[Visualpython-users] synchronization of visualization thread

[Markus G. <gr...@iu...>]

Hi!

It would be nice if the visualization thread could be somehow
synchronized with the thread running the Python script.  The problem
without synchronization is that the visualization of a scene with much
animation in it is "distorted", because during a visualization cycle
some objects have their old position and some others already appear on
their new location.  For example I have a scene with some springs in
it, each represented by a helix (curve).  Because the whole spring is
moveing around quite fast, part of it has the old coordinates and the
other part already appears at the new calculated ones.

Would it be possible to hav a function similar to visual.rate() which
suspends the visualization thread and another to reactivate it?  In
this way it would be possible in the while loop to suspend it, do the
calculations, activate it and suspend it again before doing the next
cycle.

while 1:
    visual.stop() # suspend the visualization thread
    doMyCalculations()
    visual.start() # resume the visualization thread
    visual.rate(30)

Would this be possible with the current VPython design?

Kind regards, Markus

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