void fbxLoader2::buildSkeleton(FbxNode *node)
{
std::string s2("Nub");
std::string s3("Footsteps");
std::string s1(node->GetName());
int found = s1.find(s2);
int found2 = s1.find(s3);
if( node->GetNodeAttribute())
{
switch(node->GetNodeAttribute()->GetAttributeType())
{
case FbxNodeAttribute::eSkeleton:
if (found == std::string::npos && found2 == std::string::npos)
{
FbxSkeleton *skeletalMesh = node->GetSkeleton();
if( !skeletalMesh ) return;
FbxNode* boneNode = skeletalMesh->GetNode();
buildSkeletonCycle(boneNode, -1);
//rootbone1 = true;
}
break;
}
}
for (int i = 0; i<node->GetChildCount(); i++)
{
FbxNode *child = node->GetChild(i);
//buildSkeleton(child);
}
}
/**
* Adds FBX skeleton nodes to the FbxScene based on the skeleton in the given USkeletalMesh, and fills
* the given array with the nodes created
*/
FbxNode* FFbxExporter::CreateSkeleton(const USkeletalMesh* SkelMesh, TArray<FbxNode*>& BoneNodes)
{
const FReferenceSkeleton& RefSkeleton= SkelMesh->RefSkeleton;
if(RefSkeleton.GetNum() == 0)
{
return NULL;
}
// Create a list of the nodes we create for each bone, so that children can
// later look up their parent
BoneNodes.Reserve(RefSkeleton.GetNum());
for(int32 BoneIndex = 0; BoneIndex < RefSkeleton.GetNum(); ++BoneIndex)
{
const FMeshBoneInfo& CurrentBone = RefSkeleton.GetRefBoneInfo()[BoneIndex];
const FTransform& BoneTransform = RefSkeleton.GetRefBonePose()[BoneIndex];
FbxString BoneName = Converter.ConvertToFbxString(CurrentBone.ExportName);
// Create the node's attributes
FbxSkeleton* SkeletonAttribute = FbxSkeleton::Create(Scene, BoneName.Buffer());
if(BoneIndex)
{
SkeletonAttribute->SetSkeletonType(FbxSkeleton::eLimbNode);
//SkeletonAttribute->Size.Set(1.0);
}
else
{
SkeletonAttribute->SetSkeletonType(FbxSkeleton::eRoot);
//SkeletonAttribute->Size.Set(1.0);
}
// Create the node
FbxNode* BoneNode = FbxNode::Create(Scene, BoneName.Buffer());
BoneNode->SetNodeAttribute(SkeletonAttribute);
// Set the bone node's local orientation
FVector UnrealRotation = BoneTransform.GetRotation().Euler();
FbxVector4 LocalPos = Converter.ConvertToFbxPos(BoneTransform.GetTranslation());
FbxVector4 LocalRot = Converter.ConvertToFbxRot(UnrealRotation);
BoneNode->LclTranslation.Set(LocalPos);
BoneNode->LclRotation.Set(LocalRot);
// If this is not the root bone, attach it to its parent
if(BoneIndex)
{
BoneNodes[CurrentBone.ParentIndex]->AddChild(BoneNode);
}
// Add the node to the list of nodes, in bone order
BoneNodes.Push(BoneNode);
}
return BoneNodes[0];
}
void LoadAnimation(AnimationData& aAnimation,FbxNode* aNode,FbxAMatrix& aParentOrientation, FbxPose* aPose, FbxAnimLayer* aCurrentAnimLayer, int parentBone)
{
FbxAMatrix lGlobalPosition = GetGlobalPosition(aNode, static_cast<FbxTime>(0.0f), aPose, &aParentOrientation);
FbxNodeAttribute* lNodeAttribute = aNode->GetNodeAttribute();
int boneId = -1;
if (lNodeAttribute)
{
if(lNodeAttribute->GetAttributeType() == FbxNodeAttribute::eSkeleton)
{
Bone newBone;
newBone.myAnimationTime = GetAnimationTime(aNode,aCurrentAnimLayer);
float oneFrameTime = 1.0f/24.0f;
CU::Matrix44f fixMatrix;
fixMatrix.myMatrix[0] = -1;
FbxAMatrix lLocalTransform = aNode->EvaluateLocalTransform();
newBone.myBaseOrientation = fixMatrix * CreateMatrix(lLocalTransform) * fixMatrix;
char buffer[32];
_itoa_s<32>(parentBone,buffer,10);
