Add ol.geom.Geometry#translate

src/ol/geom/geometry.js

@@ -194,6 +194,16 @@ ol.geom.Geometry.prototype.applyTransform = goog.abstractMethod;
 ol.geom.Geometry.prototype.intersectsExtent = goog.abstractMethod;
 
 
+/**
+ * Translate the geometry.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @function
+ * @api
+ */
+ol.geom.Geometry.prototype.translate = goog.abstractMethod;
+
+
 /**
  * Transform each coordinate of the geometry from one coordinate reference
  * system to another. The geometry is modified in place.

src/ol/geom/geometrycollection.js

@@ -277,6 +277,22 @@ ol.geom.GeometryCollection.prototype.applyTransform = function(transformFn) {
 };
 
 
+/**
+ * Translate the geometry.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @api
+ */
+ol.geom.GeometryCollection.prototype.translate = function(deltaX, deltaY) {
+  var geometries = this.geometries_;
+  var i, ii;
+  for (i = 0, ii = geometries.length; i < ii; ++i) {
+    geometries[i].translate(deltaX, deltaY);
+  }
+  this.changed();
+};
+
+
 /**
  * @inheritDoc
  */

src/ol/geom/simplegeometry.js

@@ -255,6 +255,24 @@ ol.geom.SimpleGeometry.prototype.applyTransform = function(transformFn) {
 };
 
 
+/**
+ * Translate the geometry.
+ * @param {number} deltaX Delta X.
+ * @param {number} deltaY Delta Y.
+ * @api
+ */
+ol.geom.SimpleGeometry.prototype.translate = function(deltaX, deltaY) {
+  var flatCoordinates = this.getFlatCoordinates();
+  if (!goog.isNull(flatCoordinates)) {
+    var stride = this.getStride();
+    ol.geom.flat.transform.translate(
+        flatCoordinates, 0, flatCoordinates.length, stride,
+        deltaX, deltaY, flatCoordinates);
+    this.changed();
+  }
+};
+
+
 /**
  * @param {ol.geom.SimpleGeometry} simpleGeometry Simple geometry.
  * @param {goog.vec.Mat4.Number} transform Transform.