ST_TriangulatePolygon()

Datum ST_TriangulatePolygon

(

PG_FUNCTION_ARGS

)

Definition at line 2267 of file postgis/lwgeom_geos.c.

{
#if POSTGIS_GEOS_VERSION < 31100
 
        lwpgerror("The GEOS version this PostGIS binary "
                  "was compiled against (%d) doesn't support "
                  "'GEOSConstrainedDelaunayTriangulation' function (3.11.0+ required)",
                  POSTGIS_GEOS_VERSION);
        PG_RETURN_NULL();
 
#else /* POSTGIS_GEOS_VERSION >= 31100 */
        GSERIALIZED *result;
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        LWGEOM *lwgeom_in = lwgeom_from_gserialized(geom);
        LWGEOM *lwgeom_out = lwgeom_triangulate_polygon(lwgeom_in);
        lwgeom_free(lwgeom_in);
 
        if (!lwgeom_out)
        {
                PG_FREE_IF_COPY(geom, 0);
                PG_RETURN_NULL();
        }
 
        result = geometry_serialize(lwgeom_out);
        lwgeom_free(lwgeom_out);
 
        PG_FREE_IF_COPY(geom, 0);
        PG_RETURN_POINTER(result);
#endif
}

References lwgeom_free(), lwgeom_from_gserialized(), lwgeom_triangulate_polygon(), POSTGIS_GEOS_VERSION, and result.

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