public void Update(GameObject parent, TimeSpan time, float sparam)
{
Effect.SParam = sparam;
var world = Attachment.Transform * parent.GetTransform();
Effect.Update(time, world.Transform(Vector3.Zero), world);
}
public void Update(GameObject parent, double time, float sparam)
{
Effect.SParam = sparam;
var world = (Attachment?.Transform ?? Matrix4x4.Identity) * parent.WorldTransform;
Effect.Update(time, Vector3.Transform(Vector3.Zero, world), world);
}