Create graphics from an XML file with key-value pairs for each graphic, and display the military symbols using a MIL-STD-2525D web style in 2D.
Use case
Use a dictionary renderer on a graphics overlay to display more transient data, such as military messages coming through a local tactical network.
How to use the sample
Run the sample and view the military symbols on the map.
How it works
Create a new DictionarySymbolStyle(portalItem) with a portal item containing a MIL-STD-2525D dictionary web style.
Create a new DictionaryRenderer from the dictionary symbol style.
Create a new GraphicsOverlay.
Set the dictionary renderer to the graphics overlay.
Parse through the local XML file creating a map of key/value pairs for each block of attributes.
Create a Graphic for each attribute.
Use the _wkid key to get the geometry's spatial reference.
Use the _control_points key to get the geometry's shape.
Add the graphic to the graphics overlay.
Relevant API
DictionaryRenderer
DictionarySymbolStyle
GraphicsOverlay
About the data
The dictionary symbol style in this sample is constructed from a portal item containing a MIL-STD-2525D symbol dictionary web style. This ArcGIS Web Style is used to build custom applications that incorporate the MIL-STD-2525D symbol dictionary. This style supports a configuration for modeling locations as ordered anchor points or full geometries.
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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.dictionary_renderer_graphics_overlay;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.File;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Multipoint;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
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.portal.Portal;
import com.esri.arcgisruntime.portal.PortalItem;
import com.esri.arcgisruntime.symbology.DictionaryRenderer;
import com.esri.arcgisruntime.symbology.DictionarySymbolStyle;
publicclassDictionaryRendererGraphicsOverlaySampleextendsApplication{
private MapView mapView;
private GraphicsOverlay graphicsOverlay;
@Overridepublicvoidstart(Stage stage){
try {
// create stack pane and application scenevar stackPane = new StackPane();
var scene = new Scene(stackPane);
// set title, size, and add scene to stage stage.setTitle("Dictionary Renderer Graphics Overlay 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 view mapView = new MapView();
// create a map with the topographic basemap style ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);
graphicsOverlay = new GraphicsOverlay();
// graphics no longer show after zooming passed this scale graphicsOverlay.setMinScale(1000000);
mapView.getGraphicsOverlays().add(graphicsOverlay);
// create the dictionary symbol style from the Joint Military Symbology MIL-STD-2525D portal itemvar portalItem = new PortalItem(new Portal("https://www.arcgis.com/", false), "d815f3bdf6e6452bb8fd153b654c94ca");
var dictionarySymbolStyle = new DictionarySymbolStyle(portalItem);
// add done loading listeners to the map and dictionary symbol style and check they have loaded map.addDoneLoadingListener(() -> {
if (map.getLoadStatus() == LoadStatus.LOADED) {
dictionarySymbolStyle.addDoneLoadingListener(() -> {
if (dictionarySymbolStyle.getLoadStatus() == LoadStatus.LOADED) {
// find the first configuration setting which has the property name "model",// and set its value to "ORDERED ANCHOR POINTS" dictionarySymbolStyle.getConfigurations().stream()
.filter(configuration -> configuration.getName().equals("model"))
.findFirst()
.ifPresent(modelConfiguration -> modelConfiguration.setValue("ORDERED ANCHOR POINTS"));
// create a new dictionary renderer from the dictionary symbol style to render graphics// with symbol dictionary attributes and set it to the graphics overlay renderervar dictionaryRenderer = new DictionaryRenderer(dictionarySymbolStyle);
graphicsOverlay.setRenderer(dictionaryRenderer);
// parse graphic attributes from an XML file following the mil2525d specificationtry {
List<Map<String, Object>> messages = parseMessages();
// create graphics with attributes and add to graphics overlay List<Graphic> graphics = messages.stream()
.map(DictionaryRendererGraphicsOverlaySample::createGraphic)
.collect(Collectors.toList());
graphicsOverlay.getGraphics().addAll(graphics);
// set the viewpoint to the extent of the graphics overlay mapView.setViewpointGeometryAsync(graphicsOverlay.getExtent());
} catch (Exception e) {
e.printStackTrace();
}
} else {
new Alert(Alert.AlertType.ERROR,
"Failed to load symbol style " + dictionarySymbolStyle.getLoadError().getCause().getMessage()).show();
}
});
} else {
new Alert(Alert.AlertType.ERROR, "Map failed to load" + map.getLoadError().getCause().getMessage()).show();
}
// load the dictionary symbol style once the map has loaded dictionarySymbolStyle.loadAsync();
});
// set the map to the map view and add the map view to the stack pane mapView.setMap(map);
stackPane.getChildren().add(mapView);
} catch (Exception ex) {
// on any exception, print the stacktrace ex.printStackTrace();
}
}
/**
* Parses a XML file following the mil2525d specification and creates a message for each block of attributes found.
*/private List<Map<String, Object>> parseMessages() throws Exception {
File mil2525dFile = new File(System.getProperty("data.dir"), "./samples-data/xml/Mil2525DMessages.xml");
var documentBuilderFactory = DocumentBuilderFactory.newInstance();
var documentBuilder = documentBuilderFactory.newDocumentBuilder();
var document = documentBuilder.parse(mil2525dFile);
document.getDocumentElement().normalize();
final List<Map<String, Object>> messages = new ArrayList<>();
for (int i = 0; i < document.getElementsByTagName("message").getLength(); i++) {
Node message = document.getElementsByTagName("message").item(i);
Map<String, Object> attributes = new HashMap<>();
NodeList childNodes = message.getChildNodes();
for (int j = 0; j < childNodes.getLength(); j++) {
attributes.put(childNodes.item(j).getNodeName(), childNodes.item(j).getTextContent());
}
messages.add(attributes);
}
return messages;
}
/**
* Creates a graphic using a symbol dictionary and the attributes that were passed.
*
* @param attributes tells symbol dictionary what symbol to apply to graphic
*/privatestatic Graphic createGraphic(Map<String, Object> attributes){
// get spatial referenceint wkid = Integer.parseInt((String) attributes.get("_wkid"));
SpatialReference sr = SpatialReference.create(wkid);
// get points from the coordinate string in the "_control_points" attribute (delimited with ';') PointCollection points = new PointCollection(sr);
String[] coordinates = ((String) attributes.get("_control_points")).split(";");
Stream.of(coordinates)
.map(cs -> cs.split(","))
.map(c -> new Point(Double.parseDouble(c[0]), Double.parseDouble(c[1]), sr))
.collect(Collectors.toCollection(() -> points));
// return a graphic with multipoint geometryreturnnew Graphic(new Multipoint(points), attributes);
}
/**
* Stops and releases all resources used in application.
*/@Overridepublicvoidstop(){
if (mapView != null) {
mapView.dispose();
}
}
/**
* Opens and runs application.
*
* @param args arguments passed to this application
*/publicstaticvoidmain(String[] args){
Application.launch(args);
}
}