Update.

.gitignore

@@ -0,0 +1,2 @@
+.DS_Store
+bin

src/main/org/insa/algo/AbstractAlgorithm.java

@@ -1,24 +1,42 @@
 package org.insa.algo ;
 
-import java.io.* ;
+import java.util.ArrayList;
 
-public abstract class AbstractAlgorithm {
+public abstract class AbstractAlgorithm implements Runnable {
 
-    protected PrintStream output;
     protected AbstractInstance instance;
     protected AbstractSolution solution;
 
-    /**
-     * 
-     * @param instance
-     * @param logOutput
-     */
-    protected AbstractAlgorithm(AbstractInstance instance, PrintStream logOutput) {
+    protected ArrayList<AbstractObserver> observers;
+    
+    protected AbstractAlgorithm(AbstractInstance instance) {
 		this.instance = instance;
-    		this.output = logOutput;	
+		this.observers = new ArrayList<AbstractObserver>();	
 		this.solution = null;
     }
 
+    protected AbstractAlgorithm(AbstractInstance instance, ArrayList<AbstractObserver> observers) {
+    		this.instance = instance;
+    		this.observers = observers;;	
+    		this.solution = null;
+    }
+    
+    /**
+     * Add an observer to this algorithm.
+     * 
+     * @param observer
+     */
+    public void addObserver(AbstractObserver observer) {
+    		observers.add(observer);
+    }
+    
+    /**
+     * @return The list of observers for this algorithm.
+     */
+    public ArrayList<AbstractObserver> getObservers() {
+    		return observers;
+    }
+    
     /**
      * Update the current solution.
      * 
@@ -44,9 +62,8 @@ public abstract class AbstractAlgorithm {
      * 
      * @return true if a feasible solution was found (even non-optimal).
      */
-    public boolean run() {
+    public void run() {
     		this.solution = this.doRun();
-    		return this.solution != null && this.solution.isFeasible();
     }
     
     /**

src/main/org/insa/algo/AbstractObserver.java

@@ -0,0 +1,20 @@
+package org.insa.algo;
+
+public abstract class AbstractObserver {
+	
+	// Specify if the observer is graphic or not.
+	private final boolean isgraphic;
+	
+	protected AbstractObserver(boolean isGraphic) {
+		this.isgraphic = isGraphic;
+	}
+	
+	/**
+	 * @return true if this observer is graphic (use drawing to display
+	 * information).
+	 */
+	public boolean isGraphic() {
+		return isgraphic;
+	}
+	
+}

src/main/org/insa/algo/connectivity/ConnectivityAlgorithm.java

@@ -1,30 +0,0 @@
-package org.insa.algo.connectivity ;
-
-import java.io.* ;
-
-import org.insa.algo.AbstractAlgorithm;
-import org.insa.algo.AbstractSolution;
-
-public class ConnectivityAlgorithm extends AbstractAlgorithm {
-
-	/**
-	 * 
-	 * @param instance
-	 * @param logOutput
-	 */
-	public ConnectivityAlgorithm(ConnectivityInstance instance, PrintStream logOutput) {
-		super(instance, logOutput);
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	protected AbstractSolution doRun() {
-		ConnectivityInstance instance = (ConnectivityInstance)getInstance();
-		ConnectivitySolution solution = null;
-		// TODO: 
-		return solution;
-	}
-
-}

src/main/org/insa/algo/connectivity/ConnectivityInstance.java

@@ -1,16 +0,0 @@
-package org.insa.algo.connectivity;
-
-import org.insa.algo.AbstractInstance;
-import org.insa.graph.Graph;
-
-public class ConnectivityInstance extends AbstractInstance {
-
-	/**
-	 * 
-	 * @param graph
-	 */
-	public ConnectivityInstance(Graph graph) {
-		super(graph);
-	}
-
-}

src/main/org/insa/algo/connectivity/ConnectivitySolution.java

@@ -1,20 +0,0 @@
-package org.insa.algo.connectivity;
-
-import java.time.Duration;
-
-import org.insa.algo.AbstractSolution;
-
-public class ConnectivitySolution extends AbstractSolution {
-
-	protected ConnectivitySolution(ConnectivityInstance instance) {
-		super(instance);
-	}
-	
-	protected ConnectivitySolution(ConnectivityInstance instance, 
-					   Duration solvingTime, Status status) {
-		super(instance, solvingTime, status);
-		
-		// TODO:
-	}
-
-}

src/main/org/insa/algo/strongconnectivity/StronglyConnectedComponentsAlgorithm.java

@@ -0,0 +1,16 @@
+package org.insa.algo.strongconnectivity ;
+
+import org.insa.algo.AbstractAlgorithm;
+
+public abstract class StronglyConnectedComponentsAlgorithm extends AbstractAlgorithm {
+
+	/**
+	 * 
+	 * @param instance
+	 * @param logOutput
+	 */
+	public StronglyConnectedComponentsAlgorithm(StronglyConnectedComponentsInstance instance) {
+		super(instance);
+	}
+
+}

src/main/org/insa/algo/strongconnectivity/StronglyConnectedComponentsInstance.java

@@ -0,0 +1,16 @@
+package org.insa.algo.strongconnectivity;
+
+import org.insa.algo.AbstractInstance;
+import org.insa.graph.Graph;
+
+public class StronglyConnectedComponentsInstance extends AbstractInstance {
+
+	/**
+	 * 
+	 * @param graph
+	 */
+	public StronglyConnectedComponentsInstance(Graph graph) {
+		super(graph);
+	}
+	
+}

src/main/org/insa/algo/strongconnectivity/StronglyConnectedComponentsSolution.java

@@ -0,0 +1,29 @@
+package org.insa.algo.strongconnectivity;
+
+import java.time.Duration;
+import java.util.ArrayList;
+
+import org.insa.algo.AbstractSolution;
+import org.insa.graph.Node;
+
+public class StronglyConnectedComponentsSolution extends AbstractSolution {
+	
+	// Components
+	private ArrayList<ArrayList<Node>> components;
+
+	protected StronglyConnectedComponentsSolution(StronglyConnectedComponentsInstance instance) {
+		super(instance);
+	}
+	
+	protected StronglyConnectedComponentsSolution(StronglyConnectedComponentsInstance instance, 
+					   Duration solvingTime, Status status, ArrayList<ArrayList<Node>> components) {
+		super(instance, solvingTime, status);
+		this.components = components;
+	}
+	
+	/**
+	 * @return Components of the solution, if any.
+	 */
+	public ArrayList<ArrayList<Node>> getComponents() { return components; }
+
+}

