// Deform the vertex array according to the links contained in the mesh and the skinning type.
void fbxLoader2::ComputeSkinDeformation(FbxAMatrix& pGlobalPosition, FbxMesh* pMesh, FbxTime& pTime, FbxPose* pPose, int frame)
{
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(0, FbxDeformer::eSkin);
FbxSkin::EType lSkinningType = lSkinDeformer->GetSkinningType();
if(lSkinningType == FbxSkin::eLinear || lSkinningType == FbxSkin::eRigid)
{
ComputeLinearDeformation(pGlobalPosition, pMesh, pTime, pPose, frame);
}
else if(lSkinningType == FbxSkin::eDualQuaternion)
{
int i = 0;
ComputeDualQuaternionDeformation(pGlobalPosition, pMesh, pTime, pPose, frame);
}
else if(lSkinningType == FbxSkin::eBlend)
{
int lVertexCount = pMesh->GetControlPointsCount();
FbxVector4* lVertexArrayLinear = new FbxVector4[lVertexCount];
memcpy(lVertexArrayLinear, pMesh->GetControlPoints(), lVertexCount * sizeof(FbxVector4));
FbxVector4* lVertexArrayDQ = new FbxVector4[lVertexCount];
memcpy(lVertexArrayDQ, pMesh->GetControlPoints(), lVertexCount * sizeof(FbxVector4));
ComputeLinearDeformation(pGlobalPosition, pMesh, pTime, pPose, frame);
ComputeDualQuaternionDeformation(pGlobalPosition, pMesh, pTime, pPose, frame);
}
}
void FBXSceneEncoder::loadSkin(FbxMesh* fbxMesh, Model* model)
{
const int deformerCount = fbxMesh->GetDeformerCount();
for (int i = 0; i < deformerCount; ++i)
{
FbxDeformer* deformer = fbxMesh->GetDeformer(i);
if (deformer->GetDeformerType() == FbxDeformer::eSkin)
{
FbxSkin* fbxSkin = FbxCast<FbxSkin>(deformer);
MeshSkin* skin = new MeshSkin();
vector<string> jointNames;
vector<Node*> joints;
vector<Matrix> bindPoses;
const int clusterCount = fbxSkin->GetClusterCount();
for (int j = 0; j < clusterCount; ++j)
{
FbxCluster* cluster = fbxSkin->GetCluster(j);
assert(cluster);
FbxNode* linkedNode = cluster->GetLink();
if (linkedNode && linkedNode->GetSkeleton())
{
const char* jointName = linkedNode->GetName();
assert(jointName);
jointNames.push_back(jointName);
Node* joint = loadNode(linkedNode);
assert(joint);
joints.push_back(joint);
FbxAMatrix matrix;
cluster->GetTransformLinkMatrix(matrix);
Matrix m;
copyMatrix(matrix.Inverse(), m);
bindPoses.push_back(m);
}
}
skin->setJointNames(jointNames);
skin->setJoints(joints);
skin->setBindPoses(bindPoses);
model->setSkin(skin);
break;
}
}
}
void fbxLoader2::setBindPoseCluster(FbxNode *node)
{
if( node->GetNodeAttribute())
{
switch(node->GetNodeAttribute()->GetAttributeType())
{
case FbxNodeAttribute::eMesh:
FbxMesh *mesh = node->GetMesh();
for (int j = 0; j<mesh->GetDeformerCount(); j++)
{
FbxSkin *skin = (FbxSkin*) mesh->GetDeformer(j,FbxDeformer::eSkin);
int clusters = skin->GetClusterCount();
for(int k = 0; k<clusters; k++)
{
FbxCluster* cluster = skin->GetCluster(k);
FbxNode* boneLink = cluster->GetLink();
if(boneLink)
{
std::string nameLink = boneLink->GetName();
FbxAMatrix translationM;
FbxAMatrix invert;
cluster->GetTransformLinkMatrix(translationM);
cluster->GetTransformMatrix(invert);
translationM = translationM * invert.Inverse();
D3DXMATRIX mat = D3DXMATRIX((float)translationM.mData[0].mData[0], (float)translationM.mData[0].mData[1], (float)translationM.mData[0].mData[2], (float)translationM.mData[3].mData[0],
(float)translationM.mData[1].mData[0], (float)translationM.mData[1].mData[1], (float)translationM.mData[1].mData[2], (float)translationM.mData[3].mData[1],
(float)translationM.mData[2].mData[0], (float)translationM.mData[2].mData[1], (float)translationM.mData[2].mData[2], (float)translationM.mData[3].mData[2],
0,0,0,1);
skeleton->GetBone(skeleton->GetBoneByName(nameLink))->SetTransformation(mat);
}
}
}
break;
}
}
for (int i = 0; i<node->GetChildCount(); i++)
{
FbxNode* child = node->GetChild(i);
setBindPoseCluster(child);
}
}
bool loadBlendWeights(FbxMesh* fbxMesh, vector<vector<Vector2> >& weights)
{
assert(fbxMesh);
const int vertexCount = fbxMesh->GetControlPointsCount();
FbxSkin* fbxSkin = NULL;
const int deformerCount = fbxMesh->GetDeformerCount();
for (int i = 0; i < deformerCount; ++i)
{
FbxDeformer* deformer = fbxMesh->GetDeformer(i);
if (deformer->GetDeformerType() == FbxDeformer::eSkin)
{
fbxSkin = FbxCast<FbxSkin>(deformer);
weights.resize(vertexCount);
const int clusterCount = fbxSkin->GetClusterCount();
for (int j = 0; j < clusterCount; ++j)
{
FbxCluster* cluster = fbxSkin->GetCluster(j);
assert(cluster);
const int vertexIndexCount = cluster->GetControlPointIndicesCount();
for (int k = 0; k < vertexIndexCount; ++k)
{
int index = cluster->GetControlPointIndices()[k];
if (index >= vertexCount)
{
continue;
}
double weight = cluster->GetControlPointWeights()[k];
if (weight == 0.0)
{
continue;
}
weights[index].push_back(Vector2((float)j, (float)weight));
}
}
// Only the first skin deformer will be loaded.
// There probably won't be more than one.
break;
}
}
return fbxSkin != NULL;
}
// Deform the vertex array according to the links contained in the mesh and the skinning type.
void compute_skin_deformation(FbxAMatrix& pGlobalPosition,
FbxMesh* pMesh,
FbxTime& pTime,
FbxVector4* pVertexArray,
FbxPose* pPose)
{
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(0, FbxDeformer::eSkin);
FbxSkin::EType lSkinningType = lSkinDeformer->GetSkinningType();
if(lSkinningType == FbxSkin::eLinear || lSkinningType == FbxSkin::eRigid) {
compute_linear_deformation(pGlobalPosition, pMesh, pTime, pVertexArray, pPose);
} else if(lSkinningType == FbxSkin::eDualQuaternion) {
compute_dual_quaternion_deformation(pGlobalPosition, pMesh, pTime, pVertexArray, pPose);
} else if(lSkinningType == FbxSkin::eBlend) {
int lVertexCount = pMesh->GetControlPointsCount();
FbxVector4* lVertexArrayLinear = new FbxVector4[lVertexCount];
memcpy(lVertexArrayLinear, pMesh->GetControlPoints(), lVertexCount * sizeof(FbxVector4));
FbxVector4* lVertexArrayDQ = new FbxVector4[lVertexCount];
memcpy(lVertexArrayDQ, pMesh->GetControlPoints(), lVertexCount * sizeof(FbxVector4));
compute_linear_deformation(pGlobalPosition, pMesh, pTime, lVertexArrayLinear, pPose);
compute_dual_quaternion_deformation(pGlobalPosition, pMesh, pTime, lVertexArrayDQ, pPose);
// To blend the skinning according to the blend weights
// Final vertex = DQSVertex * blend weight + LinearVertex * (1- blend weight)
// DQSVertex: vertex that is deformed by dual quaternion skinning method;
// LinearVertex: vertex that is deformed by classic linear skinning method;
int lBlendWeightsCount = lSkinDeformer->GetControlPointIndicesCount();
for(int lBWIndex = 0; lBWIndex<lBlendWeightsCount; ++lBWIndex) {
double lBlendWeight = lSkinDeformer->GetControlPointBlendWeights()[lBWIndex];
pVertexArray[lBWIndex] = lVertexArrayDQ[lBWIndex] * lBlendWeight + lVertexArrayLinear[lBWIndex] * (1 - lBlendWeight);
}
}
}
// Deform the vertex array in classic linear way.
void compute_linear_deformation(FbxAMatrix& pGlobalPosition,
FbxMesh* pMesh,
FbxTime& pTime,
FbxVector4* pVertexArray,
FbxPose* pPose)
{
// All the links must have the same link mode.
