// -----------------------------------------
// DumpGltfSkin
// -----------------------------------------
GLTF_Skin DumpGtlfSkin(SkinnedMeshRenderer _smr, List <GameObject> _joints, GameObject _rootBone, int _accBindposes)
{
Mesh mesh = _smr.sharedMesh;
if (mesh.bindposes.Length != _smr.bones.Length)
{
Debug.LogWarning("Failed to dump gltf-skin from " + _smr.name + ", please turn off \"Optimize Game Objects\" in the \"Rig\".");
return(null);
}
GLTF_Skin gltfSkin = new GLTF_Skin();
gltfSkin.name = _smr.name;
gltfSkin.inverseBindMatrices = _accBindposes;
gltfSkin.skeleton = _joints.IndexOf(_rootBone);
gltfSkin.joints = new int[_smr.bones.Length];
for (int i = 0; i < _smr.bones.Length; ++i)
{
gltfSkin.joints[i] = _joints.IndexOf(_smr.bones[i].gameObject);
}
return(gltfSkin);
}
// -----------------------------------------
// DumpSkinningModel
// -----------------------------------------
void DumpSkinningModel(GameObject _prefab, GLTF _gltf, BufferInfo _bufInfo)
{
// get joints
List <GameObject> joints = new List <GameObject>();
Utils.RecurseNode(_prefab, _go => {
// this is not a joint
if (_go.GetComponent <SkinnedMeshRenderer>() != null)
{
return(false);
}
joints.Add(_go);
return(true);
});
// get nodes
List <GameObject> nodes = new List <GameObject>();
Utils.RecurseNode(_prefab, _go => {
// this is a joint, skip it.
if (_go.GetComponents <Component>().Length == 1)
{
return(false);
}
nodes.Add(_go);
return(true);
});
// get skins & meshes
List <Mesh> meshes = new List <Mesh>();
List <SkinnedMeshRenderer> smrList = new List <SkinnedMeshRenderer>();
Utils.RecurseNode(_prefab, _go => {
SkinnedMeshRenderer smr = _go.GetComponent <SkinnedMeshRenderer>();
if (smr != null)
{
meshes.Add(smr.sharedMesh);
smrList.Add(smr);
}
return(true);
});
// dump nodes
foreach (GameObject go in nodes)
{
GLTF_Node gltfNode = DumpGltfNode(go, nodes);
SkinnedMeshRenderer smr = go.GetComponent <SkinnedMeshRenderer>();
if (smr != null)
{
gltfNode.mesh = meshes.IndexOf(smr.sharedMesh);
gltfNode.skin = smrList.IndexOf(smr);
}
_gltf.nodes.Add(gltfNode);
}
// dump joints
foreach (GameObject go in joints)
{
GLTF_Node gltfNode = DumpGltfNode(go, joints);
_gltf.joints.Add(gltfNode);
}
// dump meshes & skin
int accOffset = 0;
foreach (SkinnedMeshRenderer smr in smrList)
{
// dump mesh
accOffset = _bufInfo.GetAccessorCount();
DumpMesh(smr.sharedMesh, _gltf, _bufInfo, accOffset);
// dump skin
int accBindposesIdx = _bufInfo.GetAccessorCount() - 1;
GameObject rootBone = Utils.GetRootBone(smr, _prefab).gameObject;
GLTF_Skin gltfSkin = DumpGtlfSkin(smr, joints, rootBone, accBindposesIdx);
if (gltfSkin != null)
{
_gltf.skins.Add(gltfSkin);
}
}
}