubMeshes[lMaterialIndex]->IndexOffset +
mSubMeshes[lMaterialIndex]->TriangleCount * 3;
for (int lVerticeIndex = 0; lVerticeIndex < TRIANGLE_VERTEX_COUNT; ++lVerticeIndex)
{
const int lControlPointIndex = pMesh->GetPolygonVertex(lPolygonIndex, lVerticeIndex);
if (mAllByControlPoint)
{
lIndices[lIndexOffset + lVerticeIndex] = static_cast<unsigned int>(lControlPointIndex);
}
// Populate the array with vertex attribute, if by polygon vertex.
else
{
lIndices[lIndexOffset + lVerticeIndex] = static_cast<unsigned int>(lVertexCount);
lCurrentVertex = lControlPoints[lControlPointIndex];
lVertices[lVertexCount * VERTEX_STRIDE] = static_cast<float>(lCurrentVertex[0]);
lVertices[lVertexCount * VERTEX_STRIDE + 1] = static_cast<float>(lCurrentVertex[1]);
lVertices[lVertexCount * VERTEX_STRIDE + 2] = static_cast<float>(lCurrentVertex[2]);
lVertices[lVertexCount * VERTEX_STRIDE + 3] = 1;
if (mHasNormal)
{
pMesh->GetPolygonVertexNormal(lPolygonIndex, lVerticeIndex, lCurrentNormal);
lNormals[lVertexCount * NORMAL_STRIDE] = static_cast<float>(lCurrentNormal[0]);
lNormals[lVertexCount * NORMAL_STRIDE + 1] = static_cast<float>(lCurrentNormal[1]);
lNormals[lVertexCount * NORMAL_STRIDE + 2] = static_cast<float>(lCurrentNormal[2]);
}
if (mHasUV)
{
bool lUnmappedUV;
pMesh->GetPolygonVertexUV(lPolygonIndex, lVerticeIndex, lUVName, lCurrentUV, lUnmappedUV);
lUVs[lVertexCount * UV_STRIDE] = static_cast<float>(lCurrentUV[0]);
lUVs[lVertexCount * UV_STRIDE + 1] = static_cast<float>(lCurrentUV[1]);
}
}
++lVertexCount;
}
mSubMeshes[lMaterialIndex]->TriangleCount += 1;
}
// Create VBOs
glGenBuffers(VBO_COUNT, mVBONames);
// Save vertex attributes into GPU
glBindBuffer(GL_ARRAY_BUFFER, mVBONames[VERTEX_VBO]);
glBufferData(GL_ARRAY_BUFFER, lPolygonVertexCount * VERTEX_STRIDE * sizeof(float), lVertices, GL_STATIC_DRAW);
delete[] lVertices;
if (mHasNormal)
{
glBindBuffer(GL_ARRAY_BUFFER, mVBONames[NORMAL_VBO]);
glBufferData(GL_ARRAY_BUFFER, lPolygonVertexCount * NORMAL_STRIDE * sizeof(float), lNormals, GL_STATIC_DRAW);
delete[] lNormals;
}
if (mHasUV)
{
glBindBuffer(GL_ARRAY_BUFFER, mVBONames[UV_VBO]);
glBufferData(GL_ARRAY_BUFFER, lPolygonVertexCount * UV_STRIDE * sizeof(float), lUVs, GL_STATIC_DRAW);
delete[] lUVs;
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mVBONames[INDEX_VBO]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, lPolygonCount * TRIANGLE_VERTEX_COUNT * sizeof(unsigned int), lIndices, GL_STATIC_DRAW);
delete[] lIndices;
return true;
}
//--------------------------------------------------------------
void ofxFBXMesh::setFBXMesh( FbxMesh* lMesh ) {
fbxMesh = lMesh;
// name = lMesh->GetName();
mesh.clear();
// from ViewScene Example included with the FBX SDK //
if (!lMesh->GetNode()) {
ofLogError("ofxFBXMesh") << " error setFBXMesh, lMesh->GetNode failed" << endl;
return;
}
const int lPolygonCount = lMesh->GetPolygonCount();
// Count the polygon count of each material
FbxLayerElementArrayTemplate<int>* lMaterialIndice = NULL;
FbxGeometryElement::EMappingMode lMaterialMappingMode = FbxGeometryElement::eNone;
if (lMesh->GetElementMaterial()) {
lMaterialIndice = &lMesh->GetElementMaterial()->GetIndexArray();
lMaterialMappingMode = lMesh->GetElementMaterial()->GetMappingMode();
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon) {
FBX_ASSERT(lMaterialIndice->GetCount() == lPolygonCount);
if (lMaterialIndice->GetCount() == lPolygonCount) {
// make sure the vector is setup and we have the proper amount of materials ready //
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex) {
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
if(lMaterialIndex >= 0) {
if (subMeshes.size() < lMaterialIndex + 1) {
subMeshes.resize(lMaterialIndex + 1);
}
}
}
// Count the faces of each material
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex) {
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
// cout << "lMaterialIndex = " << lMaterialIndex << " submesh.size = " << subMeshes.size() << endl;
if(lMaterialIndex >= 0 ) {
subMeshes[lMaterialIndex].triangleCount += 1;
}
}
// Record the offset (how many vertex)
const int lMaterialCount = subMeshes.size();
int lOffset = 0;
for (int lIndex = 0; lIndex < lMaterialCount; ++lIndex) {
subMeshes[lIndex].indexOffset = lOffset;
lOffset += subMeshes[lIndex].triangleCount * 3;
// subMeshes[lIndex].totalIndices = subMeshes[lIndex].triangleCount * 3;
// cout << "polygon: " << lIndex << " totalIndices = " << subMeshes[lIndex].totalIndices << endl;
// This will be used as counter in the following procedures, reset to zero
subMeshes[lIndex].triangleCount = 0;
}
FBX_ASSERT(lOffset == lPolygonCount * 3); // what?
}
}
}
if(subMeshes.size() == 0) {
subMeshes.resize(1);
}
// TODO: Account for if all mapping modes are not by control point //
bool bHasNormals = lMesh->GetElementNormalCount() > 0;
bool bMapNormalsByControlPoint = true;
bool bHasUvs = lMesh->GetElementUVCount() > 0;
bool bMapUvsByControlPoint = true;
// are the normals mapped by control point or by polygon?