FbxCluster::ELinkMode lClusterMode = ((FbxSkin*)pMesh->GetDeformer(0, FbxDeformer::eSkin))->GetCluster(0)->GetLinkMode();
int lVertexCount = pMesh->GetControlPointsCount();
FbxAMatrix* lClusterDeformation = new FbxAMatrix[lVertexCount];
memset(lClusterDeformation, 0, lVertexCount * sizeof(FbxAMatrix));
double* lClusterWeight = new double[lVertexCount];
memset(lClusterWeight, 0, lVertexCount * sizeof(double));
if(lClusterMode == FbxCluster::eAdditive) {
for(int i = 0; i < lVertexCount; ++i) {
lClusterDeformation[i].SetIdentity();
}
}
// For all skins and all clusters, accumulate their deformation and weight
// on each vertices and store them in lClusterDeformation and lClusterWeight.
int lSkinCount = pMesh->GetDeformerCount(FbxDeformer::eSkin);
for(int lSkinIndex=0; lSkinIndex<lSkinCount; ++lSkinIndex) {
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(lSkinIndex, FbxDeformer::eSkin);
int lClusterCount = lSkinDeformer->GetClusterCount();
for(int lClusterIndex=0; lClusterIndex<lClusterCount; ++lClusterIndex) {
FbxCluster* lCluster = lSkinDeformer->GetCluster(lClusterIndex);
if(!lCluster->GetLink()) {
continue;
}
FbxAMatrix lVertexTransformMatrix;
compute_cluster_deformation(pGlobalPosition, pMesh, lCluster, lVertexTransformMatrix, pTime, pPose);
int lVertexIndexCount = lCluster->GetControlPointIndicesCount();
for(int k = 0; k < lVertexIndexCount; ++k) {
int lIndex = lCluster->GetControlPointIndices()[k];
// Sometimes, the mesh can have less points than at the time of the skinning
// because a smooth operator was active when skinning but has been deactivated during export.
if(lIndex >= lVertexCount) {
continue;
}
double lWeight = lCluster->GetControlPointWeights()[k];
if(lWeight == 0.0) {
continue;
}
// Compute the influence of the link on the vertex.
FbxAMatrix lInfluence = lVertexTransformMatrix;
matrix_scale(lInfluence, lWeight);
if(lClusterMode == FbxCluster::eAdditive) {
// Multiply with the product of the deformations on the vertex.
matrix_add_to_diagonal(lInfluence, 1.0 - lWeight);
lClusterDeformation[lIndex] = lInfluence * lClusterDeformation[lIndex];
// Set the link to 1.0 just to know this vertex is influenced by a link.
lClusterWeight[lIndex] = 1.0;
} else { // lLinkMode == FbxCluster::eNormalize || lLinkMode == FbxCluster::eTotalOne
// Add to the sum of the deformations on the vertex.
matrix_add(lClusterDeformation[lIndex], lInfluence);
// Add to the sum of weights to either normalize or complete the vertex.
lClusterWeight[lIndex] += lWeight;
}
}//For each vertex
}//lClusterCount
}
//Actually deform each vertices here by information stored in lClusterDeformation and lClusterWeight
for(int i = 0; i < lVertexCount; i++) {
FbxVector4 lSrcVertex = pVertexArray[i];
FbxVector4& lDstVertex = pVertexArray[i];
double lWeight = lClusterWeight[i];
// Deform the vertex if there was at least a link with an influence on the vertex,
if(lWeight != 0.0) {
lDstVertex = lClusterDeformation[i].MultT(lSrcVertex);
if(lClusterMode == FbxCluster::eNormalize) {
// In the normalized link mode, a vertex is always totally influenced by the links.
lDstVertex /= lWeight;
} else if(lClusterMode == FbxCluster::eTotalOne) {
// In the total 1 link mode, a vertex can be partially influenced by the links.
lSrcVertex *= (1.0 - lWeight);
lDstVertex += lSrcVertex;
}
}
}
delete [] lClusterDeformation;
delete [] lClusterWeight;
}
void MeshImporter::LoadWeight(FbxMesh* fbxMesh, MeshEntry* mesh)
{
int numSkin = fbxMesh->GetDeformerCount(FbxDeformer::eSkin);
if (numSkin == 0)
{
return;
}
assert(numSkin == 1);
// Assume only one deformer
FbxSkin* fbxSkin = static_cast<FbxSkin*>(fbxMesh->GetDeformer(0, FbxDeformer::eSkin));
int numCluster = fbxSkin->GetClusterCount();
int numControlPoints = fbxMesh->GetControlPointsCount();
vector<VertexWeight> tmpWeightList(numControlPoints);
for (int i = 0; i < numCluster; i++)
{
FbxCluster* fbxCluster = fbxSkin->GetCluster(i);
if (!fbxCluster->GetLink())
{
continue;
}
unsigned int boneIndex = model->skeleton->bones.size();
assert(fbxCluster->GetLinkMode() == FbxCluster::eNormalize);
// Read skeleton bones data (transformation matrix of each bone)
string boneName(fbxCluster->GetLink()->GetName());
if (!model->skeleton->FindBoneByName(boneName))
{
if (boneIndex >= MAXBONE)
{
PrintTab("Too many bones to load!!");
}
else
{
// Read weights of each vertex
int numIndexInCluster = fbxCluster->GetControlPointIndicesCount();
int* indicesInCluster = fbxCluster->GetControlPointIndices();
double* weights = fbxCluster->GetControlPointWeights();
for (int j = 0; j < numIndexInCluster; j++)
{
tmpWeightList[indicesInCluster[j]].AddBoneData(boneIndex, weights[j]);
}
// Normalize weights
/*for (int inVert = 0; inVert < tmpWeightList.size(); inVert++)
{
tmpWeightList[inVert].Normalize();
}*/
// Read animation bone matrix
FbxAMatrix fbxGlobalBoneBaseMatrix;// = fbxCluster->GetLink()->EvaluateGlobalTransform().Inverse().Transpose();
FbxAMatrix referenceGlobalInitPosition;
FbxAMatrix clusterGlobalInitPosition;
fbxCluster->GetTransformMatrix(referenceGlobalInitPosition);
fbxCluster->GetTransformLinkMatrix(clusterGlobalInitPosition);
fbxGlobalBoneBaseMatrix = clusterGlobalInitPosition.Inverse() * referenceGlobalInitPosition;
// To be considered when importing Maya fbx model
//FbxAMatrix geoMatrix = GetTransformMatrix(fbxCluster->GetLink());
Bone bone;
bone.name = boneName;
bone.boneIndex = boneIndex;
bone.fbxNode = fbxCluster->GetLink();
bone.globalBindposeInverseMatrix = fbxGlobalBoneBaseMatrix;
model->skeleton->bones.push_back(bone);
}
}
}
// Deployed in the index
for (unsigned int i = 0; i < mesh->numVertices; i++)
{
mesh->vertices[i].boneIndices.x = tmpWeightList[mesh->indices[i]].boneWeight[0].first;
mesh->vertices[i].boneIndices.y = tmpWeightList[mesh->indices[i]].boneWeight[1].first;
mesh->vertices[i].boneIndices.z = tmpWeightList[mesh->indices[i]].boneWeight[2].first;
mesh->vertices[i].boneIndices.w = tmpWeightList[mesh->indices[i]].boneWeight[3].first;
mesh->vertices[i].weights.x = tmpWeightList[mesh->indices[i]].boneWeight[0].second;
mesh->vertices[i].weights.y = tmpWeightList[mesh->indices[i]].boneWeight[1].second;
mesh->vertices[i].weights.z = tmpWeightList[mesh->indices[i]].boneWeight[2].second;
mesh->vertices[i].weights.w = tmpWeightList[mesh->indices[i]].boneWeight[3].second;
}
}
void FBXConverter::processAnimations( FbxNode* node , std::vector<JointData> &skeleton , std::vector<VertexData> &verts , std::vector<IndexData> &indices )
{
FbxMesh* theMesh = node->GetMesh();
FbxAnimStack* animationStack = node->GetScene()->GetSrcObject<FbxAnimStack>();
FbxAnimLayer* animationLayer = animationStack->GetMember<FbxAnimLayer>();
std::vector<FbxTime> frames;
for ( int curveNodeIndex = 0; curveNodeIndex < animationLayer->GetMemberCount(); ++curveNodeIndex )
