Merge pull request #1331 from twpayne/rbush-is-empty

Add ol.structs.RBush#isEmpty
2013-12-04 06:26:41 -08:00
parent b64e899b92 2be40a1ae6
commit bcda3aa3c2
2 changed files with 42 additions and 0 deletions
--- a/src/ol/structs/rbush.js
+++ b/src/ol/structs/rbush.js
@@ -574,6 +574,14 @@ ol.structs.RBush.prototype.insert_ = function(extent, value, level) {
 };


+/**
+ * @return {boolean} Is empty.
+ */
+ol.structs.RBush.prototype.isEmpty = function() {
+  return this.root_.children.length === 0;
+};
+
+
 /**
 * @param {T} value Value.
 */