/**
* Add a bind pose to the scene based on the FbxMesh and skinning settings of the given node
*/
void FFbxExporter::CreateBindPose(FbxNode* MeshRootNode)
{
if (!MeshRootNode)
{
return;
}
// In the bind pose, we must store all the link's global matrix at the time of the bind.
// Plus, we must store all the parent(s) global matrix of a link, even if they are not
// themselves deforming any model.
// Create a bind pose with the link list
FbxArray<FbxNode*> lClusteredFbxNodes;
int i, j;
if (MeshRootNode->GetNodeAttribute())
{
int lSkinCount=0;
int lClusterCount=0;
switch (MeshRootNode->GetNodeAttribute()->GetAttributeType())
{
case FbxNodeAttribute::eMesh:
case FbxNodeAttribute::eNurbs:
case FbxNodeAttribute::ePatch:
lSkinCount = ((FbxGeometry*)MeshRootNode->GetNodeAttribute())->GetDeformerCount(FbxDeformer::eSkin);
//Go through all the skins and count them
//then go through each skin and get their cluster count
for(i=0; i<lSkinCount; ++i)
{
FbxSkin *lSkin=(FbxSkin*)((FbxGeometry*)MeshRootNode->GetNodeAttribute())->GetDeformer(i, FbxDeformer::eSkin);
lClusterCount+=lSkin->GetClusterCount();
}
break;
}
//if we found some clusters we must add the node
if (lClusterCount)
{
//Again, go through all the skins get each cluster link and add them
for (i=0; i<lSkinCount; ++i)
{
FbxSkin *lSkin=(FbxSkin*)((FbxGeometry*)MeshRootNode->GetNodeAttribute())->GetDeformer(i, FbxDeformer::eSkin);
lClusterCount=lSkin->GetClusterCount();
for (j=0; j<lClusterCount; ++j)
{
FbxNode* lClusterNode = lSkin->GetCluster(j)->GetLink();
AddNodeRecursively(lClusteredFbxNodes, lClusterNode);
}
}
// Add the patch to the pose
lClusteredFbxNodes.Add(MeshRootNode);
}
}
// Now create a bind pose with the link list
if (lClusteredFbxNodes.GetCount())
{
// A pose must be named. Arbitrarily use the name of the patch node.
FbxPose* lPose = FbxPose::Create(Scene, MeshRootNode->GetName());
// default pose type is rest pose, so we need to set the type as bind pose
lPose->SetIsBindPose(true);
for (i=0; i<lClusteredFbxNodes.GetCount(); i++)
{
FbxNode* lKFbxNode = lClusteredFbxNodes.GetAt(i);
FbxMatrix lBindMatrix = lKFbxNode->EvaluateGlobalTransform();
lPose->Add(lKFbxNode, lBindMatrix);
}
// Add the pose to the scene
Scene->AddPose(lPose);
}
}
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);
}
