[ODE] mass of collisions - imagine a brush

[Remi Ricard]

Hi,

> B) this is how i would do it:
> - have all bristles as single geoms, even worse, subdivide the bristles into several parts connected by universal joints.
> - the bristles are connected to the head by a ball joint; preferably a joint that does allow rotation "to the sides", but not "twisting rotation". I have posted the "free6" joint to the list (that is capable of this), but the email has not been approved by a moderator.
>   
I  did not see your code about the free6 joint but the Universal joint 
should do the job for the rotations without twisting.



Remi