LWGEOM_maxdistance2d_linestring()

Datum LWGEOM_maxdistance2d_linestring

(

PG_FUNCTION_ARGS

)

Definition at line 789 of file lwgeom_functions_basic.c.

{
        double maxdist;
        GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
        GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
        LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
        LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
        gserialized_error_if_srid_mismatch(geom1, geom2, __func__);
 
        maxdist = lwgeom_maxdistance2d(lwgeom1, lwgeom2);
 
        PG_FREE_IF_COPY(geom1, 0);
        PG_FREE_IF_COPY(geom2, 1);
 
        /*if called with empty geometries the ingoing mindistance is untouched, and makes us return NULL*/
        if (maxdist > -1)
                PG_RETURN_FLOAT8(maxdist);
 
        PG_RETURN_NULL();
}

References gserialized_error_if_srid_mismatch(), lwgeom_from_gserialized(), and lwgeom_maxdistance2d().

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