bonjour,

j'ai un petit problème pour dessiner des lignes!

pour lma partie de code qui suit, je récupére le point de départ et d'arrivée des lignes mais je n'arrive pas à les dessiner
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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public class SlipViewerComponent extends JComponent{
	private static final int WIDTHRECT = 500;//Largeur du cadre
	private static final int HEIGHTRECT = 200;//Hauteur du cadre
	private Graphics2D 		g2DViewer;
	private Slip slip;
 
	private float              scale = 0.5f;//Echelle par défaut
 
	public SlipViewerComponent(Slip slip){
	    // Rendre le composant Opaque
	    setOpaque(true);
	    //Modification des propriétés par défaut du composant
	    setAutoscrolls(true);
	    System.out.println("slip :"+slip);
	    addSlipListeners(slip);
	}
 
	private void addSlipListeners(final Slip slip) {
		slip.addLineListener(new LineListener() {
	      public void lineChanged(LineEvent ev) {
	        Line line = ev.getLine();
	        System.out.println("line :"+line);
	        switch (ev.getType()) {
	          case ADD :
	            addLine( slip,line);
	            break;
	          case UPDATE :
	            updateLine(line);
	            break;
	          case DELETE :
	            deleteLine(line);
	            break;
	        }
	      }
	    });      
	}
 
	  private void addLine(final Slip slip,Line line) {		  
		  System.out.println("add Line aux points :"+line.getPoints());	
		  paintLines(this.g2DViewer,slip,line);
		  repaint();
		  revalidate();
	  }
 
	  private void updateLine(Line line) {
	    if (line.getLineAtStart() != null) {
	    	System.out.println("mise à jour point x1");               
	    }
	    if (line.getLineAtEnd() != null) {
	    	System.out.println("mise à jour point x2");              
	    }
	  }
 
	  private void deleteLine(Line line) {
		  System.out.println("suppression de la ligne");
	  }
 
	  /**
           * Dessine un composant
           */
	  @Override
	  protected void paintComponent(Graphics g) {
		  //Création d'une copie du contexte graphique
	    Graphics2D g2DViewer = (Graphics2D)g.create();
	    //dessin du fond
	    paintBackground(g2DViewer);
	    //Dessin des cadres
	    paintFrame(g2DViewer);  
	    paintDrawingFrame(g2DViewer);
	    paintTableFrame(g2DViewer);
 
	    //libération des ressources associées à l'objet Graphics2D
	    g2DViewer.dispose();
	  }
 
	  /**
           * dessine le fond du composant s'il est opaque
           */
	  private void paintBackground(Graphics2D g2DViewer) {
	    if (isOpaque()) {
	      //Récupération de la couleur de fond d'une fenêtre
	      //dans le Look and feel
	      Color backgroundColor = UIManager.getColor("window");
	      //remplissage du composant avec de la couleur de fond
	      g2DViewer.setColor(backgroundColor);
	      g2DViewer.fillRect(0, 0, getWidth(), getHeight());
	    }
	  }
	  /**
           * dessine le cadre de la fiche
           */
	  private void paintFrame(Graphics2D g2DViewer) {  
		  //couleur du rectangle
		  g2DViewer.setColor(Color.BLACK);
		  //dessine un rectangle
		  g2DViewer.drawRect(((this.getSize().width- WIDTHRECT)/2),((this.getSize().height-HEIGHTRECT)/2),WIDTHRECT,HEIGHTRECT);
	  }	  
 
	  /**
           * dessine le cadre de la partie schéma
           */
	  private void paintDrawingFrame(Graphics2D g2DViewer) {  
		  //couleur du rectangle
		  g2DViewer.setColor(Color.BLACK);
		  //dessine un rectangle
		  g2DViewer.drawRect(((this.getSize().width- WIDTHRECT)/2),((this.getSize().height-HEIGHTRECT)/2),WIDTHRECT/2,HEIGHTRECT);
	  }	
	  /**
           * dessine le cadre de la partie tableau
           */
	  private void paintTableFrame(Graphics2D g2DViewer) {  
		  //couleur du rectangle
		  g2DViewer.setColor(Color.BLACK);
		  //dessine un rectangle
		  g2DViewer.drawRect(((this.getSize().width- WIDTHRECT)/2)+(WIDTHRECT/2),((this.getSize().height-HEIGHTRECT)/2),WIDTHRECT/2,HEIGHTRECT);
	  }	
 
	  /**
           * Dessine les trait du schéma
           */
	  private void paintLines(Graphics2D g2DViewer,Slip slip,Line line) {
		if(line!=null){
 
		  System.out.println("line diff de null");
		  float scaleInverse = 1 / this.scale;
		  Shape linesArea = getLinesArea(slip.getLines());
		  g2DViewer.fill(linesArea);
 
	        // Draw selection border
	        g2DViewer.draw(getShape(line.getPoints()));
 
	        AffineTransform previousTransform = g2DViewer.getTransform();
	        // Draw start point of the wall
	        g2DViewer.translate(line.getXStart(), line.getYStart());
	        g2DViewer.scale(scaleInverse, scaleInverse);
 
 
	        double lineAngle = Math.atan2(line.getYEnd() - line.getYStart(), 
	            line.getXEnd() - line.getXStart());
	        g2DViewer.rotate(lineAngle);
	        g2DViewer.setTransform(previousTransform);
 
