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Re: [Question #646460]: translation of a rotating cylinder

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Jan Stránský <question646460@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 07 Jul 2017 11:43:39 -0000
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Question #646460 on Yade changed:
https://answers.launchpad.net/yade/+question/646460

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Guilhem,
thanks for the script. Yes, labels in this case are not taken into account. Currently only labels of "first order" engines plus special cases (like bound functors of collider or Ig2, Ip2 and Law2 functors of InteractionLoop) are projected to python, see [1,2]. 
Adding CombinedKinematicEngine should not be a problem, but it is not currently available.

A workaround:
####
transEngine = TranslationEngine(ids=roul,translationAxis=(1,0,0),velocity=10)
rotEngine = RotationEngine(ids=roul,angularVelocity=0.,rotationAxis=(0,1,0))
O.engines=O.engines[:4]+[rotEngine+transEngine]+O.engines[4:]
####

cheers
Jan

[1] https://github.com/yade/trunk/blob/master/py/wrapper/yadeWrapper.cpp#L542
[2] https://github.com/yade/trunk/blob/master/py/wrapper/yadeWrapper.cpp#L714

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