Bug #51593 [Com]: imageellipse() draws incorrectly

Edit report at https://bugs.php.net/bug.php?id=51593&edit=1 ID: 51593 Comment by: gimli2 at gmail dot com Reported by: ellipsebugs at yahoo dot com Summary: imageellipse() draws incorrectly Status: Open Type: Bug Package: GD related Operating System: Windows XP PHP Version: 5.3.2 Block user comment: N Private report: N New Comment: The same problem is in PHP 5.5.23 x64 on win7 x64. with GD Version: bundled (2.1.0 compatible)) Previous Comments: ------------------------------------------------------------------------ [2015-01-22 13:16:20] luke at woollysheep dot net same problem into linux slackware but the size must be > than 2200 PHP version: 5.6.4 GD version: bundled (2.1.0 compatible) ------------------------------------------------------------------------ [2012-06-07 11:40:55] merlijn at bntnederland dot nl Running into the same problem on a freeBSD Server/5.3.10/gd2.0.34. Stupid thing is that on my developmentserver, which has the same software specs, the problem doesn't exist. When I moved my script to the production server it popped up. As far I can tell the only difference is that my production server runs an 64bit OS and my development server an 32bit version of freeBSD (both run 8.2). ------------------------------------------------------------------------ [2011-02-24 20:03:34] blyon at blyon dot com I'm having the same problem with large ellipses on FreeBSD, I am trying to do ellipses > 1000 pixels and they look like bumpy squares: PHP 5.2.6 with Suhosin-Patch 0.9.6.2 (cli) (built: Oct 21 2008 18:22:59) Copyright (c) 1997-2008 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies ------------------------------------------------------------------------ [2010-04-18 23:17:51] ellipsebugs at yahoo dot com Description: ------------ On a system of Window XP, PHP/5.3.0 and GD 2.0.34 the imageellipse() function fails to draw a circle properly when dealing with large dimensions. Calling the function for a circle with radius over 1032 pixels (an ellipse with equal width and height over 2064 pixels) creates a deformed circle with bumps in four directions. Increasing the dimensions makes things worse. On a system of Linux, PHP/5.2.13 and GD 2.0.34 the issue does not appear. Test script: --------------- <?php header ("Content-type: image/png"); $im = imagecreatetruecolor(2200, 2200) or die("Cannot Initialize new GD image stream"); imagefill($im, 0, 0, imagecolorallocate($im, 255, 255, 255)); imageellipse($im, 1100, 1100, 2064, 2064, imagecolorallocate($im, 0, 0, 255)); imagepng($im); imagedestroy($im); ?> Expected result: ---------------- A relatively smooth circle is drawn. Actual result: -------------- The resulting circle has irregular bumps in it. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=51593&edit=1