{
FbxAnimCurveNode* currentCurve = animationLayer->GetMember<FbxAnimCurveNode>( curveNodeIndex );
for ( unsigned int channelIndex = 0; channelIndex < currentCurve->GetChannelsCount(); ++channelIndex )
{
for ( int curve = 0; curve < currentCurve->GetCurveCount( channelIndex ); ++curve )
{
FbxAnimCurve* theCurveVictim = currentCurve->GetCurve( channelIndex , curve );
for ( int keyIndex = 0; keyIndex < theCurveVictim->KeyGetCount(); ++keyIndex )
{
bool alreadyIn = false;
for ( unsigned int frameIndex = 0; frameIndex < frames.size(); ++frameIndex )
{
if ( ( unsigned int ) frames[frameIndex].GetFrameCount() == ( unsigned int ) theCurveVictim->KeyGet( keyIndex ).GetTime().GetFrameCount() )
{
alreadyIn = true;
//std::cout << frames[frameIndex].GetFrameCount() << " " << theCurveVictim->KeyGet( keyIndex ).GetTime().GetFrameCount() << " " << alreadyIn << std::endl;
break;
}
}
std::cout << theCurveVictim->KeyGet( keyIndex ).GetTime().GetFrameCount() << " " << alreadyIn << std::endl;
if(!alreadyIn) frames.push_back(theCurveVictim->KeyGet( keyIndex ).GetTime());
}
}
}
}
std::sort( frames.begin() , frames.end() , frameCompare );
FbxAMatrix geoTransform( node->GetGeometricTranslation( FbxNode::eSourcePivot ) , node->GetGeometricRotation( FbxNode::eSourcePivot ) , node->GetGeometricScaling( FbxNode::eSourcePivot ) );
for ( int i = 0; i < theMesh->GetDeformerCount(); ++i )
{
FbxSkin* theSkin = reinterpret_cast< FbxSkin* >( theMesh->GetDeformer( i , FbxDeformer::eSkin ) );
if ( !theSkin ) continue;
for ( int j = 0; j < theSkin->GetClusterCount(); ++j )
{
FbxCluster* cluster = theSkin->GetCluster( j );
std::string jointName = cluster->GetLink()->GetName();
int currentJointIndex = -1;
for ( unsigned int k = 0; k < skeleton.size(); ++k )
{
if ( !skeleton[k].name.compare( jointName ) )
{
currentJointIndex = k;
break;
}
}
if ( currentJointIndex < 0 )
{
std::cout << "wrong bone" << std::endl;
continue;
}
FbxAMatrix transformMatrix, transformLinkMatrix, offsetMatrix;
cluster->GetTransformMatrix( transformMatrix );
cluster->GetTransformLinkMatrix( transformLinkMatrix );
//offsetMatrix = transformLinkMatrix.Inverse() * transformMatrix * geoTransform;
FbxMatrix realMatrix( transformLinkMatrix.Inverse() * transformMatrix );
for ( unsigned int row = 0; row < 4; ++row )
{
for ( unsigned int column = 0; column < 4; ++column )
{
skeleton[currentJointIndex].offsetMatrix[row][column] = (float)realMatrix.Get( row , column );
}
}
for ( int k = 0; k < cluster->GetControlPointIndicesCount(); ++k )
{
BlendingIndexWeightPair weightPair;
weightPair.blendingIndex = currentJointIndex;
weightPair.blendingWeight = (float)cluster->GetControlPointWeights()[k];
unsigned int controlPoint = cluster->GetControlPointIndices()[k];
for ( unsigned int z = 0; z < indices.size(); ++z )
{
if ( indices[z].oldControlPoint == controlPoint )
{
if ( verts[indices[z].index].blendingInfo.size() > 4 )
{
std::cout << "Warning: vert has more than 4 bones connected, ignoring additional bone." << std::endl;
}
//else verts[indices[z].index].blendingInfo.push_back( weightPair );
bool found = false;
for ( unsigned int omg = 0; omg < verts[indices[z].index].blendingInfo.size(); ++omg )
{
if ( verts[indices[z].index].blendingInfo[omg].blendingIndex == weightPair.blendingIndex )
{
found = true;
break;
}
}
if ( !found ) verts[indices[z].index].blendingInfo.push_back( weightPair );
}
}
}
for ( unsigned int frameIndex = 0; frameIndex < frames.size(); ++frameIndex )
{
FbxVector4 translation = cluster->GetLink()->EvaluateLocalTranslation( frames[frameIndex] );
FbxVector4 rotation = cluster->GetLink()->EvaluateLocalRotation( frames[frameIndex] );
FbxVector4 scale = cluster->GetLink()->EvaluateLocalScaling( frames[frameIndex] );
AnimationData animData;
animData.frame = (int)frames[frameIndex].GetFrameCount();
animData.translation = glm::vec3(translation[0],translation[1],translation[2]);
animData.rotation = glm::angleAxis( glm::radians( (float)rotation[2] ), glm::vec3(0,0,1)) * glm::angleAxis(glm::radians((float) rotation[1]), glm::vec3(0,1,0)) * glm::angleAxis(glm::radians((float)rotation[0]), glm::vec3(1,0,0));
animData.scale = glm::vec3(scale[0],scale[1],scale[2]);
skeleton[currentJointIndex].animation.push_back( animData );
}
}
}
}
/**
* Adds Fbx Clusters necessary to skin a skeletal mesh to the bones in the BoneNodes list
*/
void FFbxExporter::BindMeshToSkeleton(const USkeletalMesh* SkelMesh, FbxNode* MeshRootNode, TArray<FbxNode*>& BoneNodes)
{
const FSkeletalMeshResource* SkelMeshResource = SkelMesh->GetImportedResource();
const FStaticLODModel& SourceModel = SkelMeshResource->LODModels[0];
const int32 VertexCount = SourceModel.NumVertices;
FbxAMatrix MeshMatrix;
FbxScene* lScene = MeshRootNode->GetScene();
if( lScene )
{
MeshMatrix = MeshRootNode->EvaluateGlobalTransform();
}
FbxGeometry* MeshAttribute = (FbxGeometry*) MeshRootNode->GetNodeAttribute();
FbxSkin* Skin = FbxSkin::Create(Scene, "");
const int32 BoneCount = BoneNodes.Num();
for(int32 BoneIndex = 0; BoneIndex < BoneCount; ++BoneIndex)
{
FbxNode* BoneNode = BoneNodes[BoneIndex];
// Create the deforming cluster
FbxCluster *CurrentCluster = FbxCluster::Create(Scene,"");
CurrentCluster->SetLink(BoneNode);
CurrentCluster->SetLinkMode(FbxCluster::eTotalOne);
// Add all the vertices that are weighted to the current skeletal bone to the cluster
// NOTE: the bone influence indices contained in the vertex data are based on a per-chunk
// list of verts. The convert the chunk bone index to the mesh bone index, the chunk's
// boneMap is needed
int32 VertIndex = 0;
const int32 SectionCount = SourceModel.Sections.Num();
for(int32 SectionIndex = 0; SectionIndex < SectionCount; ++SectionIndex)
{
const FSkelMeshSection& Section = SourceModel.Sections[SectionIndex];
for(int32 SoftIndex = 0; SoftIndex < Section.SoftVertices.Num(); ++SoftIndex)
{
const FSoftSkinVertex& Vert = Section.SoftVertices[SoftIndex];
for(int32 InfluenceIndex = 0; InfluenceIndex < MAX_TOTAL_INFLUENCES; ++InfluenceIndex)
{
int32 InfluenceBone = Section.BoneMap[ Vert.InfluenceBones[InfluenceIndex] ];
float InfluenceWeight = Vert.InfluenceWeights[InfluenceIndex] / 255.f;
if(InfluenceBone == BoneIndex && InfluenceWeight > 0.f)
{
CurrentCluster->AddControlPointIndex(VertIndex, InfluenceWeight);
}
}
++VertIndex;
}
}
// Now we have the Patch and the skeleton correctly positioned,
// set the Transform and TransformLink matrix accordingly.
CurrentCluster->SetTransformMatrix(MeshMatrix);
FbxAMatrix LinkMatrix;
if( lScene )
{
LinkMatrix = BoneNode->EvaluateGlobalTransform();
}
CurrentCluster->SetTransformLinkMatrix(LinkMatrix);
// Add the clusters to the mesh by creating a skin and adding those clusters to that skin.
