<?
	require('security.php');

	if (($_SESSION['PARTS'] == '') | ($_SESSION['IMAGE'] == ''))
	{
		exit;
	}

	$source         = imagecreatefromjpeg($_SESSION['IMAGE']);
	$intWidth       = $_SESSION['WIDTH'];
	$intHeight      = $_SESSION['HEIGHT'];
	$intPieceWidth  = round($intWidth  / sqrt($_SESSION['PARTS']));
	$intPieceHeight = round($intHeight / sqrt($_SESSION['PARTS']));

	$intX = $_GET['PART'] * $intPieceWidth;
	$intY = 0;

	while (($intX) >= $intWidth)
	{
		$intX = $intX - $intWidth;
		$intY = $intY + $intPieceHeight;
	}

	$dest = imagecreatetruecolor($intPieceWidth, $intPieceHeight);

	imagecopyresized($dest, $source, 0, 0, $intX, $intY, $intWidth, $intHeight, $intWidth, $intHeight);

	// this is supposed to make it color, but doesn't
	//for($i=0; $i<256; $i++)
	//	imagecolorallocate($dest, $i, $i, $i);

	imagejpeg($dest);
?>