FbxGeometryElement::EMappingMode lNormalMappingMode = FbxGeometryElement::eNone;
if(bHasNormals) {
lNormalMappingMode = lMesh->GetElementNormal(0)->GetMappingMode();
if (lNormalMappingMode == FbxGeometryElement::eNone) {
bHasNormals = false;
}
if (bHasNormals && lNormalMappingMode != FbxGeometryElement::eByControlPoint) {
bMapNormalsByControlPoint = false;
}
}
FbxGeometryElement::EMappingMode lUVMappingMode = FbxGeometryElement::eNone;
if (bHasUvs) {
lUVMappingMode = lMesh->GetElementUV(0)->GetMappingMode();
if (lUVMappingMode == FbxGeometryElement::eNone) {
bHasUvs = false;
}
if (bHasUvs && lUVMappingMode != FbxGeometryElement::eByControlPoint) {
bMapUvsByControlPoint = false;
}
}
bAllMappedByControlPoint = (bMapNormalsByControlPoint && bMapUvsByControlPoint);
// if(lMaterialMappingMode == FbxGeometryElement::eAllSame) {
//
// }
int lPolygonVertexCount = lMesh->GetControlPointsCount();
if( bAllMappedByControlPoint ) {
const FbxVector4 * lControlPoints = lMesh->GetControlPoints();
for(int i = 0; i < lMesh->GetControlPointsCount(); i++ ) {
mesh.addVertex( ofVec3f( lControlPoints[i][0], lControlPoints[i][1], lControlPoints[i][2] ) );
}
for(int i = 0; i < lMesh->GetPolygonCount(); i++ ) {
for (int lVerticeIndex = 0; lVerticeIndex < 3; ++lVerticeIndex) {
const int lControlPointIndex = lMesh->GetPolygonVertex(i, lVerticeIndex);
mesh.addIndex( lControlPointIndex );
}
}
if(subMeshes.size() == 1) {
subMeshes[0].totalIndices = mesh.getNumIndices();
}
// normals
if(bHasNormals) {
ofMesh normalsMesh;
//cout << "ofxFBXMesh :: we have normals for " << getName() << endl;
if(bMapNormalsByControlPoint) {
//cout << "ofxFBXMesh :: normals by control point for " << getName() << endl;
const FbxGeometryElementNormal * lNormalElement = lMesh->GetElementNormal(0);
for(int i = 0; i < lMesh->GetControlPointsCount(); i++ ) {
int lNormalIndex = i;
if (lNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect) {
lNormalIndex = lNormalElement->GetIndexArray().GetAt(i);
}
FbxVector4 lCurrentNormal = lNormalElement->GetDirectArray().GetAt(lNormalIndex);
normalsMesh.addNormal( ofVec3f(lCurrentNormal[0], lCurrentNormal[1], lCurrentNormal[2]) );
}
mesh.addNormals( normalsMesh.getNormals() );
}
}
// textures //
if(bHasUvs) {
//cout << "ofxFBXMesh :: we have tex coords for " << getName() << endl;
if(bMapUvsByControlPoint) {
//cout << "ofxFBXMesh :: tex coords by control point " << getName() << endl;
const FbxGeometryElementUV * lUVElement = lMesh->GetElementUV(0);
for(int i = 0; i < lMesh->GetControlPointsCount(); i++ ) {
int lUVIndex = i;
if (lUVElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect) {
lUVIndex = lUVElement->GetIndexArray().GetAt(i);
}
FbxVector2 lCurrentUV = lUVElement->GetDirectArray().GetAt(lUVIndex);
mesh.addTexCoord( ofVec2f(lCurrentUV[0], lCurrentUV[1]) );
}
}
}
} else {
// cout << "--- " << getName() << " mapped by polygons ---------------" << endl;
// cout << "numSubMeshes = " << subMeshes.size() << " polygon count = " << lPolygonCount << " control points = " << fbxMesh->GetControlPointsCount() << endl;
// if(lMaterialMappingMode == FbxGeometryElement::eNone) {
// cout << "Material mapping mode = none" << endl;
// } else if (lMaterialMappingMode == FbxGeometryElement::eByControlPoint) {
// cout << "Material mapping mode = eByControlPoint" << endl;
// } else if(lMaterialMappingMode == FbxGeometryElement::eByPolygonVertex) {
// cout << "Material mapping mode = eByPolygonVertex" << endl;
// } else if(lMaterialMappingMode == FbxGeometryElement::eByPolygon) {
// cout << "Material mapping mode = eByPolygon" << endl;
// } else if(lMaterialMappingMode == FbxGeometryElement::eByEdge) {
// cout << "Material mapping mode = eByEdge" << endl;
// } else if(lMaterialMappingMode == FbxGeometryElement::eAllSame) {
// cout << "Material mapping mode = eAllSame" << endl;
// }
//
// if(lMaterialIndice) {
// cout << "lMaterialIndice size = " << lMaterialIndice->GetCount() << endl;
// } else {
// cout << "did not get the lMaterialIndice" << endl;
// }
const FbxVector4 * lControlPoints = fbxMesh->GetControlPoints();
mesh.getVertices().resize( lPolygonCount * 3 );
mesh.getIndices().resize( lPolygonCount * 3 );
if(bHasNormals) {
mesh.getNormals().resize( lPolygonCount * 3 );
}
// cout << "Polygon vertex count = " << fbxMesh->GetPolygonVertexCount() << endl;
const char * lUVName = NULL;
FbxStringList lUVNames;
fbxMesh->GetUVSetNames(lUVNames);
if(bHasUvs && lUVNames.GetCount() ) {
mesh.getTexCoords().resize( lPolygonCount * 3 );
lUVName = lUVNames[0];
}
for(int i = 0; i < lUVNames.GetCount(); i++ ) {
// cout << "lUVName = " << lUVNames[0] << endl;
}
FbxVector4 lCurrentVertex;
FbxVector4 lCurrentNormal;
FbxVector2 lCurrentUV;
const FbxGeometryElementUV * lUVElement = lMesh->GetElementUV(0);
int lVertexCount = 0;
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex) {
// The material for current face.
int lMaterialIndex = 0;
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon) {
lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
if(lMaterialIndex < 0) {
lMaterialIndex = 0;
}
}
// Where should I save the vertex attribute index, according to the material
const int lIndexOffset = subMeshes[lMaterialIndex].indexOffset + subMeshes[lMaterialIndex].triangleCount * 3;
// const int lIndexOffset = fbxMesh->GetPolygonVertexIndex(lPolygonIndex);
for (int lVerticeIndex = 0; lVerticeIndex < 3; ++lVerticeIndex) {
const int lControlPointIndex = fbxMesh->GetPolygonVertex(lPolygonIndex, lVerticeIndex);
// Populate the array with vertex attribute, if by polygon vertex.
mesh.getIndices()[lIndexOffset + lVerticeIndex] = static_cast<unsigned int>(lVertexCount);
lCurrentVertex = lControlPoints[ lControlPointIndex ];
mesh.getVertices()[lVertexCount].set( lCurrentVertex[0], lCurrentVertex[1], lCurrentVertex[2] );
if (bHasNormals) {
if(fbxMesh->GetPolygonVertexNormal( lPolygonIndex, lVerticeIndex, lCurrentNormal )) {
int normalIndex = lVertexCount;
mesh.getNormals()[normalIndex].set( lCurrentNormal[0], lCurrentNormal[1], lCurrentNormal[2] );
}
}
if (bHasUvs) {
bool lUnmappedUV;
fbxMesh->GetPolygonVertexUV(lPolygonIndex, lVerticeIndex, lUVName, lCurrentUV, lUnmappedUV);
int tcoordIndex = lVertexCount;
mesh.getTexCoords()[ tcoordIndex ].set( lCurrentUV[0], lCurrentUV[1] );
}
++lVertexCount;
}
subMeshes[lMaterialIndex].triangleCount += 1;
subMeshes[lMaterialIndex].totalIndices += 3;
// cout << "materialIndex = " << lMaterialIndex << endl;
}
}
// All faces will use the same material.
