Add ol.extent.empty

2013-05-25 20:38:11 -05:00
parent 18b1789512
commit f0baf2efc2
1 changed files with 12 additions and 0 deletions
--- a/src/ol/extent.js
+++ b/src/ol/extent.js
@@ -111,6 +111,18 @@ ol.extent.createOrUpdate = function(minX, maxX, minY, maxY, extent) {
 };


+/**
+ * Empties extent in place.
+ * @param {ol.Extent} extent Extent.
+ * @return {ol.Extent} Extent.
+ */
+ol.extent.empty = function(extent) {
+  extent[0] = extent[2] = Infinity;
+  extent[1] = extent[3] = -Infinity;
+  return extent;
+};
+
+
 /**
 * @param {ol.Extent} extent1 Extent 1.
 * @param {ol.Extent} extent2 Extent 2.