public void paint(Graphics g){
super.paint(g);
Graphics2D g2d = (Graphics2D)g;
if (scene != null){
Terrain terrain = scene.getTerrain();
for (Section section : terrain.getSections()){
paintFrontiere(g2d, section.getFrontiere().getSommets());
for (CourbeConduite cc : section.getCourbesConduites()){
paintCourbe(g2d, cc);
}
for (PointEntree entree : section.getEntrees()){