[débutant]probleme pour dessiner des shapes

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:oops:

Code:

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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; } }

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j'ai une NullPointerException
J'ai inséser des marqueurs vers la console mais en vain... je n'arrive pas à trouver mon erreur

Code:

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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)

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merci pour votre aide

Slt
Ou est la ligne 158 dans ta classe ?

Hello,

Code:

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g2DViewer.fill(linesArea);

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dans la méthode paintLines
merci

Ton probleme est tout simplement que ton this.g2DViewer n'est pas initialisé
je ne vois nullepart dans ton code this.g2dViewer = ...

g2DViewer est une copie du contexte graphique

Code:

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1 2 3 4 5 6 7 8 9 10 11 12 13

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(); }

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:oops:

sauf que

Code:

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this.g2dViewer

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référence le champ

Code:

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private Graphics2D g2DViewer;

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lequel est null car non initialiser

ok bien vu ;)

j'ai initialiser dans la méthode paintCompoment sauf que j'ai toujours le m^me problème:?

En fait je crois que t as un ptit probleme d architecture ici car tu essaye d acceder au Graphics hors de la méthode paint, ce qui n'est pas vraiment le comportement pour lequel il est prévu.

Tu devrait plutot maintenir une liste de ligne, et lors de l appel a ton listener tu modifie cette liste puis tu appelles la methode repaint, c est comme ca que je le verrais personnellement.

Efectivement, ça peut pas marcher ;)

Je vais créer une liste de ligne
Merci pour ton aide:)