boundary()

Datum boundary

(

PG_FUNCTION_ARGS

)

Definition at line 3385 of file lwgeom_functions_basic.c.

{
        GSERIALIZED *geom1;
        GSERIALIZED *result;
        LWGEOM *lwgeom, *lwresult;
 
        geom1 = PG_GETARG_GSERIALIZED_P(0);
 
        /* Empty.Boundary() == Empty, but of other dimension, so can't shortcut */
 
        lwgeom = lwgeom_from_gserialized(geom1);
        lwresult = lwgeom_boundary(lwgeom);
        if (!lwresult)
        {
                lwgeom_free(lwgeom);
                PG_RETURN_NULL();
        }
 
        result = geometry_serialize(lwresult);
 
        lwgeom_free(lwgeom);
        lwgeom_free(lwresult);
 
        PG_RETURN_POINTER(result);
}

References lwgeom_boundary(), lwgeom_free(), lwgeom_from_gserialized(), and result.

Referenced by ST_LargestEmptyCircle().

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