src/main/org/insa/algo/strongconnectivity/TarjanAlgorithm.java

@@ -0,0 +1,155 @@
+package org.insa.algo.strongconnectivity;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Stack;
+
+import org.insa.algo.AbstractSolution;
+import org.insa.algo.AbstractSolution.Status;
+import org.insa.graph.Arc;
+import org.insa.graph.Graph;
+import org.insa.graph.Node;
+
+public class TarjanAlgorithm extends StronglyConnectedComponentsAlgorithm {
+	
+	private final static int UNDEFINED = -1;
+
+	// Stack of nodes and flags.
+	private Stack<Node> stack;
+	private boolean[] inStack;
+	
+	// Current index.
+	private int index;
+	
+	// Information of nodes
+	private int[] indexes;
+	private int[] lowlink;	
+	
+	// Array of strongly connected components
+	ArrayList<ArrayList<Node>> components;
+
+	public TarjanAlgorithm(StronglyConnectedComponentsInstance instance) {
+		super(instance);
+	}
+	
+	/**
+	 * Push the given node to the stack.
+	 * 
+	 * @param node
+	 */
+	protected void pushNode(Node node) {
+		stack.push(node);
+		inStack[node.getId()] = true;
+	}
+	
+	/**
+	 * Pop and return a node from the stack.
+	 * 
+	 * @return Node popped from the stack
+	 */
+	protected Node popNode() {
+		Node top = stack.pop();
+		inStack[top.getId()] = false;
+		return top;
+	}
+	
+	/**
+	 * Check if the given node is in the stack.
+	 * 
+	 * @param node
+	 * 
+	 * @return true if the given node is in the stack, false otherwize.
+	 */
+	protected boolean isInStack(Node node) {
+		return inStack[node.getId()];
+	}
+	
+	/**
+	 * Find the strong component containing the given node.
+	 * 
+	 * @param node 
+	 * 
+	 * @return The strong component containing the given node.
+	 */
+	protected void findAndAddStrongComponent(Node v) {
+		Graph graph = getInstance().getGraph();
+		
+		// Update node info, index and push the node.
+		indexes[v.getId()] = index;
+		lowlink[v.getId()] = index;
+		index += 1;
+		pushNode(v);
+		
+		for (Arc a: v.getSuccessors()) {
+			Node w = a.getDestination();
+			if (!hasBeenVisited(w)) {
+				findAndAddStrongComponent(w);
+				lowlink[v.getId()] = Math.min(lowlink[v.getId()], lowlink[w.getId()]);
+			}
+			else if (isInStack(w)) {
+				lowlink[v.getId()] = Math.min(lowlink[v.getId()], indexes[w.getId()]);
+			}
+		}
+		
+		// Compute the component (if any)
+		if (lowlink[v.getId()] == indexes[v.getId()]) {
+			ArrayList<Node> component = new ArrayList<Node>();
+			Node w;
+			do {
+				w = popNode();
+				component.add(w);
+			} while (!w.equals(v));
+			components.add(component);
+			System.out.println("Size of the stack: " + stack.size());
+		}
+				
+	}
+	
+	/**
+	 * Check if the given node has not been visited yet.
+	 * 
+	 * @return true if the node has been visited.
+	 */
+	protected boolean hasBeenVisited(Node node) { 
+		return this.indexes[node.getId()] != UNDEFINED;
+	}
+
+	@Override
+	protected AbstractSolution doRun() {
+		Graph graph = getInstance().getGraph();
+		
+		components = new ArrayList<ArrayList<Node>>();
+		
+		// Starting time...
+		Instant start = Instant.now();
+		
+		// Initialize everything
+		final int nbNodes = graph.getNodes().size();
+		stack = new Stack<Node>();
+		inStack = new boolean[nbNodes];
+		
+		// Current index.
+		index = 0;
+		
+		// Information of nodes
+		indexes = new int[nbNodes];
+		Arrays.fill(indexes, UNDEFINED);
+		lowlink = new int[nbNodes];
+		
+		// Find components
+		for (Node node: graph.getNodes()) {
+			if (!hasBeenVisited(node)) {
+				findAndAddStrongComponent(node);
+			}
+		}
+
+		// Duration...
+		Duration solvingTime = Duration.between(start, Instant.now());
+		
+		return new StronglyConnectedComponentsSolution((StronglyConnectedComponentsInstance)getInstance(),
+					   solvingTime, Status.OPTIMAL, components);
+	}
+
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentGraphicObserver.java

@@ -0,0 +1,46 @@
+package org.insa.algo.weakconnectivity;
+
+import java.awt.Color;
+import java.util.ArrayList;
+
+import org.insa.drawing.Drawing;
+import org.insa.drawing.graph.GraphDrawing;
+import org.insa.graph.Node;
+
+public class WeaklyConnectedComponentGraphicObserver extends WeaklyConnectedComponentObserver {
+	
+	private static final Color[] COLORS = {
+		Color.BLUE, Color.ORANGE, Color.GREEN, Color.YELLOW, Color.RED
+	};
+
+	// Drawing + Graph drawing
+	private Drawing drawing;
+	private GraphDrawing gdrawing;
+	
+	// Current index color
+	private int cindex = 0;
+	
+	public WeaklyConnectedComponentGraphicObserver(Drawing drawing) {
+		super(true);
+		this.drawing = drawing;
+		this.gdrawing = new GraphDrawing(drawing);
+		this.drawing.setAutoRepaint(true);
+	}
+
+	@Override
+	public void notifyStartComponent(Node curNode) {
+		this.drawing.setColor(COLORS[cindex]);
+		cindex = (cindex + 1) % COLORS.length;
+	}
+
+	@Override
+	public void notifyNewNodeInComponent(Node node) {
+		this.gdrawing.drawPoint(node.getPoint(), 5);
+		this.drawing.repaint();
+	}
+
+	@Override
+	public void notifyEndComponent(ArrayList<Node> nodes) {
+	}
+
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentObserver.java

@@ -0,0 +1,38 @@
+package org.insa.algo.weakconnectivity;
+
+import java.util.ArrayList;
+
+import org.insa.algo.AbstractObserver;
+import org.insa.graph.Node;
+
+public abstract class WeaklyConnectedComponentObserver extends AbstractObserver {
+
+	/**
+	 * {@inheritDoc}
+	 */
+	protected WeaklyConnectedComponentObserver(boolean isGraphic) {
+		super(isGraphic);
+	}
+	
+	/**
+	 * Notify that the algorithm is entering a new component.
+	 * 
+	 * @param curNode Starting node for the component.
+	 */
+	public abstract void notifyStartComponent(Node curNode);
+	
+	/**
+	 * Notify that a new node has been found for the current component.
+	 * 
+	 * @param node New node found for the current component.
+	 */
+	public abstract void notifyNewNodeInComponent(Node node);
+	
+	/**
+	 * Notify that the algorithm has computed a new component.
+	 * 
+	 * @param nodes List of nodes in the component.
+	 */
+	public abstract void notifyEndComponent(ArrayList<Node> nodes);
+
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentTextObserver.java

@@ -0,0 +1,37 @@
+package org.insa.algo.weakconnectivity;
+
+import java.io.PrintStream;
+import java.util.ArrayList;
+
+import org.insa.graph.Node;
+
+public class WeaklyConnectedComponentTextObserver extends WeaklyConnectedComponentObserver {
+	
+	// Number of the current component.
+	private int numComponent = 1;
+	
+	// Output stream
+	PrintStream stream;
+
+	public WeaklyConnectedComponentTextObserver(PrintStream stream) {
+		super(false);
+		this.stream = stream;
+	}
+
+	@Override
+	public void notifyStartComponent(Node curNode) {
+		stream.print("Entering component #" + numComponent + " from node #" + curNode.getId() + "... ");
+	}
+
+	@Override
+	public void notifyNewNodeInComponent(Node node) {
+	}
+
+	@Override
+	public void notifyEndComponent(ArrayList<Node> nodes) {
+		stream.println(nodes.size() + " nodes found.");
+		stream.flush();
+		numComponent += 1;
+	}
+
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentsAlgorithm.java

@@ -0,0 +1,127 @@
+package org.insa.algo.weakconnectivity;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.HashSet;
+
+import org.insa.algo.AbstractAlgorithm;
+import org.insa.algo.AbstractObserver;
+import org.insa.algo.AbstractSolution;
+import org.insa.algo.AbstractSolution.Status;
+import org.insa.graph.Arc;
+import org.insa.graph.Graph;
+import org.insa.graph.Node;
+
+public class WeaklyConnectedComponentsAlgorithm extends AbstractAlgorithm {
+
+	/**
+	 * 
+	 * @param instance
+	 * @param logOutput
+	 */
+	public WeaklyConnectedComponentsAlgorithm(WeaklyConnectedComponentsInstance instance) {
+		super(instance);
+	}
+	
+	/**
+	 * @return An adjacency list for the undirected graph equivalent to the stored graph.
+	 */
+	protected ArrayList<HashSet<Integer>> createUndirectedGraph() {
+		int nNodes = getInstance().getGraph().getNodes().size();
+		ArrayList<HashSet<Integer>> res = new ArrayList<HashSet<Integer>>(nNodes);
+		for (int i = 0; i < nNodes; ++i) {
+			res.add(new HashSet<Integer>());
+		}		
+		
+		for (Node node: getInstance().getGraph().getNodes()) {
+			for (Arc arc: node.getSuccessors()) {
+				res.get(node.getId()).add(arc.getDestination().getId());
+				if (arc.getInfo().isOneWay()) {
+					res.get(arc.getDestination().getId()).add(node.getId());
+				}
+			}
+		}
+		
+		return res;
+	}
+	
+	/**
+	 * Apply a breadth first search algorithm on the given undirected graph (adjacency list),
+	 * starting at node cur, and marking nodes in marked.
+	 * 
+	 * @param marked
+	 * @param cur
+	 * 
+	 * @return
+	 */
+	protected ArrayList<Node> bfs(ArrayList<HashSet<Integer>> ugraph, boolean[] marked, int cur) {
+		ArrayList<Node> nodes = getInstance().getGraph().getNodes();
+		ArrayList<Node> component = new ArrayList<Node>();
+		
+		// Using a queue because we are doing a BFS
+		Queue<Integer> queue = new LinkedList<Integer>();
+
+		for (AbstractObserver obs: getObservers()) {
+			((WeaklyConnectedComponentObserver)obs).notifyStartComponent(nodes.get(cur));
+		}
+		
+		// Add original node and loop until the queue is empty.
+		queue.add(cur);
+		marked[cur] = true;
+		while (!queue.isEmpty()) {
+			Node node = nodes.get(queue.remove());
+			component.add(node);
+			
+			// notify observers
+			for (AbstractObserver obs: getObservers()) ((WeaklyConnectedComponentObserver)obs).notifyNewNodeInComponent(node);
+			
+			for (Integer destId: ugraph.get(node.getId())) {
+				Node dest = nodes.get(destId);
+				if (!marked[dest.getId()]) {
+					queue.add(destId);
+					marked[destId] = true;
+				}
+			}
+		}
+		
+		for (AbstractObserver obs: getObservers()) {
+			((WeaklyConnectedComponentObserver)obs).notifyEndComponent(component);
+		}
+		
+		return component;
+	}
+
+	@Override
+	protected AbstractSolution doRun() {
+		
+		Instant start = Instant.now();
+
+		Graph graph = getInstance().getGraph();
+		ArrayList<HashSet<Integer>> ugraph = createUndirectedGraph();
+		boolean[] marked = new boolean[graph.getNodes().size()];
+		Arrays.fill(marked, false);
+		
+		ArrayList<ArrayList<Node>> components = new ArrayList<ArrayList<Node>>();
+		
+		// perform algorithm
+		int cur = 0;
+		while (cur < marked.length) {
+			// Apply BFS
+			components.add(this.bfs(ugraph, marked, cur));
+			
+			// Find next non-marked
+			for (; cur < marked.length && marked[cur]; ++cur);
+		}
+		
+		Duration solvingTime = Duration.between(start, Instant.now());
+		
+		return new WeaklyConnectedComponentsSolution((WeaklyConnectedComponentsInstance)getInstance(), 
+				solvingTime, Status.OPTIMAL, components);
+	}
+
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentsInstance.java

