NAME
          DtPolygonGetIndices - Get the polygon indices for the given
          polygon number.


     SYNOPSIS
          #include <Dt.h>


          int  DtPolygonGetIndices( int index, int *vCount, long **vIdx, long **nIdx, long **tIdx)


     DESCRIPTION
          DtPolygonGetIndices() returns a list of vertex, normal and
          texture vertex indices via the read-only pointers to the
          variables vIdx, nIdx and tIdx for the polygon indicated by
          index. The number of indicies in the polygon is return via
          the pointer to the vCount parameter.  The index arrays are
          internal buffer.  Do not free or modify the index arrays.

          This routine must be executed after the DtPolygonGetCount
          routine. DtPolygonGetCount() sets up the proper pointers for
          the index arrays for the desired shape id and group id
          polygon list (see DtPolygonGetCount(3W)).


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


     SEE ALSO
          DtPolygonGetCount(3W)


     FILES
          Link with -lDtOMio