public void Skin_SetGeometry_SetsGeometry()
{
// given:
var skin = new FbxSkin("");
var mesh = new FbxMesh("");
// require:
Assert.AreEqual(0, skin.GetSrcObjectCount());
Assert.AreEqual(0, skin.GetDstObjectCount());
Assert.AreEqual(null, skin.GetGeometry());
Assert.AreEqual(0, mesh.GetSrcObjectCount());
Assert.AreEqual(0, mesh.GetDstObjectCount());
Assert.AreEqual(0, mesh.GetDeformerCount());
// when:
skin.SetGeometry(mesh);
// then:
Assert.AreEqual(0, skin.GetSrcObjectCount());
Assert.AreEqual(1, skin.GetDstObjectCount());
Assert.AreSame(mesh, skin.GetGeometry());
Assert.AreEqual(1, mesh.GetSrcObjectCount());
Assert.AreEqual(0, mesh.GetDstObjectCount());
Assert.AreEqual(1, mesh.GetDeformerCount());
Assert.AreSame(skin, mesh.GetDeformer(0));
}
// key - control point index
public static Dictionary <int, BoneAssignment> GetBoneAssignments(FbxMesh mesh, Skeleton skeleton)
{
var boneAssignments = new Dictionary <int, BoneAssignment>();
var weightLists = new Dictionary <int, List <(int, double)> >();
int skinCount = mesh.GetDeformerCount(FbxDeformer.EDeformerType.eSkin);
if (skinCount == 0)
{
return(null);
}
if (1 < skinCount)
{
FbxImportLog.LogMessage(mesh.GetNode(), "Warning! Multiple skins for the mesh"); //??? Может ли быть в одном Mesh несколько Skins? Скорее всего нет, хоть API позволяет.
}
FbxSkin pSkin = FbxSkin.Cast(mesh.GetDeformer(0, FbxDeformer.EDeformerType.eSkin));
int clusterCount = pSkin.GetClusterCount();
for (int iCluster = 0; iCluster < clusterCount; iCluster++)
{
FbxCluster pCluster = pSkin.GetCluster(iCluster);
FbxNode pLink = pCluster.GetLink();
if (pLink == null)
{
continue;
}
int weightCount = pCluster.GetControlPointIndicesCount();
if (weightCount == 0)
{
continue;
}
int boneIndex = skeleton.GetBoneIndexByNode(pLink);
var weightIndices = IntArray.frompointer(pCluster.GetControlPointIndices());
var weightValues = DoubleArray.frompointer(pCluster.GetControlPointWeights());
for (int i = 0; i < weightCount; i++)
{
int vertexIndex = weightIndices.getitem(i);
double weight = weightValues.getitem(i);
if (!weightLists.TryGetValue(vertexIndex, out var lst))
{
lst = new List <(int, double)>();
weightLists[vertexIndex] = lst;
}
lst.Add((boneIndex, weight));
}
}
foreach (var pair in weightLists)
{
boneAssignments[pair.Key] = ConvertBoneWeightListToBoneAssignment(pair.Value);
}
return(boneAssignments);
}
public void Geometry_DisconnectSrcObject_RemovesDeformer()
{
// given:
var g = new FbxMesh("");
var skin = new FbxSkin("");
g.AddDeformer(skin);
// require:
Assert.AreEqual(1, g.GetDeformerCount());
Assert.AreEqual(1, g.GetSrcObjectCount());
// when:
g.DisconnectSrcObject(skin);
// then:
Assert.AreEqual(0, g.GetDeformerCount());
Assert.AreEqual(0, g.GetSrcObjectCount());
}
public void Geometry_AddSrcConnection_AddsDeformer()
{
// given:
var g = new FbxMesh("");
var skin = new FbxSkin("");
// require:
Assert.AreEqual(0, g.GetDeformerCount());
Assert.AreEqual(0, g.GetSrcObjectCount());
// when:
g.ConnectSrcObject(skin);
// then:
Assert.AreEqual(1, g.GetDeformerCount());
Assert.AreSame(skin, g.GetDeformer(0));
Assert.AreEqual(1, g.GetSrcObjectCount());
Assert.AreSame(skin, g.GetSrcObject(0));
}
static void LoadSkinsFromNodeRecursive(FbxNode pNode, List <FbxSkin> skinsResult)
{
FbxNodeAttribute pNodeAttribute = pNode.GetNodeAttribute();
if (pNodeAttribute?.GetAttributeType() == FbxNodeAttribute.EType.eMesh)
{
FbxMesh pMesh = pNode.GetMesh();
int skinCount = pMesh.GetDeformerCount(FbxDeformer.EDeformerType.eSkin);
for (int i = 0; i < skinCount; i++)
{
FbxSkin pSkin = FbxSkin.Cast(pMesh.GetDeformer(i, FbxDeformer.EDeformerType.eSkin));
skinsResult.Add(pSkin);
}
}
for (int i = 0; i < pNode.GetChildCount(); i++)
{
LoadSkinsFromNodeRecursive(pNode.GetChild(i), skinsResult);
}
}