From: owner-3dui@hitl.washington.edu on behalf of Wolfgang Stuerzlinger
[wolfgang@cs.yorku.ca]
Sent: Wednesday, August 16, 2000 5:32 PM
To: Jeff Pierce
Cc: 3d-ui@hitl.washington.edu
Subject: Re: Far clipping planes

Jeff Pierce wrote:
> 
> Here's a quick question for the list.  In the 3D toolkit you use, whatever
> it may be, where do you typically set the far clipping plane distance?  Or,
> if you never change it, what is the default distance?
> 
> Jeff

Quick answer:
I have found that the diagonal of the bounding box for the "universe" times
a fudge factor (1.05) works well. It guarantees that I will always see
everything there is while maximizing z-buffer resolution.

Wolfgang

P.S: If you really want to maximize z-buffer resolution do view frustum
culling before rendering and determine the distance to the far point
of the (bounding box of the) farthest object.
--
Wolfgang Stuerzlinger     Dept. of Computer Science; York University
CCB 256; 4700 Keele Street; Toronto, Ontario, M3J 1P3; Canada
wolfgang@cs.yorku.ca                http://www.cs.yorku.ca/~wolfgang