Question #690051 on Yade changed: https://answers.launchpad.net/yade/+question/690051
Jan Stránský posted a new comment: Hello, you can do any motion composing translation and rotation. In the MWE below, the point is to adjust translation(translationAxis and velocity) and rotation (zeroPoint, rotationAxis and angularVelocity) every iteration: ### ids = O.bodies.append(( sphere((0, 0, 0),1), sphere((0,-1, 0),1), sphere((0,+1, 0),1), sphere((0, 0,-1),1), sphere((0, 0,+1),1), )) trans = TranslationEngine(ids=ids) # translation part rot = RotationEngine(ids=ids,rotateAroundZero=True) # rotation part O.engines = [ ForceResetter(), trans + rot, # composed motion NewtonIntegrator(), PyRunner(iterPeriod=1,initRun=True,command="adjustKinematicEngines()"), # adjust the motion every iteration ] O.dt = 1e-4 def adjustKinematicEngines(): t = O.time trans.translationAxis = (0,0,1) trans.velocity = cos(2*t) # rot.rotationAxis = (1,0,0) z = .5*sin(2*t) # here integral of trans.velocity function rot.zeroPoint = (0,0,z) rot.angularVelocity = sin(1.6*t)+1 ### or you can use some existing (or implement a new one and then use it) kinematic engine dedicated for that motion. cheers Jan -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
