ID: 34336
Updated by: pajoye@php.net
Reported By: techtonik@php.net
-Status: Assigned
+Status: Feedback
Bug Type: Feature/Change Request
Operating System: *
PHP Version: 5CVS, 4CVS (2005-08-31)
Assigned To: pajoye
New Comment:
Please try using this CVS snapshot:
http://snaps.php.net/php5-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5-win32-latest.zip
Try the newly added 4th argument:
imagerotate($rsr, $angle, $bg_color, $keeptransparency);
However, note that this is interpolated colors in the destination
images (rotated), meaning that if the original image has some
antialiased artifacts with the bgd color, you will notice them in the
rotated image (in your case, a white border), not much can be done
against that.
--Pierre
Previous Comments:
------------------------------------------------------------------------
[2005-09-01 21:41:26] techtonik@php.net
Description:
------------
Imagerotate doesn't preserve transparency information.
Next image was used in example below:
http://img24.imageshack.us/img24/228/spritepaw8alpha2os.png
Reproduce code:
---------------
<?php
$sprName = "sprite_paw8_alpha.png";
$spr = imagecreatefrompng($sprName); //create sprite object
//get sprite's transparent color
$sprTransparent = imagecolortransparent($spr);
//sprite rotation
$rotate = 15;
//rotate sprite, ?keeping transparent pixels
$spr = imagerotate($spr, $rotate, $sprTransparent);
header("Content-type: image/gif");
imagegif($spr);
imagedestroy($spr);
?>
Expected result:
----------------
Rotated image with transparent background.
Actual result:
--------------
Rotated image with black background.
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=34336&edit=1