[ODE] dBodyGetForce returns zero force

Gazi Alankus alanic at gmail.com
Thu Jun 28 06:52:55 MST 2007

I think that only returns the forces that you applied to the body. I
had to modify my ODE source and add a dBodyGetPrevForce() to get the
force that was used in the last iteration.


On 28/06/07, PKS123 <prashant.coder at gmail.com> wrote:
> Hi
> I am using the dBodyGetForce() function to find out the force on a body
> which is in free fall.
> The function is returning a zero vector.
> I noticed from the ODE Documentation that the force accumulators are set to
> zero after each time step. So, I put the function both before and after the
> dWorldQuickStep() function but the value was zero in both cases.
> The Body has a mass of 100, and so the minimum force that I should be
> getting is m*g ie. 100*9.8
> But I get a zero force. Could anyone suggest what might be wrong.
> Thanks and Regards
> PKS123
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