Path: chuka.playstation.co.uk!news
From: Craig Graham <c_graham@hinge.mistral.co.uk>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: Deforming models
Date: Sun, 22 Aug 1999 16:19:24 +0000
Organization: PlayStation Net Yaroze (SCEE)
Lines: 24
Message-ID: <935338764.2012884687@news.playstation.co.uk>
References: <7phug2$htr18@chuka.playstation.co.uk>
NNTP-Posting-Host: d4-s41-43-telehouse.mistral.co.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
X-NewsReader: kexpress 0.8.0

"Mark Theyer" <theyergfx@ozemail.com.au> wrote:
>Hi
>
>I wish to deform a TMD model by changing its 3D vertex points every
>frame... does this have any impact when rendering? Or, in other words,
>do the 3D points get accessed while rendering? Should I leave them
>alone by using double buffered models (i.e: two copies)?

Or keep two copies of just the vertex segment and swap a single pointer
(pretty much zero overhead, uses less memory).

>Or, is it OK to change the points after calling DrawOT?

You can change the points after sorting the object...check out
the library code that accompanies RsdANIM for an example of
doing this...

>Thanks
>
>Mark

Craig.
Animated TMDs R Us - the followup to RsdANIM is coming along
nicely (but unless you use Linux/KDE you'll never see it).