<BODY><P>Hi,</P>
<P>I'm trying to do an animation (simple rotation), and then write it using vtkAVIWriter, but keep failing for some reason. I guess the problem is that the generated .avi file is completely black. The code for that part looks like this:</P><FONT size=2>
<P>vtkWindowToImageFilter w2i</P>
<P>vtkAVIWriter aviWrite</P>
<P>w2i SetInput renWin</P>
<P>aviWrite SetInputConnection [w2i GetOutputPort]</P>
<P>aviWrite SetFileName test.avi</P>
<P>aviWrite Start</P>
<P>aviWrite Write</P>
<P>for {set i 0} {$i <= 100} {incr i} {</P>
<P>volume RotateZ 1</P>
<P>renWin Render</P>
<P>aviWrite SetInputConnection [w2i GetOutputPort]</P>
<P>aviWrite Write</P>
<P>}</P><FONT size=2>
<P>aviWrite End</P>
<P><FONT size=3>So does</FONT> <FONT size=3>anyone know why I only get a completly black video here? By the way my vtkActor is a MIPed object, I don't know if that is of any relevance. </FONT></P>
<P><FONT size=3>Thanks,</FONT></P>
<P><FONT size=3>Markus</FONT></P></FONT></FONT></BODY>