/**
* Returns rotated image
*
* @param WideImage_Image $image
* @param numeric $angle
* @param int $bgColor
* @param bool $ignoreTransparent
* @return WideImage_Image
*/
function execute($image, $angle, $bgColor, $ignoreTransparent)
{
$angle = -floatval($angle);
if ($angle < 0) {
$angle = 360 + $angle;
}
$angle = $angle % 360;
if ($angle == 0) {
return $image->copy();
}
if ($bgColor === null) {
if ($image->isTransparent()) {
$bgColor = $image->getTransparentColor();
} else {
$tc = array('red' => 255, 'green' => 255, 'blue' => 255, 'alpha' => 127);
if ($image->isTrueColor()) {
$bgColor = $image->getExactColorAlpha($tc);
if ($bgColor == -1) {
$bgColor = $image->allocateColorAlpha($tc);
}
} else {
$bgColor = $image->getExactColor($tc);
if ($bgColor == -1) {
$bgColor = $image->allocateColor($tc);
}
}
}
}
return new WideImage_TrueColorImage(imagerotate($image->getHandle(), $angle, $bgColor, $ignoreTransparent));
}
