Add a worldExtent to ol.proj.Projection

src/ol/proj/proj.js

@@ -86,6 +86,13 @@ ol.proj.Projection = function(options) {
    */
   this.extent_ = goog.isDef(options.extent) ? options.extent : null;
 
+  /**
+   * @private
+   * @type {ol.Extent}
+   */
+  this.worldExtent_ = goog.isDef(options.worldExtent) ?
+      options.worldExtent : null;
+
   /**
    * @private
    * @type {string}
@@ -148,6 +155,16 @@ ol.proj.Projection.prototype.getMetersPerUnit = function() {
 };
 
 
+/**
+ * Get the world extent for this projection.
+ * @return {ol.Extent} Extent.
+ * @api
+ */
+ol.proj.Projection.prototype.getWorldExtent = function() {
+  return this.worldExtent_;
+};
+
+
 /**
  * Get the axis orientation of this projection.
  * Example values are:
@@ -198,6 +215,17 @@ ol.proj.Projection.prototype.setExtent = function(extent) {
 };
 
 
+/**
+ * Set the world extent for this projection.
+ * @param {ol.Extent} worldExtent World extent
+ *     [minlon, minlat, maxlon, maxlat].
+ * @api
+ */
+ol.proj.Projection.prototype.setWorldExtent = function(worldExtent) {
+  this.worldExtent_ = worldExtent;
+};
+
+
 /**
  * Get the resolution of the point in degrees. For projections with degrees as
  * the unit this will simply return the provided resolution. For other