protected virtual void CreateMeshObject(GLTF.Schema.Mesh mesh, Transform parent, int meshId)
{
if (_assetCache.MeshCache[meshId] == null)
{
_assetCache.MeshCache[meshId] = new MeshCacheData[mesh.Primitives.Count];
}
for (int i = 0; i < mesh.Primitives.Count; ++i)
{
var primitive = mesh.Primitives[i];
var primitiveObj = CreateMeshPrimitive(primitive, meshId, i);
primitiveObj.transform.SetParent(parent, false);
primitiveObj.SetActive(true);
}
}
protected virtual void BuildAttributesForMeshes()
{
for (int i = 0; i < _root.Meshes.Count; ++i)
{
GLTF.Schema.Mesh mesh = _root.Meshes[i];
if (_assetCache.MeshCache[i] == null)
{
_assetCache.MeshCache[i] = new MeshCacheData[mesh.Primitives.Count];
}
for (int j = 0; j < mesh.Primitives.Count; ++j)
{
_assetCache.MeshCache[i][j] = new MeshCacheData();
var primitive = mesh.Primitives[j];
BuildMeshAttributes(primitive, i, j);
}
}
}
//
private void ExportMesh()
{
var mesh = new GLTF.Schema.Mesh();
mesh.Primitives = new List <MeshPrimitive>();
if (this._target.GetComponent <UnityEngine.SkinnedMeshRenderer>() != null)
{
var skin = this._target.GetComponent <UnityEngine.SkinnedMeshRenderer>();
var parent = _target.parent;
var allBones = _getAllChildren(parent);
var gltfSKIN = new Skin
{
Joints = new List <NodeId>()
};
_root.Nodes = new List <Node>();
_root.Skins = new List <Skin>();
_root.Skins.Add(gltfSKIN);
foreach (var bone in allBones)
{
var translation = bone.localPosition;
var rotation = bone.localRotation;
var scale = bone.localScale;
var node = new Node
{
Name = bone.gameObject.name,
Translation = new GLTF.Math.Vector3(translation.x, translation.y, translation.z),
Rotation = new GLTF.Math.Quaternion(rotation.x, rotation.y, rotation.z, rotation.w),
Scale = new GLTF.Math.Vector3(scale.x, scale.y, scale.z),
};
if (bone.childCount > 0)
{
// Debug.logger.Log(bone.childCount);
node.Children = new List <NodeId>();
for (var i = 0; i < bone.childCount; i++)
{
node.Children.Add(
new NodeId
{
Id = allBones.IndexOf(bone.GetChild(i)),
Root = _root
}
);
}
}
_root.Nodes.Add(node);
}
if (skin.rootBone != null)
{
gltfSKIN.Skeleton = new NodeId
{
Id = allBones.IndexOf(skin.rootBone),
Root = _root
};
}
foreach (var bone in skin.bones)
{
gltfSKIN.Joints.Add(
new NodeId
{
Id = allBones.IndexOf(bone),
Root = _root
}
);
}
mesh.Primitives.AddRange(ExportPrimitive(skin.sharedMesh, skin.sharedMaterials, gltfSKIN));
}
else if (this._target.GetComponent <UnityEngine.ParticleSystemRenderer>() != null)
{
var renderer = this._target.GetComponent <UnityEngine.ParticleSystemRenderer>();
mesh.Primitives.AddRange(ExportPrimitive(renderer.mesh, renderer.sharedMaterials));
}
else
{
var filter = this._target.GetComponent <UnityEngine.MeshFilter>();
var renderer = this._target.GetComponent <UnityEngine.MeshRenderer>();
mesh.Primitives.AddRange(ExportPrimitive(filter.sharedMesh, renderer.sharedMaterials));
}
var id = new MeshId
{
Id = _root.Meshes.Count,
Root = _root
};
_root.Meshes.Add(mesh);
}
private List<Dictionary<string, AccessorId>> GenerateMorphTargets(UnityEngine.Mesh mesh, GLTF.Schema.Mesh m)
{
if (mesh.blendShapeCount <= 0)
{
return new List<Dictionary<string, AccessorId>>();
}
if (_mesh2targets.ContainsKey(mesh))
{
return _mesh2targets[mesh];
}
var targets = new List<Dictionary<string, AccessorId>>();
var targetNames = new JArray();
m.Extras = new JProperty("extras", new JObject(new JProperty("targetNames", targetNames)));
int stride = 0;
for (int i = 0; i < mesh.blendShapeCount; i += 1)
{
stride += 3 * 4;
if (mesh.normals.Length > 0)
{
stride += 3 * 4;
}
if (mesh.tangents.Length > 0)
{
stride += 4 * 4;
}
}
var bufferView = CreateByteBufferView(mesh.name + "-targets", stride * mesh.vertexCount, stride);
Vector3[] vertices = new Vector3[mesh.vertexCount];
Vector3[] normals = new Vector3[mesh.normals.Length];
Vector3[] tangents = new Vector3[mesh.tangents.Length];
int offset = 0;
m.Weights = new List<double>();
for (int i = 0; i < mesh.blendShapeCount; i += 1)
{
var name = mesh.GetBlendShapeName(i);
var target = new Dictionary<string, AccessorId>();
targets.Add(target);
targetNames.Add(name);
m.Weights.Add(mesh.GetBlendShapeFrameWeight(i, 0));
mesh.GetBlendShapeFrameVertices(i, 0, vertices, normals, tangents);
target.Add("POSITION", PackAttrToBuffer(bufferView, vertices, offset, (Vector3[] data, int index) => { return Utils.ConvertVector3LeftToRightHandedness(ref data[index]); }));
target["POSITION"].Value.Name += "-" + name + "-POSITION";
offset += 3 * 4;
if (mesh.normals.Length > 0)
{
target.Add("NORMAL", PackAttrToBuffer(bufferView, normals, offset, (Vector3[] data, int index) => { return Utils.ConvertVector3LeftToRightHandedness(ref data[index]); }));
target["NORMAL"].Value.Name += "-" + name + "-NORMAL";
offset += 3 * 4;
}
if (mesh.tangents.Length > 0)
{
target.Add("TANGENT", PackAttrToBuffer(bufferView, tangents, offset, (Vector3[] data, int index) => { return Utils.ConvertVector3LeftToRightHandedness(ref data[index]); }));
target["TANGENT"].Value.Name += "-" + name + "-TANGENT";
offset += 4 * 3;
}
}
_mesh2targets.Add(mesh, targets);
return targets;
}
public virtual void Import(EditorImporter importer, UnityEngine.Mesh mesh, GLTF.Schema.Mesh gltfMesh, Extension extension)
{
}
public static void Import(string extensionName, EditorImporter importer, UnityEngine.Mesh mesh, GLTF.Schema.Mesh gltfMesh, Extension extension)
{
if (Name2Extensions.ContainsKey(extensionName))
{
Name2Extensions[extensionName].Import(importer, mesh, gltfMesh, extension);
}
}