Choose camera controller

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
/*
 * Copyright 2019 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.choosecameracontroller;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import android.content.res.AssetManager;
import android.os.Bundle;
import androidx.core.content.ContextCompat;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.ArcGISTiledElevationSource;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Surface;
import com.esri.arcgisruntime.mapping.view.Camera;
import com.esri.arcgisruntime.mapping.view.GlobeCameraController;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.LayerSceneProperties;
import com.esri.arcgisruntime.mapping.view.OrbitGeoElementCameraController;
import com.esri.arcgisruntime.mapping.view.OrbitLocationCameraController;
import com.esri.arcgisruntime.mapping.view.SceneView;
import com.esri.arcgisruntime.symbology.ModelSceneSymbol;

public class MainActivity extends AppCompatActivity {

  private static final String TAG = MainActivity.class.getSimpleName();

  private SceneView mSceneView;
  private Graphic mPlane3D;
  private GraphicsOverlay mSceneOverlay;
  private OrbitGeoElementCameraController mOrbitPlaneCameraController;
  private OrbitLocationCameraController mOrbitLocationCameraController;

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

    // authentication with an API key or named user is required to access basemaps and other
    // location services
    ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY);

    // load plane model from assets into cache directory
    copyFileFromAssetsToCache(getString(R.string.bristol_model));
    copyFileFromAssetsToCache(getString(R.string.bristol_skin));

    setupToolbar();

    // create a scene and add it to the scene view
    mSceneView = findViewById(R.id.sceneView);
    ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_IMAGERY);
    mSceneView.setScene(scene);

    // add base surface for elevation data
    Surface surface = new Surface();
    ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(
        getString(R.string.world_elevation_service_url));
    surface.getElevationSources().add(elevationSource);
    scene.setBaseSurface(surface);

    // create a graphics overlay for the scene
    mSceneOverlay = new GraphicsOverlay();
    mSceneOverlay.getSceneProperties().setSurfacePlacement(LayerSceneProperties.SurfacePlacement.ABSOLUTE);
    mSceneView.getGraphicsOverlays().add(mSceneOverlay);

    // create a camera and set it as the viewpoint for when the scene loads
    Camera camera = new Camera(38.459291, -109.937576, 5500, 150.0, 20.0, 0.0);
    mSceneView.setViewpointCamera(camera);

    // instantiate a new camera controller which orbits a target location
    Point locationPoint = new Point(-109.929589, 38.437304, 1700, SpatialReferences.getWgs84());
    mOrbitLocationCameraController = new OrbitLocationCameraController(locationPoint, 5000);
    mOrbitLocationCameraController.setCameraPitchOffset(3);
    mOrbitLocationCameraController.setCameraHeadingOffset(150);

    loadModel().addDoneLoadingListener(() -> {
      // instantiate a new camera controller which orbits the plane at a set distance
      mOrbitPlaneCameraController = new OrbitGeoElementCameraController(mPlane3D, 100.0);
      mOrbitPlaneCameraController.setCameraPitchOffset(30);
      mOrbitPlaneCameraController.setCameraHeadingOffset(150);
    });
  }

  private void setupToolbar() {
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    toolbar.setOverflowIcon(ContextCompat.getDrawable(this, R.drawable.ic_photo_camera));
  }

  @Override public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.camera_controller_menu, menu);
    return super.onCreateOptionsMenu(menu);
  }

  @Override public boolean onOptionsItemSelected(MenuItem item) {
    int itemid = item.getItemId();
    if (itemid == R.id.action_camera_controller_plane) {
      mSceneView.setCameraController(mOrbitPlaneCameraController);
      return true;
    } else if (itemid == R.id.action_camera_controller_crater) {
      mSceneView.setCameraController(mOrbitLocationCameraController);
      return true;
    } else if (itemid == R.id.action_camera_controller_globe) {
      mSceneView.setCameraController(new GlobeCameraController());
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  /**
   * Load the plane model from the cache, use to construct a Model Scene Symbol and add it to the scene's graphic overlay.
   */
  private ModelSceneSymbol loadModel() {
    // create a graphic with a ModelSceneSymbol of a plane to add to the scene
    String pathToModel = getCacheDir() + File.separator + getString(R.string.bristol_model);
    ModelSceneSymbol plane3DSymbol = new ModelSceneSymbol(pathToModel, 1.0);
    plane3DSymbol.setHeading(45);
    mPlane3D = new Graphic(new Point(-109.937516, 38.456714, 5000, SpatialReferences.getWgs84()), plane3DSymbol);
    mSceneOverlay.getGraphics().add(mPlane3D);
    return plane3DSymbol;
  }

  /**
   * Copy the given file from the app's assets folder to the app's cache directory.
   *
   * @param fileName as String
   */
  private void copyFileFromAssetsToCache(String fileName) {
    AssetManager assetManager = getApplicationContext().getAssets();
    File file = new File(getCacheDir() + File.separator + fileName);
    if (!file.exists()) {
      try {
        BufferedInputStream bis = new BufferedInputStream(assetManager.open(fileName));
        BufferedOutputStream bos = new BufferedOutputStream(
            new FileOutputStream(getCacheDir() + File.separator + fileName));
        byte[] buffer = new byte[bis.available()];
        int read = bis.read(buffer);
        while (read != -1) {
          bos.write(buffer, 0, read);
          read = bis.read(buffer);
        }
        bos.close();
        bis.close();
        Log.i(TAG, fileName + " copied to cache.");
      } catch (Exception e) {
        Log.e(TAG, "Error writing " + fileName + " to cache. " + e.getMessage());
      }
    } else {
      Log.i(TAG, fileName + " already in cache.");
    }
  }

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

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

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