public static Model3D CreateModel(ModelData modelData)
        {
            Model3D model = new Model3D();

             foreach (var mesh in modelData.Meshes)
            model.AddMesh(CreateModelMesh(mesh));

             return model;
        }
 public RawSceneObject(ModelData model, Matrix worldMatrix)
 {
     Model = model;
      WorldMatrix = worldMatrix;
 }