add toolkit compass use back in

Author: tschie

build.gradle

@@ -23,6 +23,7 @@ eclipse.classpath.downloadJavadoc = true
 compileJava.options.encoding = 'UTF-8'
 
 dependencies {
+    compile 'com.esri.arcgisruntime:arcgis-java-toolkit:100.2.1'
     compile 'commons-io:commons-io:2.4'
     compile 'org.jooq:joox:1.4.0'
 }

src/main/java/com/esri/samples/mapview/map_rotation/MapRotationSample.java

@@ -34,6 +34,7 @@
 import com.esri.arcgisruntime.mapping.Basemap;
 import com.esri.arcgisruntime.mapping.Viewpoint;
 import com.esri.arcgisruntime.mapping.view.MapView;
+import com.esri.arcgisruntime.toolkit.Compass;
 
 public class MapRotationSample extends Application {
 
@@ -85,6 +86,13 @@ public void start(Stage stage) throws Exception {
       mapView = new MapView();
       mapView.setMap(map);
 
+      // create a compass to show the current heading when rotated
+      Compass compass = new Compass(mapView);
+
+      // clicking the compass sets the map's heading to 0.0
+      // add a listener to reset the slider when this happens
+      compass.setOnMouseClicked(e -> slider.setValue(0.0));
+
       // create a starting viewpoint for the map view
       SpatialReference spatialReference = SpatialReferences.getWebMercator();
       Point pointBottomLeft = new Point(-13639984.0, 4537387.0, spatialReference);
@@ -96,9 +104,11 @@ public void start(Stage stage) throws Exception {
       mapView.setViewpointAsync(viewpoint);
 
       // add the map view, slider, and compass to the stack pane
-      stackPane.getChildren().addAll(mapView, slider);
+      stackPane.getChildren().addAll(mapView, slider, compass);
       StackPane.setAlignment(slider, Pos.TOP_LEFT);
+      StackPane.setAlignment(compass, Pos.TOP_RIGHT);
       StackPane.setMargin(slider, new Insets(10, 0, 0, 10));
+      StackPane.setMargin(compass, new Insets(10, 10, 0, 0));
     } catch (Exception e) {
       // on any error, display the stack trace
       e.printStackTrace();