// if ( subMeshes.size() == 1) {
// // meshMaterials.resize(1);
//// subMeshes[0].totalIndices = mesh.getNumIndices();
// }
for(int i = 0; i < subMeshes.size(); i++ ) {
// cout << i << " submesh totalindicies = " << subMeshes[i].totalIndices << " total verts = " << mesh.getNumVertices() << " polygonos = " << lPolygonCount << endl;
}
// cout << "--------------------------------------- " << endl << endl;
veebs.setMesh( mesh, GL_STREAM_DRAW );
original = mesh;
}
bool Mesh::init(FbxMesh* pFbxMesh)
{
uint32_t normalCount = pFbxMesh->GetElementNormalCount();
uint32_t uvCount = pFbxMesh->GetElementUVCount();
FbxGeometryElement::EMappingMode normalMappingMode = normalCount ? pFbxMesh->GetElementNormal(0)->GetMappingMode()
: FbxGeometryElement::eNone;
FbxGeometryElement::EMappingMode uvMappingModel = uvCount ? pFbxMesh->GetElementUV(0)->GetMappingMode()
: FbxGeometryElement::eNone;
bool hasNormal = normalMappingMode != FbxGeometryElement::eNone;
bool hasUV = uvMappingModel != FbxGeometryElement::eNone;
bool byControlPoint = hasNormal && normalMappingMode == FbxGeometryElement::eByControlPoint && hasUV && uvMappingModel == FbxGeometryElement::eByControlPoint;
uint32_t polygonCount = pFbxMesh->GetPolygonCount();
uint32_t controlPointCount = byControlPoint
? pFbxMesh->GetControlPointsCount()
: polygonCount * TRIANGLE_VERTEX_COUNT;
this->vertices.resize(controlPointCount * VERTEX_STRIDE);
this->indices.resize(polygonCount * TRIANGLE_VERTEX_COUNT);
if (hasNormal)
this->normals.resize(controlPointCount * NORMAL_STRIDE);
FbxStringList uvNames;
pFbxMesh->GetUVSetNames(uvNames);
const char* pUVName = nullptr;
if (hasUV) {
this->uvs.resize(controlPointCount * UV_STRIDE);
pUVName = uvNames[0];
}
/* Vertex Attributes */
const FbxVector4* pControlPoints = pFbxMesh->GetControlPoints();
FbxVector4 currentVertex;
FbxVector4 currentNormal;
FbxVector2 currentUV;
if (byControlPoint) {
const FbxGeometryElementNormal* pNormalElement = nullptr;
const FbxGeometryElementUV* pUVElement = nullptr;
if (hasNormal)
pNormalElement = pFbxMesh->GetElementNormal(0);
if (hasUV)
pUVElement = pFbxMesh->GetElementUV(0);
for (uint32_t i = 0; i < controlPointCount; ++i) {
currentVertex = pControlPoints[i];
this->vertices[i * VERTEX_STRIDE] = static_cast<float>(currentVertex[0]);
this->vertices[i * VERTEX_STRIDE + 1] = static_cast<float>(currentVertex[1]);
this->vertices[i * VERTEX_STRIDE + 2] = static_cast<float>(currentVertex[2]);
this->vertices[i * VERTEX_STRIDE + 3] = 1.0f;
if (hasNormal) {
int normalIndex = i;
if (pNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect) {
normalIndex = pNormalElement->GetIndexArray().GetAt(i);
}
currentNormal = pNormalElement->GetDirectArray().GetAt(normalIndex);
this->normals[i * NORMAL_STRIDE] = static_cast<float>(currentNormal[0]);
this->normals[i * NORMAL_STRIDE + 1] = static_cast<float>(currentNormal[1]);
this->normals[i * NORMAL_STRIDE + 2] = static_cast<float>(currentNormal[2]);
}
if (hasUV) {
int uvIndex = i;
if (pUVElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect) {
uvIndex = pUVElement->GetIndexArray().GetAt(i);
}
currentUV = pUVElement->GetDirectArray().GetAt(uvIndex);
this->uvs[i * UV_STRIDE] = static_cast<float>(currentUV[0]);
this->uvs[i * UV_STRIDE + 1] = static_cast<float>(currentUV[1]);
}
}
} // end of byControlPoint
/* Slice the mesh according to materials */
FbxLayerElementArrayTemplate<int>* pMaterialIndices = nullptr;
FbxGeometryElement::EMappingMode materialMappingMode = FbxGeometryElement::eNone;
if (pFbxMesh->GetElementMaterial()) {
pMaterialIndices = &pFbxMesh->GetElementMaterial()->GetIndexArray();
materialMappingMode = pFbxMesh->GetElementMaterial()->GetMappingMode();
if (pMaterialIndices && materialMappingMode == FbxGeometryElement::eByPolygon) {
FBX_ASSERT(pMaterialIndices->GetCount() == polygonCount);
for (uint32_t i = 0; i < polygonCount; ++i) {
const uint32_t materialIndex = pMaterialIndices->GetAt(i);
if (materialIndex >= slices.size()) // we meet a new material
{
slices.emplace_back(0, 0);
}
slices[materialIndex].triangleCount += 1;
}
int offset = 0;
for (uint32_t i = 0; i < slices.size(); ++i) {
slices[i].indexOffset = offset;
offset += slices[i].triangleCount * 3;
// this will be reused during per-Polygon processing
slices[i].triangleCount = 0;
}
FBX_ASSERT(offset == polygonCount * 3);
}
}
// There is only one material.
