LWGEOM_length_ellipsoid_linestring()

Datum LWGEOM_length_ellipsoid_linestring

(

PG_FUNCTION_ARGS

)

Definition at line 360 of file lwgeom_spheroid.c.

References lwgeom_free(), lwgeom_from_gserialized(), lwgeom_is_empty(), and lwgeom_length_spheroid().

Referenced by LWGEOM_length2d_ellipsoid().

{
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        LWGEOM *lwgeom = lwgeom_from_gserialized(geom);
        SPHEROID *sphere = (SPHEROID *) PG_GETARG_POINTER(1);
        double length = 0.0;

        /* EMPTY things have no length */
        if ( lwgeom_is_empty(lwgeom) )
        {
                lwgeom_free(lwgeom);
                PG_RETURN_FLOAT8(0.0);
        }

        length = lwgeom_length_spheroid(lwgeom, sphere);
        lwgeom_free(lwgeom);
        PG_FREE_IF_COPY(geom, 0);

        /* Something went wrong... */
        if ( length < 0.0 )
        {
                elog(ERROR, "lwgeom_length_spheroid returned length < 0.0");
                PG_RETURN_NULL();
        }

        /* Clean up */
        PG_RETURN_FLOAT8(length);
}

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