static Mesh FromGltf(GltfSerialization.GltfStorage storage, GltfMesh x, GltfPrimitive primitive, bool isShared)
{
var mesh = new Mesh((TopologyType)primitive.mode)
{
VertexBuffer = primitive.attributes.FromGltf(storage)
};
if (isShared)
{
// create joined index buffer
mesh.IndexBuffer = storage.IndexBufferFromGltf(x.primitives.Select(y => y.indices).ToArray());
}
else
{
mesh.IndexBuffer = storage.AccessorFromGltf(primitive.indices);
}
if (primitive.targets != null)
{
for (int i = 0; i < primitive.targets.Count; ++i)
{
var gltfTarget = primitive.targets[i];
string targetName = null;
if (primitive.extras != null &&
primitive.extras.targetNames != null &&
i < primitive.extras.targetNames.Count
)
{
targetName = primitive.extras.targetNames[i];
}
var target = new MorphTarget(targetName)
{
VertexBuffer = gltfTarget.FromGltf(storage)
};
// validate count
foreach (var kv in target.VertexBuffer)
{
if (kv.Value.Count != mesh.VertexBuffer.Count)
{
throw new Exception();
}
}
mesh.MorphTargets.Add(target);
}
}
return(mesh);
}
/// <summary>
/// IndexBuffer毎に異なるVertexBufferを参照する
///
/// VertexBuffer
/// +--------+ +--------+ +--------+
/// |0 | |1 | |2 |
/// +--------+ +--------+ +--------+
/// A A A
/// | | |
/// +---------+--------+--------+
/// | submesh0|submesh1|submesh2|
/// +---------+--------+--------+
/// IndexBuffer
/// </summary>
public static Mesh FromGltf(this GltfPrimitive primitive, GltfSerialization.GltfStorage storage, GltfMesh x)
{
return(FromGltf(storage, x, primitive, false));
}
