[ODE] Triangle-box collider contribution

[Alen Ladavac]

It's safe. I gave the source snippet to asko with the specific intention to
have it integrated into ODE. If some kind of written permission is needed,
let me know.

--
Alen Ladavac, Lead Programmer, Croteam


P.S. If you want some other collider, I can provide snippets to any of our
colliders if someone is willing to integrate (they use our core library to
operate vectors and matrices, so it's not directly pluggable). We have all
combinations of sphere, cylinder, capsule, box and triangle, except for
triangle-triangle. They are all based on separating axis theorem and all
work completely analytically (i.e. no numerical root finding). I am
interested in this both because I'd like to help ODE expand and improve, and
because I believe that an algorithm is better tested if it is open than
closed.


----- Original Message -----
From: "Adam D. Moss" <adam at gimp.org>
To: "ode" <ODE at q12.org>
Sent: Sunday, April 04, 2004 09:04
Subject: Re: [ODE] Triangle-box collider contribution


> So, I think the conclusion was that this looks good.  However,
> you say that this is based on code from the Serious Engine 2.
> So before I commit this to CVS, who do I contact at Croateam to
> verify that it's safe to distribute/use this under ODE's license?
> Thanks,
> --Adam
>
> asko wrote:
> >
> > Oops. Fixed. I hope :)
> >
> > http://www.cad-creations.net/asko/TriBox/TriBox.zip
> >
> >
> >     ----- Original Message -----
> >     *From:* John Miles <mailto:jmiles at pop.net>
> >     *To:* asko <mailto:asko at jetti.org> ; ode at q12.org
<mailto:ode at q12.org>
> >     *Sent:* Wednesday, February 25, 2004 8:38 PM
> >     *Subject:* RE: [ODE] Triangle-box collider contribution
> >
> >     Thanks!  I'm extremely interested in any improvements to this code,
> >     and will be happy to help test and debug any submissions.
> >
> >     In this case, it looks like your code is trying to generate too many
> >     contact points.  When I compile it into my ODE build and run either
> >     test_moving_trimesh.exe or my own application, it tries to pass
> >     index values to the SAFECONTACT macro that equal or exceed (Index &
> >     0xffff) in line 916.  This condition fails the assert in line 114 of
> >     collision_trimesh_internal.h.
> >
> >     It appears that you never check the low word of iFlags to determine
> >     the maximum number of contacts to generate.
> >
> >     -- jm
> >
> >         -----Original Message-----
> >         *From:* ode-bounces at q12.org [mailto:ode-bounces at q12.org]*On
> >         Behalf Of *asko
> >         *Sent:* Wednesday, February 25, 2004 9:38 AM
> >         *To:* ode at q12.org
> >         *Subject:* [ODE] Triangle-box collider contribution
> >
> >         Hello everyone,
> >
> >         I've had the honour to port a piece of code, a mesh-box
> >         collider from the as of yet unreleased Serious Engine 2 to ODE.
> >          From what I've experienced it seems to be slightly more
> >         stabile, so it's worth a try if you have a lot of box-triangle
> >         action going on :)
> >
> >         I have uploaded the files to a zip:
> >         http://www.cad-creations.net/asko/TriBox/TriBox.zip
> >
> >
> >         Would be nice if someone with CVS access could add it to the
> >         contributions section.
> >
> >     _______________________________________________
> >     ODE mailing list
> >     ODE at q12.org
> >     http://q12.org/mailman/listinfo/ode
> >
> >
> > ------------------------------------------------------------------------
> >
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>
>
> --
> Adam D. Moss   . ,,^^   adam at gimp.org   http://www.foxbox.org/   co:3
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