# Bottom right corner of the screen, at z = 0
fun bottom_right: Point3d[Float] do return new Point3d[Float](position.x + width, position.y - height, 0.0)
# Bottom right corner of the screen, at z = 0
fun bottom_right: Point3d[Float] do return new Point3d[Float](position.x + width, position.y - height, 0.0)