if (slices.size() == 0) {
slices.emplace_back(0, 0);
}
/* Indices */
for (uint32_t vertexCount = 0, i = 0; i < polygonCount; ++i) {
int materialIndex = 0;
if (pMaterialIndices && materialMappingMode == FbxGeometryElement::eByPolygon) {
materialIndex = pMaterialIndices->GetAt(i);
}
const int indexOffset = slices[materialIndex].indexOffset + slices[materialIndex].triangleCount * 3;
for (int v = 0; v < TRIANGLE_VERTEX_COUNT; ++v) {
const int controlPointIndex = pFbxMesh->GetPolygonVertex(i, v);
if (byControlPoint) {
this->indices[indexOffset + v] = static_cast<unsigned int>(controlPointIndex);
} else {
this->indices[indexOffset + v] = static_cast<unsigned int>(vertexCount);
currentVertex = pControlPoints[controlPointIndex];
this->vertices[vertexCount * VERTEX_STRIDE] = static_cast<float>(currentVertex[0]);
this->vertices[vertexCount * VERTEX_STRIDE + 1] = static_cast<float>(currentVertex[1]);
this->vertices[vertexCount * VERTEX_STRIDE + 2] = static_cast<float>(currentVertex[2]);
this->vertices[vertexCount * VERTEX_STRIDE + 3] = 1.0f;
if (hasNormal) {
pFbxMesh->GetPolygonVertexNormal(i, v, currentNormal);
this->normals[vertexCount * NORMAL_STRIDE] = static_cast<float>(currentNormal[0]);
this->normals[vertexCount * NORMAL_STRIDE + 1] = static_cast<float>(currentNormal[1]);
this->normals[vertexCount * NORMAL_STRIDE + 2] = static_cast<float>(currentNormal[2]);
}
if (hasUV) {
bool bUnmappedUV;
pFbxMesh->GetPolygonVertexUV(i, v, pUVName, currentUV, bUnmappedUV);
this->uvs[vertexCount * UV_STRIDE] = static_cast<float>(currentUV[0]);
this->uvs[vertexCount * UV_STRIDE] = static_cast<float>(currentUV[1]);
}
}
++vertexCount;
}
slices[materialIndex].triangleCount += 1;
}
return true;
}
bool FillData(ModelData* someData,FbxNode* aNode, AnimationData* aAnimation)
{
FbxMesh* mesh = aNode->GetMesh();
if (mesh == nullptr || !aNode)
return false;
const int lPolygonCount = mesh->GetPolygonCount();
// Count the polygon count of each material
FbxLayerElementArrayTemplate<int>* lMaterialIndice = NULL;
FbxGeometryElement::EMappingMode lMaterialMappingMode = FbxGeometryElement::eNone;
if (mesh->GetElementMaterial())
{
lMaterialIndice = &mesh->GetElementMaterial()->GetIndexArray();
lMaterialMappingMode = mesh->GetElementMaterial()->GetMappingMode();
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
FBX_ASSERT(lMaterialIndice->GetCount() == lPolygonCount);
if (lMaterialIndice->GetCount() == lPolygonCount)
{
// Count the faces of each material
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
lMaterialIndex;
/*if (someData->mSubMeshes[lMaterialIndex] == NULL)
{
someData->mSubMeshes[lMaterialIndex] = new ModelData::SubMesh;
}
someData->mSubMeshes[lMaterialIndex]->TriangleCount += 1;*/
}
// Make sure we have no "holes" (NULL) in the mSubMeshes table. This can happen
// if, in the loop above, we resized the mSubMeshes by more than one slot.
/*for (int i = 0; i < someData->mSubMeshes.Count(); i++)
{
if (someData->mSubMeshes[i] == NULL)
someData->mSubMeshes[i] = new ModelData::SubMesh;
}*/
// Record the offset (how many vertex)
const int lMaterialCount = someData->mSubMeshes.Size();
lMaterialCount;
int lOffset = 0;
/*for (int lIndex = 0; lIndex < lMaterialCount; ++lIndex)
{
someData->mSubMeshes[lIndex]->IndexOffset = lOffset;
lOffset += someData->mSubMeshes[lIndex]->TriangleCount * 3;
// This will be used as counter in the following procedures, reset to zero
someData->mSubMeshes[lIndex]->TriangleCount = 0;
}*/
FBX_ASSERT(lOffset == lPolygonCount * 3);
}
}
}
// All faces will use the same material.
if (someData->mSubMeshes.Size() == 0)
{
if (someData->mSubMeshes.GetCapacity() == 0)
{
someData->mSubMeshes.Init(1);
}
someData->mSubMeshes.RemoveAll();
someData->mSubMeshes.AddEmptyObject();
someData->mSubMeshes[0] = new ModelData::SubMesh();
}
bool hasNormalMap = false;
const int lMaterialCount = aNode->GetMaterialCount();
for (int lMaterialIndex = 0; lMaterialIndex < lMaterialCount; ++lMaterialIndex)
{
FbxSurfaceMaterial * lMaterial = aNode->GetMaterial(lMaterialIndex);
if (lMaterial && !lMaterial->GetUserDataPtr())
{
TextureInfo diffuseInfo;
GetMaterialProperty(lMaterial,FbxSurfaceMaterial::sDiffuse,FbxSurfaceMaterial::sDiffuseFactor,diffuseInfo.myFileName);
diffuseInfo.myType = DIFFUSE;
if(diffuseInfo.myFileName.empty() == false)
{
someData->myTextures.push_back(diffuseInfo);
}
TextureInfo normalInfo;
GetMaterialProperty(lMaterial,FbxSurfaceMaterial::sNormalMap,FbxSurfaceMaterial::sBumpFactor,normalInfo.myFileName);
hasNormalMap = normalInfo.myFileName.empty() == false;
normalInfo.myType = NORMALMAP;
if(normalInfo.myFileName.empty() == false)
{
someData->myTextures.push_back(normalInfo);
hasNormalMap = true;
}
TextureInfo roughnessInfo;
GetMaterialProperty(lMaterial,FbxSurfaceMaterial::sSpecular,FbxSurfaceMaterial::sSpecularFactor,roughnessInfo.myFileName);
roughnessInfo.myType = ROUGHNESS;
if(roughnessInfo.myFileName.empty() == false)
{
someData->myTextures.push_back(roughnessInfo);
}
TextureInfo substanceInfo;
GetMaterialProperty(lMaterial,FbxSurfaceMaterial::sReflection,FbxSurfaceMaterial::sReflectionFactor,substanceInfo.myFileName);
substanceInfo.myType = SUBSTANCE;
if(substanceInfo.myFileName.empty() == false)
{
someData->myTextures.push_back(substanceInfo);
}
TextureInfo ambientInfo;
GetMaterialProperty(lMaterial, FbxSurfaceMaterial::sAmbient, FbxSurfaceMaterial::sAmbientFactor, ambientInfo.myFileName);
ambientInfo.myType = AO;
if (substanceInfo.myFileName.empty() == false)
{
someData->myTextures.push_back(ambientInfo);
}
}
}
// Congregate all the data of a mesh to be cached in VBOs.
// If normal or UV is by polygon vertex, record all vertex attributes by polygon vertex.'
someData->mHasNormal = mesh->GetElementNormalCount() > 0;
someData->mHasUV = mesh->GetElementUVCount() > 0;
someData->myHasBiNormal = mesh->GetElementBinormalCount() > 0;
FbxSkin * lSkinDeformer = (FbxSkin *)mesh->GetDeformer(0, FbxDeformer::eSkin);
someData->myHasSkinweights = lSkinDeformer != nullptr;
if(hasNormalMap && someData->myHasBiNormal == false)
{
mesh->GenerateTangentsDataForAllUVSets();
someData->myHasBiNormal = mesh->GetElementBinormalCount() > 0;
}
someData->myHasTangents = mesh->GetElementTangentCount() > 0;
FbxGeometryElement::EMappingMode lNormalMappingMode = FbxGeometryElement::eNone;
FbxGeometryElement::EMappingMode lUVMappingMode = FbxGeometryElement::eNone;
if (someData->mHasNormal)
{
lNormalMappingMode = mesh->GetElementNormal(0)->GetMappingMode();
if (lNormalMappingMode == FbxGeometryElement::eNone)
{
someData->mHasNormal = false;
}
if (someData->mHasNormal && lNormalMappingMode != FbxGeometryElement::eByControlPoint)
{
someData->mAllByControlPoint = false;
}
}
if (someData->mHasUV)
{
lUVMappingMode = mesh->GetElementUV(0)->GetMappingMode();
if (lUVMappingMode == FbxGeometryElement::eNone)
{
someData->mHasUV = false;
}
if (someData->mHasUV && lUVMappingMode != FbxGeometryElement::eByControlPoint)
{
someData->mAllByControlPoint = false;
}
}
// Allocate the array memory, by control point or by polygon vertex.