Skin->AddCluster(CurrentCluster);
}
// Add the skin to the mesh after the clusters have been added
MeshAttribute->AddDeformer(Skin);
}
int main(int argc, char **argv)
{
#ifndef _DEBUG
if (argc != 2)
{
printf("invalid arg");
return 0;
}
const char* filename = argv[1];
#else
const char* filename = "*****@*****.**";
#endif
output.open("output.txt", ios::out | ios::trunc);
output2.open("output2.txt", ios::out | ios::trunc);
output3.open("output3.txt", ios::out | ios::trunc);
if (!output.is_open())
{
exit(1);
}
FbxManager* fm = FbxManager::Create();
FbxIOSettings *ios = FbxIOSettings::Create(fm, IOSROOT);
//ios->SetBoolProp(EXP_FBX_ANIMATION, false);
ios->SetIntProp(EXP_FBX_COMPRESS_LEVEL, 9);
ios->SetAllObjectFlags(true);
fm->SetIOSettings(ios);
FbxImporter* importer = FbxImporter::Create(fm, "");
if (!importer->Initialize(filename, -1, fm->GetIOSettings()))
{
printf("error returned : %s\n", importer->GetStatus().GetErrorString());
exit(-1);
}
FbxScene* scene = FbxScene::Create(fm, "myscene");
importer->Import(scene);
importer->Destroy();
output << "some\n";
output << "charcnt : " << scene->GetCharacterCount() << endl << "node cnt : " << scene->GetNodeCount() << endl;
int animstackcnt = scene->GetSrcObjectCount<FbxAnimStack>();
output << "animstackcnt : " << animstackcnt << endl;
output << "------------" << endl;
vector<FbxNode*> removableNodes;
for (int i = 0; i < scene->GetNodeCount(); i++)
{
FbxNode* node = scene->GetNode(i);
output << "scene's node " << i << " : " << node->GetName() << ", childcnt : " << node->GetChildCount();
if (node->GetNodeAttribute())
{
output <<", att type : " << node->GetNodeAttribute()->GetAttributeType();
if (node->GetNodeAttribute()->GetAttributeType() == FbxNodeAttribute::EType::eMesh)
{
FbxMesh* mesh = node->GetMesh();
output << ", mem usage : " << mesh->MemoryUsage() << ", deformer cnt : " << mesh->GetDeformerCount(FbxDeformer::EDeformerType::eSkin) << endl;
collapseMesh(mesh);
FbxSkin* skin = (FbxSkin*) (mesh->GetDeformer(0, FbxDeformer::EDeformerType::eSkin));
if (skin)
{
for (int cli = 0; cli < skin->GetClusterCount(); cli++)
{
FbxCluster* cluster = skin->GetCluster(cli);
output << "\tcluster no." << cli << " has " << cluster->GetControlPointIndicesCount() << " connected verts" << endl;
if (cluster->GetControlPointIndicesCount() == 0)
removableNodes.push_back( cluster->GetLink() );
//cluster->
//skin->RemoveCluster(cluster);효과없음
}
}
if (mesh->IsTriangleMesh())
{
output << "\tit's triangle mesh" << endl;
}
//mesh->RemoveDeformer(0);효과없음
}
else
output << endl;
}
else
{
output << ", att type : none" << endl;
}
}
for (int rni = 0; rni < removableNodes.size(); rni++)
{
FbxNode* rnd = removableNodes[rni];
if (rnd && rnd->GetNodeAttribute()->GetAttributeType() == FbxNodeAttribute::EType::eSkeleton)
{
output3 << rnd->GetName() << " node with no vert attached's curve : " << rnd->GetSrcObjectCount<FbxAnimCurve>() << "," << rnd->GetSrcObjectCount<FbxAnimCurveNode>() << endl;
}
}
output << "-----------animinfo" << endl;
int cubic = 0, linear = 0, cons = 0;
for (int si = 0; si < animstackcnt; si++)
{
FbxAnimStack* stack = scene->GetSrcObject<FbxAnimStack>(si);
for (int i = 0; i < stack->GetMemberCount<FbxAnimLayer>(); i++)
{
FbxAnimLayer* layer = stack->GetMember<FbxAnimLayer>(i);
int curvenodecnt = layer->GetMemberCount<FbxAnimCurveNode>();
int compositcnt = 0;
for (int j = 0; j < curvenodecnt; j++)
{
FbxAnimCurveNode* cnode = layer->GetMember<FbxAnimCurveNode>(j);
compositcnt += (cnode->IsComposite() ? 1 : 0);
}
output << "\tanimstack's layer " << i << " : " << layer->GetName() << ", curve node cnt : " << curvenodecnt << ", composit node cnt : " << compositcnt << endl;
vector<FbxAnimCurveNode*> nodes2del;
for (int j = 0; j < curvenodecnt; j++)
{
FbxAnimCurveNode* cnode = layer->GetMember<FbxAnimCurveNode>(j);
output << "\t\tcurvenode " << j << " channel cnt : " << cnode->GetChannelsCount() << ", dst obj cnt " << cnode->GetDstObjectCount() << "(";
for (int dsti = 0; dsti < cnode->GetDstObjectCount(); dsti++)
{
output << "," << cnode->GetDstObject(dsti)->GetName();
if (cnode->GetDstObject(dsti)->GetSrcObjectCount() > 0)
output << "<" << cnode->GetDstObject(dsti)->GetSrcObjectCount<FbxSkeleton>() << ">";
}
output << ")";
FbxTimeSpan interval;
if (cnode->GetAnimationInterval(interval))
{
output << ", start : " << interval.GetStart().GetTimeString() << ", end : " << interval.GetStop().GetTimeString() << endl;
}
else
{
nodes2del.push_back(cnode);
output << ", no interval" << endl;
}
for (int chi = 0; chi < cnode->GetChannelsCount(); chi++)
{
int curvecnt = cnode->GetCurveCount(chi);
output << "\t\t\tchannel." << chi << " curvecnt : " << curvecnt << endl;
for (int ci = 0; ci < curvecnt; ci++)
{
FbxAnimCurve* curve = cnode->GetCurve(chi, ci);
int keycnt = curve->KeyGetCount();
output << "\t\t\t\tcurve no." << ci << " : key count : " << keycnt;
output2 << "curve " << ci << endl;
vector<int> keys2Remove;
for (int cki = 0; cki < keycnt; cki++)
{
FbxAnimCurveKey prevkey, currkey, nextkey;
if (cki == 0 || cki == keycnt - 1)
continue;
currkey = curve->KeyGet(cki);
prevkey = curve->KeyGet(cki-1);
nextkey = curve->KeyGet(cki + 1);
bool keepit = true;
output2 << ci << "-" << cki;
// keepit = keepTestHorizon(curve, prevkey, currkey, nextkey);
// if (keepit)
// keepit = slopkeepTest(curve, prevkey, currkey, nextkey);
if (!keepit)
{
if (!(currkey.GetInterpolation() == FbxAnimCurveDef::EInterpolationType::eInterpolationConstant && nextkey.GetInterpolation() != FbxAnimCurveDef::EInterpolationType::eInterpolationConstant))
keys2Remove.push_back(cki);
}
}
for (int kri = keys2Remove.size() - 1; kri >= 0; kri--)
{
//curve->KeyRemove(keys2Remove[kri]);
}
output2 << endl;
//output << ", cubic:linear:const : " << cubic << ":" << linear << ":" << cons << endl;
if (keys2Remove.size() > 0)
output << ", " << keys2Remove.size() << " keys removed";
keycnt = curve->KeyGetCount();
}
}
}
//이부분은 별로 효과없음
/*
for (int di = 0; di < nodes2del.size(); di++)
{
layer->RemoveMember(nodes2del[di]);
}
*/
}
}
output << "cubic:linear:const " << cubic << ":" << linear << ":" << cons << endl;
FbxExporter* exporter = FbxExporter::Create(fm, "");
const char* outFBXName = "after.fbx";
bool exportstatus = exporter->Initialize(outFBXName, -1, fm->GetIOSettings());
if (exportstatus == false)
{
puts("err export fail");
}
exporter->Export(scene);
exporter->Destroy();
scene->Destroy();
ios->Destroy();
fm->Destroy();
output.close();
output2.close();
output3.close();
return 0;
}
// Deform the vertex array in classic linear way.
void fbxLoader2::ComputeLinearDeformation(FbxAMatrix& pGlobalPosition, FbxMesh* pMesh, FbxTime& pTime, FbxPose* pPose, int frame)
{
// All the links must have the same link mode.
FbxCluster::ELinkMode lClusterMode = ((FbxSkin*)pMesh->GetDeformer(0, FbxDeformer::eSkin))->GetCluster(0)->GetLinkMode();
int lVertexCount = pMesh->GetControlPointsCount();
FbxAMatrix* lClusterDeformation = new FbxAMatrix[lVertexCount];
memset(lClusterDeformation, 0, lVertexCount * sizeof(FbxAMatrix));
double* lClusterWeight = new double[lVertexCount];
memset(lClusterWeight, 0, lVertexCount * sizeof(double));
if (lClusterMode == FbxCluster::eAdditive)
{
for (int i = 0; i < lVertexCount; ++i)
{
lClusterDeformation[i].SetIdentity();
}
}
// For all skins and all clusters, accumulate their deformation and weight
// on each vertices and store them in lClusterDeformation and lClusterWeight.
