imagefilledpolygon() with a pattern

[albert]

Good morning,

I would like to draw a polygon and then fill it with a pattern instead
of a solid colour.

Is there any functions available which will accomplish what I am
attempting or do I have to write my own function?

Thanks in advance

Albert

[albert]

By pure chance I stumbled across the imagesettile() method. This can be
used to fill a polygon (or any other shape) with a specific pattern.

So I wrote the following function to create a crosshash fill:

function imageCrossHashFill($image, $polygonPoints, $colour) {
$r = hexdec(substr($colour, 0, 2));
$g = hexdec(substr($colour, 2, 2));
$b = hexdec(substr($colour, 4, 2));
 
$crossHash = imagecreate(20, 20);
$bg2 = imagecolorallocate($crossHash, 255, 255, 255);
$red2 = imagecolorallocate($crossHash, $r, $g, $b);
imageline($crossHash, 0, 0, 20, 20, $red2);
imageline($crossHash, 0, 10, 10, 20, $red2);
imageline($crossHash, 10, 0, 20, 10, $red2);
imageline($crossHash, 20, 0, 0, 20, $red2);
imageline($crossHash, 10, 0, 0, 10, $red2);
imageline($crossHash, 20, 10, 10, 20, $red2);
imagecolortransparent($crossHash, $bg2);
 
imagesettile($image, $crossHash);
imagefilledpolygon($image, $polygonPoints, count($polygonPoints) / 2,
IMG_COLOR_TILED);
 
imagedestroy($crossHash);
}
 

You can fill the polygon with anything by changing the $crossHash
image.

Have a good day