protected void LinkMeshToSkeleton(FbxScene scene, FbxNode meshNode, FbxNode skelRootNode)
{
FbxNode limb1 = skelRootNode.GetChild(0);
FbxNode limb2 = limb1.GetChild(0);
FbxCluster rootCluster = FbxCluster.Create(scene, "RootCluster");
rootCluster.SetLink(skelRootNode);
rootCluster.SetLinkMode(FbxCluster.ELinkMode.eTotalOne);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
rootCluster.AddControlPointIndex(4 * i + j, 1.0 - 0.25 * i);
}
}
FbxCluster limb1Cluster = FbxCluster.Create(scene, "Limb1Cluster");
limb1Cluster.SetLink(limb1);
limb1Cluster.SetLinkMode(FbxCluster.ELinkMode.eTotalOne);
for (int i = 1; i < 6; i++)
{
for (int j = 0; j < 4; j++)
{
limb1Cluster.AddControlPointIndex(4 * i + j, (i == 1 || i == 5 ? 0.25 : 0.5));
}
}
FbxCluster limb2Cluster = FbxCluster.Create(scene, "Limb2Cluster");
limb2Cluster.SetLink(limb2);
limb2Cluster.SetLinkMode(FbxCluster.ELinkMode.eTotalOne);
for (int i = 3; i < 7; i++)
{
for (int j = 0; j < 4; j++)
{
limb2Cluster.AddControlPointIndex(4 * i + j, 0.25 * (i - 2));
}
}
FbxAMatrix globalTransform = meshNode.EvaluateGlobalTransform();
rootCluster.SetTransformMatrix(globalTransform);
limb1Cluster.SetTransformMatrix(globalTransform);
limb2Cluster.SetTransformMatrix(globalTransform);
rootCluster.SetTransformLinkMatrix(skelRootNode.EvaluateGlobalTransform());
limb1Cluster.SetTransformLinkMatrix(limb1.EvaluateGlobalTransform());
limb2Cluster.SetTransformLinkMatrix(limb2.EvaluateGlobalTransform());
FbxSkin skin = FbxSkin.Create(scene, "Skin");
skin.AddCluster(rootCluster);
skin.AddCluster(limb1Cluster);
skin.AddCluster(limb2Cluster);
meshNode.GetMesh().AddDeformer(skin);
}
public void TestAddCluster()
{
var fbxSkin = CreateObject("skin");
var fbxCluster = FbxCluster.Create(Manager, "cluster");
bool result = fbxSkin.AddCluster(fbxCluster);
Assert.IsTrue(result);
Assert.AreEqual(fbxSkin.GetCluster(0), fbxCluster);
// test adding null cluster
Assert.That(() => { fbxSkin.AddCluster(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
// add invalid cluster
var fbxCluster2 = FbxCluster.Create(Manager, "cluster2");
fbxCluster2.Dispose();
Assert.That(() => { fbxSkin.AddCluster(fbxCluster2); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
}
/// <summary>
/// Export binding of mesh to skeleton
/// </summary>
protected void ExportSkin(MeshInfo meshInfo, FbxScene fbxScene, FbxMesh fbxMesh,
FbxNode fbxRootNode,
Dictionary <Transform, FbxNode> boneNodes)
{
SkinnedMeshRenderer unitySkinnedMeshRenderer
= meshInfo.renderer as SkinnedMeshRenderer;
FbxSkin fbxSkin = FbxSkin.Create(fbxScene, (meshInfo.unityObject.name + "_Skin"));
FbxAMatrix fbxMeshMatrix = fbxRootNode.EvaluateGlobalTransform();
// keep track of the bone index -> fbx cluster mapping, so that we can add the bone weights afterwards
Dictionary <int, FbxCluster> boneCluster = new Dictionary <int, FbxCluster> ();
for (int i = 0; i < unitySkinnedMeshRenderer.bones.Length; i++)
{
FbxNode fbxBoneNode = boneNodes [unitySkinnedMeshRenderer.bones[i]];
// Create the deforming cluster
FbxCluster fbxCluster = FbxCluster.Create(fbxScene, "BoneWeightCluster");
fbxCluster.SetLink(fbxBoneNode);
fbxCluster.SetLinkMode(FbxCluster.ELinkMode.eTotalOne);
boneCluster.Add(i, fbxCluster);
// set the Transform and TransformLink matrix
fbxCluster.SetTransformMatrix(fbxMeshMatrix);
FbxAMatrix fbxLinkMatrix = fbxBoneNode.EvaluateGlobalTransform();
fbxCluster.SetTransformLinkMatrix(fbxLinkMatrix);
// add the cluster to the skin
fbxSkin.AddCluster(fbxCluster);
}
// set the vertex weights for each bone
SetVertexWeights(meshInfo, boneCluster);
// Add the skin to the mesh after the clusters have been added
