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/*
* Copyright 2018 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.buffer_list;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Point2D;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Spinner;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;
import com.esri.arcgisruntime.geometry.Geometry;
import com.esri.arcgisruntime.geometry.GeometryEngine;
import com.esri.arcgisruntime.geometry.LinearUnit;
import com.esri.arcgisruntime.geometry.LinearUnitId;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.Polygon;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.ArcGISMapImageLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
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.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
public class BufferListSample extends Application {
private MapView mapView;
@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("Buffer List Sample");
stage.setWidth(800);
stage.setHeight(700);
stage.setScene(scene);
stage.show();
SpatialReference statePlaneNorthCentralTexas = SpatialReference.create(32038);
// show a box where the spatial reference used is valid for planar buffers
List<Point> boundaryPoints = Arrays.asList(
new Point(-103.070, 31.720, SpatialReferences.getWgs84()),
new Point(-103.070, 34.580, SpatialReferences.getWgs84()),
new Point(-94.000, 34.580, SpatialReferences.getWgs84()),
new Point(-94.00, 31.720, SpatialReferences.getWgs84())
);
Polygon boundaryPolygon = (Polygon) GeometryEngine.project(new Polygon(new PointCollection(boundaryPoints)), statePlaneNorthCentralTexas);
// create a blank map with a spatial reference and set an initial viewpoint
ArcGISMap map = new ArcGISMap(statePlaneNorthCentralTexas);
map.setInitialViewpoint(new Viewpoint(boundaryPolygon.getExtent()));
// create an image layer from a service URL (counties, cities, and highways)
ArcGISMapImageLayer mapImageLayer = new ArcGISMapImageLayer("https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer");
// add the image layer to the map's base layers
map.getBasemap().getBaseLayers().add(mapImageLayer);
// create a map view and set the map to it
mapView = new MapView();
mapView.setMap(map);
// show alert if layer fails to load
mapImageLayer.addDoneLoadingListener(() -> {
if (mapImageLayer.getLoadStatus() != LoadStatus.LOADED) {
new Alert(Alert.AlertType.ERROR, "Error loading ArcGIS Map Image Layer.").show();
}
});
// create a graphics overlay to show the spatial reference's valid area
GraphicsOverlay boundaryGraphicsOverlay = new GraphicsOverlay();
mapView.getGraphicsOverlays().add(boundaryGraphicsOverlay);
SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.DASH, Color.RED, 5);
Graphic boundaryGraphic = new Graphic(boundaryPolygon, lineSymbol);
boundaryGraphicsOverlay.getGraphics().add(boundaryGraphic);
GraphicsOverlay bufferGraphicsOverlay = new GraphicsOverlay();
mapView.getGraphicsOverlays().add(bufferGraphicsOverlay);
// create a white cross marker symbol to show where the user clicked
final SimpleMarkerSymbol markerSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CROSS, Color.WHITE, 14);
// create a semi-transparent
final SimpleFillSymbol fillSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.web("fuchsia", 0.5),
new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.RED, 3));
// create a box to hold the input controls
VBox controlsVBox = new VBox(6);
controlsVBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.3)"), CornerRadii.EMPTY,
Insets.EMPTY)));
controlsVBox.setPadding(new Insets(10.0));
controlsVBox.setMaxSize(200, 150);
controlsVBox.getStyleClass().add("panel-region");
// create a spinner to set the buffer size (in miles)
Spinner<Integer> distanceSpinner = new Spinner<>(0, 300, 100);
distanceSpinner.setEditable(true);
controlsVBox.getChildren().add(distanceSpinner);
// set up units to convert from miles to meters
final LinearUnit miles = new LinearUnit(LinearUnitId.MILES);
final LinearUnit meters = new LinearUnit(LinearUnitId.METERS);
// create a checkbox to choose whether to union the buffers into one geometry
CheckBox unionCheckBox = new CheckBox("Union the buffers");
controlsVBox.getChildren().add(unionCheckBox);
// create a button to create the buffer(s)
Button createButton = new Button("Create Buffer(s)");
controlsVBox.getChildren().add(createButton);
// create a button to clear the buffer(s)
Button clearButton = new Button("Clear");
controlsVBox.getChildren().add(clearButton);
// when the user clicks the map, save the clicked location, along with the current distance value
List<Geometry> geometries = new ArrayList<>();
List<Double> distances = new ArrayList<>();
mapView.setOnMouseClicked(e -> {
if (e.isStillSincePress() && e.getButton() == MouseButton.PRIMARY) {
Point2D point2D = new Point2D(e.getX(), e.getY());
Point point = mapView.screenToLocation(point2D);
if (GeometryEngine.contains(boundaryPolygon, point)) {
geometries.add(point);
double distance = miles.convertTo(meters, distanceSpinner.getValue());
distances.add(distance);
// add a marker where the user clicked
Graphic clickedMarker = new Graphic(point, markerSymbol);
bufferGraphicsOverlay.getGraphics().add(clickedMarker);
} else {
Alert alert = new Alert(Alert.AlertType.WARNING, "Location is not valid to buffer using the defined spatial reference.");
alert.initOwner(mapView.getScene().getWindow());
alert.show();
}
}
});
// draw the buffer(s) when the button is clicked
createButton.setOnAction(e -> {
// if the buffers are unioned, only one polygon is returned
if (!geometries.isEmpty() && !distances.isEmpty()) {
List<Polygon> buffers = GeometryEngine.buffer(geometries, distances, unionCheckBox.isSelected());
buffers.forEach(bufferGeometry -> {
Graphic bufferGraphic = new Graphic(bufferGeometry, fillSymbol);
bufferGraphicsOverlay.getGraphics().add(bufferGraphic);
});
}
});
clearButton.setOnAction(e -> {
bufferGraphicsOverlay.getGraphics().clear();
geometries.clear();
distances.clear();
});
// add the map view to the stack pane
stackPane.getChildren().addAll(mapView, controlsVBox);
StackPane.setAlignment(controlsVBox, Pos.TOP_LEFT);
StackPane.setMargin(controlsVBox, 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);
}
}