lwgeom_is_simple()

int lwgeom_is_simple

(

const LWGEOM *

geom

)

Definition at line 1470 of file liblwgeom/lwgeom_geos.c.

References lwerror(), LWGEOM2GEOS(), lwgeom_geos_errmsg, lwgeom_geos_error(), lwgeom_is_empty(), and lwnotice().

Referenced by _lwt_AddEdge(), issimple(), lwt_AddIsoEdge(), and lwt_ChangeEdgeGeom().

{
        GEOSGeometry* geos_in;
        int simple;

        /* Empty is always simple */
        if ( lwgeom_is_empty(geom) )
        {
                return 1;
        }

        initGEOS(lwnotice, lwgeom_geos_error);

        geos_in = LWGEOM2GEOS(geom, 0);
        if ( 0 == geos_in )   /* exception thrown at construction */
        {
                lwerror("First argument geometry could not be converted to GEOS: %s", lwgeom_geos_errmsg);
                return -1;
        }
        simple = GEOSisSimple(geos_in);
        GEOSGeom_destroy(geos_in);

        if ( simple == 2 ) /* exception thrown */
        {
                lwerror("lwgeom_is_simple: %s", lwgeom_geos_errmsg);
                return -1;
        }

        return simple ? 1 : 0;
}

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