newBone.myName = aNode->GetName();
newBone.myName += buffer;
int lNodeIndex = aPose->Find(aNode);
auto bindPoseMatrix = aPose->GetMatrix(lNodeIndex);
FbxAMatrix bindMatrix;
memcpy((double*)bindMatrix, (double*)bindPoseMatrix, sizeof(bindMatrix.mData));
FbxAMatrix localPosOffset;
memcpy((double*)localPosOffset, (double*)bindPoseMatrix, sizeof(localPosOffset.mData));
localPosOffset = localPosOffset * aParentOrientation.Inverse();
newBone.myBindMatrix = fixMatrix * CreateMatrix(lGlobalPosition.Inverse()) * fixMatrix;
CU::Matrix44f localStartOffset = CreateMatrix(bindMatrix.Inverse());
for(float currentFrameTime = 0.0f;currentFrameTime < newBone.myAnimationTime;currentFrameTime+= oneFrameTime)
{
KeyFrame keyFrame;
keyFrame.myTime = currentFrameTime;
FbxTime time;
time.SetSecondDouble(currentFrameTime);
keyFrame.myMatrix = fixMatrix * CreateMatrix(aNode->EvaluateLocalTransform(time)) * fixMatrix;
newBone.myFrames.push_back(keyFrame);
}
FbxAMatrix animationMatrix;
FbxSkeleton* sekeleton = aNode->GetSkeleton();
if(sekeleton->IsSkeletonRoot())
{
aAnimation.myBindMatrix = CU::Matrix44<float>();
aAnimation.myRootBone = aAnimation.myBones.size();
}
boneId = aAnimation.myBones.size();
aNode->SetUserDataPtr((void*)boneId);
if(parentBone != -1)
{
aAnimation.myBones[parentBone].myChilds.push_back(boneId);
}
newBone.myId = boneId;
aAnimation.myBones.push_back(newBone);
}
}
const int lChildCount = aNode->GetChildCount();
for (int lChildIndex = 0; lChildIndex < lChildCount; ++lChildIndex)
{
LoadAnimation( aAnimation, aNode->GetChild(lChildIndex), lGlobalPosition , aPose, aCurrentAnimLayer, boneId);
}
}
void ExportBones(const Value& obj)
{
const Value& boneName = obj["BoneName"];
if (boneName.IsNull())
{
return;
}
//string name = obj["Name"].GetString();
const Value& parentIndex = obj["ParentIndex"];
const Value& boneTransform = obj["BoneTransform"];
fbxBones.resize(boneName.Size());
for (uint32_t i = 0; i < fbxBones.size(); i++)
{
FbxNode* boneNode = FbxNode::Create(pScene, boneName[i].GetString());
fbxBones[i] = boneNode;
double x, y, z, w;
x = boneTransform[i * 7 + 0].GetDouble();
x = -x;
y = boneTransform[i * 7 + 1].GetDouble();
z = boneTransform[i * 7 + 2].GetDouble();
boneNode->LclTranslation.Set(FbxDouble3(x, y, z));
x = boneTransform[i * 7 + 3].GetDouble();
y = boneTransform[i * 7 + 4].GetDouble();
z = boneTransform[i * 7 + 5].GetDouble();
w = boneTransform[i * 7 + 6].GetDouble();
FbxSkeleton* pSkeleton = FbxSkeleton::Create(pScene, boneName[i].GetString());
int parent = parentIndex[i].GetInt();
if (parent == -1) {
pSkeleton->SetSkeletonType(FbxSkeleton::eRoot);
}
else {
pSkeleton->SetSkeletonType(FbxSkeleton::eLimbNode);
pSkeleton->Size.Set(0.1);
}
boneNode->SetNodeAttribute(pSkeleton);
}
for (uint32_t i = 0; i < fbxBones.size(); i++) {
int parent = parentIndex[i].GetInt();
if (parent == -1) {
pScene->GetRootNode()->AddChild(fbxBones[i]);
}
else {
fbxBones[parent]->AddChild(fbxBones[i]);
}
}
FbxPose* lPose = FbxPose::Create(pScene, boneName[0].GetString());
// default pose type is rest pose, so we need to set the type as bind pose
lPose->SetIsBindPose(true);
for (uint32_t i = 0; i < fbxBones.size(); i++) {
FbxNode* lKFbxNode = fbxBones[i];
FbxMatrix lBindMatrix = lKFbxNode->EvaluateGlobalTransform();
lPose->Add(lKFbxNode, lBindMatrix);
}
pScene->AddPose(lPose);
}
