<?

  // three variables are being sent from flash using loadVariables:
  // $paintColor - rgb integer
  // $data - a list of x0,y0,x1,y1,x2,y2...
  // $brushSize  - must apply bounds

  if(!isset($brushSize)) $brushSize = 10;
  else{
	if(!is_int($brushSize)) $brushSize = (int)$brushSize;
	if($brushSize<0) $brushSize = 1;
	else if($brushSize>500) $brushSize = 500;
  }

  header("Content-type: plain/text");

  // load current image from store.jpg
  $im = imageCreateFromJpeg("store.jpg");

  // prepare brush using given size and color
  $brush = imagecreate($brushSize,$brushSize);
  $white = imagecolorallocate($brush,255,255,255);
  imagecolortransparent ($brush, $white);
  if($paintColor==65280)
    $c = imagecolorallocate($brush,0,255,0); //green
  else if($paintColor==16711680)
    $c = imagecolorallocate($brush,255,0,0); //red
  else if($paintColor==16776960)
    $c = imagecolorallocate($brush,255,255,0); //yellow
  else 
    $c = imagecolorallocate($brush,0,0,255); //blue
  imageFilledEllipse($brush,$brushSize/2,$brushSize/2,$brushSize,$brushSize,$c);
  imagesetbrush ($im, $brush);
  
  // process data and draw line using brush
  $coord = split(",",$data);
  for($i=0;$i<count($coord)-4;$i+=2){
    imageLine($im,$coord[$i],$coord[$i+1],$coord[$i+2],$coord[$i+3],IMG_COLOR_BRUSHED);
  }
  // write $im to the file again
  imageJpeg($im,"store.jpg");
  print("loaded=true");

?>