<?

$md5str = md5($_GET['f'].'-'.$_GET['w'].'-'.$_GET['h']);
if(!isset($_GET['nocache']) && file_exists('images/cache/'.$md5str.'.png')){
  header('Location: /images/cache/'.$md5str.'.png');exit();
}


$filename = 'images/'.$_GET['f'];
list($width, $height, $imgtype, $attr) = getimagesize($filename);

switch($imgtype){
  case IMAGETYPE_GIF;
   $newimg = imagecreatefromgif($filename);
   break;
  case IMAGETYPE_JPEG;
   $newimg = imagecreatefromjpeg($filename);
   break;
  case IMAGETYPE_PNG;
   $newimg = imagecreatefrompng ($filename);
   break;
 default:
    exit;
}
   $th_width = isset($_GET['w']) ? $_GET['w'] : 120 ;
   $th_height = isset($_GET['h']) ? $_GET['h'] :90;
$resizedimg = imagecreatetruecolor( $th_width ,$th_height);
//imagecopyresampled($resizedimg,$newimg,0,0,0,0,120,90,$width,$height);

   $forcefill = true;
     $a = $th_width/$th_height;
     $b = $width/$height;

     if(($a > $b)^$forcefill)
     {
         $src_rect_width  = $a * $height;
         $src_rect_height = $height;
         if(!$forcefill)
         {
           $src_rect_width = $width;
           $th_width = $th_height/$height*$width;
         }
     }
     else
     {
         $src_rect_height = $width/$a;
         $src_rect_width  = $width;
         if(!$forcefill)
         {
           $src_rect_height = $height;
           $th_height = $th_width/$width*$height;
         }
     }
     /*
     $sql = "SELECT `POIX`,`POIY` FROM `Media` WHERE `file` = '{$_GET['f']}' AND `POIX` > 0 AND `POIY` > 0";
     $qry = mysql_query($sql);
     if(mysql_num_rows($qry)){
        list($poix,$poiy) = mysql_fetch_row($qry);
        $x = $poix/$width;
        $y = $poiy/$height;
        $src_rect_xoffset = ($width - $src_rect_width)*$x*intval($forcefill);
        $src_rect_yoffset = ($height - $src_rect_height)*$y*intval($forcefill);
     }else{*/
        $src_rect_xoffset = ($width - $src_rect_width)/2*intval($forcefill);
        $src_rect_yoffset = ($height - $src_rect_height)/2*intval($forcefill);
     //}
     
     imagecopyresampled($resizedimg, $newimg, 0, 0, $src_rect_xoffset, $src_rect_yoffset, $th_width, $th_height, $src_rect_width, $src_rect_height);
     imagedestroy($newimg);
     
     if(isset($_GET['nocache'])){
        header('content-type: image/png');
        imagepng($resizedimg);
     }else{
        imagepng($resizedimg,'images/cache/'.$md5str.'.png');
        header('Location: /images/cache/'.$md5str.'.png');
     }
?>