[vtkusers] vtkMultiChannel

[David Borland]

I've written a library to make it easier to set up multi-channel 
rendering (multiple views of the same scene) for some of the 
visualization environments available at RENCI at UNC-Chapel Hill 
(http://unc.renci.org/) . One nice feature (I think) is that it uses a 
single vtkRenderWindow/vtkRenderWindowInteractor/vtkRenderer combo, so 
you don’t need to worry about making sure multiple renderers are 
synchronized. It has been used for an ultra-high resolution passive 
stereo environment, a multi-projector dome environment, and a 
head-mounted display device at UNC-CH computer science.

Currently, only Windows is supported, but it should be easy to add 
support for other operating systems. Also, picking with the mouse is 
currently broken. If anyone is interested in trying it out, you can find 
out more and download the source here: 
http://unc.renci.org/rencinews/vtkmultichannel

It's still a work in progress, but if enough people find it useful, it 
might be worth discussing incorporating this type of functionality (if 
not the exact implementation) into VTK proper. Thanks,

David Borland
Senior Visualization Researcher
The Renaissance Computing Institute