[ODE] Tri-collider page on wiki

[Eric Cha]

I recently wrote up a routine to calculate the inertia tensor for an
arbitrary tri-mesh.  I haven't tried to integrate it with
ODE/Tri-collider, but I would be happy to generalize the code a little
bit and donate it to ODE...

Eric

> -----Original Message-----
> From: ode-admin@q12.org [mailto:ode-admin@q12.org] On Behalf 
> Of Tony Peguero
> Sent: Wednesday, June 26, 2002 7:17 PM
> To: ode@q12.org
> Subject: RE: [ODE] Tri-collider page on wiki
> 
> 
> Yeah, I'm hanging out for movable trilists as well. 
> Calculating the inertia tensor separately doesn't scare me too much :)
> 
> 
> -----Original Message-----
> From: ode-admin@q12.org [mailto:ode-admin@q12.org]On Behalf 
> Of David McClurg
> Sent: Thursday, 27 June 2002 11:48 a.m.
> To: ode@q12.org
> Subject: RE: [ODE] Tri-collider page on wiki
> 
> 
> Thanks Norman. This is very helpful.
> 
> Under "Limitations of the Triangle Collider" I see--
> #  Current tri-collider code might not yet support moving 
> tri-meshes (the transformation matrix for the tri-mesh must 
> be identity, see mailing list) # Once moving tri-meshes are 
> supported, you still need external library to compute 
> arbitrary inertia tensor for moveable tri-meshes
> 
> >>> I searched the mailing list archive and didn't find 
> anything about 
> >>> this.
> <<<
> 
> What I'm interested in is a tri-list that responds to 
> dGeomSetPosition() and dGeomSetRotation().  My tri-list geom 
> is linked to a scene graph and I'd like to follow the scene 
> graph node as it moves/rotates.
> 
> I don't need inertia or a body yet.  Just teleporting through 
> space would be fine.  Moving platforms you can jump between 
> in a game is an example where you don't need inertia badly.
> 
> Of course, I can do this myself by transforming the vertex 
> list but I was surprised to find that tri-list geoms didn't 
> respond to dGeomSetPosition(). This approach also requires 
> two vertex lists so errors don't build up!!
> 
> -----Original Message-----
> From: nlin@nlin.net [mailto:nlin@nlin.net]
> Sent: Wednesday, 26 June 2002 12:40 AM
> To: Erwin de Vries
> Cc: ode@q12.org
> Subject: [ODE] Tri-collider page on wiki
> 
> 
> I've put up a brief wiki page explaining how I got the 
> tri-collider to compile and link, along with the problems I 
> had (float/double issues). Feel free to correct/expand on this.
> 
http://q12.org/cgi-bin/wiki.pl?TriangleCollider

-Norman
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