int lPolygonVertexCount = mesh->GetControlPointsCount();
//if (!someData->my)
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_POS;
newLayout.mySize = VERTEX_STRIDE;
newLayout.myOffset = 0;
someData->myLayout.Add(newLayout);
lPolygonVertexCount = lPolygonCount * TRIANGLE_VERTEX_COUNT;
}
int stride = VERTEX_STRIDE;
size_t size = lPolygonVertexCount * VERTEX_STRIDE;
//float * lVertices = new float[lPolygonVertexCount * VERTEX_STRIDE];
unsigned int * lIndices = new unsigned int[lPolygonCount * TRIANGLE_VERTEX_COUNT];
someData->myIndexCount = lPolygonCount * TRIANGLE_VERTEX_COUNT;
//float * lNormals = NULL;
if (someData->mHasNormal)
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_NORMAL;
newLayout.mySize = NORMAL_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += NORMAL_STRIDE;
size += lPolygonVertexCount * NORMAL_STRIDE;
//lNormals = new float[lPolygonVertexCount * NORMAL_STRIDE];
}
//float * lUVs = NULL;
FbxStringList lUVNames;
mesh->GetUVSetNames(lUVNames);
const char * lUVName = NULL;
if (someData->mHasUV && lUVNames.GetCount())
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_UV;
newLayout.mySize = UV_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += UV_STRIDE;
size += lPolygonVertexCount * UV_STRIDE;
//lUVs = new float[lPolygonVertexCount * UV_STRIDE];
lUVName = lUVNames[0];
}
if (someData->myHasBiNormal)
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_BINORMAL;
newLayout.mySize = BINORMAL_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += BINORMAL_STRIDE;
size += lPolygonVertexCount * BINORMAL_STRIDE;
//lUVs = new float[lPolygonVertexCount * UV_STRIDE];
}
if (someData->myHasTangents)
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_TANGENT;
newLayout.mySize = TANGENT_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += TANGENT_STRIDE;
size += lPolygonVertexCount * TANGENT_STRIDE;
//lUVs = new float[lPolygonVertexCount * UV_STRIDE];
}
if (someData->myHasSkinweights)
{
ModelData::Layout newLayout;
newLayout.myType = ModelData::VERTEX_SKINWEIGHTS;
newLayout.mySize = SKINWEIGHT_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += SKINWEIGHT_STRIDE;
size += lPolygonVertexCount * SKINWEIGHT_STRIDE;
newLayout.myType = ModelData::VERTEX_BONEID;
newLayout.mySize = BONEID_STRIDE;
newLayout.myOffset = stride*4;
someData->myLayout.Add(newLayout);
stride += BONEID_STRIDE;
size += lPolygonVertexCount * BONEID_STRIDE;
//lUVs = new float[lPolygonVertexCount * UV_STRIDE];
}
float * lVertices = new float[size];
FbxAMatrix globalPos;
FbxVector4* weights = nullptr;
FbxVectorTemplate4<int>* bones = nullptr;
FbxTime time = static_cast<FbxTime>(0.0f);
if(someData->myHasSkinweights)
{
weights = new FbxVector4[mesh->GetControlPointsCount()];
bones = new FbxVectorTemplate4<int>[mesh->GetControlPointsCount()];
ComputeLinearDeformation(globalPos,mesh,weights,bones,aAnimation);
}
const FbxGeometryElementBinormal * lBiNormalElement = NULL;
const FbxGeometryElementTangent * lTangentElement = NULL;
if (someData->myHasBiNormal)
{
lBiNormalElement = mesh->GetElementBinormal(0);
}
if (someData->myHasTangents)
{
lTangentElement = mesh->GetElementTangent(0);
}
// Populate the array with vertex attribute, if by control point.
const FbxVector4 * lControlPoints = mesh->GetControlPoints();
FbxVector4 lCurrentVertex;
FbxVector4 lCurrentNormal;
FbxVector4 lCurrentBiNormal;
FbxVector4 lCurrentTangent;
FbxVector2 lCurrentUV;
if (someData->mAllByControlPoint)
{
const FbxGeometryElementNormal * lNormalElement = NULL;
const FbxGeometryElementUV * lUVElement = NULL;
if (someData->mHasNormal)
{
lNormalElement = mesh->GetElementNormal(0);
}
if (someData->mHasUV)
{
lUVElement = mesh->GetElementUV(0);
}
for (int lIndex = 0; lIndex < lPolygonVertexCount; ++lIndex)
{
int currentIndex = lIndex * stride;
int addedSize = VERTEX_STRIDE;
// Save the vertex position.
lCurrentVertex = lControlPoints[lIndex];
CU::Vector4f position(static_cast<float>(lCurrentVertex[0]),
static_cast<float>(lCurrentVertex[1]),
static_cast<float>(lCurrentVertex[2]),
1);
CU::Matrix44f fixMatrix;
fixMatrix = CU::Matrix44<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1,0,0));
position = position*fixMatrix;
lVertices[currentIndex] = position.x;
lVertices[currentIndex + 1] = position.y;
lVertices[currentIndex + 2] = position.z;
lVertices[currentIndex + 3] = 1;
// Save the normal.
if (someData->mHasNormal)
{
int lNormalIndex = lIndex;
if (lNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lNormalIndex = lNormalElement->GetIndexArray().GetAt(lIndex);
}
lCurrentNormal = lNormalElement->GetDirectArray().GetAt(lNormalIndex);
CU::Vector3f normal( static_cast<float>(lCurrentNormal[0]), static_cast<float>(lCurrentNormal[1]), static_cast<float>(lCurrentNormal[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += NORMAL_STRIDE;
}
// Save the UV.
