[ODE] handling large forces

[Megan Fox]

This is in the FAQ.  Floating point precision falls apart the further
you get from 0.  So scale your forces and your masses to be closer to
the range 0->1.

-Megan Fox

On Tue, 7 Dec 2004 11:16:26 -0400, Graham Fyffe <gfyffe at gmail.com> wrote:
> Hi everyone.  I'm having a really difficult time with the
> dBodyAddForce type functions and large forces.  If I had large (100000
> N) random forces to a 2000 kg body, the simulator explodes.  I assume
> this is some kind of numerical instability?  The problem I'm having
> is, how can I manage my forces to keep things under wraps?  There
> seems to be no clear range of acceptable forces... a solution that
> clamps forces to a maximum value seems highly unstable, since it also
> seems dependent on the current velocity, and the state of other bodies
> that might interact with it through joints.
> 
> Has anyone had success in forcing dBodyAddForce to be stable?  Thanks!
> 
> - Graham Fyffe
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