#45552 [NEW]: Full circle drawn instead of arc with very small angle

From: Date: Fri, 18 Jul 2008 09:27:07 +0000
Subject: #45552 [NEW]: Full circle drawn instead of arc with very small angle
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-126942@lists.php.net to get a copy of this message 
From:             kore@php.net
Operating system: Linux 2.6.25-gentoo-r6
PHP version:      5.2.6
PHP Bug Type:     GD related
Bug description:  Full circle drawn instead of arc with very small angle

Description:
------------
Instead of a very small arc slice, a full circle is drawn when calling
imagefilledarc with very small angles.

Reproduce code:
---------------
<?php

$image = imagecreatetruecolor( 200, 200 );

$bgColor = imagecolorallocatealpha( $image, 255, 255, 255, 127 );
imagealphablending( $image, true );
imagesavealpha( $image, true );
imagefill( $image, 1, 1, $bgColor );

$drawColor = imagecolorallocate( $image, 0, 0, 200 );
imagefilledarc( $image, 100, 100, 100, 100, 30, 30.1, $drawColor,
IMG_ARC_PIE );

imagepng( $image, 'imagefilledarc_test.png' );
?>

Expected result:
----------------
An image with a very small arc slice.

Actual result:
--------------
A full circle, like: http://k023.de/imagefilledarc_test.png

-- 
Edit bug report at http://bugs.php.net/?id=45552&edit=1
-- 
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45552&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45552&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45552&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=45552&r=fixedcvs
Fixed in release:             http://bugs.php.net/fix.php?id=45552&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=45552&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=45552&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=45552&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=45552&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=45552&r=notwrong
Not enough info:              http://bugs.php.net/fix.php?id=45552&r=notenoughinfo
Submitted twice:              http://bugs.php.net/fix.php?id=45552&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=45552&r=globals
PHP 4 support discontinued:   http://bugs.php.net/fix.php?id=45552&r=php4
Daylight Savings:             http://bugs.php.net/fix.php?id=45552&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=45552&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=45552&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=45552&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=45552&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=45552&r=mysqlcfg

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