Show labels on layer in 3D

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
/*
 * Copyright 2021 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.show_labels_on_layer_in_3d;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

import com.esri.arcgisruntime.arcgisservices.LabelingPlacement;
import com.esri.arcgisruntime.arcgisservices.LabelDefinition;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.labeling.ArcadeLabelExpression;
import com.esri.arcgisruntime.mapping.view.SceneView;
import com.esri.arcgisruntime.portal.Portal;
import com.esri.arcgisruntime.portal.PortalItem;
import com.esri.arcgisruntime.symbology.TextSymbol;

public class ShowLabelsOnLayerIn3dSample extends Application {

  private SceneView sceneView;

  @Override
  public void start(Stage stage) {

    try {

      // create stack pane and JavaFX app scene
      StackPane stackPane = new StackPane();
      Scene fxScene = new Scene(stackPane);

      // set title, size, and add the JavaFX scene to stage
      stage.setTitle("Show Labels on Layer in 3D");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(fxScene);
      stage.show();

      // create a scene from an ArcGIS Online portal item
      var portalItem = new PortalItem(
        new Portal("https://www.arcgis.com", false), "850dfee7d30f4d9da0ebca34a533c169");
      ArcGISScene scene = new ArcGISScene(portalItem);

      // set the scene to the sceneview, and add the sceneview to the JavaFX stack pane
      sceneView = new SceneView();
      sceneView.setArcGISScene(scene);
      // create a progress indicator and display it to indicate loading is in progress
      var progressIndicator = new ProgressIndicator();
      progressIndicator.setVisible(true);
      stackPane.getChildren().addAll(sceneView, progressIndicator);

      scene.addDoneLoadingListener(() -> {
        if (scene.getLoadStatus() == LoadStatus.LOADED) {
          // remove the progress indicator when the scene loads
          progressIndicator.setVisible(false);

          // filter through the scene's operational layers to find the layer named "Gas",
          // and find the "Gas Main" sublayer to apply the label definition to
          scene.getOperationalLayers().stream()
            .filter(layer -> layer.getName().equals("Gas"))
            .flatMap(gasLayer -> gasLayer.getSubLayerContents().stream())
            .filter(subLayer -> subLayer.getName().equals("Gas Main"))
            .findFirst()
            .ifPresent(gasMainSubLayer -> {
                FeatureLayer featureLayer = (FeatureLayer) gasMainSubLayer;
                // enable the labelling for the feature layer
                featureLayer.setLabelsEnabled(true);
                // clear any existing label definitions on the layer
                featureLayer.getLabelDefinitions().clear();

                // create a text symbol to set to the label definition
                var textSymbol = new TextSymbol();
                textSymbol.setColor(Color.ORANGE);
                textSymbol.setHaloColor(Color.WHITE);
                textSymbol.setHaloWidth(2);
                textSymbol.setSize(16);

                // create a label definition with an Arcade expression script
                var arcadeLabelExpression = new ArcadeLabelExpression("Text($feature.INSTALLATIONDATE, `DD MMM YY`)");

                var labelDefinition = new LabelDefinition(arcadeLabelExpression, textSymbol);
                labelDefinition.setPlacement(LabelingPlacement.LINE_ABOVE_ALONG);
                labelDefinition.setUseCodedValues(true);

                // add the label definition to the feature layer
                featureLayer.getLabelDefinitions().add(labelDefinition);
            });
        } else {
          new Alert(Alert.AlertType.ERROR, "Scene failed to load " + scene.getLoadError().getCause()).show();
        }
      });
    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Stops and releases all resources used in application.
   */
  @Override
  public void stop() {

    if (sceneView != null) {
      sceneView.dispose();
    }
  }

  /**
   * Opens and runs application.
   *
   * @param args arguments passed to this application
   */
  public static void main(String[] args) {

    Application.launch(args);
  }

}