Sync map and scene viewpoints

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Sample viewer app

Keep the view points of two views (e.g. MapView and SceneView) synchronized with each other.

Image of sync map and scene viewpoints

Use case

You might need to synchronize GeoView viewpoints if you had two map views in one application - a main map and an inset. An inset map view could display all the layers at their full extent and contain a hollow rectangular graphic that represents the visible extent of the main map view. As you zoom or pan in the main map view, the extent graphic in the inset map would adjust accordingly.

How to use the sample

Interact with the MapView or SceneView by zooming or panning. The other MapView or SceneView will automatically focus on the same viewpoint.

How it works

  1. Wire up the ViewpointChanged event handler for both geo views.
  2. In each event handler, get the current viewpoint from the geo view that is being interacted with and then set the viewpoint of the other geo view to the same value.

Relevant API

  • GeoView
  • MapView
  • SceneView

About the data

This application provides two different perspectives of the Imagery basemap. A 2D MapView as well as a 3D SceneView, displayed side by side.

Tags

3D, automatic refresh, event, event handler, events, extent, interaction, interactions, pan, sync, synchronize, zoom

Sample Code

MainActivity.java
                                                                                     
/* Copyright 2018 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgisruntime.sample.syncmapandsceneviewpoints;

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;

import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.GeoView;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.mapping.view.SceneView;

public class MainActivity extends AppCompatActivity {

  private MapView mMapView;
  private SceneView mSceneView;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // get a reference to the map view and set a map to it
    mMapView = findViewById(R.id.mapView);
    ArcGISMap map = new ArcGISMap(Basemap.createImagery());
    mMapView.setMap(map);

    // get a reference to the scene view and set a scene to it
    mSceneView = findViewById(R.id.sceneView);
    ArcGISScene scene = new ArcGISScene(Basemap.createImagery());
    mSceneView.setScene(scene);

    // on viewpoint change synchronize viewpoints
    mMapView.addViewpointChangedListener(viewpointChangedEvent -> synchronizeViewpoints(mMapView, mSceneView));
    mSceneView.addViewpointChangedListener(viewpointChangedEvent -> synchronizeViewpoints(mSceneView, mMapView));
  }

  /**
   * Synchronizes the viewpoint across GeoViews when the user is navigating.
   */
  private static void synchronizeViewpoints(GeoView navigatingGeoView, GeoView geoViewToSync) {
    if (navigatingGeoView.isNavigating()) {
      Viewpoint navigatingViewpoint = navigatingGeoView.getCurrentViewpoint(Viewpoint.Type.CENTER_AND_SCALE);
      geoViewToSync.setViewpoint(navigatingViewpoint);
    }
  }

  @Override
  protected void onPause() {
    mMapView.pause();
    mSceneView.pause();
    super.onPause();
  }

  @Override
  protected void onResume() {
    super.onResume();
    mMapView.resume();
    mSceneView.resume();
  }

  @Override
  protected void onDestroy() {
    mMapView.dispose();
    mSceneView.dispose();
    super.onDestroy();
  }
}