Get rid of ol.FeatureOverlay

This also introduces a wrapX option to the Draw, Modify and Select
interaction.

examples/draw-and-modify-features.js

@@ -1,11 +1,13 @@
-goog.require('ol.FeatureOverlay');
+goog.require('ol.Collection');
 goog.require('ol.Map');
 goog.require('ol.View');
 goog.require('ol.events.condition');
 goog.require('ol.interaction.Draw');
 goog.require('ol.interaction.Modify');
 goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
 goog.require('ol.source.MapQuest');
+goog.require('ol.source.Vector');
 goog.require('ol.style.Circle');
 goog.require('ol.style.Fill');
 goog.require('ol.style.Stroke');
@@ -24,11 +26,9 @@ var map = new ol.Map({
   })
 });
 
-// The features are not added to a regular vector layer/source,
-// but to a feature overlay which holds a collection of features.
-// This collection is passed to the modify and also the draw
-// interaction, so that both can add or modify features.
-var featureOverlay = new ol.FeatureOverlay({
+var features = new ol.Collection();
+var featureOverlay = new ol.layer.Vector({
+  source: new ol.source.Vector({features: features}),
   style: new ol.style.Style({
     fill: new ol.style.Fill({
       color: 'rgba(255, 255, 255, 0.2)'
@@ -48,7 +48,7 @@ var featureOverlay = new ol.FeatureOverlay({
 featureOverlay.setMap(map);
 
 var modify = new ol.interaction.Modify({
-  features: featureOverlay.getFeatures(),
+  features: features,
   // the SHIFT key must be pressed to delete vertices, so
   // that new vertices can be drawn at the same position
   // of existing vertices
@@ -62,7 +62,7 @@ map.addInteraction(modify);
 var draw; // global so we can remove it later
 function addInteraction() {
   draw = new ol.interaction.Draw({
-    features: featureOverlay.getFeatures(),
+    features: features,
     type: /** @type {ol.geom.GeometryType} */ (typeSelect.value)
   });
   map.addInteraction(draw);