Question #269486 on Yade changed:
https://answers.launchpad.net/yade/+question/269486
Yor1 posted a new comment:
I try to impose the velocity on the piston without using O.engines
To impose the velocity i write: O.bodies[piston].state.vel[1]=1
and this a part of the script:
from yade import ymport, utils , plot, pack, export
from pylab import *
import math
X=15
Y=3
Z=2
r=1
xinf=0
yinf=0
zinf=0
xsup=15
ysup=3
zsup=2
piston=O.bodies.append(geom.facetCylinder(center=(0.5*X,Y+r,Z/2.),radius=r,height=Z,orientation=Quaternion((1,
0, 0), 0),segmentsNumber=20,wire=False)) # haut
O.bodies[piston].state.vel[1]=1
O.saveTmp()
from yade import qt
qt.Controller()
qt.View()
r1=qt.Renderer()
r1.lightPos=Vector3(0,0,50)
O.run(200000)
i obtain this error message:
ArgumentError: Python argument types in
BodyContainer.__getitem__(BodyContainer, list)
did not match C++ signature:
__getitem__(pyBodyContainer {lvalue}, int)
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