[ODE] Static objects start rotating?

[James Frye]

Gravity is (0.0, 0.0, -9.81), and I put a ground plane at Z = 0.  A
realistic earth-gravity
environment, IOW.

James

ode-bounces at ode.org wrote on 08/11/2007 01:31:08 AM:

> What did you set for the WorldGravity Parameter?
>
> Regards,
> Tobias
>
>
> Am 10.08.2007 um 23:45 schrieb James Frye:
>
> >
> > I'm sure this must be a really dumb question, but I can't find an
> > answer.
> > (Apropos of which, it would
> > be nice if there was some way to search the mailing list archives...)
> >
> > I create a very simple simulation, just a box sitting on the ground
> > (Obj is
> > a struct that holds all
> > info about a body...)
> >
> >   Obj->body = dBodyCreate (world);
> >   dBodySetPosition (Obj->body, 0.5, 2.0, 0.25);
> >
> >   dMassSetBox (&m, 1.0, 0.5, 2.0, 0.5);
> >   dBodySetMass (Obj->body, &m);
> >
> >   Obj->geom = dCreateBox (space, 0.5, 2.0, 0.5);
> >   dGeomSetBody (Obj->geoms, Obj->body);
> >
> > I run this with a basic simulation loop as copied from the
> > examples.  The box should just sit there
> > doing nothing, but it begins a slow rotation around the Z axis.
> > Why?  What am I doing wrong?
> >
> > Thanks,
> > James