public static ValueTuple <MeshGroup, MeshGroup> SepareteByHeadBone(this MeshGroup g, HashSet <int> boneIndices)
{
if (g.Meshes.Count > 1)
{
throw new NotImplementedException("MeshGroup.Meshes.Count must 1");
}
var src = g.Meshes[0];
if (src.Topology != TopologyType.Triangles)
{
throw new InvalidOperationException("not GltfPrimitiveMode.Triangles");
}
var(headTriangles, bodyTriangles) = MeshSplitter.SplitTrianglesByBoneIndices(src, boneIndices);
MeshGroup head = default(MeshGroup);
if (headTriangles.Any())
{
var mesh = MeshSplitter.SeparateMesh(src, headTriangles, true);
head = new MeshGroup(g.Name + ".headMesh")
{
Skin = g.Skin,
};
head.Meshes.Add(mesh);
}
MeshGroup body = default(MeshGroup);
if (bodyTriangles.Any())
{
var mesh = MeshSplitter.SeparateMesh(src, bodyTriangles);
body = new MeshGroup(g.Name)
{
Skin = g.Skin,
};
body.Meshes.Add(mesh);
}
return(head, body);
}
/// <summary>
/// MorphTarget が有る Mesh と無い Mesh に分ける
/// </summary>
/// <param name="g"></param>
/// <returns></returns>
public static ValueTuple <MeshGroup, MeshGroup> SepareteByMorphTarget(this MeshGroup g)
{
if (g.Meshes.Count > 1)
{
throw new NotImplementedException("MeshGroup.Meshes.Count must 1");
}
var src = g.Meshes[0];
if (src.Topology != TopologyType.Triangles)
{
throw new InvalidOperationException("not GltfPrimitiveMode.Triangles");
}
var(withTriangles, withoutTriangles) = MeshSplitter.SplitTriangles(src);
MeshGroup with = default(MeshGroup);
if (withTriangles.Any())
{
var mesh = MeshSplitter.SeparateMesh(src, withTriangles, true);
with = new MeshGroup(g.Name + ".blendshape")
{
Skin = g.Skin,
};
with.Meshes.Add(mesh);
}
MeshGroup without = default(MeshGroup);
if (withoutTriangles.Any())
{
var mesh = MeshSplitter.SeparateMesh(src, withoutTriangles);
without = new MeshGroup(g.Name)
{
Skin = g.Skin,
};
without.Meshes.Add(mesh);
}
return(with, without);
}
