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[Chiara Modenese <question166809@xxxxxxxxxxxxxxxxxxxxx>]

Question #166809 on Yade changed:
https://answers.launchpad.net/yade/+question/166809

    Status: Open => Answered

Chiara Modenese proposed the following answer:
We added some time ago a useful feature which would solve your problem. If
you add a label to the engine you want to eliminate from the simulation
(e.g. PyRunner(iterPeriod=10,command='calm()',label='MyEngine')), then you
can say:
MyEngine.dead=True
It practically means that since next iteration that engine will not be
active any longer.

HTH,
Chiara

On 3 August 2011 12:41, Christian Jakob <
question166809@xxxxxxxxxxxxxxxxxxxxx> wrote:

> New question #166809 on Yade:
> https://answers.launchpad.net/yade/+question/166809
>
> Hi,
>
> For generation process of my model I create some spheres randomly. Then the
> model has to calm, because there are some overlaps. So I wrote a small
> function:
>
> def calm():
>        for ii in range(0,sum_spheres+1):
>                O.bodies[ii].state.vel=Vector3(0,0,0)
>
> I can add this function to O.engines with the PyRunner command:
>
> O.engines=O.engines+[PyRunner(iterPeriod=10,command='calm()')]
> O.run(1000,True)
>
> My question is:
>
> How can I remove this function? I need it only on the first few steps in my
> model.
> I tried...
>
> O.engines=O.engines-[PyRunner(iterPeriod=10,command='calm()')]
>
> ...but it doesnt work.
>
> Christian.
>
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