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[Weimin Song <question404190@xxxxxxxxxxxxxxxxxxxxx>]

Question #404190 on Yade changed:
https://answers.launchpad.net/yade/+question/404190

    Status: Answered => Open

Weimin Song is still having a problem:
Thank you, Jan.

I tried the code below, however, it doesn't work.  Could you explain
your approach in more detail?

def myFunction():
       intrs = []
       for i in O.interactions:
             b1 = O.bodies[i.id1]
             b2 = O.bodies[i.id2]
             if isinstance(b1.shape,Polyhedra) and isinstance(b2.shape,Polyhedra):
                 intrs.append((i.id1,i.id2))
                 vtkExporter.exportInteractions(ids=intrs)

...
O.engines=[
       ForceResetter(),    
       InsertionSortCollider(...),
       InteractionLoop(...),
       NewtonIntegrator(...),
       PyRunner(command='myFunction()',iterPeriod=50), 
]

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