public static void SetAttribute(this GltfPrimitive prim, string semantic, int accessorIndex)
{
switch (semantic)
{
case "POSITION": prim.attributes.POSITION = accessorIndex; break;
case "NORMAL": prim.attributes.NORMAL = accessorIndex; break;
case "TANGENT": prim.attributes.TANGENT = accessorIndex; break;
case "TEXCOORD_0": prim.attributes.TEXCOORD_0 = accessorIndex; break;
case "COLOR_0": prim.attributes.COLOR_0 = accessorIndex; break;
case "JOINTS_0": prim.attributes.JOINTS_0 = accessorIndex; break;
case "WEIGHTS_0": prim.attributes.WEIGHTS_0 = accessorIndex; break;
default: throw new KeyNotFoundException($"unknown key: {semantic}");
}
}
public static bool HasSameVertexBuffer(this GltfPrimitive lhs, GltfPrimitive rhs)
{
return(lhs.attributes == rhs.attributes);
}
public static bool HasVertexColor(this GltfPrimitive p)
{
return(p.attributes != null && p.attributes.COLOR_0 != -1);
}