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