Hi Bob,
>
> Dear Bill and The VisAD list,
>
> I would like to know if there is a way to rotate the view volume by a
> fixed amount (e.g. 90 degrees) in a fixed direction (e.g. to the left, so
> about the volume's own say 'Y' axis).
In case you want to rotate the display by multiples of 90° (in whatever
direction), then consider using the method
ProjectionControlJ3D.setOrthoView(int view)
with valid views being:
/** View of the postive X face of the display cube */
public static final int X_PLUS = 0;
/** View of the negative X face of the display cube */
public static final int X_MINUS = 1;
/** View of the postive Y face of the display cube */
public static final int Y_PLUS = 2;
etc...
Please refer to the following message in the list archive
http://www.unidata.ucar.edu/glimpse/visad-list/1534
for more info on the subject.
Cheers,
Ugo
