NAME
          DtPointGetIndex - Gets the list of point indices for all the
          points in the given shape and group IDs.


     SYNOPSIS
          #include <Dt.h>


          int DtPointGetIndex( int shapeID, int groupID, int *count, long **indices);


     DESCRIPTION
          DtPointGetIndex() returns a list of point vertex indices via
          the pointer to the variable indices given the shape number,
          shapeID, and group number, groupID. The total number of
          indices (the length of the indices array) is returned via
          the pointer to the count parameter.  Each point list is
          terminated by DtEND_OF_FACE (-1). For example, if the first
          group (groupID = 0) of the first shape (shapeID = 0) has 10
          points, the format of the index array will be:

               1 2 3 4 -1

          where indices 1, 2, 3 and 4 are the point indices and -1 is
          the list terminator.  The parameter count will be set to 5.

          If no line objects exist the indices array will be set to
          NULL.  The indices array is an internal buffer.  Do not free
          or modify the index array.


     IMPLEMENTATION
          The AliasAPI implementation of Dt does not support points.
          No point geometry will be returned by this function.


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


     SEE ALSO
          DtIndexCount(3W)


     FILES
          Link with -lDtOMio