Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:18762
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Message-ID: <200509101634.j8AGYVqe024681@box2.fiddy8.com>
To: "'Greg Trounson'" <gregtr@es.co.nz>, <internals@lists.php.net>
Date: Sat, 10 Sep 2005 12:34:32 -0400
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
In-Reply-To: <432271EE.7030509@es.co.nz>
Thread-Index: AcW1ykelrYvhDUjpQmOMzZDZYyFGjwAWjqqQ
Subject: RE: [PHP-DEV] ImageAntialias
From: mike@fiddy8.com ("Mike Robinson")
References: <432271EE.7030509@es.co.nz>

Greg Trounson wrote:
> Actually I propose a new method for antialiasing:
> 
> bool imageantialias ( resource im, bool on, int MODE )
> 
> where MODE is one of:
> 
> AA_TRADITIONAL - Perform antialiasing the same way it's done 
> now - that is to use a different antialiasing function for 
> each primitive, most of which haven't yet been implemented.
> 
> AA_SCALE - Draw the image to an internal buffer at 2x the 
> requested size, using regular non-antialiased primitives, and 
> downscale the result to the requested size with bilinear 
> filtering.  This produces nice antialiased images with very 
> little duplication of code across primitives.  Line thickness 
> may need to be doubled to give the right effect.
> 
> AA_TEXT - Draw/downsample the image as above, but omit text 
> objects until after the image has been downsampled.  This 
> allows for clearer but non-antialiased text.

Ugh. Painful short-term remedies...

I understand the frustration, but given the excellent progress made
lately on GD, both by Boutell-folk and the internal GD maintainer(s),
IMHO I think it'd be better to wait until GD handles anti-aliasing
properly.

Best,

Mike Robinson