Path: utzoo!news-server.csri.toronto.edu!rutgers!sun-barr!apple!motcsd!lance
From: lance@motcsd.csd.mot.com (lance.norskog)
Newsgroups: comp.windows.x
Subject: Re: 3d rotation in room coords?
Message-ID: <3240@motcsd.csd.mot.com>
Date: 13 Mar 91 03:01:21 GMT
References: <9103050342.AA20065@maui.coral.com> <13709@life.ai.mit.edu> <13781@life.ai.mit.edu> <1991Mar7.055600.4149@ux1.cso.uiuc.edu> <9314@exodus.Eng.Sun.COM> <9103072008.AA03949@enuxha.eas.asu.edu> <13825@life.ai.mit.edu> <1233@attc.UUCP>
Organization: Motorola CSD, Cupertino CA
Lines: 8

To view an object in a modelling application, I would rather move along
a hyperboloid (paraboloid? football!) whose foci are the endpoints of
the longest axis in the model.  This is often the camera path used in
SF movies where they spent lots of money on a big spaceship model and
really want to show it off.  I've heard of Bresenham ellipse-drawers;
it might be possible to cook up a fast football-walking 3D DDA.

Lance Norskog