I'm rendering a PNG image from another PNG image with imagecopyresampled(). Now i want some parts of the image to be flipped horizontal, so i have tried this:
//horizontal
$src_x = $width - 1;
$src_width = -$width;
imagecopyresampled(
$imgdest, $imgsrc, 0, 0, $src_x, $src_y , $width, $height
, $src_width, $src_height
);
Taken from a user-comment from the PHP Manual.
It does not work in my case (where I copy a lot of pieces from the original image to the new), instead it copies another piece of the image. Does anyone has a solution to this?
Okay so many years after I found the answer myself, so I just wanted to let anybody else know.
It was pretty simple, example:
Instead of:
imagecopy($output, $input, 8, 20, 4, 20, 4, 12)
I would use:
imagecopyresampled($output, $input, 8, 20, (8 - 1), 20, 4, 12, 0 - 4, 12);
Which would flip the part of the image horizontal.