note 91779 added to function.imagickdraw-line

From: Date: Thu, 25 Jun 2009 09:36:00 +0000
Subject: note 91779 added to function.imagickdraw-line
Groups: php.notes 
Request: Send a blank email to php-notes+get-157464@lists.php.net to get a copy of this message
There is a small imprecision in the previous user note. You have to think of your canvas as 2D matrix, starting with x/y = 0/0. So the calculation of the midpoint is wrong. It must be = ($width - 1) / 2 and *not* just $width / 2. Imagine a 3x3 image, the midpoint is obviously 1/1. So you should prefer odd width/height values, if you operate with a midpoint (chart pie, ..) and an odd stroke width (f.e. "1"). Otherwise a line with a stroke width of "1" ends in a 2-pixel, alpha 0.5 line. ---- Server IP: 217.160.72.57 Probable Submitter: 89.244.130.51 ---- Manual Page -- http://www.php.net/manual/en/function.imagickdraw-line.php Edit -- https://master.php.net/note/edit/91779 Del: integrated -- https://master.php.net/note/delete/91779/integrated Del: useless -- https://master.php.net/note/delete/91779/useless Del: bad code -- https://master.php.net/note/delete/91779/bad+code Del: spam -- https://master.php.net/note/delete/91779/spam Del: non-english -- https://master.php.net/note/delete/91779/non-english Del: in docs -- https://master.php.net/note/delete/91779/in+docs Del: other reasons-- https://master.php.net/note/delete/91779 Reject -- https://master.php.net/note/reject/91779 Search -- https://master.php.net/manage/user-notes.php

« previous php.notes (#157464) next »