goog.require('ol.Map');
goog.require('ol.Observable');
goog.require('ol.Overlay');
goog.require('ol.Sphere');
goog.require('ol.View');
goog.require('ol.geom.LineString');
goog.require('ol.geom.Polygon');
goog.require('ol.interaction.Draw');
goog.require('ol.layer.Tile');
goog.require('ol.layer.Vector');
goog.require('ol.proj');
goog.require('ol.source.OSM');
goog.require('ol.source.Vector');
goog.require('ol.style.Circle');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');
