Edit report at http://bugs.php.net/bug.php?id=51593&edit=1
ID: 51593
Comment by: blyon at blyon 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:
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
Previous Comments:
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[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.
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Edit this bug report at http://bugs.php.net/bug.php?id=51593&edit=1
