[vtkusers] TimerEvents not fired while dragging mouse in vtkRenderWindow
ken.martin at kitware.com
Tue Nov 14 11:53:15 EST 2017
I suspect timer events are fired but something else is consuming them.
Probably in the interactor style. Try adding your timer events with a
higher priority like 10.0 (third argument).
On Mon, Nov 13, 2017 at 3:21 PM, Kolja Petersen <petersenkolja at gmail.com>
> I paste some code below, which displays an empty vtkRenderWindow with an
> interactor. The interactor fires a TimerEvent every 100ms as printed by the
> The problem: as long as I press a mouse button in the vtkRenderWindow, the
> TimerEvents stop to be reported, although I need to process data
> periodically in my application as a reaction to those TimerEvents.
> Why are no TimerEvents fired while a button is pressed, and how can I
> change this behaviour?
> Thank you
> import vtk
> class Observer(object):
> def __init__(self):
> def __call__(self,caller,evt):
> print "count %d %s" % (self.cnt,evt)
> ren1 = vtk.vtkRenderer()
> ren1.SetBackground(0.1, 0.2, 0.4)
> renWin = vtk.vtkRenderWindow()
> renWin.SetSize(300, 300)
> iren = vtk.vtkRenderWindowInteractor()
> style = vtk.vtkInteractorStyleTrackballCamera()
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