[vtkusers] Shadows

[Gharrison9 at aol.com]

In the Visualization Toolkit 2nd Edition book I see that in plate 62 
regarding the Computational fluid dynamics visualization there are shadows.  
I would like to know how this is done.

On on one of our projects we are working on animating a tower crane sitting 
on a 2D in 3D surface where we would like the entire assembly to have shadows 
on the ground -- as we turn the crane.  This can be done of course with raw 
calculations, but since we are rendering within each animation, we don't want 
to extensive calculations to effect significantly the speed or rotation.

Any ideas are appreciated.  I suspect that this is either a trivial problem 
or extremely complex.

George


George C. Harrison   Professor of Computer Science
Norfolk State University
Telephone: 757-823-8654
Fax: 757-823-9229
email: gcharrison at nsu.edu
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