int lSkinCount = pMesh->GetDeformerCount(FbxDeformer::eSkin);
for ( int lSkinIndex=0; lSkinIndex<lSkinCount; ++lSkinIndex)
{
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(lSkinIndex, FbxDeformer::eSkin);
int lClusterCount = lSkinDeformer->GetClusterCount();
for ( int lClusterIndex=0; lClusterIndex<lClusterCount; ++lClusterIndex)
{
FbxCluster* lCluster = lSkinDeformer->GetCluster(lClusterIndex);
if (!lCluster->GetLink())
continue;
FbxAMatrix lVertexTransformMatrix;
ComputeClusterDeformation(pGlobalPosition, pMesh, lCluster, lVertexTransformMatrix, pTime, pPose, frame);
//lVertexTransformMatrix.Transpose();
FbxAMatrix identityM;
identityM.SetIdentity();
FbxVector4 rotation = lVertexTransformMatrix.GetROnly();
FbxVector4 translation = lVertexTransformMatrix.GetT();
FbxVector4 scaling = lVertexTransformMatrix.GetS();
//rotation = FbxVector4(rotation.mData[0], rotation.mData[1], rotation.mData[2], rotation.mData[3]);
//translation = FbxVector4 (translation.mData[0], translation.mData[1], translation.mData[2], translation.mData[3]);
//scaling = FbxVector4 (scaling.mData[0], scaling.mData[1], scaling.mData[2], scaling.mData[3]);
//lVertexTransformMatrix = FbxAMatrix(translation, rotation, scaling);
//lVertexTransformMatrix = FbxAMatrix(translation, rotation, scaling);
identityM = lVertexTransformMatrix * identityM;
D3DXMATRIX convert = D3DXMATRIX(1,0,0,0,
0,0,1,0,
0,1,0,0,
0,0,0,1);
D3DXMATRIX setMatrix = D3DXMATRIX( (float)identityM.mData[0].mData[0], (float)identityM.mData[1].mData[0], (float)identityM.mData[2].mData[0], (float)identityM.mData[3].mData[0],
(float)identityM.mData[0].mData[1], (float)identityM.mData[1].mData[1], (float)identityM.mData[2].mData[1], (float)identityM.mData[3].mData[1],
(float)identityM.mData[0].mData[2], (float)identityM.mData[1].mData[2], (float)identityM.mData[2].mData[2], (float)identityM.mData[3].mData[2],
(float)identityM.mData[0].mData[3], (float)identityM.mData[1].mData[3], (float)identityM.mData[2].mData[3],1);
//setMatrix *=0.5f;
setMatrix = D3DXMATRIX( (float)identityM.mData[0].mData[0], (float)identityM.mData[1].mData[0], (float)identityM.mData[2].mData[0], (float)identityM.mData[3].mData[0],
(float)identityM.mData[0].mData[1], (float)identityM.mData[1].mData[1], (float)identityM.mData[2].mData[1], (float)identityM.mData[3].mData[1],
//(float)identityM.mData[0].mData[2], (float)identityM.mData[1].mData[2], (float)identityM.mData[2].mData[2], (float)identityM.mData[3].mData[1],
(float)identityM.mData[0].mData[2], (float)identityM.mData[1].mData[2], (float)identityM.mData[2].mData[2], (float)identityM.mData[3].mData[2],
(float)identityM.mData[0].mData[3], (float)identityM.mData[1].mData[3], (float)identityM.mData[2].mData[3], 1);
//setMatrix = setMatrix*convert;
///////// juz prawie dziala. sprawdz jeszcze te addytywne itp.
/// generalnie dodaj to do włosów i dorzuć poprzednią macierz, żeby liczyć przesunięcia.
//setMatrix /= 2.54f; //skala jedna jest w cm, druga w inchach, nieważne czy zmieniam system skali ręcznie... bzdurka fbxa
std::string nametype = lCluster->GetLink()->GetName();
animationStructure->GetSkeleton(frame)->GetBone(animationStructure->GetSkeleton(frame)->GetBoneByName(lCluster->GetLink()->GetName()))->SetTransformation(setMatrix);
}//lClusterCount
}
delete [] lClusterDeformation;
delete [] lClusterWeight;
}
// Deform the vertex array in classic linear way.
void ComputeLinearDeformation(FbxAMatrix& pGlobalPosition,
FbxMesh* pMesh,
FbxVector4* someWeights,
FbxVectorTemplate4<int>* someBones,
AnimationData* aAnimation)
{
aAnimation;
pGlobalPosition;
// All the links must have the same link mode.
FbxCluster::ELinkMode lClusterMode = ((FbxSkin*)pMesh->GetDeformer(0, FbxDeformer::eSkin))->GetCluster(0)->GetLinkMode();
lClusterMode;
int lVertexCount = pMesh->GetControlPointsCount();
for(int i = 0;i < lVertexCount;++i)
{
someBones[i][0] = -1;
someBones[i][1] = -1;
someBones[i][2] = -1;
someBones[i][3] = -1;
someWeights[i][0] = 0.0;
someWeights[i][1] = 0.0;
someWeights[i][2] = 0.0;
someWeights[i][3] = 0.0;
}
// For all skins and all clusters, accumulate their deformation and weight
// on each vertices and store them in lClusterDeformation and lClusterWeight.
int lSkinCount = pMesh->GetDeformerCount(FbxDeformer::eSkin);
for ( int lSkinIndex=0; lSkinIndex<lSkinCount; ++lSkinIndex)
{
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(lSkinIndex, FbxDeformer::eSkin);
int lClusterCount = lSkinDeformer->GetClusterCount();
for ( int lClusterIndex=0; lClusterIndex<lClusterCount; ++lClusterIndex)
{
FbxCluster* lCluster = lSkinDeformer->GetCluster(lClusterIndex);
if (!lCluster->GetLink())
continue;
std::string boneName = lCluster->GetLink()->GetName();
int boneId = (int)lCluster->GetLink()->GetUserDataPtr();
FbxAMatrix lVertexTransformMatrix;
int lVertexIndexCount = lCluster->GetControlPointIndicesCount();
for (int k = 0; k < lVertexIndexCount; ++k)
{
int lIndex = lCluster->GetControlPointIndices()[k];
// Sometimes, the mesh can have less points than at the time of the skinning
// because a smooth operator was active when skinning but has been deactivated during export.
if (lIndex >= lVertexCount)
continue;
double lWeight = lCluster->GetControlPointWeights()[k];
if (lWeight == 0.0)
{
continue;
}
bool foundSpot = false;
for(int spot = 0;spot < 4;++spot)
{
if(someBones[lIndex][spot] == -1)
{
someBones[lIndex][spot] = boneId;
someWeights[lIndex][spot] = lWeight;
foundSpot = true;
break;
}
}
/*if (lClusterMode == FbxCluster::eAdditive)
{
// Set the link to 1.0 just to know this vertex is influenced by a link.
lClusterWeight[lIndex] = 1.0;
}
else // lLinkMode == FbxCluster::eNormalize || lLinkMode == FbxCluster::eTotalOne
{
// Add to the sum of weights to either normalize or complete the vertex.
lClusterWeight[lIndex] += lWeight;
}*/
}//For each vertex
}//lClusterCount
}
/*for(int i = 0;i < lVertexCount;++i)
{
if(someBones[i][0] == -1)
{
someBones[i][0] = 0;
}
if(someBones[i][1] == -1)
{
someBones[i][1] = 0;
}
if(someBones[i][2] == -1)
{
someBones[i][2] = 0;
}
if(someBones[i][3] == -1)
{
someBones[i][3] = 0;
}
}*/
//Actually deform each vertices here by information stored in lClusterDeformation and lClusterWeight
/*for (int i = 0; i < lVertexCount; i++)
{
FbxVector4 lSrcVertex = pVertexArray[i];
FbxVector4& lDstVertex = pVertexArray[i];
double lWeight = lClusterWeight[i];
// Deform the vertex if there was at least a link with an influence on the vertex,
if (lWeight != 0.0)
{
lDstVertex = lClusterDeformation[i].MultT(lSrcVertex);
if (lClusterMode == FbxCluster::eNormalize)
{
// In the normalized link mode, a vertex is always totally influenced by the links.
lDstVertex /= lWeight;
}
else if (lClusterMode == FbxCluster::eTotalOne)
{
// In the total 1 link mode, a vertex can be partially influenced by the links.
