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/*
* 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.show_location_history;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.Calendar;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Geometry;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.Polyline;
import com.esri.arcgisruntime.geometry.PolylineBuilder;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.location.LocationDataSource;
import com.esri.arcgisruntime.location.LocationDataSource.LocationChangedListener;
import com.esri.arcgisruntime.location.SimulatedLocationDataSource;
import com.esri.arcgisruntime.location.SimulationParameters;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.LocationDisplay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
import com.esri.arcgisruntime.symbology.SimpleRenderer;
import org.apache.commons.io.IOUtils;
public class ShowLocationHistorySample extends Application {
private MapView mapView;
private Point position;
@Override
public void start(Stage stage) {
try {
// create stack pane and application scene
StackPane stackPane = new StackPane();
Scene scene = new Scene(stackPane);
// set title, size, and add scene to stage
stage.setTitle("Show Location History Sample");
stage.setWidth(800);
stage.setHeight(700);
stage.setScene(scene);
stage.show();
scene.getStylesheets().add(getClass().getResource("/show_location_history/style.css").toExternalForm());
// 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 map with the dark gray basemap style
ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_DARK_GRAY);
// create a map view and set the map to it
mapView = new MapView();
mapView.setMap(map);
// set a viewpoint on the map view centered on Los Angeles, California
mapView.setViewpoint(new Viewpoint(new Point(-13185535.98, 4037766.28, SpatialReferences.getWebMercator()), 7000));
// create a label
Label trackingLabel = new Label("Tracking Status: ");
// create a button that toggles the location tracking
ToggleButton trackingButton = new ToggleButton("Start");
trackingButton.maxWidth(Double.MAX_VALUE);
trackingButton.setDisable(true);
// create a graphics overlay for the points and use a red circle for the symbols
GraphicsOverlay locationHistoryOverlay = new GraphicsOverlay();
SimpleMarkerSymbol locationSymbol = new SimpleMarkerSymbol(
SimpleMarkerSymbol.Style.CIRCLE, 0xFFFF0000, 10f);
SimpleRenderer locationHistoryRenderer = new SimpleRenderer(locationSymbol);
locationHistoryOverlay.setRenderer(locationHistoryRenderer);
// create a graphics overlay for the lines connecting the points and use a green line for the symbol
GraphicsOverlay locationHistoryLineOverlay = new GraphicsOverlay();
SimpleLineSymbol locationLineSymbol = new SimpleLineSymbol(
SimpleLineSymbol.Style.SOLID, 0xFF00FF00, 2.0f);
SimpleRenderer locationHistoryLineRenderer = new SimpleRenderer(locationLineSymbol);
locationHistoryLineOverlay.setRenderer(locationHistoryLineRenderer);
// add the graphics overlays to the map view
mapView.getGraphicsOverlays().addAll(Arrays.asList(locationHistoryOverlay, locationHistoryLineOverlay));
// create a polyline builder to connect the location points
PolylineBuilder polylineBuilder = new PolylineBuilder(SpatialReferences.getWebMercator());
// access the json of the location points
String polylineData = IOUtils.toString(getClass().getResourceAsStream("/show_location_history/polyline_data.json"), StandardCharsets.UTF_8);
// create a polyline from the location points
Polyline routePolyline = (Polyline) Geometry.fromJson(polylineData, SpatialReferences.getWebMercator());
// create a simulated location data source
SimulatedLocationDataSource simulatedLocationDataSource = new SimulatedLocationDataSource();
// set the location of the simulated location data source with simulation parameters to set a consistent velocity
simulatedLocationDataSource.setLocations(
routePolyline, new SimulationParameters(Calendar.getInstance(), 30.0, 0.0, 0.0));
// configure the map view's location display to follow the simulated location data source
LocationDisplay locationDisplay = mapView.getLocationDisplay();
locationDisplay.setLocationDataSource(simulatedLocationDataSource);
locationDisplay.setAutoPanMode(LocationDisplay.AutoPanMode.RECENTER);
locationDisplay.setInitialZoomScale(7000);
// create a listener to track the previous location, to draw a route line behind the location display symbol
LocationChangedListener locationChangedListener =
(LocationDataSource.LocationChangedEvent locationChangedEvent) -> {
// reset the old polyline connecting the points
locationHistoryLineOverlay.getGraphics().clear();
// add any previous position to the history
if (position != null) {
// add the new point to the polyline
polylineBuilder.addPoint(position);
// add the new point to the graphics overlay
locationHistoryOverlay.getGraphics().add(new Graphic(position));
}
// store the current position
position = locationChangedEvent.getLocation().getPosition();
// add the updated polyline to the graphics overlay
locationHistoryLineOverlay.getGraphics().add(new Graphic(polylineBuilder.toGeometry()));
};
trackingButton.setOnAction(event -> {
// if the user has panned away from the location display, turn it on again
if (locationDisplay.getAutoPanMode() == LocationDisplay.AutoPanMode.OFF) {
locationDisplay.setAutoPanMode(LocationDisplay.AutoPanMode.RECENTER);
}
// toggle the location tracking when the button is clicked
if (trackingButton.isSelected()) {
simulatedLocationDataSource.addLocationChangedListener(locationChangedListener);
trackingButton.setText("Active");
trackingButton.setStyle("-fx-focus-color: #00ff00;");
} else {
simulatedLocationDataSource.removeLocationChangedListener(locationChangedListener);
trackingButton.setText("Stopped");
trackingButton.setStyle("-fx-focus-color: #f16345;");
}
});
// enable the button interactions when the map is loaded
map.addDoneLoadingListener(() -> {
if (map.getLoadStatus() == LoadStatus.LOADED) {
trackingButton.setDisable(false);
// start the simulated location data source
simulatedLocationDataSource.startAsync();
} else {
new Alert(Alert.AlertType.ERROR, "Map failed to load: " + map.getLoadError().getCause().getMessage()).show();
}
});
// create a control panel and add the label and button UI components
HBox controlsHBox = new HBox();
controlsHBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.3)"), CornerRadii.EMPTY, Insets.EMPTY)));
controlsHBox.setPadding(new Insets(10.0));
controlsHBox.setAlignment(Pos.CENTER);
controlsHBox.setMaxSize(210, 50);
controlsHBox.getStyleClass().add("panel-region");
controlsHBox.getChildren().addAll(trackingLabel, trackingButton);
// add the map view and control panel to the stack pane
stackPane.getChildren().addAll(mapView, controlsHBox);
StackPane.setAlignment(controlsHBox, Pos.TOP_LEFT);
StackPane.setMargin(controlsHBox, new Insets(10, 0, 0, 10));
} 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 (mapView != null) {
mapView.dispose();
}
}
/**
* Opens and runs application.
*
* @param args arguments passed to this application
*/
public static void main(String[] args) {
Application.launch(args);
}
}