[ODE] Approximating the shape of a body with several geoms

[Mattias Fagerlund]

You should check out the boxstack demo, the composite objects solve your 
problem.

cheers,
m

-----Original Message-----
From: Matthias Baas <baas@ira.uka.de>
To: ode@q12.org
Date: Wed, 05 Feb 2003 20:19:45 +0100
Subject: [ODE] Approximating the shape of a body with several geoms

> Hi,
> 
> I have a question about how to group several geom objects together to 
> approximate the actual shape of a body. Somehow I feel this is a FAQ,
> but I 
> couldn't find it anywhere.
> So what I want to do is as follows, I want to simulate a body that has
> a 
> different shape than one of the ODE geom objects, that's why I'd like
> to 
> approximate its shape with a collection of several geoms that shall act
> as 
> one single geom. Then I'd like to attach the collection to a body so
> that 
> the whole collection is used for collision detection.
> The question is, where is that "group geom" that holds the individual
> geoms 
> together? The geometry group class is deprecated and replaced by spaces
> which are geoms now, however they are non-placeable geoms, so I can't 
> attach a space to a body. And there's no other geom that can be used as
> a 
> container.
> 
> Well, so far I have my geoms, each with a transform geom, but what do I
> do 
> now? Can I attach several geoms to one body? (Well, of course I tried,
> but 
> got a crash, that's why I'm afraid this is not the way to go and why I 
> posted this mail).
> 
> Would it be possible to make spaces placeable, too? The position and 
> orientation of all geoms inside a space would then be given relative to
> the 
> space (like a transform geom that can handle several geoms). Then I
> could 
> just place my geoms into a space and attach that space to a body.
> 
> - Matthias -
> 
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