[ODE] slider trouble

[Nate W]

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On Thu, 31 Oct 2002, Russ Smith wrote:

> nate, can you verify the fix?

Unfortunately, no... I've attached another test that bounces things off
the ground a bit differently, and you can watch two blocks bounce skyward
and then gradually spin up to an explosion.

How's this for an alternate approach: apply the linear force created by
the joint stop at each body's center of mass, but apply it in the
direction of the other body's center of mass, rather than along the slider
axis (project the force vector along the direction of the other body's
center of mass).  Would that also cancel out the torque effect, without
adding torques to the bodies explicitly?

Also, could this problem be related to the problem where a single flying
spinning body also gains angular momentum?  I actually saw the
slider-limit acceleration problem months ago, but I mistook it for the
explicit integration problem described in the FAQ in 11.12.

-- 

Nate Waddoups
Redmond WA USA
http://www.natew.com


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