Hi, some short notes, I think it is better for you to create one more engine, like RotationEngine, but it should accept 2 axises and 2 angular velocities. Then you create 2 quaternions, multiplicate them and move SubscribedBodies.
Should work, probably. Sorry, no time to check it. ______________________________ Anton Gladkyy 2010/7/16 Michael Jensen <[email protected]> > :-) > > from your responses, I gather that my scheme might work :-) > > question is, would it be efficient, in terms of time of computation > required, and would it be beautiful, in terms of code. for the latter, at > least, I believe not. > > the beautiful thing to do would be (I think) to put in some code such that > the axis of rotation and the zero point of rotation can be defined not only > absolutely, as they seem to be now, but as being alligned with some existing > vertex (line between two points), or an existing point, respectively. that > would make the whole thing automatic, meaning that no extra code would have > to be added by the user to manually update the position. > > for example, perhaps a new rotation engine could be coded that would accept > as input a named point and line in the simulation, so that variation of the > position and orientation of this named point and line would be taken into > account. in this way, 'rotations' of arbitrary complexity could be modeled, > one extra line of code simulating the resulting action of one rotating > motor. or linear motor, or any other actuator. > > does such functionality yet exist? I suspect not? it depends on how many > ways the vector3r can be defined. > > -mike > > > --- On *Fri, 7/16/10, Václav Šmilauer <[email protected]>* wrote: > > > From: Václav Šmilauer <[email protected]> > Subject: Re: [Yade-users] hello? -help with a spinning bucket! > To: [email protected] > Received: Friday, July 16, 2010, 4:23 AM > > > > If you want to launch only one iteration, O.run(1) is better, O.iter > > will give you only the number of current iteration, in python : > > > https://www.yade-dem.org/sphinx/yade.wrapper.html#yade.wrapper.Omega.iter > > Watch out, though, O.run(1) might return _before_ the iteration finishes > (it launches thecomputation in background)! O.step() will wait. Or use > O.run(1,True). > > > > > _______________________________________________ > Mailing list: > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > Post to : > [email protected]<http://mc/[email protected]> > Unsubscribe : > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > More help : https://help.launchpad.net/ListHelp > > > > _______________________________________________ > Mailing list: > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > Post to : [email protected] > Unsubscribe : > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > More help : https://help.launchpad.net/ListHelp > >
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