1) in a group viz it would be desirable to have two cursors. A regular cursor that would operate as expected under the OS, and a second cursor that would be restricted to the view window overlay.
The first cursor would be controlled by the viz operator used to adjust parameters. The second cursor would be controlled by the group through a gamepad etc, that could be used as a pointer.
Possibly the volume eraser might be a quick work around.
2) volume eraser when erasing sets the density to zero. Need to be able to set the value. Zero is a valid density value, usually in the middle of the density histogram, which causes problems for volume rendering.
Matthew Dougherty
National Center for Macromolecular Imaging
Baylor College of Medicine
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