[vtkusers] vtkFixedPointVolumeRayCastMapper producing incorect results.

[Kevin H. Hobbs]

When I use the vtkFixedPointVolumeRayCastMapper I get very different results 
from what I get in ParaView. The ParaView result seems correct :

	http://crab-lab.zool.ohiou.edu/kevin/pv_vol_dors.png

but the result from VTK looks like some data has been skipped :
	http://crab-lab.zool.ohiou.edu/kevin/vol_dors.png

The VTK image was produced with the attached program which was supposed to 
save views from the left, anterior, posterior, dorsal, and ventral.

 Does anybody know what might be going on?

This computer is murron on the dashboard.
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