private static void getArealGeometry ( ArrayList < Polygon > polygones , Geometry geometry ) { for ( int i = 0 ; i < geometry . getNumGeometries ( ) ; i ++ ) { Geometry subGeom = geometry . getGeometryN ( i ) ; if ( subGeom instanceof Polygon ) { polygones . add ( ( Polygon ) subGeom ) ; } else if ( subGeom instanceof GeometryCollection ) { getArealGeometry ( polygones , subGeom ) ; } } }
Filter polygon from a geometry