fbxMesh.AddDeformer(fbxSkin);
}
protected override FbxSkin GenerateFbx()
{
MeshExportData meshData = Souls.meshData.SoulsData;
ICollection <BoneIndexToWeightPair> rawBoneDeformerData = new List <BoneIndexToWeightPair>();
for (int vertexIndex = 0; vertexIndex < meshData.mesh.Vertices.Count; ++vertexIndex)
{
FLVER.Vertex vertex = meshData.mesh.Vertices[vertexIndex];
const int maxVertexDeformations = 4;
for (int vertexDeformationIndex = 0; vertexDeformationIndex < maxVertexDeformations; ++vertexDeformationIndex)
{
BoneIndexToWeightPair weightData = new BoneIndexToWeightPair()
{
flverBoneIndex = vertex.BoneIndices[vertexDeformationIndex],
boneWeight = vertex.BoneWeights[vertexDeformationIndex],
vertexIndex = vertexIndex
};
if (weightData.flverBoneIndex > 0 && weightData.boneWeight > 0)
{
rawBoneDeformerData.Add(weightData);
}
}
}
foreach (var ddd in rawBoneDeformerData.GroupBy(boneDeformerData => boneDeformerData.vertexIndex).Select(boneDeformedGroup => (vertexIndex: boneDeformedGroup.Key, affectingBonesCount: boneDeformedGroup.Count())).Where((ddd) => ddd.affectingBonesCount > 4))
{
System.Console.WriteLine($"Vertex {ddd.vertexIndex} : {ddd.affectingBonesCount}");
}
foreach (var ddd in rawBoneDeformerData.GroupBy(boneDeformedData => boneDeformedData.flverBoneIndex).Select(boneDeformerGroup => (boneIndex: boneDeformerGroup.Key, affectingVerticesCount: boneDeformerGroup.Count(), uniqueAffectingVerticesCount: boneDeformerGroup.Select(boneDeformerData => boneDeformerData.vertexIndex).Distinct().Count())))
{
if (ddd.affectingVerticesCount != ddd.uniqueAffectingVerticesCount)
{
System.Console.WriteLine($"Bone {ddd.boneIndex} : vertices {ddd.affectingVerticesCount} : unique {ddd.uniqueAffectingVerticesCount}");
}
}
FbxSkin skin = FbxSkin.Create(Owner, meshData.meshRoot.Name + "_Skin");
System.Console.WriteLine($"Generating {meshData.meshRoot.Name}");
foreach (var deformerData in rawBoneDeformerData.ToLookup(boneDeformerData => boneDeformerData.flverBoneIndex))
{
FLVER2 flver = Souls.flver;
FLVER.Bone flverBone = flver.Bones[deformerData.Key];
DsBoneData boneData = Souls.skeleton.boneDatas.Single(boneData => boneData.flverBone == flverBone);
//System.Console.WriteLine($"Exporting {deformerData.Key} : {flverBone.Name} with {deformerData.Count(weight=>weight.boneWeight > 0)} vertices");
FbxCluster boneCluster = FbxCluster.Create(skin, meshData.meshRoot.Name + "_" + boneData.exportData.SoulsData.Name + "_Cluster");
boneCluster.SetLink(boneData.exportData.FbxNode);
boneCluster.SetLinkMode(FbxCluster.ELinkMode.eTotalOne);
boneCluster.SetControlPointIWCount(deformerData.Count());
boneCluster.SetTransformMatrix(Souls.meshData.FbxNode.EvaluateGlobalTransform());
boneCluster.SetTransformLinkMatrix(boneData.exportData.FbxNode.EvaluateGlobalTransform());
foreach (BoneIndexToWeightPair boneWeightPair in deformerData)
{
boneCluster.AddControlPointIndex(boneWeightPair.vertexIndex, boneWeightPair.boneWeight);
//Console.WriteLine("Bone {0} has vertex {1} with weight {2}", flverBone.Name, boneWeightPair.vertexIndex, boneWeightPair.boneWeight);
}
skin.AddCluster(boneCluster);
}
//foreach (var dd in rawBoneDeformerData.GroupBy(biwp => biwp.vertexIndex).Where(group => group.Count() > 2))
//{
//System.Console.WriteLine($"Vertex {dd.Key} : {dd.Count()}");
//}
//var set = new HashSet<int>();
//for (int vertexIndex = 0; vertexIndex < meshData.mesh.Vertices.Count; ++vertexIndex)
//{
// if (!rawBoneDeformerData.Any(x=>x.vertexIndex == vertexIndex))
// {
// set.Add(vertexIndex);
// }
//}
//System.Console.WriteLine($"Total {set.Count} unweighted nodes");
return(skin);
}