containsproperly()

Datum containsproperly

(

PG_FUNCTION_ARGS

)

Definition at line 1939 of file postgis/lwgeom_geos.c.

References PrepGeomCache::argnum, covers(), error_if_srid_mismatch(), errorIfGeometryCollection(), FALSE, gbox_contains_2d(), GetPrepGeomCache(), gserialized_get_gbox_p(), gserialized_get_srid(), gserialized_is_empty(), HANDLE_GEOS_ERROR, lwgeom_geos_error(), PG_FUNCTION_INFO_V1(), POSTGIS2GEOS(), and PrepGeomCache::prepared_geom.

Referenced by contains().

{
        GSERIALIZED *                           geom1;
        GSERIALIZED *                           geom2;
        char                                    result;
        GBOX                    box1, box2;
        PrepGeomCache * prep_cache;

        geom1 = PG_GETARG_GSERIALIZED_P(0);
        geom2 = PG_GETARG_GSERIALIZED_P(1);

        errorIfGeometryCollection(geom1,geom2);
        error_if_srid_mismatch(gserialized_get_srid(geom1), gserialized_get_srid(geom2));

        /* A.ContainsProperly(Empty) == FALSE */
        if ( gserialized_is_empty(geom1) || gserialized_is_empty(geom2) )
                PG_RETURN_BOOL(false);

        /*
        * short-circuit: if geom2 bounding box is not completely inside
        * geom1 bounding box we can prematurely return FALSE.
        */
        if ( gserialized_get_gbox_p(geom1, &box1) &&
                gserialized_get_gbox_p(geom2, &box2) )
        {
                if ( ! gbox_contains_2d(&box1, &box2) )
                        PG_RETURN_BOOL(FALSE);
        }

        initGEOS(lwpgnotice, lwgeom_geos_error);

        prep_cache = GetPrepGeomCache( fcinfo, geom1, 0 );

        if ( prep_cache && prep_cache->prepared_geom && prep_cache->argnum == 1 )
        {
                GEOSGeometry *g = (GEOSGeometry *)POSTGIS2GEOS(geom2);
                if ( 0 == g )   /* exception thrown at construction */
                {
                        HANDLE_GEOS_ERROR("First argument geometry could not be converted to GEOS");
                        PG_RETURN_NULL();
                }
                result = GEOSPreparedContainsProperly( prep_cache->prepared_geom, g);
                GEOSGeom_destroy(g);
        }
        else
        {
                GEOSGeometry *g2;
                GEOSGeometry *g1;

                g1 = (GEOSGeometry *)POSTGIS2GEOS(geom1);
                if ( 0 == g1 )   /* exception thrown at construction */
                {
                        HANDLE_GEOS_ERROR("First argument geometry could not be converted to GEOS");
                        PG_RETURN_NULL();
                }
                g2 = (GEOSGeometry *)POSTGIS2GEOS(geom2);
                if ( 0 == g2 )   /* exception thrown at construction */
                {
                        HANDLE_GEOS_ERROR("Second argument geometry could not be converted to GEOS");
                        GEOSGeom_destroy(g1);
                        PG_RETURN_NULL();
                }
                result = GEOSRelatePattern( g1, g2, "T**FF*FF*" );
                GEOSGeom_destroy(g1);
                GEOSGeom_destroy(g2);
        }

        if (result == 2)
        {
                HANDLE_GEOS_ERROR("GEOSContains");
                PG_RETURN_NULL(); /* never get here */
        }

        PG_FREE_IF_COPY(geom1, 0);
        PG_FREE_IF_COPY(geom2, 1);

        PG_RETURN_BOOL(result);
}

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