 LIB "polymake.lib";
// the lattice polygon spanned by the points (0,0), (3,0) and (0,3)
// with all integer points as markings
list polygon=intvec(1,1),intvec(3,0),intvec(2,0),intvec(1,0),
intvec(0,0),intvec(2,1),intvec(0,1),intvec(1,2),
intvec(0,2),intvec(0,3);
// split the polygon in its vertices, its facets and its interior points
list sp=splitPolygon(polygon);
// define a triangulation by connecting the only interior point
// with the vertices
list triang=intvec(1,2,5),intvec(1,5,10),intvec(1,5,10);
// compute the etavector of this triangulation
eta(triang,sp);
