Add graphics with renderer

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Sample viewer app

A renderer allows you to change the style of all graphics in a graphics overlay by referencing a single symbol style. A renderer will only effect graphics that do not specify their own symbol style.

Image of adding graphics with renderer

Use case

A renderer allows you to change the style of all graphics in an overlay by only changing one copy of the symbol. For example, a user may wish to display a number of graphics on a map of parkland which represent trees, all sharing a common symbol.

How to use the sample

Run the sample and view graphics for points, lines, and polygons, which are stylized using renderers.

How it works

  1. Create a GraphicsOverlay and add it to the MapView.
  2. Create a Graphic, specifying only a Geometry.
  3. Create a single Symbol such as a SimpleMarkerSymbol.
  4. Create a renderer with the symbol, such as new SimpleRenderer(symbol).
  5. Set the renderer on the graphics overlay with graphicsOverlay.setRenderer(renderer).

Relevant API

  • Geometry
  • Graphic
  • GraphicsOverlay
  • SimpleFillSymbol
  • SimpleLineSymbol
  • SimpleMarkerSymbol
  • SimpleRenderer

Additional information

To set unique symbols across a number of graphics (e.g. showing graphics of individual landmarks) see "Add graphics with symbols" sample.

Tags

display, graphics, marker, overlay, renderer, symbol

Sample Code

AddGraphicsWithRendererSample.java
                                                                                                                                               
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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.add_graphics_with_renderer;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PolygonBuilder;
import com.esri.arcgisruntime.geometry.PolylineBuilder;
import com.esri.arcgisruntime.geometry.SpatialReferences;
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.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class AddGraphicsWithRendererSample 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("Add Graphics with Renderer Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // 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 topographic basemap style
      ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);

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

      // set a viewpoint on the map view
      mapView.setViewpoint(new Viewpoint(15.169193, 16.333479, 1479143818));

      // create a graphics overlay for displaying point graphic
      GraphicsOverlay pointGraphicOverlay = new GraphicsOverlay();
      // create point geometry
      Point point = new Point(40e5, 40e5, SpatialReferences.getWebMercator());
      // create graphic for point
      Graphic pointGraphic = new Graphic(point);
      // red (0xFFFF0000) diamond point symbol
      SimpleMarkerSymbol pointSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.DIAMOND, 0xFFFF0000, 10);
      // create simple renderer
      SimpleRenderer pointRenderer = new SimpleRenderer(pointSymbol);
      // set renderer on graphics overlay
      pointGraphicOverlay.setRenderer(pointRenderer);
      // add graphic to overlay
      pointGraphicOverlay.getGraphics().add(pointGraphic);
      // add graphics overlay to the MapView
      mapView.getGraphicsOverlays().add(pointGraphicOverlay);

      // solid blue (0xFF0000FF) line graphic
      GraphicsOverlay lineGraphicOverlay = new GraphicsOverlay();
      PolylineBuilder lineGeometry = new PolylineBuilder(SpatialReferences.getWebMercator());
      lineGeometry.addPoint(-10e5, 40e5);
      lineGeometry.addPoint(20e5, 50e5);
      Graphic lineGraphic = new Graphic(lineGeometry.toGeometry());
      lineGraphicOverlay.getGraphics().add(lineGraphic);
      SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF0000FF, 5);
      SimpleRenderer lineRenderer = new SimpleRenderer(lineSymbol);
      lineGraphicOverlay.setRenderer(lineRenderer);
      mapView.getGraphicsOverlays().add(lineGraphicOverlay);

      // solid yellow (0xFFFFFF00) polygon graphic
      GraphicsOverlay polygonGraphicOverlay = new GraphicsOverlay();
      PolygonBuilder polygonGeometry = new PolygonBuilder(SpatialReferences.getWebMercator());
      polygonGeometry.addPoint(-20e5, 20e5);
      polygonGeometry.addPoint(20e5, 20e5);
      polygonGeometry.addPoint(20e5, -20e5);
      polygonGeometry.addPoint(-20e5, -20e5);
      Graphic polygonGraphic = new Graphic(polygonGeometry.toGeometry());
      polygonGraphicOverlay.getGraphics().add(polygonGraphic);
      SimpleFillSymbol polygonSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, 0xFFFFFF00, null);
      SimpleRenderer polygonRenderer = new SimpleRenderer(polygonSymbol);
      polygonGraphicOverlay.setRenderer(polygonRenderer);
      mapView.getGraphicsOverlays().add(polygonGraphicOverlay);

      // add the map view to stack pane
      stackPane.getChildren().add(mapView);
    } catch (Exception e) {
      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);
  }
}

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