Path: chuka.playstation.co.uk!tjs From: tjs@cs.monash.edu.au (Toby Sargeant) Newsgroups: scee.yaroze.programming.3d_graphics Subject: Re: 3D splines Date: 29 May 1998 00:33:29 GMT Organization: PlayStation Net Yaroze (SCEE) Lines: 17 Message-ID: References: <6kk82p$lev14@chuka.playstation.co.uk> <356DDE25.73352BC@netmagic.net> NNTP-Posting-Host: indy16.cs.monash.edu.au X-Newsreader: slrn (0.9.5.1 UNIX) On Thu, 28 May 1998 14:59:01 -0700, Elliott Lee wrote: >Got a calculus book? I'd use a quadratic spline, but I forget what >the formula is to do derivatives with only integers... > >- e! quadratic splines don't have very nice properties, such as continuous second derivative. cubic splines do, however. another book that's probably worthwhile is Foley and VanDamme - from all accounts, it's the one graphics text that you really need. you really want a spline with which you can control the first derivative at the control points, as well as one which you can generate constant velocity points on. this is more reason to go for a graphics textbook, because mathematicians aren't interested in such things. toby.