public class TransparencySortController
This class controls the Transparency Sorting scheme used by Java 3D when
rendering transparent objects. By default (and in all previous versions of
Java 3D) objects are sorted depending on the distance from the viewer of the
centroid of their bounds. By supplying a different Comparator for a view using
the static setComparator method the user can provide their own sorting scheme.
The Comparator provided will be called with 2 objects of class
Set the comparator for the specified view.
The comparators compare method will be called with 2 objects of type
TransparencySortGeom and it's result should indicate which object is
closer to the viewer. Object1 < Object2 if it is to be considered closer
and rendered after.