<?php
define("IMAGE_FLIP_HORIZONTAL", 1);
define("IMAGE_FLIP_VERTICAL", 2);
define("IMAGE_FLIP_BOTH", 3);
function ImageFlip($imgsrc, $type)
{
$width = imagesx($imgsrc);
$height = imagesy($imgsrc);
$imgdest = imagecreatetruecolor($width, $height);
switch( $type )
{
// mirror wzgl. osi
case IMAGE_FLIP_HORIZONTAL:
for( $y=0 ; $y<$height ; $y++ )
imagecopy($imgdest, $imgsrc, 0, $height-$y-1, 0, $y, $width, 1);
break;
case IMAGE_FLIP_VERTICAL:
for( $x=0 ; $x<$width ; $x++ )
imagecopy($imgdest, $imgsrc, $width-$x-1, 0, $x, 0, 1, $height);
break;
case IMAGE_FLIP_BOTH:
for( $x=0 ; $x<$width ; $x++ )
imagecopy($imgdest, $imgsrc, $width-$x-1, 0, $x, 0, 1, $height);
$rowBuffer = imagecreatetruecolor($width, 1);
for( $y=0 ; $y<($height/2) ; $y++ )
{
imagecopy($rowBuffer, $imgdest , 0, 0, 0, $height-$y-1, $width, 1);
imagecopy($imgdest , $imgdest , 0, $height-$y-1, 0, $y, $width, 1);
imagecopy($imgdest , $rowBuffer, 0, $y, 0, 0, $width, 1);
}
imagedestroy( $rowBuffer );
break;
}
return( $imgdest );
}
?>
