#34336 [Opn->Asn]: imagerotate destroys transparency information
| From: | sniper@php.net | Date: | Thu, 01 Sep 2005 21:34:35 +0000 |
| Subject: | #34336 [Opn->Asn]: imagerotate destroys transparency information | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-84327@lists.php.net to get a copy of this message | ||
ID: 34336
Updated by: sniper@php.net
Reported By: techtonik@php.net
-Status: Open
+Status: Assigned
Bug Type: GD related
-Operating System: Windows 2000
+Operating System: *
-PHP Version: 4.4.0
+PHP Version: 5CVS, 4CVS (2005-08-31)
-Assigned To:
+Assigned To: pajoye
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
