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[Christian Jakob <1026073@xxxxxxxxxxxxxxxxxx>]

Thank you for your help.

I think I did it, but there is a compilation warning:

/home/me/YADE/trunk/pkg/dem/Shop.cpp: In static member function ‘static Real Shop::calm(const boost::shared_ptr<Scene>&, int)’:                                                                 
/home/me/YADE/trunk/pkg/dem/Shop.cpp:838: warning: no return statement in function returning non-void

Shall I say "return 0;" at the end of the function?

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https://bugs.launchpad.net/bugs/1026073

Title:
  "calm function" inside source code

Status in Yet Another Dynamic Engine:
  New

Bug description:
  Hi,

  I need a "calm function" for my generation process. In python code it
  looks like this:

  def calm():
  	for b in O.bodies:
  		if isinstance(b.shape,Sphere) or b.isClump:
  			b.state.vel		= Vector3(0,0,0)
  			b.state.angVel	= Vector3(0,0,0)
  			b.state.angMom	= Vector3(0,0,0)

  I detected, that it is very slow in the case it is called by PyRunner
  for e.g. every 2 steps.

  O.engines=O.engines+[PyRunner(iterPeriod=2,command='calm()')]

  Would it be faster, when it is implemented inside C++ source code?
  If yes, where can I implement it (which file)?

  Regards,

  Christian

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