[vtkusers] What does pressing key 'm' while volume rendering do?

[Michael Kloster]

Hello everybody.

Just by chance I noticed that pressing the key 'm' does improve the 
volume rendering of objects with very fine details.

The same effect happens when rotating the volume with the mouse: as long 
as it is moving I can see more details (just like after pressing 'm'), 
but when i release the mouse button the volume seems to become more 
opaque (or details are missing).

This happens with vtkFixedPointVolumeRayCastMapper as well as with 
vtkVolumeTextureMapper3D.


Does anybody know what this behaviour is and how to achieve it via TCL 
commands?

Another interesting things happens when hitting the 'a' key: VTK just 
crashes...

I use the standard interactor.


Have a nice day,
Michael