Set a single engine in a CombinedCinematicEngine to dead = True

Hi Felix,

probably nobody needed this feature before, so it was not there :-) I have
changed the code such that the CombinedKinematicEngine will not call its
subengines iff their dead attribute is set to true. Could you please update
to the newest version and try it?
cheers
Jan

2013/10/16 Felix Niewienda <email address hidden>

> New question #237437 on Yade:
> https://answers.launchpad.net/yade/+question/237437
>
> Hi,
>
> i am trying to combine multiple HarmonicRotationEngines using
> CombinedCinematicEngine. To get the cinematic i want i need to start the
> engines at different times.
>
> So i tried to initiate the second engine in comb with dead = True. It will
> be set to False after a while.
>
> CombinedKinematicEngine(comb=(HarmonicRotationEngine(A = 0.05, f = freq,
> rotationAxis = [1.0, 0.0, 0.0], rotateAroundZero = True, zeroPoint = [0.0,
> 0.0, -1.5]),
> HarmonicRotationEngine(A = 0.05, f = freq, rotationAxis = [1.0,0.0,0.0],
> dead = True, rotateAroundZero = True, zeroPoint = [0.0,0.0,-1.5]),
> ), ids = zylinder, label = "Combined"),
>
> In the example above both engines work from begin on. The problem seems to
> be that is isn't possible to use dead on a single engine in comb.
>
> Is there a possiblity to make it work this way or are there any other
> solutions? (I already tried to set A = 0 and change that after a while, but
> that doesn't change the phaseing of the engine.)
>
> --
> You received this question notification because you are a member of
> yade-users, which is an answer contact for Yade.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-users
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~yade-users
> More help : https://help.launchpad.net/ListHelp
>

Hi Jan,
thank you for your help. Saidly the phaseing doesen't start at zero when i set dead to false. It seems to be the same behaveour as if i set A=0. I guess I have to wait until the engine is in the correct phaseing again to enable it.

Hi Felix,

now it becomes the issue of HarmonicRotationEngine itself, not
CombinedKinematicEngine :-) you can open a new question or report a bug
cheers
Jan

2013/10/18 Felix Niewienda <email address hidden>

> Question #237437 on Yade changed:
> https://answers.launchpad.net/yade/+question/237437
>
> Felix Niewienda posted a new comment:
> Hi Jan,
> thank you for your help. Saidly the phaseing doesen't start at zero when i
> set dead to false. It seems to be the same behaveour as if i set A=0. I
> guess I have to wait until the engine is in the correct phaseing again to
> enable it.
>
> --
> You received this question notification because you are a member of
> yade-users, which is an answer contact for Yade.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-users
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~yade-users
> More help : https://help.launchpad.net/ListHelp
>

2013/10/18 Felix Niewienda <email address hidden>:
> thank you for your help. Saidly the phaseing doesen't start at zero when i set dead to false. It seems to be the same behaveour as if i set A=0. I guess I have to wait until the engine is in the correct phaseing again to enable it.

I do not quite understand, what behavior you are awaiting, but maybe
fi-parameter [1] is what you need?

[1] https://www.yade-dem.org/doc/yade.wrapper.html#yade.wrapper.HarmonicRotationEngine.fi

Yes with fi it should be possible to do what I want. I just have to take the correct fi for the time when I enable the engine. I just thaught there might be a less complicate way to do it. Thank you.