[vtkusers] Counting FPS

[Julian Ibarz]

I would like to count the current FPS for benchmark issue. But it seems VTK
render only if an explicit call to a Render() method is called or a mouse
event is detected. So I decided to count the time a rendering take and
moving the mouse... So I used renderer.GetLastRenderTimeInSeconds(); but it
seems to not give the real time (If I have two thousands actors I'm about 4
fps and this method returns about 10 ms to render which means i'm about 100
fps...). I think the render time is only the "opengl part "time and not the
data and actor management. I need really all those times, the real time...

Could someone has a trick to force VTK to render always ? And could we know
the real time a rendering pass take easily ?

Thanks and sorry for my bad english ;)

-- 
Julian Ibarz
Web site (In French) : http://julian-ibarz.developpez.com
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