	        // Draw walls area
	        g2DViewer.setPaint(getForeground());
	        g2DViewer.setStroke(new BasicStroke(1.5f / this.scale));
	        g2DViewer.draw(linesArea);
 
		}
		else{System.out.println("line egal à null");}
 
	  }
 
	  /**
           * Returns an area matching the union of all line shapes. 
           */
	  private Area getLinesArea(Collection<Line> lines) {
		System.out.println("getLineArea collection de ligne"+lines);
	    Area area = new Area();
	    for (Line line : lines) {
	      area.add(new Area(getShape(line.getPoints())));
	    }   
	    System.out.println("getLineArea area"+area);
	    return area;
	  }
 
	  /**
           * Création d'un chemin qui relie le premier
           * point au autres point.
           */
	  private Shape getShape(float [][] points) {
	    GeneralPath linePath = new GeneralPath();
	    linePath.moveTo(points [0][0], points [0][1]);
	    for (int i = 1; i < points.length; i++) {
	      linePath.lineTo(points [i][0], points [i][1]);
	    }
	    linePath.closePath();//fermeture du chemin
	    return linePath;
	  }
}
j'ai une NullPointerException
J'ai inséser des marqueurs vers la console mais en vain... je n'arrive pas à trouver mon erreur

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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slip :org.vincentdamiens.electricalmanager.model.Slip@e5f46e
line :org.vincentdamiens.electricalmanager.model.Line@196bac4
add Line aux points :[[F@bfd10a
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4]
getLineArea areajava.awt.geom.Area@16b61c3
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@1c6866d
add Line aux points :[[F@a36b53
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d]
getLineArea areajava.awt.geom.Area@db3331
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@e0f0ad
add Line aux points :[[F@1d8f162
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad]
getLineArea areajava.awt.geom.Area@1cf662f
line :org.vincentdamiens.electricalmanager.model.Line@801059
add Line aux points :[[F@1b158db
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad, org.vincentdamiens.electricalmanager.model.Line@801059]
getLineArea areajava.awt.geom.Area@40b181
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@dc024a
add Line aux points :[[F@1a70b8
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad, org.vincentdamiens.electricalmanager.model.Line@801059, org.vincentdamiens.electricalmanager.model.Line@dc024a]
getLineArea areajava.awt.geom.Area@1de6817
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@eb724
add Line aux points :[[F@19ccba
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad, org.vincentdamiens.electricalmanager.model.Line@801059, org.vincentdamiens.electricalmanager.model.Line@dc024a, org.vincentdamiens.electricalmanager.model.Line@eb724]
getLineArea areajava.awt.geom.Area@1cfd3b2
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@21447f
add Line aux points :[[F@182a70
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad, org.vincentdamiens.electricalmanager.model.Line@801059, org.vincentdamiens.electricalmanager.model.Line@dc024a, org.vincentdamiens.electricalmanager.model.Line@eb724, org.vincentdamiens.electricalmanager.model.Line@21447f]
getLineArea areajava.awt.geom.Area@8a2023
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
line :org.vincentdamiens.electricalmanager.model.Line@1d9e279
add Line aux points :[[F@1a3aa2c
line diff de null
getLineArea collection de ligne[org.vincentdamiens.electricalmanager.model.Line@196bac4, org.vincentdamiens.electricalmanager.model.Line@1c6866d, org.vincentdamiens.electricalmanager.model.Line@e0f0ad, org.vincentdamiens.electricalmanager.model.Line@801059, org.vincentdamiens.electricalmanager.model.Line@dc024a, org.vincentdamiens.electricalmanager.model.Line@eb724, org.vincentdamiens.electricalmanager.model.Line@21447f, org.vincentdamiens.electricalmanager.model.Line@1d9e279]
getLineArea areajava.awt.geom.Area@1f95165
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.paintLines(SlipViewerComponent.java:158)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.addLine(SlipViewerComponent.java:71)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent.access$0(SlipViewerComponent.java:69)
	at org.vincentdamiens.electricalmanager.swing.SlipViewerComponent$1.lineChanged(SlipViewerComponent.java:56)
	at org.vincentdamiens.electricalmanager.model.Slip.fireLineEvent(Slip.java:501)
	at org.vincentdamiens.electricalmanager.model.Slip.addLine(Slip.java:377)
	at org.vincentdamiens.electricalmanager.swing.PlanController.createNewLine(PlanController.java:383)
	at org.vincentdamiens.electricalmanager.swing.PlanController.access$17(PlanController.java:376)
	at org.vincentdamiens.electricalmanager.swing.PlanController$NewLineState.moveMouse(PlanController.java:1712)
	at org.vincentdamiens.electricalmanager.swing.PlanController.moveMouse(PlanController.java:206)
	at org.vincentdamiens.electricalmanager.swing.PlanComponent$5.mouseMoved(PlanComponent.java:324)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
merci pour votre aide