[ODE] quadratic planes
benoit.forestier at irsn.fr
Thu Sep 20 01:21:18 MST 2007
It looks like a good solution to my problem.
Jon Watte (ODE) a écrit :
> If you want parametric solutions (rather than a mesh approximation),
> your best bet is probably to calculate the intersections yourself, and
> generate contact joints based on your calculations. Sphere contained in
> cylinder is fairly simple to solve analytically -- but if you built an
> "inverted cylinder" geom, you'd have to handle rays, boxes, trimeshes,
> and a few other kinds of geoms, too.
> There is nothing in ODE that forces you to use dCollide. You can create
> collision joints from data that you calculate yourself.
> / h+
> Benoit Forestier wrote:
> > Hello,
> > firstly, i would like to apologize for my poor english.
> > I would like to simulate the motion (and collisions) of spheres
> within an
> > empty cylinder.
> > from what i saw in the user guide, there is no geom type i can use to
> > perform that kind of calculation.
> > has anybody heard about any quadratic plane geom class (i.e. a plane
> > equation of the form ax^2 + by^2 + cz^2 + dxy + exz + fyz + gx + hy
> + iz + j
> > = 0)?
> > should i build my own class?
> > is there any other way to model a cylindrical vessel?
> > Thanks
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