hi there,
i got the same problem - finding the contact point...dealing with complex
geometry...
> ...For the first pass, have a look at the PickTool in the utility
> classes that Sun has available.
o.k. please tell me who to gain the contact point of two objects using the
PickTool...cause i have no idea how this should work..
(think this is good for terrain-following and viewport things, but not for
objects...)
> > Is it possible that Java 3D is able to notice the collisions but is
> > not able
> > to return the points of contact ?
>
> Please have a read of
>
> http://www.j3d.org/implementation/collision.html
>
> For a lot of background information on how Java 3D deals with it's
> internal collision implementation.
i have re-readed the article, but i didn't satisfy my need..,because there
it is going interesting, it is stopping..
".., this is very expensive operation in CPU cycles so you would probably be
much better of dropping one notch in realism stakes for much more
interactive world."
> > Is it possible to get from Java 3D such informations or is it
> > necessary to create a new method to calculate them ?
>
> You will need to do this yourself. Java3D does not provide object to
> object collision detection.
>
> > It would be a very onerous job !
summing up, the i have no problem using the WakeUpOnCollisionXXX.. cause
with USE_GEOMETRY it works quite fine and if there is an intersection i move
back to the sate before - or an interpolated between - so intersecting isn't
noticeable for the viewer...
but there is still my problem implementing a realistic physik-system
(including torque,...), where the contact point is need for computing the
new angularMomentum,...
so i would be very glad, if someone has a solution.
greetings
Michael Nischt
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