Scene property expressions

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/*
 * Copyright 2017 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.scene_properties_expressions;

import javafx.fxml.FXML;
import javafx.scene.control.Slider;
import javafx.scene.paint.Color;

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.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.Camera;
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.SceneView;
import com.esri.arcgisruntime.symbology.SimpleMarkerSceneSymbol;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class ScenePropertiesExpressionsController {

  @FXML private SceneView sceneView;
  @FXML private Slider headingSlider;
  @FXML private Slider pitchSlider;

  public void initialize() {

    // 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 and add a basemap to it
    ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_IMAGERY);

    // add the SceneView to the stack pane
    sceneView.setArcGISScene(scene);

    // add a camera and initial camera position
    Point point = new Point(83.9, 28.4, 1000, SpatialReferences.getWgs84());
    Camera camera = new Camera(point, 1000, 0, 50, 0);
    sceneView.setViewpointCamera(camera);

    // create a graphics overlay
    GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
    graphicsOverlay.getSceneProperties().setSurfacePlacement(LayerSceneProperties.SurfacePlacement.RELATIVE);
    sceneView.getGraphicsOverlays().add(graphicsOverlay);

    // add renderer using rotation expressions
    SimpleRenderer renderer = new SimpleRenderer();
    renderer.getSceneProperties().setHeadingExpression("[HEADING]");
    renderer.getSceneProperties().setPitchExpression("[PITCH]");
    graphicsOverlay.setRenderer(renderer);

    // create a red cone graphic
    SimpleMarkerSceneSymbol coneSymbol = SimpleMarkerSceneSymbol.createCone(Color.RED, 100, 100);
    coneSymbol.setPitch(-90);  // correct symbol's default pitch
    Graphic cone = new Graphic(new Point(83.9, 28.41, 200, SpatialReferences.getWgs84()), coneSymbol);
    graphicsOverlay.getGraphics().add(cone);

    // bind attribute values to sliders
    headingSlider.valueProperty().addListener(o -> cone.getAttributes().put("HEADING", headingSlider.getValue()));
    pitchSlider.valueProperty().addListener(o -> cone.getAttributes().put("PITCH", pitchSlider.getValue()));
  }

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