[ODE] test problems?

[Kenneth Holmlund]

As far as I understand Havok doesn't use
primitives for computing e.g. collision overlaps
(at least not in Reactor according to my 3dsmax dealer).
What difference does this make for stability, performance
and scaling between using e.g. a stack of polygon cubes
and a stack of mathematical cubes?


/Kenneth

Russ Smith wrote:


> you could try:
> * measure the step speed for N body chain and N body tree. DynaMechs is
>   O(N), the rest are O(N^3) (except i don't know about Darwin2K).
> * implement highly contacting systems and see how they behave.
>   an example is baraff's part feeder (i'm not sure which paper i saw
>   this in).
> * implement stiff systems, to test the integrator. examples are systems
>   with strong springs or lots of damping.
> 
> note that comparing packages is much more meaningful when it is done
> on real problems, not toy or acedemic problems. so i would recommend
> that you try to build a (very) simple version of your project in
> each package. also note that Mathengine and ODE are roughly the same
> feature-wise, except that Mathengine has more collision primitives,
> more joints, and costs more.
> 
> would you be able to report your results (or a link to them) to this
> mailing list? i would love to know which areas ODE is deficient in.
> 
> russ.
> 
> --
> Russell Smith
> http://www.q12.org
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> 
> 
> 



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