[ODE] Convex collision testing
Rodrigo Hernandez
kwizatz at aeongames.com
Thu Sep 28 12:48:37 MST 2006
tritzerhansen-scifi at yahoo.com wrote:
>Hello,
>
>I haven't used ODE before, and I have some questions about Convex
>collision testing.
>
>First of all, I've noticed that ODE doesn't handle collision detection
>between Convex geoms and either Box or Trimesh geoms. Are there any
>plans to provide that kind of support in ODE in the near future?
>
>
>
I am working on it right now, I cannot give you dates since I am not
exactly idle and available to work on it
exclusivelly.
>Second, in the meantime, I assume that I'll need to resort to using
>Trimesh geoms with data that could actually be handled as Convex geoms
>since the data set that I'm using has both convex and non-convex
>geometry. So, I was curious about the performance penalty.
>Specifically, assuming that I wanted to test collisions between objects
>that are truly convex, would it be noticeably slower to do collision
>detection using Trimesh vs. Trimesh rather than Convex vs. Convex in
>those cases?
>
>
>
I really dont have the answer since I dont know exactly how trimeshes
work internaly (though I asume some
sort of per triangle collision check must be done somewhere), and convex
collision code is not mature enought to do performance
comparison tests other than convex-sphere and trimesh-sphere.
I would expect, however, the convex-convex code to do at the very least
slightly better than trimesh-trimesh.
>Thanks,
>Christopher
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