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WIP add bone weight

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ousttrue 2022-06-17 15:24:21 +09:00
parent 0bcc0a1ed6
commit 03c2c83880
1 changed files with 39 additions and 1 deletions
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40
Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/SkinningInfo.cs
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@ -4,15 +4,53 @@ namespace UniGLTF
{
public JointsAccessor.Getter Joints;
public WeightsAccessor.Getter Weights;
public bool AssignBoneWeight { get; private set; }
public static SkinningInfo Create(GltfData data, glTFMesh mesh, glTFPrimitives primitives)
{
// var hasMorphTarget = HasMorphTarget(mesh);
var hasMorphTarget = false;
var positions = data.GLTF.accessors[primitives.attributes.POSITION];
return new SkinningInfo
var skinning = new SkinningInfo
{
Joints = primitives.GetJoints(data, positions.count),
Weights = primitives.GetWeights(data, positions.count),
};
if (skinning.Joints != null)
{
// use SkinnedMeshRenderer
return skinning;
}
else if (!hasMorphTarget)
{
// use MeshRenderer
return skinning;
}
else
{
// use SkinnedMeshRenderer without boneWeight.
// https://github.com/vrm-c/UniVRM/issues/1675
return new SkinningInfo
{
AssignBoneWeight = true,
Joints = _ => (0, 0, 0, 0),
Weights = _ => (1, 0, 0, 0), // assign weight 1
};
}
}
static bool HasMorphTarget(glTFMesh mesh)
{
foreach (var prim in mesh.primitives)
{
if (prim.targets != null && prim.targets.Count > 0)
{
return true;
}
}
return false;
}
private static (float x, float y, float z, float w) NormalizeBoneWeight(