if (someData->mHasUV)
{
int lUVIndex = lIndex;
if (lUVElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lUVIndex = lUVElement->GetIndexArray().GetAt(lIndex);
}
lCurrentUV = lUVElement->GetDirectArray().GetAt(lUVIndex);
lVertices[currentIndex + addedSize] = static_cast<float>(lCurrentUV[0]);
lVertices[currentIndex + addedSize + 1] = static_cast<float>(lCurrentUV[1])*-1.0f;
addedSize += 2;
}
if (someData->myHasBiNormal)
{
int lBinormIndexIndex = lIndex;
if (lBiNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lBinormIndexIndex = lBiNormalElement->GetIndexArray().GetAt(lIndex);
}
lCurrentBiNormal = lBiNormalElement->GetDirectArray().GetAt(lBinormIndexIndex);
//mesh->GetElementBinormal(lPolygonIndex, lVerticeIndex, lCurrentNormal);
//lCurrentNormal = lCurrentNormal
CU::Vector3f normal( static_cast<float>(lCurrentBiNormal[0]), static_cast<float>(lCurrentBiNormal[1]), static_cast<float>(lCurrentBiNormal[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
if (CU::Length(normal) != 0.f)
CU::Normalize(normal);
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += BINORMAL_STRIDE;
}
if (someData->myHasTangents)
{
int lBinormIndexIndex = lIndex;
if (lTangentElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lBinormIndexIndex = lTangentElement->GetIndexArray().GetAt(lIndex);
}
lCurrentTangent = lTangentElement->GetDirectArray().GetAt(lBinormIndexIndex);
//lCurrentNormal = lCurrentNormal
CU::Vector3f normal( static_cast<float>(lCurrentTangent[0]), static_cast<float>(lCurrentTangent[1]), static_cast<float>(lCurrentTangent[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
if (CU::Length(normal) != 0.f)
CU::Normalize(normal);
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += TANGENT_STRIDE;
}
if(someData->myHasSkinweights)
{
FbxVector4 currentWeights = weights[lIndex];
//currentWeights.Normalize();
lVertices[currentIndex + addedSize] = static_cast<float>(currentWeights[0]);
lVertices[currentIndex + addedSize + 1] = static_cast<float>(currentWeights[1]);
lVertices[currentIndex + addedSize + 2] = static_cast<float>(currentWeights[2]);
lVertices[currentIndex + addedSize + 3] = static_cast<float>(currentWeights[3]);
addedSize += SKINWEIGHT_STRIDE;
FbxVectorTemplate4<int> currentBones = bones[lIndex];
lVertices[currentIndex + addedSize] = static_cast<float>(currentBones[0]);
lVertices[currentIndex + addedSize + 1] = static_cast<float>(currentBones[1]);
lVertices[currentIndex + addedSize + 2] = static_cast<float>(currentBones[2]);
lVertices[currentIndex + addedSize + 3] = static_cast<float>(currentBones[3]);
addedSize += BONEID_STRIDE;
}
}
}
int lVertexCount = 0;
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
// The material for current face.
int lMaterialIndex = 0;
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
}
// Where should I save the vertex attribute index, according to the material
const int lIndexOffset = someData->mSubMeshes[lMaterialIndex]->IndexOffset +
someData->mSubMeshes[lMaterialIndex]->TriangleCount * 3;
for (int lVerticeIndex = TRIANGLE_VERTEX_COUNT-1; lVerticeIndex > -1; --lVerticeIndex)
{
const int lControlPointIndex = mesh->GetPolygonVertex(lPolygonIndex, lVerticeIndex);
int vertexIndex = lIndexOffset + (TRIANGLE_VERTEX_COUNT-1) - lVerticeIndex;
if (someData->mAllByControlPoint)
{
lIndices[vertexIndex] = static_cast<unsigned int>(lControlPointIndex);
}
// Populate the array with vertex attribute, if by polygon vertex.
else
{
lIndices[vertexIndex] = static_cast<unsigned int>(lVertexCount);
lCurrentVertex = lControlPoints[lControlPointIndex];
int addedSize = VERTEX_STRIDE;
int currentIndex = lVertexCount * stride;
CU::Vector4f position(static_cast<float>(lCurrentVertex[0]),
static_cast<float>(lCurrentVertex[1]),
static_cast<float>(lCurrentVertex[2]),
1);
//fixMatrix
CU::Matrix44f fixMatrix;
fixMatrix = CU::Matrix44<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
position = position*fixMatrix;
lVertices[currentIndex] = position.x;
lVertices[currentIndex + 1] = position.y;
lVertices[currentIndex + 2] = position.z;
lVertices[currentIndex + 3] = 0;
if (someData->mHasNormal)
{
mesh->GetPolygonVertexNormal(lPolygonIndex, lVerticeIndex, lCurrentNormal);
CU::Vector3f normal( static_cast<float>(lCurrentNormal[0]), static_cast<float>(lCurrentNormal[1]), static_cast<float>(lCurrentNormal[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
if (CU::Length(normal) != 0.f)
CU::Normalize(normal);
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += NORMAL_STRIDE;
}
if (someData->mHasUV)
{
bool lUnmappedUV;
mesh->GetPolygonVertexUV(lPolygonIndex, lVerticeIndex, lUVName, lCurrentUV, lUnmappedUV);
lVertices[currentIndex + addedSize] = static_cast<float>(lCurrentUV[0]);
lVertices[currentIndex + addedSize + 1] = static_cast<float>(lCurrentUV[1])*-1.0f;
addedSize += UV_STRIDE;
}
if (someData->myHasBiNormal)
{
int lBinormIndexIndex = lVerticeIndex;
if (lBiNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lBinormIndexIndex = lBiNormalElement->GetIndexArray().GetAt(lVerticeIndex);
}
lCurrentBiNormal = lBiNormalElement->GetDirectArray().GetAt(lBinormIndexIndex);
CU::Vector3f normal( static_cast<float>(lCurrentBiNormal[0]), static_cast<float>(lCurrentBiNormal[1]), static_cast<float>(lCurrentBiNormal[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
if (CU::Length(normal) != 0.f)
CU::Normalize(normal);
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += BINORMAL_STRIDE;
}
if (someData->myHasTangents)
{
int lBinormIndexIndex = lVerticeIndex;
if (lTangentElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lBinormIndexIndex = lTangentElement->GetIndexArray().GetAt(lVerticeIndex);
}
lCurrentTangent = lTangentElement->GetDirectArray().GetAt(lBinormIndexIndex);
mesh->GetPolygonVertexNormal(lPolygonIndex, lVerticeIndex, lCurrentNormal);
CU::Vector3f normal( static_cast<float>(lCurrentTangent[0]), static_cast<float>(lCurrentTangent[1]), static_cast<float>(lCurrentTangent[2]));
normal = normal*CU::Matrix33<float>::CreateReflectionMatrixAboutAxis(CU::Vector3f(1, 0, 0));
if (CU::Length(normal) != 0.f)
CU::Normalize(normal);
lVertices[currentIndex + addedSize] = normal.x;
lVertices[currentIndex + addedSize + 1] = normal.y;
