[vtkusers] Capturing Renderwindow frames

[de Boer Ingo]

Hi,

why don't you render directly into a MemoryDC and draw it
to a bitmap? Take a look at:

http://public.kitware.com/cgi-bin/viewcvs.cgi/GUISupport/MFC/vtkMFCWindow.cpp?view=markup

void vtkMFCWindow::DrawDC(CDC* pDC)

greets
  Ingo

---
Dr.-Ing. Ingo H. de Boer

Polytec GmbH
Polytec-Platz 1-7, 76337 Waldbronn, Germany
phone: ++49 7243 604 106
fax  : ++49 7243 604 255
  
-----Original Message-----
Subject: [vtkusers] Capturing Renderwindow frames


Hello everyone,
 
I'm trying to create an AVI file from frames captured from a renderwindow using GetRGBACharPixelData().  For some things I use a timer (MS C++ SetTimer()) to call both Render() and GetRGBACharPixelData(), in that order, and that works just fine.  Other times I use mouse movement to call Render() on the RenderWindow and use a timer to call GetRGBACharPixelData().  But this second method doesn't update fast enough.  If I setup the timer to grab 1 frame per second then it sort of works but when doing something like drawing a line; the line won't always show until the drawing is complete.  Is there a better way of approaching this?????

Beau