var AirplaneSymbolLayer =  {};
AirplaneSymbolLayer.new = func(group,name, controller) {
	var m=Layer.new(group, name, AirplaneSymbolModel);
	m._model._controller = controller; # set up the controller for the model !!!!!
	m.setDraw (func draw_layer(layer:m, callback: draw_airplane_symbol, lod:0) );
	return m;
}

register_layer("airplaneSymbol", AirplaneSymbolLayer);