[ODE] cylinder woes
rileylark at gmail.com
Fri Dec 1 19:06:43 MST 2006
First of all, I am using the latest update from the SVN server. I am
attempting to collide cylinders against boxes in my project, and
hitting a very frustrating problem that I've been hacking at for the
last several hours. The cylinder test apps packaged with ode work
perfectly, and yet when I try to use them in my project, I get odd
behavior and eventually crash on an assert on line 333 of
The odd behavior: The cylinder seems to be longer than it should.
That is, the edge of the cylinder extends approximately 50% again past
the edge of my graphical representation.
The crash: the crash only happens when a flat end of the cylinder is
about to land more-or-less flat on the box. When the cylinder lands
mostly with the curved side along the box, it bounces around for a
while and looks completely normal, and then comes to a rest, maybe
rolling a bit. When the cylinder lands mostly on end, the app crashes
before the collision ever occurs. You can see a screenshot of the
crash at http://files.larkolicio.us/modball/images/cylinder_error.jpg
I am at a loss. I am fairly sure that I am doing everything I should
need to initialize the cylinder. When I try replacing the
dCreateCylinder call with a dCreateSphere call, everything works
perfectly (with a sphere), so I think I am not forgetting anything.
I know this is an extremely vague problem but my hope is that someone
has some idea about where I can look next for the error. Again, the
identical ode binaries used with the test_cyl projects lead to 100%
correct-looking results, even when I set up the examples to land the
cylinders on their ends.
Thanks for any ideas~
PS: please let me know if this mailing list is only for development of
ODE and not for help getting it working. I don't want to misuse it.
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