lVertices[currentIndex + addedSize + 2] = normal.z;
lVertices[currentIndex + addedSize + 3] = 0;
addedSize += TANGENT_STRIDE;
}
if(someData->myHasSkinweights)
{
FbxVector4 currentWeights = weights[lControlPointIndex];
FbxVectorTemplate4<int> currentBones = bones[lControlPointIndex];
for(int l = 0;l < 4;++l)
{
if(currentBones[l] == -1)
{
currentWeights[l] = 0.0f;
}
}
currentWeights.Normalize();
lVertices[currentIndex + addedSize] = static_cast<float>(currentWeights[0]);
lVertices[currentIndex + addedSize + 1] = static_cast<float>(currentWeights[1]);
lVertices[currentIndex + addedSize + 2] = static_cast<float>(currentWeights[2]);
lVertices[currentIndex + addedSize + 3] = static_cast<float>(currentWeights[3]);
addedSize += SKINWEIGHT_STRIDE;
lVertices[currentIndex + addedSize] = *(float*)¤tBones[0];
lVertices[currentIndex + addedSize + 1] = *(float*)¤tBones[1];
lVertices[currentIndex + addedSize + 2] = *(float*)¤tBones[2];
lVertices[currentIndex + addedSize + 3] = *(float*)¤tBones[3];
addedSize += BONEID_STRIDE;
}
}
++lVertexCount;
}
someData->mSubMeshes[lMaterialIndex]->TriangleCount += 1;
}
someData->myVertexCount = lVertexCount;
someData->myVertexStride = stride;
someData->myVertexBuffer = lVertices;
someData->myIndicies = lIndices;
if(weights)
{
delete [] weights;
delete [] bones;
}
return true;
}
Submesh *FBX::buildSubmeshFromFBX(FbxMesh *lMesh, int material_index, bool single_material) {
int lPolygonCount=lMesh->GetPolygonCount();
FbxLayerElementArrayTemplate<int>* lMaterialIndice = NULL;
bool add=false;
if (!single_material) {
FbxGeometryElement::EMappingMode lMaterialMappingMode = FbxGeometryElement::eNone;
if (lMesh->GetElementMaterial()) {
lMaterialIndice = &lMesh->GetElementMaterial()->GetIndexArray();
lMaterialMappingMode = lMesh->GetElementMaterial()->GetMappingMode();
if (!lMaterialIndice) printf("Mesh has no material index element.\n");
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon) {
if (lMaterialIndice->GetCount() == lPolygonCount) {
add = true;
}
}
}
}
else add = true;
if (add) {
vector<Vertex *> new_vertices;
vector<Vector3> new_faces;
int control_points_count=lMesh->GetControlPointsCount();
FbxVector4 *control_points=lMesh->GetControlPoints();
int vertex_index = 0;
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex) {
if (lMaterialIndice) {
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
if (lMaterialIndex != material_index) continue;
}
int polygon_size=lMesh->GetPolygonSize(lPolygonIndex);
if (polygon_size == 3) {
Vector3 face;
for (int j=0; j<polygon_size; j++) {
Vertex *vertex=new Vertex();
int control_point_index=lMesh->GetPolygonVertex(lPolygonIndex, j);
FbxVector4 control_point=control_points[control_point_index];
vertex->setPosition(Vector3(control_point[0], control_point[2], -control_point[1]));
// Get Normal for Vertex
FbxVector4 normal;
lMesh->GetPolygonVertexNormal(lPolygonIndex, j, normal);
vertex->setNormal(Vector3(normal[0], normal[2], -normal[1]));
// Get UVs for Vertex
FbxStringList uv_sets;
lMesh->GetUVSetNames(uv_sets);
for (int set=0; set<uv_sets.GetCount(); set++) {
if (set >= 4) break;
FbxVector2 uv;
bool no_uv;
lMesh->GetPolygonVertexUV(lPolygonIndex, j, uv_sets[set].Buffer(), uv, no_uv);
vertex->setUV(Vector2(uv[0], 1.0 - uv[1]), set);
}
// Get Vertex Color for Vertex
FbxColor vtx_c(1.0, 1.0, 1.0, 1.0);
for (int l = 0; l < lMesh->GetElementVertexColorCount(); l++) {
FbxGeometryElementVertexColor* leVtxc = lMesh->GetElementVertexColor(l);
if (leVtxc->GetMappingMode() == FbxGeometryElement::eByControlPoint) {
if (leVtxc->GetReferenceMode() == FbxGeometryElement::eDirect) {
vtx_c = leVtxc->GetDirectArray().GetAt(control_point_index);
}
else if (leVtxc->GetReferenceMode() == FbxGeometryElement::eIndexToDirect) {
int id = leVtxc->GetIndexArray().GetAt(control_point_index);
vtx_c = leVtxc->GetDirectArray().GetAt(id);
}
}
else if (leVtxc->GetMappingMode() == FbxGeometryElement::eByPolygonVertex) {
if (leVtxc->GetReferenceMode() == FbxGeometryElement::eDirect) {
vtx_c = leVtxc->GetDirectArray().GetAt(vertex_index);
}
else if (leVtxc->GetReferenceMode() == FbxGeometryElement::eIndexToDirect) {
int id = leVtxc->GetIndexArray().GetAt(vertex_index);
vtx_c = leVtxc->GetDirectArray().GetAt(id);
}
}
}
vertex->setColor(Color(vtx_c.mRed, vtx_c.mGreen, vtx_c.mBlue, vtx_c.mAlpha));
if (j == 0) face.x=new_vertices.size();
if (j == 1) face.y=new_vertices.size();
if (j == 2) face.z=new_vertices.size();
new_vertices.push_back(vertex);
vertex_index++;
}
new_faces.push_back(face);
}
else printf("Unsupported polygon size %d.\n", polygon_size);
}
printf("Building submesh with %d vertices and %d faces\n", new_vertices.size(), new_faces.size());
if ((new_vertices.size() >= 3) && new_faces.size()) {
Submesh *submesh=new Submesh();
submesh->build(new_vertices, new_faces);
submesh->addBone(0);
VertexFormat *vertex_format=new VertexFormat(LIBGENS_VERTEX_FORMAT_PC);
submesh->setVertexFormat(vertex_format);
return submesh;
}
}
return NULL;
}
FBXMesh::Builder::MeshMetaData::MeshMetaData(FbxMesh const* mesh, unsigned int vaoOffset)
: mesh(mesh),
vaoOffset(vaoOffset),
hasNormals(false),
hasUvs(false)
{
if (!mesh->GetNode())
return;
const int lPolygonCount = mesh->GetPolygonCount();
// Count the polygon count of each material -> split up in submeshes
FbxLayerElementArrayTemplate<int>* lMaterialIndice = NULL;
FbxGeometryElement::EMappingMode lMaterialMappingMode = FbxGeometryElement::eNone;
if (mesh->GetElementMaterial())
{
lMaterialIndice = &mesh->GetElementMaterial()->GetIndexArray();
lMaterialMappingMode = mesh->GetElementMaterial()->GetMappingMode();
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
FBX_ASSERT(lMaterialIndice->GetCount() == lPolygonCount);
if (lMaterialIndice->GetCount() == lPolygonCount)
{
// Count the faces of each material
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
const int lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
if (subMeshMetaData.size() < lMaterialIndex + 1)
{
subMeshMetaData.resize(lMaterialIndex + 1);
}
subMeshMetaData[lMaterialIndex].triangleCount += 1;
}
// Make sure we have no "holes" (NULL) in the mSubMeshes table. This can happen
// if, in the loop above, we resized the mSubMeshes by more than one slot.
