From: owner-3dui@hitl.washington.edu on behalf of Jeff Pierce [jpierce@cs.cmu.edu] Sent: Thursday, August 17, 2000 1:52 PM To: 3d-ui@hitl.washington.edu Subject: Re: Far clipping planes I'm actually hoping for multiple answers here, folks, so please take 2 minutes and check where your 3D authoring tool puts the far clipping plane. On our end, Alice puts the far clipping plane at 256 meters by default. Jeff At 05:31 PM 8/16/00, Wolfgang Stuerzlinger wrote: >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