<? 

//IMAGE STUFF
$imagewidth = 400; //overall width of image 
$imageheight = 150; //overall height of image
$background_r = 0; //red value of background (0-255)
$background_g = 0; //green value of background (0-255)
$background_b = 0; //blue value of background (0-255)

//ROWS OF COLORED BOXES 
$height = 10; //height of colored boxes 
$offset = 1; //spacing of things (1 or higher) 
$minboxwidthhalf = 1; //mininum box width, each randomly determined
$maxboxwidthhalf = 10; //max box width, each randomly determined
$randomheight = 0;
$minheighthalf = 3;
$maxheighthalf = 25;

// this gets an even number
$minheight = 2 * $minheighthalf;
$maxheight = 2 * $maxheighthalf;
$minboxwidth = 2 * $minboxwidthhalf ; 
$maxboxwidth = 2 * $maxboxwidthhalf ; 

// BOX ITERATIONS 
$break = 130; //may need increasing if image width is high
$breaksub = 25;

//COLOR CONTROL
$monotone = 1; //1 to turn on, 0 to turn off
$tone = 180; //pick a tone to start with(0-255)
$tonedepth = 40; //the variance of the color, low equals subtle (0-255)
$colorshiftamt = 80; //vertical shift
$startx = 0; 
$starty = ($imageheight/2) - (($breaksub * 2)/2); 
$image = imageCreate($imagewidth,$imageheight);//creates image

$defaultbackground = ImageColorAllocate ($image, $background_r, $background_g, $background_b); //creates bground image

$color4 = ImageColorAllocate ($image, 250, 250, 250);
$black = ImageColorAllocate ($image, 0, 0, 0);

$background= 0; 
$xbgr = 0;
$ybgr =0;
while($background<=10000){
if ($background==10000){break;}
imagesetpixel ($image, $xbgr, $ybgr, $color4);
$xbgr = $xbgr + 4; 
if ($xbgr >= $imagewidth){$ybgr=$ybgr + 4;} 
if ($xbgr >= $imagewidth){$xbgr = 0;} 
$background++;
}

$i = 0;
while($i<=$break){
if ($i==$break){break;}
$r = rand(1, 255);
$g = rand(1, 255);
$b = rand(1, 255);
if ($monotone == 1){ 
$r = $tone - (rand(-$tonedepth,$tonedepth));
$g = $tone - (rand(-$tonedepth,$tonedepth));
$b = $tone - (rand(-$tonedepth,$tonedepth));}
$color1 = ImageColorAllocate ($image, $r, $g, $b);
$colorshiftr = rand(-$colorshiftamt, $colorshiftamt);
$colorshiftg = rand(-$colorshiftamt, $colorshiftamt);
$colorshiftb = rand(-$colorshiftamt, $colorshiftamt);
$color2 = ImageColorAllocate ($image, $r+$colorshiftr, $g+$colorshiftg, $b+$colorshiftb);
$width = rand($minboxwidth,$maxboxwidth); 
if ($randomheight == 1){$height = (rand($minheighthalf, $maxheighthalf)*2);}
$endx = $startx+$width; 
$endy = $starty+$height;


$subloop = 0;
$inc = 0;
$down = 2;
$down2 =1;
while($subloop<=$breaksub){
if ($subloop==$breaksub){break;}
imageline ( $image, $startx + $inc, $starty + $down, $startx + $width + $inc, $starty + $down, $color1);
imageline ( $image, $startx + $inc, $starty + $down2, $startx + $width + $inc, $starty + $down2, $color2);
imageline ( $image, $startx, $starty + 1, $startx, $starty + (25*2), $black);
$down = $down + 2;
$down2 =$down2 +  2;
$subloop++;
}
$i++; 
$startx = $startx + $width + $offset;
//$starty = $starty + rand(-1,1);
} 


//OUTPUT JPEG
header('Content-Type: image/png');
ImagePNG($image);
?>