Path: utzoo!attcan!uunet!mcsun!ukc!reading!cf-cm!ralph
From: ralph@computing-maths.cardiff.ac.uk (Ralph Martin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: turning on a pixel
Message-ID: <843@cf-cm.UUCP>
Date: 24 Aug 89 08:50:00 GMT
References: <6294@hubcap.clemson.edu> <863@eutrc3.urc.tue.nl>
Organization: University of Wales College of Cardiff, Cardiff, WALES, UK.
Lines: 14
In-reply-to: rcbaem@eutrc3.urc.tue.nl's message of 22 Aug 89 16:22:38 GMT

Its not me thats crazy, its everyone else!

If you look at Inside Mac, it clearly says that coordinates refer to
points at the corner of pixels, not the pixels themselves. Thus, it
seems to me that any code like moveto(x,y) lineto(x,y) should draw a
line of zero length, ie nothing at all. It seems to me that all of you
have it wrong when you do this (including you guys at Apple, who
actually apparently make such code not draw a line of zero length, but
a single pixel).  I've always used (the equivalent of) moveto(x,y),
lineto(x+1,y+1) to set a given pixel.

So, hit me with the flamethrower! Who's right, and who's wrong?!

As I said, its the rest of the world thats crazy......