@@ -0,0 +1,16 @@
+package org.insa.algo.weakconnectivity;
+
+import org.insa.algo.AbstractInstance;
+import org.insa.graph.Graph;
+
+public class WeaklyConnectedComponentsInstance extends AbstractInstance {
+
+	/**
+	 * 
+	 * @param graph
+	 */
+	public WeaklyConnectedComponentsInstance(Graph graph) {
+		super(graph);
+	}
+	
+}

src/main/org/insa/algo/weakconnectivity/WeaklyConnectedComponentsSolution.java

@@ -0,0 +1,29 @@
+package org.insa.algo.weakconnectivity;
+
+import java.time.Duration;
+import java.util.ArrayList;
+
+import org.insa.algo.AbstractSolution;
+import org.insa.graph.Node;
+
+public class WeaklyConnectedComponentsSolution extends AbstractSolution {
+	
+	// Components
+	private ArrayList<ArrayList<Node>> components;
+
+	protected WeaklyConnectedComponentsSolution(WeaklyConnectedComponentsInstance instance) {
+		super(instance);
+	}
+	
+	protected WeaklyConnectedComponentsSolution(WeaklyConnectedComponentsInstance instance, 
+					   Duration solvingTime, Status status, ArrayList<ArrayList<Node>> components) {
+		super(instance, solvingTime, status);
+		this.components = components;
+	}
+	
+	/**
+	 * @return Components of the solution, if any.
+	 */
+	public ArrayList<ArrayList<Node>> getComponents() { return components; }
+
+}

src/main/org/insa/base/Couleur.java

@@ -1,58 +0,0 @@
-package org.insa.base ;
-
-/**
- *   Choix des couleurs pour l'affichage.
- */
-
-import java.awt.* ;
-
-import org.insa.drawing.Drawing;
-
-public class Couleur {
-
-    static final Color autoroute = Color.red ;
-    static final Color bigroute = new Color(255, 105, 0) ;
-    static final Color tiroute = new Color(255, 234, 0) ;
-    static final Color cote = Color.blue ;
-
-    public static void set(Drawing d, char type) {
-
-	// Voir le fichier Descripteur.java pour le type des routes.
-	switch (type) {
-	case 'a':
-	    d.setWidth(2) ;
-	    d.setColor(Color.red) ;
-	    break ;
-
-	case 'b':
-	case 'c':
-	case 'd':
-	case 'e':
-	case 'f':
-	case 'g':
-	    d.setWidth(1) ;
-	    d.setColor(bigroute) ;
-	    break ;
-	case 'h':
-	case 'i':
-	case 'j':
-	case 'k':
-	case 'l':
-	case 'm':
-	case 'n':
-	case 'o':
-	    d.setWidth(1) ;
-	    d.setColor(tiroute) ;
-	    break ;
-	    
-	case 'z':
-	    d.setWidth(4) ;
-	    d.setColor(cote) ;
-	    break ;
-	    
-	default:
-	    d.setWidth(1) ;
-	    d.setColor(Color.black) ;
-	}
-    }
-}

