[ODE] TriMesh collisions

[Megan Fox]

How many contacts are you generating?

The number contacts needed for solid-sold vs solid-trimesh are quite
different.  solid-solid you can get away with as few as 3 or so, but
for solid-trimesh, you're going to need somewhere around 24, at least.

The last time this thread went around (which was fairly recently,
check the archives to see other possible solutions to your problem), I
believe upping the max contacts ended up solving most of the problems.


-Megan

> Hi,
> 
> I'm new to ODE. I need to work with TriMesh geoms but my preliminary tests
> show very strange behavior. For example, my last test was a box geom falling
> down to a box-shaped TriMesh geom (the simplest shape I could think of for a
> TriMesh). Depending on the settings (gravity, timestep, etc.), the falling
> box bounces wildly against the TriMesh, rests on the TriMesh and eventually
> sinks through it or even ignores it completely.
> 
> I guess I could get around using primitives (boxes, spheres, etc.) instead
> of TriMeshes for my moving objects, but using only primitives for my static
> environment would limit my scenery too much.
> 
> Here's the question: Do you know if TriMesh-related code in ODE is in a
> usable stage? Or should I avoid TriMeshes at all? By the way, I'm using ODE
> 0.5 but I can get the latest code from CVS if it helps.
> 
> Thanks in advance for any help!
> 
> --Arturo Colorado
> 
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