Hi Johannes,
Johannes Brunen wrote:
> Hi,
>
> I'm looking for a convenient way for line picking.
Good question!
> Is there something
> like a polytope intersector in OpenSG?
Not a general Polytope, but if you really just want to do picking the
Frustum should be enough.
> Is it possible to use the standard OpenGL picking mechanism?
In theory yes, but implementing that is probably going to be a bit
tricky. I assume you have geometries that are just lines that you want
to pick. I'd create a frustum from the 4 rays through the corners of the
pixel (or pixels, to allow some imprecision) and just iterate the lines
and do an intersection with the frustum. Not trivial, but not difficult
either.
Hope it helps
Dirk
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