src/main/org/insa/base/MainWindow.java

@@ -0,0 +1,340 @@
+package org.insa.base;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.util.ArrayList;
+
+import javax.swing.BorderFactory;
+import javax.swing.BoxLayout;
+import javax.swing.JFileChooser;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JSplitPane;
+import javax.swing.JTextArea;
+import javax.swing.KeyStroke;
+import javax.swing.SwingConstants;
+import javax.swing.filechooser.FileNameExtensionFilter;
+
+import org.insa.algo.weakconnectivity.WeaklyConnectedComponentGraphicObserver;
+import org.insa.algo.weakconnectivity.WeaklyConnectedComponentTextObserver;
+import org.insa.algo.weakconnectivity.WeaklyConnectedComponentsAlgorithm;
+import org.insa.algo.weakconnectivity.WeaklyConnectedComponentsInstance;
+import org.insa.drawing.DrawingVisible;
+import org.insa.drawing.graph.BlackAndWhiteGraphPalette;
+import org.insa.drawing.graph.GraphDrawing;
+import org.insa.drawing.graph.PathDrawing;
+import org.insa.graph.Graph;
+import org.insa.graph.Path;
+import org.insa.graph.io.BinaryGraphReader;
+import org.insa.graph.io.BinaryPathReader;
+import org.insa.graph.io.MapMismatchException;
+import org.insa.graph.io.Openfile;
+
+import com.sun.glass.events.KeyEvent;
+
+public class MainWindow extends JFrame {
+	
+	public class JOutputStream extends OutputStream {
+	    private JTextArea textArea;
+
+	    public JOutputStream(JTextArea textArea) {
+	        this.textArea = textArea;
+	    }
+
+	    @Override
+	    public void write(int b) throws IOException {
+	        // redirects data to the text area
+	    		textArea.setText(textArea.getText() + String.valueOf((char)b));
+	        // scrolls the text area to the end of data
+	        textArea.setCaretPosition(textArea.getDocument().getLength());
+	        // keeps the textArea up to date
+	        textArea.update(textArea.getGraphics());
+	    }
+	}
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -527660583705140687L;
+	
+	/**
+	 * 
+	 */
+	private static final String WINDOW_TITLE = "BE Graphes INSA";
+	
+	/**
+	 * 
+	 */
+	private static final Dimension DEFAULT_DIMENSION = new Dimension(800, 600);
+	
+	// Current graph.
+	private Graph graph;
+	
+	// Current loaded path.
+	private Path currentPath;
+	
+	// List of item for the top menus.
+	private JMenuItem openMapItem;
+	
+	// List of items that cannot be used without a graph
+	private ArrayList<JMenuItem> graphItems = new ArrayList<JMenuItem>();
+	
+	// Label containing the map ID of the current graph.
+	private JLabel mapIdPanel;
+	
+	// Log stream and print stream
+	private JOutputStream logStream;
+	private PrintStream printStream;
+	
+	/**
+	 * 
+	 */
+	private DrawingVisible drawing;
+	
+	public MainWindow() {
+		super(WINDOW_TITLE);
+		setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
+		setLayout(new BorderLayout());
+		setSize(DEFAULT_DIMENSION);
+		setJMenuBar(createMenuBar());
+		
+		addWindowListener(new WindowAdapter() {
+			public void windowClosing(WindowEvent e) {
+				int confirmed = JOptionPane.showConfirmDialog(null, 
+						"Are you sure you want to close the application?", "Exit Confirmation",
+						JOptionPane.YES_NO_OPTION);
+
+				if (confirmed == JOptionPane.YES_OPTION) {
+					dispose();
+					System.exit(0);
+				}
+			}
+		});
+		
+		// Create graph area
+		JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
+				
+		drawing = new DrawingVisible();
+		drawing.setBackground(Color.WHITE);
+		
+		JTextArea infoPanel = new JTextArea();
+		infoPanel.setMinimumSize(new Dimension(200, 50));
+		// infoPanel.setBorder(BorderFactory.createMatteBorder(0, 1, 0, 0, Color.GRAY));
+		infoPanel.setBackground(Color.WHITE);
+		infoPanel.setLineWrap(true);
+		infoPanel.setEditable(false);
+		this.logStream = new JOutputStream(infoPanel);
+		this.printStream = new PrintStream(this.logStream);
+		
+        sp.setResizeWeight(0.8);
+        // sp.setEnabled(false);
+        sp.setDividerSize(5);
+        
+        sp.setBackground(Color.WHITE);
+		sp.add(drawing);
+		sp.add(new JScrollPane(infoPanel));		
+		this.add(sp, BorderLayout.CENTER);
+				
+		this.add(createStatusBar(), BorderLayout.SOUTH);
+	}
+	
+	private JMenuBar createMenuBar() {
+
+		// Open Map item...
+		openMapItem = new JMenuItem("Open Map... ",
+		                         KeyEvent.VK_O);
+		openMapItem.setAccelerator(KeyStroke.getKeyStroke(
+		        KeyEvent.VK_O, ActionEvent.ALT_MASK));
+		openMapItem.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				JFileChooser chooser = new JFileChooser();
+			    FileNameExtensionFilter filter = new FileNameExtensionFilter(
+			        "Map & compressed map files", "map", "map.gz");
+			    chooser.setCurrentDirectory(new File(System.getProperty("user.dir")));
+			    chooser.setFileFilter(filter);
+			    if (chooser.showOpenDialog(MainWindow.this) == JFileChooser.APPROVE_OPTION) {
+			    		BinaryGraphReader reader;
+					try {
+						reader = new BinaryGraphReader(
+								Openfile.open(chooser.getSelectedFile().getAbsolutePath()));
+					} catch (IOException e1) {
+						JOptionPane.showMessageDialog(MainWindow.this, "Cannot open the selected file.");
+						return ;
+					}
+			    		try {
+			    			graph = reader.read();
+			    		}
+			    		catch (Exception exception) {
+						JOptionPane.showMessageDialog(MainWindow.this, "Unable to read graph from the selected file.");
+						return ;
+			    		}
+			    		drawing.clear();
+			    		new GraphDrawing(drawing).drawGraph(graph);
+			    		
+			    		for (JMenuItem item: graphItems) {
+			    			item.setEnabled(true);
+			    		}
+			    		mapIdPanel.setText("Map ID: 0x" + Integer.toHexString(graph.getMapId()));
+			    }
+			}
+		});
+		
+		// Open Path item...
+		JMenuItem openPathItem = new JMenuItem("Open Path... ", KeyEvent.VK_P);
+		openPathItem.setAccelerator(KeyStroke.getKeyStroke(
+		        KeyEvent.VK_P, ActionEvent.ALT_MASK));
+		openPathItem.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				JFileChooser chooser = new JFileChooser();
+			    FileNameExtensionFilter filter = new FileNameExtensionFilter(
+			        "Path & compressed path files", "path", "path.gz");
+			    chooser.setCurrentDirectory(new File(System.getProperty("user.dir")));
+			    chooser.setFileFilter(filter);
+			    if (chooser.showOpenDialog(MainWindow.this) == JFileChooser.APPROVE_OPTION) {
+			    		BinaryPathReader reader;
+					try {
+						reader = new BinaryPathReader(
+								Openfile.open(chooser.getSelectedFile().getAbsolutePath()));
+					} catch (IOException e1) {
+						JOptionPane.showMessageDialog(MainWindow.this, "Cannot open the selected file.");
+						return ;
+					}
+			    		try {
+			    			currentPath = reader.readPath(graph);
+			    		}
+			    		catch (MapMismatchException exception) {
+			    			JOptionPane.showMessageDialog(MainWindow.this, "The selected file does not contain a path for the current graph.");
+			    			return;
+			    		}
+			    		catch (Exception exception) {
+						JOptionPane.showMessageDialog(MainWindow.this, "Unable to read path from the selected file.");
+						return ;
+			    		}
+			    		new PathDrawing(drawing).drawPath(currentPath);
+			    }
+			}
+		});
+		graphItems.add(openPathItem);
+		
+		// Close item
+		JMenuItem closeItem = new JMenuItem("Quit", KeyEvent.VK_Q);
+		closeItem.setAccelerator(KeyStroke.getKeyStroke(
+				KeyEvent.VK_Q, ActionEvent.ALT_MASK));
+		closeItem.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				MainWindow.this.dispatchEvent(new WindowEvent(MainWindow.this, WindowEvent.WINDOW_CLOSING));
+			}
+		});
+
+		//Build the first menu.
+		JMenu fileMenu = new JMenu("File");
+		fileMenu.add(openMapItem);
+		fileMenu.add(openPathItem);
+		fileMenu.addSeparator();
+		fileMenu.add(closeItem);
+		
+		// Second menu
+		JMenuItem drawGraphItem = new JMenuItem("Redraw", KeyEvent.VK_R);
+		drawGraphItem.setAccelerator(KeyStroke.getKeyStroke(
+				KeyEvent.VK_R, ActionEvent.ALT_MASK));
+		drawGraphItem.addActionListener(new ActionListener() {		
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				drawing.clear();
+				drawing.setAutoRepaint(true);
+				new GraphDrawing(drawing).drawGraph(graph);
+				drawing.setAutoRepaint(false);
+			}
+		});
+		graphItems.add(drawGraphItem);
+		JMenuItem drawGraphBWItem = new JMenuItem("Redraw (B&W)", KeyEvent.VK_B);
+		drawGraphBWItem.setAccelerator(KeyStroke.getKeyStroke(
+				KeyEvent.VK_B, ActionEvent.ALT_MASK));
+		drawGraphBWItem.addActionListener(new ActionListener() {		
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				drawing.clear();
+				drawing.setAutoRepaint(true);
+				new GraphDrawing(drawing, new BlackAndWhiteGraphPalette()).drawGraph(graph);
+				drawing.setAutoRepaint(false);
+			}
+		});
+		graphItems.add(drawGraphBWItem);
+		
+		JMenu graphMenu = new JMenu("Graph");
+		graphMenu.add(drawGraphItem);
+		graphMenu.add(drawGraphBWItem);
+		
+		// Algo menu
+		JMenu algoMenu = new JMenu("Algorithms");
+		
+		JMenuItem wccItem = new JMenuItem("Weakly Connected Components");
+		wccItem.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+
+				WeaklyConnectedComponentsInstance instance = new WeaklyConnectedComponentsInstance(graph);
+				WeaklyConnectedComponentsAlgorithm algo = new WeaklyConnectedComponentsAlgorithm(instance);
+				algo.addObserver(new WeaklyConnectedComponentGraphicObserver(drawing));
+				
+				(new Thread(algo)).start();
+			}
+		});
+		graphItems.add(wccItem);
+		
+		algoMenu.add(wccItem);
+		
+		// Create the menu bar.
+		JMenuBar menuBar = new JMenuBar();
+		
+		menuBar.add(fileMenu);
+		menuBar.add(graphMenu);
+		menuBar.add(algoMenu);
+
+		for (JMenuItem item: graphItems) {
+			item.setEnabled(false);
+		}
+		
+		return menuBar;
+	}
+	
+	private JPanel createStatusBar() {
+		// create the status bar panel and shove it down the bottom of the frame
+		JPanel statusPanel = new JPanel();
+		statusPanel.setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, Color.GRAY));
+		statusPanel.setPreferredSize(new Dimension(getWidth(), 20));
+		statusPanel.setLayout(new BoxLayout(statusPanel, BoxLayout.X_AXIS));
+		
+		mapIdPanel = new JLabel();
+		mapIdPanel.setHorizontalAlignment(SwingConstants.LEFT);
+		statusPanel.add(mapIdPanel);
+
+		return statusPanel;
+	}
+	
+	public static void main(final String[] args) {
+		MainWindow w = new MainWindow();
+		w.setExtendedState(JFrame.MAXIMIZED_BOTH);
+		w.setVisible(true);
+	}
+	
+
+}

