New: multigraph support example

Author: remikey

apps/examples/src/main/java/examples/features/multigraph/MainMultigraph.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2008 - 2019, Arnaud Casteigts and the JBotSim contributors <contact@jbotsim.io>
+ *
+ *
+ * This file is part of JBotSim.
+ *
+ * JBotSim is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * JBotSim is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with JBotSim.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package examples.features.multigraph;
+
+import io.jbotsim.core.Link;
+
+public class MainMultigraph {
+
+    public static void main(String[] args) {
+
+        MultigraphTest multigraphTest = new MultigraphTest(Link.Orientation.UNDIRECTED);
+//        MultigraphTest multigraphTest = new MultigraphTest(Link.Orientation.DIRECTED);
+
+        multigraphTest.run();
+
+    }
+
+}

apps/examples/src/main/java/examples/features/multigraph/MultigraphTest.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright 2008 - 2019, Arnaud Casteigts and the JBotSim contributors <contact@jbotsim.io>
+ *
+ *
+ * This file is part of JBotSim.
+ *
+ * JBotSim is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * JBotSim is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with JBotSim.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package examples.features.multigraph;
+
+import io.jbotsim.core.Link;
+import io.jbotsim.core.Node;
+import io.jbotsim.core.Topology;
+import io.jbotsim.core.event.CommandListener;
+import io.jbotsim.ui.JViewer;
+
+/**
+ * This class shows how JBotSim handles multigraphs
+ */
+public class MultigraphTest {
+    private final Topology topology;
+
+    public MultigraphTest(Link.Orientation orientation) {
+
+        topology = new Topology();
+        topology.setOrientation(orientation);
+
+        Node n1 = addNode(topology, 50, 50);
+        Node n2 = addNode(topology, 80, 50);
+
+        // This link duplicates the automatically generated wireless one
+        Link wirelessLink = new Link(n1, n2, orientation, Link.Mode.WIRELESS);
+        topology.addLink(wirelessLink);
+
+        // This wired link is added twice
+        Link wiredLink = new Link(n1, n2, orientation, Link.Mode.WIRED);
+        topology.addLink(wiredLink);
+        topology.addLink(wiredLink);
+
+        // Another wired link which duplicates the previous one
+        Link wiredLink1 = new Link(n1, n2, orientation, Link.Mode.WIRED);
+        topology.addLink(wiredLink1);
+
+        // Loops
+        topology.addLink(new Link(n1, n1, orientation, Link.Mode.WIRED));
+        topology.addLink(new Link(n1, n1, orientation, Link.Mode.WIRELESS));
+
+        new JViewer(topology);
+
+        addCommandListener(topology);
+        listLinks(topology);
+
+    }
+
+    public void run() {
+        topology.start();
+    }
+
+    private Node addNode(Topology topology, double x, double y) {
+        Node n2 = new Node();
+        n2.setLocation(x, y);
+        topology.addNode(n2);
+        return n2;
+    }
+
+    private void addCommandListener(Topology topology) {
+        String listLinksCommand = "List links";
+        topology.addCommand(listLinksCommand);
+        topology.addCommandListener(new ListLinksCommandListener(listLinksCommand, topology));
+    }
+
+    private class ListLinksCommandListener implements CommandListener {
+        private final String listLinksCommand;
+        private final Topology topology;
+
+        public ListLinksCommandListener(String listLinksCommand, Topology topology) {
+            this.listLinksCommand = listLinksCommand;
+            this.topology = topology;
+        }
+
+        @Override
+        public void onCommand(String command) {
+            if(listLinksCommand.equalsIgnoreCase(command))
+                listLinks(topology);
+        }
+    }
+
+    private static void listLinks(Topology topology) {
+        for (Link link : topology.getLinks())
+            printLink(link);
+        System.out.println();
+    }
+
+    private static void printLink(Link link) {
+        Node source = link.source;
+        Node destination = link.destination;
+        Link.Orientation orientation = link.orientation;
+        String edgeString = (orientation == Link.Orientation.UNDIRECTED)? " <--> " : " --> ";
+        Link.Mode mode = link.mode;
+
+        System.out.println("[" + link.hashCode() + "] " + source + edgeString + destination + " " + mode);
+    }
+}