Jaap wrote:
> Christoph Hormann <chr### [at] gmxde> wrote:
> 
>>I am pretty sure collisions are calculated in all those cases although i
>>can't completely rule out an internal problem at the moment.  To
>>actually tell you why you think they don't occur i would need to see the
>>complete scene.
> 
> 
> http://jwstolk.afreehost.net/bolts_mechsim.pov.gz
> 

Sorry for the late reply.

You code does not even run with the current version (immediate 
instability, did not check with 1.1 though).  Your models are simply way 
too stiff (extremely small masses combined with high stiffness 
connections).  You can make it run by changing this but will never get 
reasonable movements with this topology.

So the way to go is create reasonable bolt shapes (with a reasonable 
mass distribution) and make them soft enough (start with very soft and 
increase stiffness until the look good enough, you will have to decrease 
time stepping at the same time).  Start with one bolt and see if it 
collides well with the environment.  Then add a second one and turn on 
mass-mass and mass-face collisions, you probably do not even need the 
con-con collisions.

Christoph

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