src/main/org/insa/base/Openfile.java

@@ -1,115 +0,0 @@
-package org.insa.base ;
-
-import java.io.* ;
-import java.util.zip.* ;
-
-/* Ne lisez pas cette classe. Lancez javadoc et lisez la doc generee plutot. */
-
-/**
- *  La classe Openfile permet de lire les fichiers contenant les cartes :
- *   <ul>
- *    <li> en trouvant le bon dossier parmi les dossiers pre-configures </li>
- *    <li> en dezippant automatiquement si besoin </li>
- *   </ul>
- *
- */
-public class Openfile {
-
-    // Le programme examine chaque dossier dans l'ordre jusqu'a trouver celui qui contient la carte voulue
-    private static final String[] datadirs = 
-    {  	// NE MODIFIEZ PAS CELUI-CI
-	// car il permet de tester en etant a l'INSA.
-	"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/Maps",
-
-	// Celui-ci pour les chemins
-	"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/",
-
-        // On cherche aussi dans le sous-repertoire local "Maps" (s'il existe)
-	"Maps", 
-
-	// et dans le repertoire courant (Unix uniquement)
-	".",
-
-	// Si vous utilisez votre propre dossier pour les donnees, mettez-le ici.
-	"/home/votrepropredossier/a/vous",
-    } ;
-
-    // Extension testees. Garder l'extension vide dans la liste.
-    private static final String[] extensions = { ".map", ".gz", ".map.gz", ".path", ".path.gz", "" } ;
-
-    /** 
-     * Ouvre le fichier indiqué et renvoie un DataInputStream sur ce fichier.
-     * Le fichier ne sera pas ferme avant la fin de l'application.
-     * @param filename  Nom du fichier a ouvrir (sans chemin)
-     */
-    public static DataInputStream open (String filename) {
-
-	if (!filename.equals (new File(filename).getName())) {
-	    System.out.println("Le nom du fichier ne doit pas contenir un chemin (ni absolu, ni relatif).") ;
-	    System.out.println("Il doit juste contenir le nom du fichier contenant la carte.") ;
-	    System.out.println("Si vous voulez utiliser un dossier specifique, configurez base/Openfile.java") ;
-	    System.exit(1) ;
-	}
-
-	boolean trouve = false ;
-	InputStream fileinput = null ;
-	String fname = null ;
-	String fullpath = null ;
-
-	for (int extn = 0 ; !trouve && extn < extensions.length ; extn++) {
-	    fname = filename + extensions[extn] ;
-	    for (int index = 0 ; !trouve && index < datadirs.length ; index++) {
-		fullpath = datadirs[index] + File.separator + fname ;
-		File file = new File(fullpath) ;
-		if (file.canRead()) {
-		    trouve = true ;
-		    try {
-			fileinput = new FileInputStream(file) ;
-		    } catch (IOException e) {
-			e.printStackTrace() ;
-			System.exit(1) ;
-		    }
-		}
-	    }
-	}
-
-	if (!trouve) {
-	    // Pas trouve
-	    System.out.println("Impossible de trouver le fichier " + filename) ;
-	    System.out.println("  pourtant j'ai cherche dans les dossiers : ") ;
-	    int existepas = 0 ;
-	    for (int i = 0 ; i < datadirs.length ; i++) {
-		System.out.println("     - " + datadirs[i]) ;
-		if (!new File(datadirs[i]).isDirectory()) {
-		    switch (existepas) {
-		    case 0:  System.out.println("       (Ce dossier n'existe pas d'ailleurs)") ; break;
-		    case 1:  System.out.println("       (Ce dossier n'existe pas non plus)") ; break;
-		    default: System.out.println("       (Celui-la non plus)") ; break;
-		    }
-		    existepas++ ;
-		}
-		System.out.println() ;
-	    }
-	    System.exit(1) ;
-	}
-
-	System.out.println("Fichier utilisee : " + fullpath) ;
-	System.out.println() ;
-
-	if (fname.endsWith(".gz")) {
-	    // The file is gzipped.
-	    try {
-		fileinput = new GZIPInputStream(fileinput) ;
-	    } catch (IOException e) {
-		e.printStackTrace() ;
-		System.exit(1) ;		
-	    }
-	}
-	else {
-	    fileinput = new BufferedInputStream(fileinput) ;
-	}
-
-	return new DataInputStream(fileinput) ;
-    }
-
-}

src/main/org/insa/base/Readarg.java

@@ -1,86 +0,0 @@
-package org.insa.base ;
-
-import java.io.* ;
-
-/* Ne lisez pas cette classe. Lancez javadoc et lisez la doc generee plutot. */
-
-/**
- *  La classe Readarg facilite la lecture de donnees depuis le clavier ou depuis la ligne de commande.
- *
- */
-public class Readarg {
-
-    private final String[] args ;
-    private int next ;
-
-    // Le Java est le langage prefere des Shadoks.
-    private final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-
-    public Readarg(String[] argz) {
-	this.args = argz ;
-	this.next = 0 ;
-    }
-
-    /** 
-     * Obtient une chaine, ou bien depuis la ligne de commande, ou depuis l'entree standard.
-     * @param msg  Message affiche avant de demander la chaine
-     */
-    public String lireString (String msg) {
-	
-	String resultat = "" ;
-
-	System.out.print(msg) ;
-	
-	if (this.next >= this.args.length) {
-	    try {
-		resultat = br.readLine () ;
-	    } catch (Exception e) {
-		System.err.println ("Erreur de lecture de l'entree standard.") ;
-		System.exit(1) ;
-	    }
-	}
-	else {
-	    resultat = this.args[this.next] ;
-	    this.next++ ;
-	    System.out.println (resultat) ;
-	}
-
-	return resultat ;
-    }
-
-
-    /** 
-     * Obtient un entier, ou bien depuis la ligne de commande, ou depuis l'entree standard.
-     * @param msg  Message affiche avant de demander l'entier
-     */
-    public int lireInt (String msg) {
-	String lu = lireString (msg) ;
-	int result = 0 ;
-	try {
-	    result = Integer.parseInt(lu) ;
-	}
-	catch (Exception e) {
-	    System.err.println ("Un entier est attendu mais je lis " + lu) ;
-	    System.exit(1) ;
-	}
-	return result ;
-    }
-
-    /** 
-     * Obtient un float, ou bien depuis la ligne de commande, ou depuis l'entree standard.
-     * @param msg  Message affiche avant de demander le float.
-     */
-    public float lireFloat (String msg) {
-	String lu = lireString (msg) ;
-	float result = 0 ;
-	try {
-	    result = Float.parseFloat(lu) ;
-	}
-	catch (Exception e) {
-	    System.err.println ("Un reel est attendu mais je lis " + lu) ;
-	    System.exit(1) ;
-	}
-	
-	return result ;
-    }
-}

src/main/org/insa/base/Utils.java

@@ -1,57 +0,0 @@
-package org.insa.base ;
-
-import java.io.* ;
-
-import org.insa.drawing.Drawing;
-
-/**
- *   Fonctions accessoires dont vous n'avez pas a vous servir directement.
- */
-public class Utils {
-
-
-	// Calibrer la sortie graphique en fonction de la carte
-	// Vous pouvez modifier les coordonnees pour ameliorer le rendu.
-	public static void calibrer(String nomCarte, Drawing dessin) {
-
-		if (nomCarte.startsWith("insa")) {
-			// L'INSA
-			dessin.setBB (1.462, 1.473, 43.567, 43.5744) ;
-		}
-		else if (nomCarte.startsWith("paris")) {
-			// Ile de la Cité, Paris
-			dessin.setBB (2.329, 2.372, 48.839, 48.867) ;
-		}
-		else if (nomCarte.startsWith("mayot")) {
-			// Mayotte
-			dessin.setBB (44.5, 45.5, -13.25, -12.25) ;
-		}
-		else if (nomCarte.startsWith("reuni")) {
-			// La Réunion
-			dessin.setBB (55.0, 56.0, -21.5, -20.5) ;
-		}
-		else if (nomCarte.startsWith("midip")) {
-			dessin.setBB (-0.6, 3.8, 42.2, 45.3) ;
-		}
-		else if (nomCarte.startsWith("franc")) {
-			dessin.setBB (-5.2, 10.0, 41.0, 51.5) ;
-		}
-		else if (nomCarte.startsWith("pfranc")) {
-			dessin.setBB (-5.2, 10.0, 41.0, 51.5) ;
-		}
-		else if (nomCarte.startsWith("morbihan")) {
-			dessin.setBB (-3.53, -2.452, 47.27, 47.665) ;
-		}
-		else if (nomCarte.startsWith("newzealand")) {
-			dessin.setBB (153.415, 179.912, -47.931, -33.980) ;
-		}
-		else if (nomCarte.startsWith("fract") || nomCarte.startsWith("carr")) {
-			dessin.setBB (-0.05, 1.05, -0.05, 1.05) ;
-		}
-		else {
-			dessin.setBB (-20.0, 50.0, 20.0, 70.0) ;
-		}
-	}
-
-
-}

src/main/org/insa/drawing/Drawing.java

@@ -37,11 +37,16 @@ public interface Drawing {
     /**
      * Set the pencil color.
      * 
-     * param color Color for the pencil.
+     * @param color Color for the pencil.
      * 
      */
     public void setColor(Color col);
     
+    /**
+     * Clear the drawing.
+     */
+	public void clear();
+
     /**
      *  Indique les bornes de la fenetre graphique.
      *  Le calcul des coordonnees en pixel se fera automatiquement

src/main/org/insa/drawing/DrawingInvisible.java

@@ -35,4 +35,10 @@ public class DrawingInvisible implements Drawing {
 	@Override
 	public void repaint() { }
 
+	@Override
+	public void clear() {
+		// TODO Auto-generated method stub
+		
+	}
+    
 }

src/main/org/insa/drawing/DrawingVisible.java

@@ -1,14 +1,20 @@
 package org.insa.drawing;
 
-import java.awt.*;
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Image;
 import java.awt.image.*;
 