lSrcVertex *= (1.0 - lWeight);
lDstVertex += lSrcVertex;
}
}
}
delete [] lClusterDeformation;
delete [] lClusterWeight;*/
}
void ExportFbxMesh(const Value& obj)
{
string name = obj["Name"].GetString();
FbxNode* pNode = FbxNode::Create(pManager, name.c_str());
FbxMesh* pMesh = FbxMesh::Create(pManager, name.c_str());
pNode->AddNodeAttribute(pMesh);
pScene->GetRootNode()->AddChild(pNode);
int numVertex = obj["NumVertex"].GetInt();
{
pMesh->InitControlPoints(numVertex);
FbxVector4* lControlPoints = pMesh->GetControlPoints();
const Value& pos = obj["Position"];
for (int i = 0; i < numVertex; i++)
{
double x = pos[i * 3 + 0].GetDouble();
x = -x;
double y = pos[i * 3 + 1].GetDouble();
double z = pos[i * 3 + 2].GetDouble();
lControlPoints[i] = FbxVector4(x, y, z);
}
}
{
FbxGeometryElementNormal* lGeometryElementNormal = pMesh->CreateElementNormal();
lGeometryElementNormal->SetMappingMode(FbxGeometryElement::eByControlPoint);
lGeometryElementNormal->SetReferenceMode(FbxGeometryElement::eDirect);
FbxLayerElementArrayTemplate<FbxVector4>& array = lGeometryElementNormal->GetDirectArray();
const Value& normal = obj["Normal"];
for (int i = 0; i < numVertex; i++)
{
double x = normal[i * 3 + 0].GetDouble();
x = -x;
double y = normal[i * 3 + 1].GetDouble();
double z = normal[i * 3 + 2].GetDouble();
array.Add(FbxVector4(x, y, z));
}
}
{
FbxGeometryElementUV* lUVDiffuseElement = pMesh->CreateElementUV("DiffuseUV");
FBX_ASSERT(lUVDiffuseElement != NULL);
lUVDiffuseElement->SetMappingMode(FbxGeometryElement::eByControlPoint);
lUVDiffuseElement->SetReferenceMode(FbxGeometryElement::eDirect);
FbxLayerElementArrayTemplate<FbxVector2>& array = lUVDiffuseElement->GetDirectArray();
const Value& v = obj["UV0"];
for (int i = 0; i < numVertex; i++)
{
double x = v[i * 2 + 0].GetDouble();
double y = v[i * 2 + 1].GetDouble();
array.Add(FbxVector2(x, y));
}
}
{
const Value& color = obj["Color"];
if (!color.IsNull())
{
FbxGeometryElementVertexColor* pColorElement = pMesh->CreateElementVertexColor();
FBX_ASSERT(pColorElement != NULL);
pColorElement->SetMappingMode(FbxGeometryElement::eByControlPoint);
pColorElement->SetReferenceMode(FbxGeometryElement::eDirect);
FbxLayerElementArrayTemplate<FbxColor>& array = pColorElement->GetDirectArray();
for (int i = 0; i < numVertex; i++)
{
double r = color[i * 4 + 0].GetDouble();
double g = color[i * 4 + 1].GetDouble();
double b = color[i * 4 + 2].GetDouble();
double a = color[i * 4 + 3].GetDouble();
array.Add(FbxColor(r, g, b, a));
}
}
}
{
const Value& Indeices = obj["Indeices"];
for (uint32_t subMesh = 0; subMesh < Indeices.Size(); subMesh++)
{
const Value& index0 = Indeices[subMesh];
int numIndex = index0.Size();
printf("index %d\n", numIndex);
for (int i = 0; i < numIndex / 3; i++)
{
pMesh->BeginPolygon(-1, -1, subMesh);
int index[3] = {
index0[i * 3 + 0].GetInt(),
index0[i * 3 + 1].GetInt(),
index0[i * 3 + 2].GetInt(),
};
pMesh->AddPolygon(index[0]);
pMesh->AddPolygon(index[2]);
pMesh->AddPolygon(index[1]);
pMesh->EndPolygon();
}
}
}
//////////////////////////////////////////////////////////////////////////
// export skin
const Value& boneIndex = obj["BoneIndex"];
if (!boneIndex.IsNull())
{
if (fbxBones.empty())
{
printf("no bones, can not export skin");
return;
}
const Value& boneWeight = obj["BoneWeight"];
vector<FbxCluster*> clusters(fbxBones.size(), NULL);
for (uint32_t i = 0; i < fbxBones.size(); i++) {
FbxCluster* pCluster = FbxCluster::Create(pScene, "");
pCluster->SetLink(fbxBones[i]);
pCluster->SetLinkMode(FbxCluster::eTotalOne);
clusters[i] = pCluster;
}
for (int i = 0; i < numVertex; i++) {
for (int j = 0; j < 4; j++) {
int bone = boneIndex[i * 4 + j].GetInt();
double weight = boneWeight[i * 4 + j].GetDouble();
clusters[bone]->AddControlPointIndex(i, weight);
}
}
FbxSkin* lSkin = FbxSkin::Create(pScene, "");
FbxScene* p = pNode->GetScene();
FbxAMatrix modelMatrix = pNode->EvaluateGlobalTransform();
for (uint32_t i = 0; i < clusters.size(); i++) {
clusters[i]->SetTransformMatrix(modelMatrix);
FbxAMatrix boneMatrix = fbxBones[i]->EvaluateGlobalTransform();
clusters[i]->SetTransformLinkMatrix(boneMatrix);
lSkin->AddCluster(clusters[i]);
}
pMesh->AddDeformer(lSkin);
}
}
// Deform the vertex array in Dual Quaternion Skinning way.
void compute_dual_quaternion_deformation(FbxAMatrix& pGlobalPosition,
FbxMesh* pMesh,
FbxTime& pTime,
FbxVector4* pVertexArray,
FbxPose* pPose)
{
// All the links must have the same link mode.
FbxCluster::ELinkMode lClusterMode = ((FbxSkin*)pMesh->GetDeformer(0, FbxDeformer::eSkin))->GetCluster(0)->GetLinkMode();
int lVertexCount = pMesh->GetControlPointsCount();
int lSkinCount = pMesh->GetDeformerCount(FbxDeformer::eSkin);
FbxDualQuaternion* lDQClusterDeformation = new FbxDualQuaternion[lVertexCount];
memset(lDQClusterDeformation, 0, lVertexCount * sizeof(FbxDualQuaternion));
double* lClusterWeight = new double[lVertexCount];
memset(lClusterWeight, 0, lVertexCount * sizeof(double));
// For all skins and all clusters, accumulate their deformation and weight
// on each vertices and store them in lClusterDeformation and lClusterWeight.
for(int lSkinIndex=0; lSkinIndex<lSkinCount; ++lSkinIndex) {
FbxSkin * lSkinDeformer = (FbxSkin *)pMesh->GetDeformer(lSkinIndex, FbxDeformer::eSkin);
int lClusterCount = lSkinDeformer->GetClusterCount();
for(int lClusterIndex=0; lClusterIndex<lClusterCount; ++lClusterIndex) {
FbxCluster* lCluster = lSkinDeformer->GetCluster(lClusterIndex);
if(!lCluster->GetLink()) {
continue;
}
FbxAMatrix lVertexTransformMatrix;
compute_cluster_deformation(pGlobalPosition, pMesh, lCluster, lVertexTransformMatrix, pTime, pPose);
FbxQuaternion lQ = lVertexTransformMatrix.GetQ();
FbxVector4 lT = lVertexTransformMatrix.GetT();
FbxDualQuaternion lDualQuaternion(lQ, lT);
int lVertexIndexCount = lCluster->GetControlPointIndicesCount();
for(int k = 0; k < lVertexIndexCount; ++k) {
int lIndex = lCluster->GetControlPointIndices()[k];
// Sometimes, the mesh can have less points than at the time of the skinning
// because a smooth operator was active when skinning but has been deactivated during export.
if(lIndex >= lVertexCount) {
continue;
}
double lWeight = lCluster->GetControlPointWeights()[k];
if(lWeight == 0.0) {
continue;
}
// Compute the influence of the link on the vertex.
FbxDualQuaternion lInfluence = lDualQuaternion * lWeight;
if(lClusterMode == FbxCluster::eAdditive) {
// Simply influenced by the dual quaternion.
lDQClusterDeformation[lIndex] = lInfluence;
// Set the link to 1.0 just to know this vertex is influenced by a link.
lClusterWeight[lIndex] = 1.0;
} else { // lLinkMode == FbxCluster::eNormalize || lLinkMode == FbxCluster::eTotalOne
if(lClusterIndex == 0) {
lDQClusterDeformation[lIndex] = lInfluence;
} else {
// Add to the sum of the deformations on the vertex.
// Make sure the deformation is accumulated in the same rotation direction.
// Use dot product to judge the sign.
double lSign = lDQClusterDeformation[lIndex].GetFirstQuaternion().DotProduct(lDualQuaternion.GetFirstQuaternion());
if(lSign >= 0.0) {
lDQClusterDeformation[lIndex] += lInfluence;
} else {
lDQClusterDeformation[lIndex] -= lInfluence;
}
}
// Add to the sum of weights to either normalize or complete the vertex.
lClusterWeight[lIndex] += lWeight;
}
}//For each vertex
}//lClusterCount
}
//Actually deform each vertices here by information stored in lClusterDeformation and lClusterWeight
for(int i = 0; i < lVertexCount; i++) {
FbxVector4 lSrcVertex = pVertexArray[i];
FbxVector4& lDstVertex = pVertexArray[i];
double lWeightSum = lClusterWeight[i];
// Deform the vertex if there was at least a link with an influence on the vertex,
if(lWeightSum != 0.0) {
lDQClusterDeformation[i].Normalize();
lDstVertex = lDQClusterDeformation[i].Deform(lDstVertex);
if(lClusterMode == FbxCluster::eNormalize) {
// In the normalized link mode, a vertex is always totally influenced by the links.
lDstVertex /= lWeightSum;
} else if(lClusterMode == FbxCluster::eTotalOne) {
// In the total 1 link mode, a vertex can be partially influenced by the links.
