On Tue, 10 Sep 2002 20:13:54 +0200, "Tim Nikias" <tim### [at] gmxde>
wrote:

>Anyone got any good (and free) spring algorithms with
>good explanations so that I know what to do to make them
>"softer" / less rigid?

From the list I mentioned, Xavier Provot has some good and not too
hard explanations on using a combination of implicit and explicit
integration to increase the integration step size. Also, "Large Steps
in Cloth Simulation" by Baraff & Witkin is a definite must-read.

Glad if I can help even a little. I've been wanting to do a more or
less complete physics simulation engine for years now, and so far have
not found the time. Seeing as how particle systems, cloth simulations,
deformable bodies, IK systems and what not spring up every week or so
really gladdens my heart - at least *someone* will do it :)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

Post a reply to this message

Peter Popov <pet### [at] vipbg> wrote in 
news:qgqtnug28ghejleb9ic71utant7up84pn3@4ax.com:

> Glad if I can help even a little. I've been wanting to do a more or
> less complete physics simulation engine for years now, and so far have
> not found the time. Seeing as how particle systems, cloth simulations,
> deformable bodies, IK systems and what not spring up every week or so
> really gladdens my heart - at least *someone* will do it :)

Made a tilt, I saved some links on physics simulation engines, in case I 
wanted to program a game someday :-)

HyperMatter: 
http://www.hypermatter.demon.co.uk/html/HyperMatter/hypermatter.htm
Seem to be available in DLL form only, so of little use for POV-Ray, unless 
writing external programs generating POV-Ray scenes.

Particle System API: http://www.cs.unc.edu/~davemc/Particle/
Comes with source. Perhaps you can find some ideas.

Open Dynamics Engine: http://www.q12.org/ode/ode.html
It has quite a good reputation in game industry. Comes with sources.

OPCODE (Optimized Collision Detection): 
http://www.codercorner.com/Opcode.htm
Probably out of topic, but it may be useful to somebody :-)

I hope it helps.

-- 
--=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=--
Philippe Lhoste (Paris -- France)
Professional programmer and amateur artist
http://jove.prohosting.com/~philho/

Post a reply to this message