+import javax.swing.JPanel;
+
 /**
  *   Cette implementation de la classe Dessin produit vraiment un affichage
  *   (au contraire de la classe DessinInvisible).
  */
 
-public class DrawingVisible extends Canvas implements Drawing {
+public class DrawingVisible extends JPanel implements Drawing {
 
 	/**
 	 * 
@@ -21,8 +27,9 @@ public class DrawingVisible extends Canvas implements Drawing {
 	private float long2;
 	private float lat1;
 	private float lat2;
-	private final float width;
-	private final float height;
+	
+	// Width and height of the image
+	private final int width, height;
 
 	private boolean bb_is_set ;
 	
@@ -34,15 +41,18 @@ public class DrawingVisible extends Canvas implements Drawing {
 	/**
 	 *  Cree et affiche une nouvelle fenetre de dessin.
 	 */
-	public DrawingVisible (int largeur, int hauteur) {
+	public DrawingVisible() {
 		super();
 		
-		this.zoomAndPanListener = new ZoomAndPanListener(this, 0, ZoomAndPanListener.DEFAULT_MAX_ZOOM_LEVEL, 1.2);
+		this.zoomAndPanListener = new ZoomAndPanListener(this, ZoomAndPanListener.DEFAULT_MIN_ZOOM_LEVEL, 20, 1.2);
 		this.addMouseListener(zoomAndPanListener);
 		this.addMouseMotionListener(zoomAndPanListener);
 		this.addMouseWheelListener(zoomAndPanListener);
 		
-		BufferedImage img = new BufferedImage (largeur, hauteur, BufferedImage.TYPE_3BYTE_BGR);
+		this.width = 2000;
+		this.height = 1600;
+		
+		BufferedImage img = new BufferedImage (this.width, this.height, BufferedImage.TYPE_3BYTE_BGR);
 		
 		this.image = img;
 		this.gr = img.createGraphics();
@@ -51,40 +61,24 @@ public class DrawingVisible extends Canvas implements Drawing {
 		
 		this.bb_is_set = false;
 
-		this.width = largeur;
-		this.height = hauteur;
 
-		this.long1 = (float)0.0;
-		this.long2 = (float)largeur;
-		this.lat1  = (float)0.0;
-		this.lat2  = (float)hauteur;
+		this.long1 = 0.0f;
+		this.long2 = this.width;
+		this.lat1  = 0.0f;
+		this.lat2  = this.height;
 
-		this.setColor(Color.white);
-		gr.fillRect(0,0, largeur, hauteur);
+		this.clear();
 		this.repaint();
 
 	}
 
 	@Override
-	public void paint(Graphics g1) {
+	public void paintComponent(Graphics g1) {
 		Graphics2D g = (Graphics2D)g1;
 		g.setTransform(zoomAndPanListener.getCoordTransform());
 		g.drawImage(image, 0, 0, this);
 	}
 	
-
-	@Override
-	public Dimension getPreferredSize() {
-		Dimension size = new Dimension(0, 0);
-
-		if (image != null) {
-			int w = image.getWidth(null);
-			int h = image.getHeight(null);
-			size = new Dimension(w > 0 ? w : 0, h > 0 ? h : 0);
-		}
-		return size;
-	}
-	
 	@Override
 	public void setAutoRepaint(boolean autoRepaint) {
 		this.autoRepaint = autoRepaint;
@@ -96,48 +90,41 @@ public class DrawingVisible extends Canvas implements Drawing {
 		}
 	}
 	
-	public void setWidth (int width) {
+	public void setWidth(int width) {
 		this.gr.setStroke(new BasicStroke(width));
 	}
 
-	public void setColor (Color col) {
-		this.gr.setColor (col);
+	public void setColor(Color col) {
+		this.gr.setColor(col);
 	}
 
-	public void setBB (double long1, double long2, double lat1, double lat2) {	
+	public void clear() {
+		this.gr.setColor(Color.WHITE);
+		this.gr.fillRect(0, 0, this.width, this.height);
+	}
+
+	public void setBB(double long1, double long2, double lat1, double lat2) {	
 
 		if (long1 > long2 || lat1 > lat2) {
 			throw new Error("DessinVisible.setBB : mauvaises coordonnees.");
 		}
 		
-		/* Adapte la BB en fonction de la taille du dessin, pour préserver le ratio largeur/hauteur */
-		double deltalong = long2 - long1 ;
-		double deltalat = lat2 - lat1 ;
-		double ratiobb = deltalong / deltalat ;
-		double ratiogr = width / height ;
+		this.long1 = (float)long1;
+		this.long2 = (float)long2;
+		this.lat1= (float)lat1;
+		this.lat2 = (float)lat2;
 		
-		/* On ne peut qu'agrandir la BB, pour ne rien perdre. 
-		 * Si le ratiobb est trop petit, il faut agrandir deltalong 
-		 * s'il est trop grand, il faut agrandir deltalat. */
-		if (ratiobb < ratiogr) {
-			/* De combien faut-il agrandir ? */
-			double delta = (ratiogr - ratiobb) * deltalat ;
+		this.bb_is_set = true;
 		
-			this.long1 = (float)(long1 - 0.5*delta) ;
-			this.long2 = (float)(long2 + 0.5*delta) ;
-			this.lat1 = (float)lat1 ;
-			this.lat2 = (float)lat2 ;
-		}
-		else {
-			double delta = (deltalong / ratiogr) - deltalat ;
+		double scale = 1 / Math.max(this.width / (double)this.getWidth(),  this.height / (double)this.getHeight());
 		
-			this.long1 = (float)long1 ;
-			this.long2 = (float)long2 ;
-			this.lat1 = (float)(lat1 - 0.5*delta);
-			this.lat2 = (float)(lat2 + 0.5*delta);
-		}
+		this.zoomAndPanListener.getCoordTransform().setToIdentity();
+		this.zoomAndPanListener.getCoordTransform().translate((this.getWidth() - this.width * scale) / 2, 
+				(this.getHeight() - this.height * scale) / 2);
+		this.zoomAndPanListener.getCoordTransform().scale(scale, scale);
+		this.zoomAndPanListener.setZoomLevel(0);
+		this.repaint();
 		
-		this.bb_is_set = true ;
 	}
 
 	private int projx(float lon) {
@@ -154,7 +141,7 @@ public class DrawingVisible extends Canvas implements Drawing {
 		}
 	}
 
-	public void drawLine (float long1, float lat1, float long2, float lat2) {
+	public void drawLine(float long1, float lat1, float long2, float lat2) {
 		this.checkBB() ;
 		int x1 = this.projx(long1) ;
 		int x2 = this.projx(long2) ;
@@ -165,7 +152,7 @@ public class DrawingVisible extends Canvas implements Drawing {
 		this.doAutoPaint();
 	}
 
-	public void drawPoint (float lon, float lat, int width) {
+	public void drawPoint(float lon, float lat, int width) {
 		this.checkBB() ;
 		int x = this.projx(lon) - width / 2 ;
 		int y = this.projy(lat) - width / 2 ;
@@ -173,7 +160,7 @@ public class DrawingVisible extends Canvas implements Drawing {
 		this.doAutoPaint();
 	}
 
-	public void putText (float lon, float lat, String txt) {
+	public void putText(float lon, float lat, String txt) {
 		this.checkBB() ;
 		int x = this.projx(lon) ;
 		int y = this.projy(lat) ;

src/main/org/insa/drawing/ZoomAndPanListener.java

@@ -1,4 +1,5 @@
 package org.insa.drawing;
+
 import java.awt.*;
 import java.awt.event.*;
 import java.awt.geom.AffineTransform;
@@ -32,6 +33,11 @@ public class ZoomAndPanListener implements MouseListener, MouseMotionListener, M
 		this.zoomMultiplicationFactor = zoomMultiplicationFactor;
 	}
 	