lSrcVertex *= (1.0 - lWeightSum);
lDstVertex += lSrcVertex;
}
}
}
delete [] lDQClusterDeformation;
delete [] lClusterWeight;
}
Bone::Bone(FbxScene& scene) {
//construct hierarchy
*this = Bone { *(scene.GetRootNode()) };
std::map<std::string, std::pair<unsigned int, scm::math::mat4f> > bone_info{}
;
unsigned num_bones = 0;
for (unsigned int i = 0; i < scene.GetGeometryCount(); i++) {
FbxGeometry* geo = scene.GetGeometry(i);
if (geo->GetAttributeType() == FbxNodeAttribute::eMesh) {
//check for skinning, use first skin deformer
FbxSkin* skin;
for (unsigned i = 0; i < geo->GetDeformerCount(); ++i) {
FbxDeformer* defPtr = { geo->GetDeformer(i) };
if (defPtr->GetDeformerType() == FbxDeformer::eSkin) {
skin = static_cast<FbxSkin*>(defPtr);
break;
}
}
if (!skin) {
Logger::LOG_ERROR << "Mesh does not contain skin deformer" << std::endl;
assert(false);
}
//one cluster corresponds to one bone
for (unsigned i = 0; i < skin->GetClusterCount(); ++i) {
FbxCluster* cluster = skin->GetCluster(i);
FbxNode* node = cluster->GetLink();
if (!node) {
Logger::LOG_ERROR << "associated node does not exist!" << std::endl;
assert(false);
}
std::string bone_name(node->GetName());
//helper to check for matrix magnitude
auto magnitude = [](scm::math::mat4f const & mat)->float {
float mag = 0.0f;
for (unsigned i = 0; i < 16; ++i) {
mag += mat[i] * mat[i];
}
return mag;
}
;
//reference pose of bone
FbxAMatrix bind_transform;
cluster->GetTransformLinkMatrix(bind_transform);
//check if the clusters have an extra transformation
FbxAMatrix cluster_transform;
cluster->GetTransformMatrix(cluster_transform);
if (magnitude(to_gua::mat4f(cluster_transform) -
scm::math::mat4f::identity()) > 0.000000001f) {
Logger::LOG_WARNING
<< "weight cluster of bone '" << bone_name
<< "' has transformation, animation will be skewed" << std::endl;
}
//add bone to list if it is not already included
if (bone_info.find(bone_name) == bone_info.end()) {
bone_info[bone_name] = std::make_pair(
num_bones,
to_gua::mat4f(bind_transform.Inverse() * cluster_transform));
++num_bones;
}
}
// traverse hierarchy and set accumulated values in the bone
this->set_properties(bone_info);
}
}
}
//===============================================================================================================================
void FBXLoader::LoadJointsAndAnimation(FbxNode* inNode)
{
// This is how each subset gets its bone/joint for animation
FBXSubsets* subset = mSubsets[iCurrentSubset];
FbxMesh* mesh = inNode->GetMesh();
uint32 numOfDeformers = mesh->GetDeformerCount();
FbxAMatrix geomTrans = ZShadeSandboxMesh::FBXHelper::GetGeometryTransformation(inNode);
// A deformer contains clusters.
// A cluster contains a link, which is a joint.
// Normally, There is only one deformer in a mesh but Maya has many types.
for (uint32 deformerIndex = 0; deformerIndex < numOfDeformers; ++deformerIndex)
{
// Lets see if this deformer is a skin
FbxSkin* skin = reinterpret_cast<FbxSkin*>(mesh->GetDeformer(deformerIndex, FbxDeformer::eSkin));
if (!skin) continue;
uint32 numOfClusters = skin->GetClusterCount();
for (uint32 clusterIndex = 0; clusterIndex < numOfClusters; ++clusterIndex)
{
FbxCluster* cluster = skin->GetCluster(clusterIndex);
string jointName = cluster->GetLink()->GetName();
uint32 jointIndex = FindJointIndexUsingName(jointName);
subset->mJoints.push_back(jointIndex);
FbxAMatrix transform;
FbxAMatrix transformLink;
FbxAMatrix globalBindposeInverse;
// The transformation of the mesh at binding time
cluster->GetTransformMatrix(transform);
// The transformation of the cluster (joint) at binding time from joint space to world space
cluster->GetTransformLinkMatrix(transformLink);
globalBindposeInverse = transformLink.Inverse() * transform * geomTrans;
// Update skeletal information
mSkeleton.joints[jointIndex].globalBindposeInverse = globalBindposeInverse;
mSkeleton.joints[jointIndex].node = cluster->GetLink();
// Associate each joint with the control points it affects
uint32 numOfIndices = cluster->GetControlPointIndicesCount();
for (uint32 i = 0; i < numOfIndices; ++i)
{
ZShadeSandboxMesh::BlendingIndexWeightPair currBlendingIndexWeightPair;
currBlendingIndexWeightPair.blendingIndex = jointIndex;
currBlendingIndexWeightPair.blendingWeight = cluster->GetControlPointWeights()[i];
mControlPoints[cluster->GetControlPointIndices()[i]]->blendingInfo.push_back(currBlendingIndexWeightPair);
}
// Animation information
FbxAnimStack* animStack = m_pFbxScene->GetSrcObject<FbxAnimStack>(0);
FbxString animStackName = animStack->GetName();
mAnimationName = animStackName.Buffer();
FbxTakeInfo* takeInfo = m_pFbxScene->GetTakeInfo(animStackName);
FbxTime start = takeInfo->mLocalTimeSpan.GetStart();
FbxTime end = takeInfo->mLocalTimeSpan.GetStop();
mAnimationLength = end.GetFrameCount(FbxTime::eFrames24) - start.GetFrameCount(FbxTime::eFrames24) + 1;
FBXKeyframe** anim = &mSkeleton.joints[jointIndex].animation;
for (FbxLongLong i = start.GetFrameCount(FbxTime::eFrames24); i <= end.GetFrameCount(FbxTime::eFrames24); ++i)
{
FbxTime time;
time.SetFrame(i, FbxTime::eFrames24);
*anim = new FBXKeyframe();
(*anim)->frameNum = i;
FbxAMatrix currentTransformOffset = inNode->EvaluateGlobalTransform(time) * geomTrans;
(*anim)->globalTransform = currentTransformOffset.Inverse() * cluster->GetLink()->EvaluateGlobalTransform(time);
anim = &((*anim)->next);
}
}
}
// Some control points have less than 4 joints
// For a normal renderer, there are usually 4 joints
ZShadeSandboxMesh::BlendingIndexWeightPair currBlendingIndexWeightPair;
currBlendingIndexWeightPair.blendingIndex = 0;
currBlendingIndexWeightPair.blendingWeight = 0;
for (auto itr = mControlPoints.begin(); itr != mControlPoints.end(); ++itr)
{
for (unsigned int i = itr->second->blendingInfo.size(); i <= 4; ++i)
{
itr->second->blendingInfo.push_back(currBlendingIndexWeightPair);
}
}
}
void FbxLoader::ProcessBoneAndAnimation(FbxNode* node, Node& meshNode)
{
auto currMesh = node->GetMesh();
if(!currMesh) return;
FbxVector4 lT = node->GetGeometricTranslation(FbxNode::eSourcePivot);
FbxVector4 lR = node->GetGeometricRotation(FbxNode::eSourcePivot);
FbxVector4 lS = node->GetGeometricScaling(FbxNode::eSourcePivot);
FbxAMatrix geometryTransform = FbxAMatrix(lT, lR, lS);
FbxSkin* skin = nullptr;
const int deformerCnt = currMesh->GetDeformerCount();
for(int deformerIndex = 0; deformerIndex < deformerCnt; ++deformerIndex) {
skin = (FbxSkin*)(currMesh->GetDeformer(deformerIndex, FbxDeformer::eSkin));
if(skin) break;
}
if(!skin) return;
meshNode.useSkinnedMesh = true;
const size_t nClusters = skin->GetClusterCount();
if(nClusters < 1) return;
for(auto& clip : animationClips)
clip.second->transformCurves.resize(nClusters);
meshNode.bones.resize(nClusters);
const int animCount = scene->GetSrcObjectCount<FbxAnimStack>();
float time = 0;
for(int ci = 0; ci < nClusters; ++ci) {
FbxCluster* cluster = skin->GetCluster(ci);
auto elink = cluster->GetLinkMode();
std::string boneName = cluster->GetLink()->GetName();
FbxAMatrix transformMatrix, transformLinkMatrix, globalBindposeInverse;
cluster->GetTransformMatrix(transformMatrix);
cluster->GetTransformLinkMatrix(transformLinkMatrix);
globalBindposeInverse = transformLinkMatrix.Inverse() * geometryTransform * transformMatrix;
FbxNode* boneNode = cluster->GetLink();
Bone& bone = meshNode.bones[ci];
bone.name = boneName;
bone.index = ci;
auto T = globalBindposeInverse.GetT() * factor;
