parse_geojson_multipolygon()

static LWGEOM* parse_geojson_multipolygon ( json_object *  geojson, int *  hasz, int  root_srid  )

static

Definition at line 390 of file lwin_geojson.c.

References findMemberByName(), geojson_lwerror(), lwcollection_construct_empty(), lwgeom_has_m(), lwgeom_has_z(), lwmpoly_add_lwpoly(), lwpoly_add_ring(), lwpoly_construct_empty(), MULTIPOLYGONTYPE, parse_geojson_coord(), ptarray_construct_empty(), and LWGEOM::srid.

Referenced by parse_geojson().

{
        LWGEOM *geom = NULL;
        int i, j, k;
        json_object* poObjPolys = NULL;

        if (!root_srid)
        {
                geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, root_srid, 1, 0);
        }
        else
        {
                geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, -1, 1, 0);
        }

        poObjPolys = findMemberByName( geojson, "coordinates" );
        if ( ! poObjPolys )
        {
                geojson_lwerror("Unable to find 'coordinates' in GeoJSON string", 4);
                return NULL;
        }

        if( json_type_array == json_object_get_type( poObjPolys ) )
        {
                const int nPolys = json_object_array_length( poObjPolys );

                for(i = 0; i < nPolys; ++i)
                {
                        json_object* poObjPoly = json_object_array_get_idx( poObjPolys, i );

                        if( json_type_array == json_object_get_type( poObjPoly ) )
                        {
                                LWPOLY *lwpoly = lwpoly_construct_empty(geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));
                                int nRings = json_object_array_length( poObjPoly );

                                for(j = 0; j < nRings; ++j)
                                {
                                        json_object* points = json_object_array_get_idx( poObjPoly, j );

                                        if( json_type_array == json_object_get_type( points ) )
                                        {

                                                POINTARRAY *pa = ptarray_construct_empty(1, 0, 1);

                                                int nPoints = json_object_array_length( points );
                                                for ( k=0; k < nPoints; k++ )
                                                {
                                                        json_object* coords = json_object_array_get_idx( points, k );
                                                        parse_geojson_coord(coords, hasz, pa);
                                                }

                                                lwpoly_add_ring(lwpoly, pa);
                                        }
                                }
                                geom = (LWGEOM*)lwmpoly_add_lwpoly((LWMPOLY*)geom, lwpoly);
                        }
                }
        }

        return geom;
}

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