+	public void translate(double dx, double dy) {
+		coordTransform.translate(dx, dy);
+		targetComponent.repaint();
+	}
+
 
 	public void mouseClicked(MouseEvent e) {
 	}

src/main/org/insa/drawing/graph/BasicGraphPalette.java

@@ -0,0 +1,97 @@
+package org.insa.drawing.graph;
+
+import java.awt.Color;
+
+import org.insa.graph.RoadInformation.RoadType;
+
+public class BasicGraphPalette implements GraphPalette {
+	
+	// Color types for arc.
+    static final Color motorway = Color.RED;
+    static final Color bigroad = new Color(255, 105, 0);
+    static final Color smallroad = new Color(255, 234, 0);
+    static final Color coastline = Color.BLUE;
+    
+    // Default point width
+    static final int DEFAULT_POINT_WIDTH = 1;
+    
+    /**
+     * 
+     */
+    public BasicGraphPalette() { }
+    
+	@Override
+	public int getDefaultPointWidth() {
+		return 2;
+	}
+
+	@Override
+	public Color getDefaultPointColor() {
+		return Color.GREEN;
+	}
+
+	@Override
+	public Color getColorForType(RoadType type) {
+		Color color = Color.BLACK;
+		switch (type) {
+			case MOTORWAY: 
+				color = motorway;
+				break;
+			case TRUNK:
+			case PRIMARY:
+			case SECONDARY:
+			case MOTORWAY_LINK:
+			case TRUNK_LINK:
+			case PRIMARY_LINK:
+				color = bigroad;
+				break;
+			case SECONDARY_LINK:
+			case TERTIARY:
+			case RESIDENTIAL:
+			case UNCLASSIFIED:
+			case ROAD:
+			case LIVING_STREET:
+			case SERVICE:
+			case ROUNDABOUT:
+				color = smallroad;
+				break;
+			case COASTLINE:
+				color = coastline;
+				break;
+		}
+		return color;
+	}
+
+	@Override
+	public int getWidthForType(RoadType type) {
+		int width = 1;
+		switch (type) {
+			case MOTORWAY: 
+				width = 2;
+				break;
+			case TRUNK:
+			case PRIMARY:
+			case SECONDARY:
+			case MOTORWAY_LINK:
+			case TRUNK_LINK:
+			case PRIMARY_LINK:
+				width = 1;
+				break;
+			case SECONDARY_LINK:
+			case TERTIARY:
+			case RESIDENTIAL:
+			case UNCLASSIFIED:
+			case ROAD:
+			case LIVING_STREET:
+			case SERVICE:
+			case ROUNDABOUT:
+				width = 1;
+				break;
+			case COASTLINE:
+				width = 4;
+				break;
+		}
+		return width;
+	}
+	
+}

src/main/org/insa/drawing/graph/BlackAndWhiteGraphPalette.java

@@ -0,0 +1,25 @@
+package org.insa.drawing.graph;
+
+import java.awt.Color;
+
+import org.insa.graph.RoadInformation.RoadType;
+
+public class BlackAndWhiteGraphPalette extends BasicGraphPalette {
+	
+	// Road colors (index
+	private final static Color[] ROAD_COLOR_FROM_WIDTH = {
+		null, new Color(140, 140, 140), new Color(80, 80, 80), new Color(40, 40, 40), new Color(30, 30, 30)
+	};
+
+	@Override
+	public Color getDefaultPointColor() {
+		return Color.BLACK;
+	}
+
+	@Override
+	public Color getColorForType(RoadType type) {
+		int width = getWidthForType(type);
+		return ROAD_COLOR_FROM_WIDTH[width];
+	}
+
+}

src/main/org/insa/drawing/graph/GraphDrawing.java

@@ -0,0 +1,134 @@
+package org.insa.drawing.graph;
+
+import java.awt.Color;
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import org.insa.drawing.Drawing;
+import org.insa.graph.Arc;
+import org.insa.graph.Graph;
+import org.insa.graph.Node;
+import org.insa.graph.Point;
+import org.insa.graph.RoadInformation.RoadType;
+
+public class GraphDrawing {
+
+	// Drawing
+	private Drawing drawing;
+
+	// Palette
+	private GraphPalette palette;
+	
+	public GraphDrawing(Drawing drawing) {
+		this.drawing = drawing;
+		this.palette = new BasicGraphPalette();
+	}
+	
+	public GraphDrawing(Drawing drawing, GraphPalette palette) {
+		this.drawing = drawing;
+		this.palette = palette;
+	}
+
+	public void drawLine(Point p1, Point p2) {
+		drawing.drawLine(p1.getLongitude(), p1.getLatitude(), 
+				p2.getLongitude(), p2.getLatitude());
+	}
+	
+	public void drawPoint(Point p) {
+		drawPoint(p, palette.getDefaultPointWidth());
+	}
+	
+	public void drawPoint(Point p, int width) {
+		drawing.drawPoint(p.getLongitude(), p.getLatitude(), width);
+	}
+	
+	public void drawPoint(Point p, int width, Color c) {
+		drawing.setColor(c);
+		drawing.drawPoint(p.getLongitude(), p.getLatitude(), width);
+	}
+
+	/**
+	 * Draw the given arc with automatic color and width depending
+	 * on the road type.
+	 * 
+	 * @param arc Arc to draw.
+	 */
+	public void drawArc(Arc arc) {
+		drawArc(arc, true);
+	}
+	
+	/**
+	 * Draw the given arc.
+	 * 
+	 * @param arc Arc to draw.
+	 * @param autoColorAndWidth Set to true to set color and width based
+	 * on the road type of the arc.
+	 */
+	public void drawArc(Arc arc, boolean autoColorAndWidth) {
+		ArrayList<Point> pts = arc.getPoints();
+		if (!pts.isEmpty()) {
+			if (autoColorAndWidth) {
+				drawing.setColor(palette.getColorForType(arc.getInfo().getType()));
+				drawing.setWidth(palette.getWidthForType(arc.getInfo().getType()));
+			}
+			Iterator<Point> it1 = pts.iterator();
+			Point prev = it1.next();
+			while (it1.hasNext()) {
+				Point curr = it1.next();
+				drawLine(prev, curr);
+				prev = curr;
+			}
+		}
+	}
+	
+	/**
+	 * Initialize the drawing for the given graph.
+	 * 
+	 * @param graph
+	 */
+	public void initialize(Graph graph) {
+		double minLon = Double.POSITIVE_INFINITY, minLat = Double.POSITIVE_INFINITY, 
+				maxLon = Double.NEGATIVE_INFINITY, maxLat = Double.NEGATIVE_INFINITY;
+		for (Node node: graph.getNodes()) {
+			Point pt = node.getPoint();
+			if (pt.getLatitude() < minLat) {
+				minLat = pt.getLatitude();
+			}
+			if (pt.getLatitude() > maxLat) {
+				maxLat = pt.getLatitude();
+			}
+			if (pt.getLongitude() < minLon) {
+				minLon = pt.getLongitude();
+			}
+			if (pt.getLongitude() > maxLon) {
+				maxLon = pt.getLongitude();
+			}
+		}
+		
+		double deltaLon = 0.02 * (maxLon - minLon),
+				deltaLat = 0.02 * (maxLat - minLat);
+
+		drawing.setBB(minLon - deltaLon, maxLon + deltaLon, 
+				minLat - deltaLat, maxLat + deltaLat);
+	}
+
+	
+	/**
+	 * Clear the drawing and draw the given graph on the drawing.
+	 * 
+	 * @param graph Graph to draw.
+	 */
+	public void drawGraph(Graph graph) {
+
+		drawing.clear();
+		
+		initialize(graph);
+
+		for (Node node: graph.getNodes()) {
+			for (Arc arc: node.getSuccessors()) {
+				drawArc(arc);
+			}
+		}
+	}
+
+}

src/main/org/insa/drawing/graph/GraphPalette.java

@@ -0,0 +1,33 @@
+package org.insa.drawing.graph;
+
+import java.awt.Color;
+
+import org.insa.graph.RoadInformation.RoadType;
+
+public interface GraphPalette {
+	
+	/**
+	 * @return The default point width for this palette.
+	 */
+	public int getDefaultPointWidth();
+	
+	/**
+	 * @return The default point color for this palette.
+	 */
+	public Color getDefaultPointColor();
+	
+	/**
+	 * @param type Type of the road.
+	 * 
+	 * @return Color associated to the given type of road.
+	 */
+	public Color getColorForType(RoadType type);
+
+	/**
+	 * @param type Type of the road.
+	 * 
+	 * @return Width associated to the given type of road.
+	 */
+	public int getWidthForType(RoadType type);
+
+}

src/main/org/insa/drawing/graph/PathDrawing.java

@@ -0,0 +1,52 @@
+package org.insa.drawing.graph;
+
+import java.awt.Color;
+
+import org.insa.drawing.Drawing;
+import org.insa.graph.Arc;
+import org.insa.graph.Path;
+
+public class PathDrawing {
+	
+	// Default color
+	public static final Color DEFAULT_PATH_COLOR = new Color(255, 0, 255);
+	
+	// Drawing
+	private Drawing drawing;
+	private GraphDrawing graphDrawing;
+	
+	/**
+	 * @param drawing
+	 */
+	public PathDrawing(Drawing drawing) {
+		this.drawing = drawing;
+		this.graphDrawing = new GraphDrawing(drawing);
+	}
+	
+	/**
+	 * Draw the given path with the given color.
+	 * 
+	 * @param path
+	 * @param color
+	 */
+	public void drawPath(Path path, Color color) {
+		this.graphDrawing.drawPoint(path.getFirstNode().getPoint(), 4, color);
+		this.drawing.setColor(color);
+		this.drawing.setWidth(2);
+		for (Arc arc: path.getArcs()) {
+			this.graphDrawing.drawArc(arc, false);
+		}
+		this.graphDrawing.drawPoint(path.getLastNode().getPoint(), 4, color);
+	}
+	
+	/**
+	 * Draw the given path with default color.
+	 * 
+	 * @param path
+	 */
+	public void drawPath(Path path) {
+		drawPath(path, DEFAULT_PATH_COLOR);
+		drawing.repaint();
+	}
+
+}

src/main/org/insa/graph/Arc.java

@@ -45,7 +45,7 @@ public class Arc {
 	/**
 	 * @return Destination node of this arc.
 	 */
-	public Node getDest() {
+	public Node getDestination() {
 		return dest;
 	}
 

src/main/org/insa/graph/Graph.java

@@ -10,6 +10,10 @@ public class Graph {
 	// Nodes of the graph.
 	private ArrayList<Node> nodes;
 
