Expose removeVertex_ as removePoint

src/ol/interaction/modifyinteraction.js

@@ -240,6 +240,12 @@ ol.interaction.Modify = function(options) {
   ol.events.listen(this.features_, ol.CollectionEventType.REMOVE,
       this.handleFeatureRemove_, this);
 
+  /**
+   * @type {ol.MapBrowserPointerEvent}
+   * @private
+   */
+  this.lastPointerEvent_ = null;
+
 };
 goog.inherits(ol.interaction.Modify, ol.interaction.Pointer);
 
@@ -696,6 +702,7 @@ ol.interaction.Modify.handleEvent = function(mapBrowserEvent) {
   if (!(mapBrowserEvent instanceof ol.MapBrowserPointerEvent)) {
     return true;
   }
+  this.lastPointerEvent_ = mapBrowserEvent;
 
   var handled;
   if (!mapBrowserEvent.map.getView().getHints()[ol.ViewHint.INTERACTING] &&
@@ -709,11 +716,7 @@ ol.interaction.Modify.handleEvent = function(mapBrowserEvent) {
       var geometry = this.vertexFeature_.getGeometry();
       goog.asserts.assertInstanceof(geometry, ol.geom.Point,
           'geometry should be an ol.geom.Point');
-      this.willModifyFeatures_(mapBrowserEvent);
+      handled = this.removePoint();
-      handled = this.removeVertex_();
-      this.dispatchEvent(new ol.interaction.ModifyEvent(
-          ol.ModifyEventType.MODIFYEND, this.features_, mapBrowserEvent));
-      this.modified_ = false;
     } else {
       handled = true;
     }
@@ -879,6 +882,23 @@ ol.interaction.Modify.prototype.insertVertex_ = function(segmentData, vertex) {
   this.ignoreNextSingleClick_ = true;
 };
 
+/**
+ * Removes the vertex currently being pointed.
+ * @return {boolean} True when a vertex was removed.
+ * @api
+ */
+ol.interaction.Modify.prototype.removePoint = function() {
+  var handled = false;
+  if (this.lastPointerEvent_) {
+    var evt = this.lastPointerEvent_;
+    this.willModifyFeatures_(evt);
+    handled = this.removeVertex_();
+    this.dispatchEvent(new ol.interaction.ModifyEvent(
+        ol.ModifyEventType.MODIFYEND, this.features_, evt));
+    this.modified_ = false;
+  }
+  return handled;
+};
 
 /**
  * Removes a vertex from all matching features.

test/spec/ol/interaction/modifyinteraction.test.js

@@ -252,6 +252,43 @@ describe('ol.interaction.Modify', function() {
       validateEvents(events, features);
     });
 
+    it('deletes vertex of a LineString programmatically', function() {
+      var lineFeature = new ol.Feature({
+        geometry: new ol.geom.LineString(
+          [[0, 0], [10, 20], [0, 40], [40, 40], [40, 0]]
+        )
+      });
+      features.length = 0;
+      features.push(lineFeature);
+      features.push(lineFeature.clone());
+
+      var first = features[0];
+      var firstRevision = first.getGeometry().getRevision();
+
+      var modify = new ol.interaction.Modify({
+        features: new ol.Collection(features)
+      });
+      map.addInteraction(modify);
+
+      var events = trackEvents(first, modify);
+
+      expect(first.getGeometry().getRevision()).to.equal(firstRevision);
+      expect(first.getGeometry().getCoordinates()).to.have.length(5);
+
+      simulateEvent('pointerdown', 40, 0, false, 0);
+      simulateEvent('pointerup', 40, 0, false, 0);
+
+      modify.removePoint();
+
+      expect(first.getGeometry().getRevision()).to.equal(firstRevision + 1);
+      expect(first.getGeometry().getCoordinates()).to.have.length(4);
+      expect(first.getGeometry().getCoordinates()[3][0]).to.equal(40);
+      expect(first.getGeometry().getCoordinates()[3][1]).to.equal(40);
+
+      validateEvents(events, features);
+    });
+
+
   });
 
   describe('boundary modification', function() {