intersects_bbox( a, b )
intersects_bbox( geomFromWKT( 'POINT(4 5)' ) , geom_from_wkt( 'LINESTRING(3 3 , 4 4 , 5 5)' )) → returns 1
intersects_bbox( geomFromWKT( 'POINT(6 5)' ) , geom_from_wkt( 'POLYGON((3 3 , 4 4 , 5 5, 3 3))' )) → returns 0