Realistic lighting and shadows

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
198
199
200
201
202
203
204
205
206
207
/*
 * Copyright 2020 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.samples.realistic_lighting_and_shadows;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

import javafx.beans.binding.Bindings;
import javafx.fxml.FXML;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.ListCell;
import javafx.scene.control.Slider;
import javafx.util.StringConverter;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.layers.ArcGISSceneLayer;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.ArcGISTiledElevationSource;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Surface;
import com.esri.arcgisruntime.mapping.view.AtmosphereEffect;
import com.esri.arcgisruntime.mapping.view.Camera;
import com.esri.arcgisruntime.mapping.view.LightingMode;
import com.esri.arcgisruntime.mapping.view.SceneView;

public class RealisticLightingAndShadowsController {

  @FXML private SceneView sceneView;
  @FXML private Label timeLabel;
  @FXML private Slider timeSlider;
  @FXML private ComboBox<LightingMode> comboBox;
  private SimpleDateFormat dateFormat;

  public void initialize() {
    try {

      // authentication with an API key or named user is required to access basemaps and other location services
      String yourAPIKey = System.getProperty("apiKey");
      ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);

      // create a scene with a basemap style
      ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_TOPOGRAPHIC);

      // add the scene to the scene view
      sceneView.setArcGISScene(scene);

      // add a base surface with an elevation source to the scene
      Surface surface = new Surface();
      ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource("http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer");
      surface.getElevationSources().add(elevationSource);
      scene.setBaseSurface(surface);

      // add 3D building shells with a scene layer
      ArcGISSceneLayer sceneLayer = new ArcGISSceneLayer("http://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/DevA_BuildingShells/SceneServer/layers/0");
      scene.getOperationalLayers().add(sceneLayer);

      // add a camera and set the scene view's viewpoint to it
      Camera camera = new Camera(45.54605153789073, -122.69033380511073, 941.0002111233771, 162.58544227544266, 60.0,0.0);
      sceneView.setViewpointCamera(camera);

      // set atmosphere effect to realistic
      sceneView.setAtmosphereEffect(AtmosphereEffect.REALISTIC);

      // set a calendar with a date and time
      var calendar = new GregorianCalendar(2018, Calendar.AUGUST, 10, 12, 0, 0);
      calendar.setTimeZone(TimeZone.getTimeZone("PST"));

      // format the string to just return the date and time (hours and minutes)
      dateFormat = new SimpleDateFormat("EEE MMM dd HH:mm");
      dateFormat.setTimeZone(TimeZone.getTimeZone("PST"));

      // set a label to display the formatted date and time
      timeLabel.textProperty().bind(Bindings.createStringBinding(() -> {
        return dateFormat.format(sceneView.sunTimeProperty().getValue().getTime());
      }, sceneView.sunTimeProperty()));

      // set the slider to display tick labels as time strings
      timeSlider.setLabelFormatter(new SliderStringConverter());

      // update the sun position based on the time slider value
      sceneView.sunTimeProperty().bind(Bindings.createObjectBinding(() -> {
        return updateCalendar(timeSlider.valueProperty().getValue().intValue());
      }, timeSlider.valueProperty()));

      // add the lighting modes to the combo box
      comboBox.getItems().addAll(LightingMode.NO_LIGHT, LightingMode.LIGHT, LightingMode.LIGHT_AND_SHADOWS);

      // show the name of the lighting modes in the combo box
      comboBox.setConverter(new ComboBoxStringConverter());
      comboBox.setCellFactory(comboBox -> new LightingModeListCell());

      // bind the sun lighting to the lighting mode chosen from the combo box
      comboBox.valueProperty().bindBidirectional(sceneView.sunLightingProperty());

      // launch the app with lighting mode set to LIGHT_AND_SHADOWS
      comboBox.getSelectionModel().select(2);

    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Creates and returns a calendar from the value of the time slider.
   */
  private Calendar updateCalendar(int sliderValue) {

    // get the hour from the slider
    int hours = sliderValue / 60;

    // get the minutes from the slider
    int minutes = sliderValue % 60;

    // create and set a calendar with the hour and minute values from the slider
    var newCalendar = new GregorianCalendar(2018, Calendar.AUGUST, 10, hours, minutes, 0);
    newCalendar.setTimeZone(TimeZone.getTimeZone("PST"));

    return newCalendar;
  }

  /**
   * Converts the LightingMode values to strings to display in the open ComboBox.
   */
  private class LightingModeListCell extends ListCell<LightingMode> {

    @Override
    protected void updateItem(LightingMode lightingMode, boolean empty) {

      super.updateItem(lightingMode, empty);
      if (lightingMode != null) {
        if (lightingMode == LightingMode.LIGHT) setText("Light");
        else if (lightingMode == LightingMode.LIGHT_AND_SHADOWS) setText("Light and shadows");
        else if (lightingMode == LightingMode.NO_LIGHT) setText("No light");
      }
    }
  }

  /**
   * Converts the LightingMode values to strings to display in the ComboBox.
   */
  private class ComboBoxStringConverter extends StringConverter<LightingMode> {

    @Override
    public String toString(LightingMode lightingMode) {
      if (lightingMode != null) {
        if (lightingMode == LightingMode.LIGHT) return "Light";
        else if (lightingMode == LightingMode.LIGHT_AND_SHADOWS) return "Light and shadows";
        else if (lightingMode == LightingMode.NO_LIGHT) return "No light";
      }
      return "";
    }

    @Override
    public LightingMode fromString(String string) {
      return null;
    }
  }

  /**
   * Converts time values to strings to display on the slider.
   */
  private class SliderStringConverter extends StringConverter<Double> {

    @Override
    public String toString(Double hour) {
      if (hour == 240) return "4am";
      if (hour == 480) return "8am";
      if (hour == 720) return "Midday";
      if (hour == 960) return "4pm";
      if (hour == 1200) return "8pm";

      return "Midnight";
    }

    @Override
    public Double fromString(String string) {
      return null;
    }
  }

  /**
   * Disposes of application resources.
   */
  void terminate() {
    if (sceneView != null) {
      sceneView.dispose();
    }
  }
}