//for (int i = 0; i < subMeshMetaData.size(); i++)
//{
// if (subMeshMetaData[i] == NULL)
// mSubMeshes[i] = new SubMesh;
//}
// Record the offset (how many vertex)
const int lMaterialCount = (int)subMeshMetaData.size();
int lOffset = 0;
for (int lIndex = 0; lIndex < lMaterialCount; ++lIndex)
{
subMeshMetaData[lIndex].indexOffset = lOffset;
lOffset += subMeshMetaData[lIndex].triangleCount * 3;
// This will be used as counter in the following procedures, reset to zero
subMeshMetaData[lIndex].triangleCount = 0;
}
FBX_ASSERT(lOffset == lPolygonCount * 3);
}
}
}
// All faces will use the same material.
if (subMeshMetaData.size() == 0)
{
subMeshMetaData.resize(1);
}
hasNormals = mesh->GetElementNormalCount() > 0;
hasUvs = mesh->GetElementUVCount() > 0;
allByControlPoint = true;
// Congregate all the data of a mesh to be cached.
// If normal or UV is by polygon vertex, record all vertex attributes by polygon vertex.
FbxGeometryElement::EMappingMode lNormalMappingMode = FbxGeometryElement::eNone;
FbxGeometryElement::EMappingMode lUVMappingMode = FbxGeometryElement::eNone;
if (hasNormals)
{
lNormalMappingMode = mesh->GetElementNormal(0)->GetMappingMode();
if (lNormalMappingMode == FbxGeometryElement::eNone)
{
hasNormals = false;
}
if (hasNormals && lNormalMappingMode != FbxGeometryElement::eByControlPoint)
{
allByControlPoint = false;
}
}
if (hasUvs)
{
lUVMappingMode = mesh->GetElementUV(0)->GetMappingMode();
if (lUVMappingMode == FbxGeometryElement::eNone)
{
hasUvs = false;
}
if (hasUvs && lUVMappingMode != FbxGeometryElement::eByControlPoint)
{
allByControlPoint = false;
}
}
// Allocate the array memory, by control point or by polygon vertex.
int lPolygonVertexCount = mesh->GetControlPointsCount();
if (!allByControlPoint)
{
lPolygonVertexCount = lPolygonCount * TRIANGLE_VERTEX_COUNT;
}
vertices.resize(lPolygonVertexCount);
indices.resize(lPolygonCount * TRIANGLE_VERTEX_COUNT);
float * lNormals = NULL;
if (hasNormals)
{
normals.resize(lPolygonVertexCount);
}
float * lUVs = NULL;
FbxStringList lUVNames;
mesh->GetUVSetNames(lUVNames);
const char * lUVName = NULL;
if (hasUvs && lUVNames.GetCount())
{
uvs.resize(lPolygonVertexCount);
lUVName = lUVNames[0];
}
// Populate the array with vertex attribute, if by control point.
const FbxVector4 * lControlPoints = mesh->GetControlPoints();
FbxVector4 lCurrentVertex;
FbxVector4 lCurrentNormal;
FbxVector2 lCurrentUV;
if (allByControlPoint)
{
const FbxGeometryElementNormal * lNormalElement = NULL;
const FbxGeometryElementUV * lUVElement = NULL;
if (hasNormals)
{
lNormalElement = mesh->GetElementNormal(0);
}
if (hasUvs)
{
lUVElement = mesh->GetElementUV(0);
}
for (int lIndex = 0; lIndex < lPolygonVertexCount; ++lIndex)
{
// Save the vertex position.
lCurrentVertex = lControlPoints[lIndex];
vertices[lIndex] = glm::vec3(static_cast<float>(lCurrentVertex[0]),
static_cast<float>(lCurrentVertex[1]),
static_cast<float>(lCurrentVertex[2]));
modelSpaceAABB.merge(vertices[lIndex]);
// Save the normal.
if (hasNormals)
{
int lNormalIndex = lIndex;
if (lNormalElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lNormalIndex = lNormalElement->GetIndexArray().GetAt(lIndex);
}
lCurrentNormal = lNormalElement->GetDirectArray().GetAt(lNormalIndex);
normals[lIndex] = glm::vec3(static_cast<float>(lCurrentNormal[0]),
static_cast<float>(lCurrentNormal[1]),
static_cast<float>(lCurrentNormal[2]));
}
// Save the UV.
if (hasUvs)
{
int lUVIndex = lIndex;
if (lUVElement->GetReferenceMode() == FbxLayerElement::eIndexToDirect)
{
lUVIndex = lUVElement->GetIndexArray().GetAt(lIndex);
}
lCurrentUV = lUVElement->GetDirectArray().GetAt(lUVIndex);
uvs[lIndex] = glm::vec2(static_cast<float>(lCurrentUV[0]),
static_cast<float>(lCurrentUV[1]));
}
}
}
int lVertexCount = 0;
for (int lPolygonIndex = 0; lPolygonIndex < lPolygonCount; ++lPolygonIndex)
{
// The material for current face.
int lMaterialIndex = 0;
if (lMaterialIndice && lMaterialMappingMode == FbxGeometryElement::eByPolygon)
{
lMaterialIndex = lMaterialIndice->GetAt(lPolygonIndex);
}
// Where should I save the vertex attribute index, according to the material
const int lIndexOffset = subMeshMetaData[lMaterialIndex].indexOffset +
subMeshMetaData[lMaterialIndex].triangleCount * 3;
for (int lVerticeIndex = 0; lVerticeIndex < TRIANGLE_VERTEX_COUNT; ++lVerticeIndex)
{
const int lControlPointIndex = mesh->GetPolygonVertex(lPolygonIndex, lVerticeIndex);
if (allByControlPoint)
{
indices[lIndexOffset + lVerticeIndex] = static_cast<unsigned int>(lControlPointIndex);
}
// Populate the array with vertex attribute, if by polygon vertex.
else
{
indices[lIndexOffset + lVerticeIndex] = static_cast<unsigned int>(lVertexCount);
lCurrentVertex = lControlPoints[lControlPointIndex];
vertices[lVertexCount] = glm::vec3(static_cast<float>(lCurrentVertex[0]),
static_cast<float>(lCurrentVertex[1]),
static_cast<float>(lCurrentVertex[2]));
modelSpaceAABB.merge(vertices[lVertexCount]);
if (hasNormals)
{
mesh->GetPolygonVertexNormal(lPolygonIndex, lVerticeIndex, lCurrentNormal);
normals[lVertexCount] = glm::vec3(static_cast<float>(lCurrentNormal[0]),
static_cast<float>(lCurrentNormal[1]),
static_cast<float>(lCurrentNormal[2]));
}
if (hasUvs)
{
bool lUnmappedUV;
mesh->GetPolygonVertexUV(lPolygonIndex, lVerticeIndex, lUVName, lCurrentUV, lUnmappedUV);
uvs[lVertexCount] = glm::vec2(static_cast<float>(lCurrentUV[0]),
static_cast<float>(lCurrentUV[1]));
}
}
++lVertexCount;
}
subMeshMetaData[lMaterialIndex].triangleCount += 1;
}
}