goog.require('ol.Map');
goog.require('ol.RendererHint');
goog.require('ol.View2D');
goog.require('ol.interaction');
goog.require('ol.interaction.DragZoom');
goog.require('ol.layer.Tile');
goog.require('ol.source.OSM');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');


var map = new ol.Map({
  interactions: ol.interaction.defaults().extend([
    new ol.interaction.DragZoom({
      style: new ol.style.Style({
        stroke: new ol.style.Stroke({
          color: 'rgba(255,0,0,1)',
          width: 2
        }),
        fill: new ol.style.Fill({
          color: 'rgba(155,0,0,0.2)'
        })
      })
    })
  ]),
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    })
  ],
  renderer: ol.RendererHint.CANVAS,
  target: 'map',
  view: new ol.View2D({
    center: [0, 0],
    zoom: 2
  })
});