/home/edulekha/studygroup.edulekha.com/ow_libraries/wideimage/Operation/Rotate.php
<?php
/**
* @author Gasper Kozak
* @copyright 2007-2011
This file is part of WideImage.
WideImage is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
WideImage is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with WideImage; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* @package Internal/Operations
**/
/**
* Rotate operation class
*
* @package Internal/Operations
*/
class WideImage_Operation_Rotate
{
/**
* 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();
$image = $image->asTrueColor();
if ($bgColor === null)
{
$bgColor = $image->getTransparentColor();
if ($bgColor == -1)
{
$bgColor = $image->allocateColorAlpha(255, 255, 255, 127);
imagecolortransparent($image->getHandle(), $bgColor);
}
}
return new WideImage_TrueColorImage(imagerotate($image->getHandle(), $angle, $bgColor, $ignoreTransparent));
}
}