add a SimpleMarkerSymbol to a Graphic and display it using a GraphicsOverlay. - Java Geographic Information System

Java examples for Geographic Information System:Esri

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Description

add a SimpleMarkerSymbol to a Graphic and display it using a GraphicsOverlay.

Demo Code

/*/*from   w  w w.  jav a 2  s  .  com*/
 * Copyright 2015 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.sampleviewer.samples.symbology;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.Map;
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.mapping.view.Viewpoint;
import com.esri.arcgisruntime.symbology.Color;
import com.esri.arcgisruntime.symbology.RgbColor;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;

/**
 * This sample demonstrates how to add a SimpleMarkerSymbol to a Graphic and
 * display it using a GraphicsOverlay.
 * <p>
 * Adding a {@link Graphic} to a {@link GraphicsOverlay} will make it visible to
 * the user as long as the GraphicsOverlay is set to the MapView and the Graphic
 * has a symbol.
 * <h4>How it Works</h4>
 * 
 * First a GraphicsOverlay needs to be created and added using the
 * {@link MapView#getGraphicsOverlays} method. Then a Graphic can be created
 * using a {@link Point} and a {@link SimpleMarkerSymbol}. Lastly the Graphic
 * needs to be added to the GraphicsOverlay, {@link GraphicsOverlay#getGraphics}
 * .
 */
public class SimpleMarkerSymbolSample extends Application {

    private MapView mapView;

    private static final String SAMPLES_THEME_PATH = "../resources/SamplesTheme.css";

    @Override
    public void start(Stage stage) throws Exception {

        // create stack pane and application scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        scene.getStylesheets()
                .add(getClass().getResource(SAMPLES_THEME_PATH)
                        .toExternalForm());

        // size the stage, add a title, and set scene to stage
        stage.setTitle("Simple Marker Symbol Sample");
        stage.setWidth(800);
        stage.setHeight(700);
        stage.setScene(scene);
        stage.show();

        // create a control panel
        VBox vBoxControl = new VBox(6);
        vBoxControl.setMaxSize(250, 190);
        vBoxControl.getStyleClass().add("panel-region");

        // create sample label and description
        Label descriptionLabel = new Label("Sample Description");
        descriptionLabel.getStyleClass().add("panel-label");
        TextArea description = new TextArea(
                "This sample shows how to add a "
                        + "Simple Marker Symbol to a Graphic and display it using a "
                        + "Graphics Overlay.");
        description.setWrapText(true);
        description.autosize();
        description.setEditable(false);

        // add sample label and description to the control panel
        vBoxControl.getChildren().addAll(descriptionLabel, description);
        try {

            // create map with imagery basemap
            final Map map = new Map(Basemap.createImagery());

            // create spatial reference for WGS 1948
            final SpatialReference webMercator = SpatialReferences
                    .getWebMercator();

            // create a initial viewpoint with a center point and scale
            Point point = new Point(-226773, 6550477, webMercator);
            Viewpoint viewpoint = new Viewpoint(point, 7500);

            // set initial view point to the map
            map.setInitialViewpoint(viewpoint);

            // create a view and set map to it
            mapView = new MapView();
            mapView.setMap(map);

            // create new graphics overlay and add it to the mapview
            GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
            mapView.getGraphicsOverlays().add(graphicsOverlay);

            // create a simple marker symbol
            Color redColor = new RgbColor(255, 0, 0, 255); // red, fully opaque
            SimpleMarkerSymbol symbol = new SimpleMarkerSymbol(redColor,
                    12, SimpleMarkerSymbol.Style.CIRCLE);

            // create a new graphic with a our point and symbol
            Graphic graphic = new Graphic(point, symbol);
            graphicsOverlay.getGraphics().add(graphic);

            // add the map view and control box to stack pane
            stackPane.getChildren().addAll(mapView, vBoxControl);
            StackPane.setAlignment(vBoxControl, Pos.TOP_LEFT);
            StackPane.setMargin(vBoxControl, 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.
     * 
     * @throws Exception if security manager doesn't allow JVM to exit with
     *           current status
     */
    @Override
    public void stop() throws Exception {

        // release resources when the application closes
        if (mapView != null) {
            mapView.dispose();
        }
        Platform.exit();
        System.exit(0);
    }

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

        Application.launch(args);
    }

}

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