NAME
          DtPolygonGetCount - Get the number of polygons in a given
          group.


     SYNOPSIS
          #include <Dt.h>


          int  DtPolygonGetCount( int shapeID, int groupID, int *count )


     DESCRIPTION
          DtPolygonGetCount() returns the number of polygons in the
          given group indicated by groupID and the given shape
          indicated by shapeID. The number of polygons is returned via
          the pointer to the count parameter.
          NOTE: The polygons in a shape are sorted by material and
          placed into groups.  Each shape is made up of one or more
          groups depending on the number of materials that are
          assigned to the shape.


     DIAGNOSTICS
          DtPolygonGetCount() returns one on success and zero on
          failure.


     SEE ALSO
          DtPolygonGetIndices(3W)


     FILES
          Link with -lDtOMio