public function To2D(eye:Point3D):Point
{
    var result:Point = new Point(0, 0);
    result.x = ((Eye.z * (x - Eye.x)) / (Eye.z + z) + Eye.x);
    result.y = ((Eye.z * (y - Eye.y)) / (Eye.z + z) + Eye.y);
    return result;
}