+	/**
+	 * @param mapId
+	 * @param nodes
+	 */
 	public Graph(int mapId, ArrayList<Node> nodes) {
 		this.mapId = mapId;
 		this.nodes = nodes;
@@ -25,4 +29,12 @@ public class Graph {
 	 */
 	public int getMapId() { return mapId; }
 	
+	/**
+	 * @return Return the transpose graph of this graph.
+	 */
+	public Graph transpose() {
+		// TODO: 
+		return null;
+	}
+
 }

src/main/org/insa/graph/Node.java

@@ -2,7 +2,7 @@ package org.insa.graph;
 
 import java.util.ArrayList;
 
-public class Node {
+public class Node implements Comparable<Node> {
 
 	// ID of the node.
 	private int id;
@@ -49,4 +49,17 @@ public class Node {
 	 */
 	public Point getPoint() { return point; }
 	
+	@Override
+	public boolean equals(Object other) {
+		if (other instanceof Node) {
+			return getId() == ((Node) other).getId();
+		}
+		return false;
+	}
+
+	@Override
+	public int compareTo(Node other) {
+		return Integer.compare(getId(), other.getId());
+	}
+	
 }

src/main/org/insa/graph/io/BinaryGraphReader.java

@@ -3,6 +3,9 @@ package org.insa.graph.io;
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collections;
+
+import javax.sound.midi.ControllerEventListener;
 
 import org.insa.graph.Arc;
 import org.insa.graph.Graph;
@@ -149,7 +152,9 @@ public class BinaryGraphReader extends BinaryReader implements AbstractGraphRead
 					// And reverse arc if its a two-way road.
 					if (!info.isOneWay()) {
 						// Add without segments.
-						dest.addSuccessor(new Arc(orig, length, info));
+						ArrayList<Point> rPoints = new ArrayList<Point>(points);
+						Collections.reverse(rPoints);
+						dest.addSuccessor(new Arc(orig, length, info, rPoints));
 					}
 					
 				}

src/main/org/insa/graph/io/BinaryPathReader.java

@@ -4,6 +4,7 @@ import java.io.DataInputStream;
 import java.io.IOException;
 import java.util.ArrayList;
 
+import org.insa.graph.Arc;
 import org.insa.graph.Graph;
 import org.insa.graph.Node;
 import org.insa.graph.Path;
@@ -35,23 +36,36 @@ public class BinaryPathReader extends BinaryReader implements AbstractPathReader
 		// Number of nodes in the path (without first and last).
 		int nbNodes = dis.readInt();
 		
-		ArrayList<Node> nodes = new ArrayList<Node>(nbNodes + 2);
+		ArrayList<Arc> arcs = new ArrayList<Arc>();
 		
-		// Read first node
-		nodes.add(readNode(graph));
-		
-		// Read last node
-		Node lastNode = readNode(graph);
+		// Skip (duplicate) first and last node
+		readNode(graph);
+		readNode(graph);
 		
 		// Read intermediate nodes:
-		for (int node = 0; node < nbNodes; ++node) {
+		ArrayList<Node> nodes = new ArrayList<Node>();
+		for (int i = 0; i < nbNodes; ++i) {
 			nodes.add(readNode(graph));
 		}
 		
-		// Add last node
-		nodes.add(lastNode);
+		Node current = nodes.get(0);
+		for (int i = 1; i < nodes.size(); ++i) {
+			Node node = nodes.get(i);
+			Arc minArc = null;
+			for (Arc arc: current.getSuccessors()) {
+				if (arc.getDestination().equals(node)
+					&& (minArc == null || arc.getMinimumTravelTime() < minArc.getMinimumTravelTime())) {
+					minArc = arc;
+				}
+			}
+			arcs.add(minArc);
+			if (minArc == null) {
+				System.out.println("No arc found between nodes " + current.getId() + " and " + node.getId() + "\n");
+			}
+			current = node;
+		}
 		
-		return new Path(graph, nodes);
+		return new Path(graph, nodes.get(0), arcs);
 	}
 
 	/**

src/main/org/insa/graph/io/Openfile.java

@@ -0,0 +1,83 @@
+package org.insa.graph.io ;
+
+import java.io.* ;
+import java.util.zip.* ;
+
+/**
+ *  Class that can be used to open (compressed) files from a specified
+ *  set of folders or for a full path.
+ *  
+ */
+public class Openfile {
+
+	/**
+	 * These folders will be looked up for the files.
+	 * 
+	 */
+	private static final String[] datadirs = {
+			
+		// INSA folder containing maps.
+		"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/Maps",
+
+		// INSA folder containing paths.
+		"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/",
+
+		// Maps sub-folder.
+		"Maps", 
+		
+		// Current folder.
+		"."
+	};
+
+	/**
+	 * Available extensions.
+	 * 
+	 */
+	private static final String[] extensions = { ".map", ".gz", ".map.gz", ".path", ".path.gz", "" };
+
+	/** 
+	 * Open the given file and return a corresponding DataInputStream.
+	 * 
+	 * @param filename Name of the file to open (without extension) or full path to the given file.
+	 * @throws IOException 
+	 */
+	public static DataInputStream open(String filename) throws IOException {
+
+		File file = null;
+		String fullpath = null;
+		
+		// If the filename containing only a name (not a path):
+		if (filename.equals (new File(filename).getName())) {
+
+	
+			for (String ext: extensions) {
+				String fname = filename + ext;
+				for (int index = 0; file == null && index < datadirs.length; ++index) {
+					fullpath = datadirs[index] + File.separator + fname;
+					file = new File(fullpath);
+					if (!file.exists()) {
+						file = null;
+					}
+				}
+			}
+			
+		}
+		else {
+			fullpath = filename;
+			file = new File(filename);
+		}
+			
+		InputStream fileInput = new FileInputStream(new File(fullpath));
+
+		// If the file is compressed.
+		if (fullpath.endsWith(".gz")) {
+			fileInput = new GZIPInputStream(fileInput) ;
+		}
+		else {
+			fileInput = new BufferedInputStream(fileInput) ;
+		}
+
+		return new DataInputStream(fileInput) ;
+	}
+
+}

src/test/org/insa/graph/io/BinaryGraphReaderTest.java

@@ -0,0 +1,60 @@
+package org.insa.graph.io;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import org.insa.graph.Graph;
+import org.insa.graph.Node;
+import org.insa.graph.Point;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class BinaryGraphReaderTest {
+	
+	// Epsilon for latitude and longitude.
+	private static final double EPS = 1e-5;
+	
+	private static Graph midip;
+
+	@BeforeAll
+    static void initAll() throws IOException {
+		BinaryGraphReader reader = new BinaryGraphReader(Openfile.open("midip"));
+		midip = reader.read();
+    }
+	
+	void assertPointAt(Point p1, double longitude, double latitude) {
+		assertEquals(p1.getLongitude(), longitude, EPS);
+		assertEquals(p1.getLatitude(), latitude, EPS);
+	}
+
+    @Test
+    void testMidipNodes() {
+    		ArrayList<Node> nodes = midip.getNodes();
+    	
+    		assertEquals(nodes.size(), 150827);
+    		
+    		// Check the locations of some nodes.
+    		assertPointAt(nodes.get(58411).getPoint(), 1.799864, 43.92864);
+    		assertPointAt(nodes.get(133312).getPoint(), 0.539752, 43.317505);
+    		assertPointAt(nodes.get(113688).getPoint(), 1.682739, 44.799774);
+    		assertPointAt(nodes.get(118141).getPoint(), 0.274857, 43.47475);
+    		assertPointAt(nodes.get(146918).getPoint(), 0.116148, 43.811386);
+
+    }
+    
+    @Test
+    void testMidipArcs() {
+    		// TODO: Check the number of edges.
+    		// TODO: Check information for some edges.
+    }
+    
+}