Path: utzoo!attcan!uunet!convex!killer!ames!ncar!boulder!stan!garya
From: garya@stan.com (Gary Aitken)
Newsgroups: comp.windows.x
Subject: Re: X11 fenceposts
Message-ID: <280@stan.com>
Date: 17 Nov 88 21:48:15 GMT
References: <3595@pt.cs.cmu.edu>
Organization: Solbourne Computer Inc., Longmont, Co.
Lines: 15

In article <3595@pt.cs.cmu.edu>, egc@h.gp.cs.cmu.edu (eddie caplan) writes:
> under X11R2 on a (black and white) microvax 2:
> 
> XDrawRectangle(display, drawable, gc, x, y, w, h) draws a rectangle defined
> by the coordinates (x,y)  (x+w,y)  (x+w,y+h)  (x,y+h)
> 
> -- 

We looked at this and rationalized the draw rectangle as drawing a rectangle
with a zero width line, centered in the middle of the actual pixels.  The
rectangle (stuff inside the 0 width line) is then of the desired size.
Don't know if that's a proper interpretation or not, though.

Gary Aitken
ncar!boulder!stan!garya