ST_IsPolygonCW()

Datum ST_IsPolygonCW

(

PG_FUNCTION_ARGS

)

Definition at line 1301 of file lwgeom_functions_analytic.c.

References dumpnode::geom, is_clockwise(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_is_clockwise(), PG_FUNCTION_INFO_V1(), and ST_IsPolygonCCW().

Referenced by ST_GeometricMedian().

{
        GSERIALIZED* geom;
        LWGEOM* input;
        bool is_clockwise;

        if (PG_ARGISNULL(0))
                PG_RETURN_NULL();

        geom = PG_GETARG_GSERIALIZED_P(0);
        input = lwgeom_from_gserialized(geom);

        is_clockwise = lwgeom_is_clockwise(input);

        lwgeom_free(input);
        PG_FREE_IF_COPY(geom, 0);

        PG_RETURN_BOOL(is_clockwise);
}

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