Someone

	$bx1 = $x;
	$by1 = $y;
	$bx2 = $bx1 * ($x * cos(225));
	$by2 = $by1 + ($x * sin(225));
	$bx3 = $bx2 + ($y * cos(315));
	$by3 = $by2 + ($y * sin(315));
	$bx4 = $bx3 + ($x * cos(45));
	$by4 = $by3 + ($x * sin(45));
	$bvalues = array(
	$bx1,  $by1,
	$bx2,  $by2,
	$bx3,  $by3,
	$bx4,  $by4,
	);