if(axismode == eLeftHanded) {
auto R = globalBindposeInverse.GetR();
T[0] *= -1; R[1] *= -1; R[2] *= -1;
globalBindposeInverse.SetR(R);
}
globalBindposeInverse.SetT(T);
ConvertMatrix(bone.bindPoseInverse, globalBindposeInverse);
const int nCtrl = cluster->GetControlPointIndicesCount();
for(int ctrlIndex = 0; ctrlIndex < nCtrl; ++ctrlIndex) {
BlendWeightPair pair;
pair.boneIndex = ci;
pair.weight = (float)cluster->GetControlPointWeights()[ctrlIndex];
meshNode.controlPoints[cluster->GetControlPointIndices()[ctrlIndex]].blendWeigths.push_back(pair);
}
FbxAMatrix preRot;
auto preR = boneNode->GetPreRotation(FbxNode::eSourcePivot);
preRot.SetR(preR);
for(int ai = 0; ai < animCount; ++ai) {
auto animStack = scene->GetSrcObject<FbxAnimStack>(ai);
scene->SetCurrentAnimationStack(animStack);
std::string animName = animStack->GetName();
auto& clip = animationClips[animName];
auto& transformCurve = clip->transformCurves[ci];
transformCurve.boneName = boneName;
transformCurve.begin = 0;
auto animLayer = animStack->GetMember<FbxAnimLayer>(0);
FbxAnimCurve* fbxTCurves[3];
FbxAnimCurve* fbxRCurves[3];
FbxAnimCurve* fbxSCurves[3];
fbxTCurves[0] = boneNode->LclTranslation.GetCurve(animLayer, "X");
if(!fbxTCurves[0])
continue;
fbxTCurves[1] = boneNode->LclTranslation.GetCurve(animLayer, "Y");
fbxTCurves[2] = boneNode->LclTranslation.GetCurve(animLayer, "Z");
fbxRCurves[0] = boneNode->LclRotation.GetCurve(animLayer, "X");
fbxRCurves[1] = boneNode->LclRotation.GetCurve(animLayer, "Y");
fbxRCurves[2] = boneNode->LclRotation.GetCurve(animLayer, "Z");
fbxSCurves[0] = boneNode->LclScaling.GetCurve(animLayer, "X");
fbxSCurves[1] = boneNode->LclScaling.GetCurve(animLayer, "Y");
fbxSCurves[2] = boneNode->LclScaling.GetCurve(animLayer, "Z");
// set & apply filter
FbxAnimCurveFilterKeyReducer keyReducer;
keyReducer.SetKeySync(false);
keyReducer.Apply(fbxTCurves, 3);
keyReducer.Apply(fbxSCurves, 3);
keyReducer.SetKeySync(true);
keyReducer.Apply(fbxRCurves, 3);
FbxAnimCurveFilterUnroll unroll;
unroll.SetForceAutoTangents(true);
unroll.Apply(fbxRCurves, 3);
FbxAnimCurveFilterTSS tss;
FbxTime tt;
tt.SetSecondDouble(-fbxTCurves[0]->KeyGetTime(0).GetSecondDouble());
tss.SetShift(tt);
tss.Apply(fbxTCurves, 3);
tss.Apply(fbxRCurves, 3);
tss.Apply(fbxSCurves, 3);
//
// process curves
if(fbxTCurves[0]->KeyGetCount() > 0) {
ProcessAnimCurveT(fbxTCurves, transformCurve);
ProcessAnimCurveS(fbxSCurves, transformCurve);
ProcessAnimCurveR(fbxRCurves, transformCurve, preRot);
//clamping by reduced keyframes
clip->startTime = 0;
clip->lengthInSeconds = transformCurve.end;
clip->lengthInFrames = (int)(1.5f + (transformCurve.end / (1 / 30.0f)));
}
} // animations loop
} // cluster loop
}
void fbxLoader2::readAnimationWeigths(FbxMesh* mesh)
{
if(!animationStructure)
{
animationStructure = new AnimationData();
}
int numSkins = mesh->GetDeformerCount(FbxDeformer::eSkin);
weightsNumber = 0;
for (int l = 0; l<this->vertexMaxCount; l++)
{
for(int p = 0; p<4; p++)
{
this->vertexArray[l].weights[p].boneID = 0;
this->vertexArray[l].weights[p].weight = 0.0f;
}
}
int next = 0;
int numindicestest = 0;
for(int i = 0; i < numSkins; i++)
{
FbxSkin* skin = (FbxSkin*) mesh->GetDeformer(i, FbxDeformer::eSkin);
int clusterCount = skin->GetClusterCount();
if( clusterCount == 0 ) continue;
for (int j = 0; j < clusterCount; j++)
{
FbxCluster* cluster = skin->GetCluster(j);///trzeba jakoś zrobić wszystkie linki... edit, have no idea what i meant xD
FbxNode* bone = cluster->GetLink();
if( !bone )
{
continue;
}
int numInfluencedVertices = cluster->GetControlPointIndicesCount();
int* pIndexArray = cluster->GetControlPointIndices();
numindicestest += cluster->GetControlPointIndicesCount();
double *pWeightArray = cluster->GetControlPointWeights();
for(int iControlPoint = 0; iControlPoint < numInfluencedVertices; iControlPoint++)
{
/*int iControlPointIndex = pIndexArray[iControlPoint];
////////////muszę poprawić indeksy wierzchołków. teraz odwoluje sie do vertow afaik
int boneIndex = skeleton->GetBoneByName(bone->GetName());
int boneI = skeleton->GetBoneIndex(boneIndex);
//boneIndices[iControlPointIndex] = iCluster;
double weightAdd = pWeightArray[iControlPoint];
weightsStructure* added = new weightsStructure(boneI, iControlPointIndex, weightAdd);
this->weights[next] = added;
next++;*/
int iControlPointIndex = pIndexArray[iControlPoint];
int boneIndex = skeleton->GetBoneByName(bone->GetName());
int k = 0;
if(vertexArray[iControlPointIndex].weights[0].weight == 0.0f)
{
vertexArray[iControlPointIndex].weights[0].boneID = skeleton->GetBoneIndex(boneIndex);
vertexArray[iControlPointIndex].weights[0].weight = pWeightArray[iControlPoint];
vertexArray[iControlPointIndex].weightsNum = 1;
}
else
{
while (k < 3 && vertexArray[iControlPointIndex].weights[k].weight != 0.0f)
{
k++;
}
vertexArray[iControlPointIndex].weights[k].boneID = skeleton->GetBoneIndex(boneIndex);
vertexArray[iControlPointIndex].weights[k].weight = pWeightArray[iControlPoint];
vertexArray[iControlPointIndex].weightsNum++;
}
}
}
}
}
//-----------------------------------------------------------------------------------
static void GetSkinWeights(SceneImport* import, std::vector<SkinWeight>& skinWeights, const FbxMesh* mesh, std::map<int, FbxNode*>& nodeToJointIndex)
{
int controlPointCount = mesh->GetControlPointsCount();
skinWeights.resize(controlPointCount);
for (size_t i = 0; i < skinWeights.size(); ++i)
{
skinWeights[i].indices = Vector4Int(0, 0, 0, 0);
skinWeights[i].weights = Vector4(0.0f, 0.0f, 0.0f, 0.0f);
}
int deformerCount = mesh->GetDeformerCount((FbxDeformer::eSkin));
ASSERT_OR_DIE(deformerCount == 1, "Deformer count wasn't 1");
for (int deformerIndex = 0; deformerIndex < deformerCount; ++deformerIndex)
{
FbxSkin* skin = (FbxSkin*)mesh->GetDeformer(deformerIndex, FbxDeformer::eSkin);
if (skin == nullptr)
{
continue;
}
//Clusters are a link between this skin object, bones, and the verts that bone affects.
int clusterCount = skin->GetClusterCount();
for (int clusterIndex = 0; clusterIndex < clusterCount; ++clusterIndex)
{
FbxCluster* cluster = skin->GetCluster(clusterIndex);
const FbxNode* linkNode = cluster->GetLink();
//Not associated with a bone? Ignore it, we don't care about it
if (linkNode == nullptr)
{
continue;
}
int jointIndex = Skeleton::INVALID_JOINT_INDEX;
for (auto iter = nodeToJointIndex.begin(); iter != nodeToJointIndex.end(); ++iter)
{
if (iter->second == linkNode)
{
jointIndex = iter->first;
break;
}
}
if (jointIndex == Skeleton::INVALID_JOINT_INDEX)
{
continue;
}
int* controlPointIndices = cluster->GetControlPointIndices();
int indexCount = cluster->GetControlPointIndicesCount();
double* weights = cluster->GetControlPointWeights();
for (int i = 0; i < indexCount; ++i)
{
int controlIndex = controlPointIndices[i];
double weight = weights[i];
SkinWeight* skinWeight = &skinWeights[controlIndex];
AddHighestWeightWhileKickingTheLowestWeightOut(skinWeight, jointIndex, (float)weight);
}
}
}
for (SkinWeight& sw : skinWeights)
{
//Renormalize all the skin weights
//Be sure to set weights such that all weights add up to 1
//All weights should add up to 1, so things that were all zeroes add up to 1
//If skin-weights were never added, make sure you set it to 1, 0, 0, 0
float totalWeight = sw.weights.x + sw.weights.y + sw.weights.z + sw.weights.w;
if(totalWeight > 0.0f)
{
sw.weights /= totalWeight;
}
else
{
sw.weights = { 1.0f, 0.0f, 0.0f, 0.0f };
}
}
}
