#28506 [NEW]: imagearc() doesn't like negative value of the s parameter

From: tony2001 at phpclub dot net Operating system: Linux 2.4.23 PHP version: 5CVS-2004-05-24 (dev) PHP Bug Type: GD related Bug description: imagearc() doesn't like negative value of the s parameter Description: ------------ imagearc() draws broken arc, when using negative value as s parameter. It could be GDlib bug, at least I found a couple of words in GD man: http://www.boutell.com/gd/manual2.0.23.html about unspecified bugs in gdImageArc(). Also, there can be simple workaround: just don't accept negative values, reduce them to zero. Reproduce code: --------------- // result image is here: http://tony2001.phpclub.net/temp/imagearc.png // // create a 200*200 image $img = imagecreate(200, 200); // allocate some colors $white = imagecolorallocate($img, 255, 255, 255); $black = imagecolorallocate($img, 0, 50, 200); // draw a white circle imagearc($img, 100, 100, 150, 150, -1, 200, $black); // output image in the browser header("Content-type: image/png"); imagepng($img); // free memory imagedestroy($img); Expected result: ---------------- a flat arc Actual result: -------------- a broken arc with some crosslines -- Edit bug report at http://bugs.php.net/?id=28506&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28506&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28506&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=28506&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=28506&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=28506&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=28506&r=needscript Try newer version: http://bugs.php.net/fix.php?id=28506&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=28506&r=support Expected behavior: http://bugs.php.net/fix.php?id=28506&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=28506&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=28506&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=28506&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28506&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=28506&r=dst IIS Stability: http://bugs.php.net/fix.php?id=28506&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=28506&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=28506&r=float