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[Jan Stránský <question215485@xxxxxxxxxxxxxxxxxxxxx>]

Question #215485 on Yade changed:
https://answers.launchpad.net/yade/+question/215485

Jan Stránský proposed the following answer:
Hi Riccardo,

you can choose if you prescribe the veocity directly to the bodies or use
TranslationEngine. If you use it for many particles, I would personally
prefere TranslationEngine as it does all looping in C++, but basicly it
doesn't matter much :-)

concerning TranslationEngine, "velocity" parameter may be both positive and
negative. The actual velocity vector applied to bodies is simply
velocity*translationAxis, so your function can be simplified to

def setTransEngineVelocity():
    v = math.sin(O.time)
    transEngine.velocity = v

and it should work..

Jan


2012/11/28 Riccardo carta <question215485@xxxxxxxxxxxxxxxxxxxxx>

> Question #215485 on Yade changed:
> https://answers.launchpad.net/yade/+question/215485
>
> Riccardo carta posted a new comment:
> Thanks Bruno, I will take into account your advice also.
> What I wrote above seems to work fine by now
>
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