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| public class Dessin_Graphe extends Super_Panel implements MouseListener,MouseMotionListener,Dessin_Listener{
/** La variable representant le graphe à afficher */
private GrapheListe graphe;
/** La variable autorisant ou non les modifications du graphe. */
private boolean modifPossible;
protected final static Stroke lien_stroke = new BasicStroke(2.5f); //largeur du trait pour les liens
protected final static Stroke basic_stroke = new BasicStroke(); //stroke par defaut
private final static Color couleurFond = Color.lightGray;
private final static Color couleurVille = Color.GREEN;
private final static Color couleurArc = Color.BLACK;
private final static Color couleurTexte = Color.darkGray;
private final static int villeHaut = 15;
private final static int villeLarg = 15;
protected final static Font policeTexte = new Font("Arial", Font.BOLD, 14); //police pour les noms des villes
protected final static Font policeDistance = new Font("Arial", Font.PLAIN, 12); //police pour les distances
/** La variable representant le controleur IHM que le dessin doit connaitre. */
protected Controleur_IHM c_IHM;
private static final int default_image_type= BufferedImage.TYPE_INT_ARGB; //type de l'image pour l'affichage
private BufferedImage buf_Img; //pour le rendu
private Graphics2D gra_Img; //pour le rendu
private Dimension default_size;
protected int largeur,hauteur; //dimension
private Line2D.Double segment = new Line2D.Double();
/** Current segment angle vs X axis.
*/ /** Starting angle.
*/
public static final double DEFAULT_ANGLE = Math.PI / 4.0;
private double angle = DEFAULT_ANGLE;
/**
* Creates a new instance of Dessin_Graphe
*/
public Dessin_Graphe(Gestionnaire_BD gBD, Object c) {
super(gBD);
this.graphe = new GrapheListe();
this.c_IHM = (Controleur_IHM) c;
this.c_IHM.set_Dessin(this);
this.setBackground(Color.GRAY);
addMouseListener(this);
addMouseMotionListener(this);
this.hauteur = this.HEIGHT;
this.largeur = this.WIDTH;
this.setPreferredSize(new Dimension(largeur,hauteur));
}
public void initDim(){
Dimension d = this.getSize();
this.hauteur = d.width;
this.largeur = d.height;
}
public void update(Graphics g){
paint(g);
}
public void paintComponent(Graphics g ){
super.paintComponent(g);
Graphics2D g2D = (Graphics2D) g;
this.initDim();
//création du buffer si il n'existe pas
if(gra_Img == null){
buf_Img = new BufferedImage(hauteur,largeur,default_image_type);
buf_Img.setAccelerationPriority(1.0f);
gra_Img = (Graphics2D) buf_Img.getGraphics();
}
this.optionDeRendu(g2D);
this.dessinerFond();
this.dessinerGraphe();
g2D.drawImage(buf_Img,0,0,this);
g2D.dispose();
}
public void optionDeRendu(Graphics2D g2D){
/** Désactivation de l'anti-aliasing */
g2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
g2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
/** Demande de rendu rapide */
g2D.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
g2D.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_SPEED);
g2D.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
g2D.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
}
public void dessinerGraphe(){
Iterator it2 = this.graphe.sommets.iterator();
while (it2.hasNext()){
Sommet sommet = (Sommet) it2.next();
Iterator it3 = sommet.arcsSucc.iterator();
while(it3.hasNext()){
Arc a = (Arc) it3.next();
this.dessinerRoute(a);
}
}
Iterator it = this.graphe.sommets.iterator();
while(it.hasNext()){
Sommet som = (Sommet) it.next();
this.dessinerVille(som);
}
}
/**
* Fonction permettant de dessiner une ville avec la couleur spécifiée
* @param som Le sommet correspondant à la ville qu'il faut dessiner.
* @param g2d Le graphique sur lequel on va dessiner
**/
public void dessinerVille(Sommet som){
//l'image de la ville
gra_Img.setColor(couleurVille);
gra_Img.fillOval(som.getPosX(), som.getPosY(), villeLarg,villeHaut);
gra_Img.setColor(Color.WHITE);
gra_Img.drawOval(som.getPosX(), som.getPosY(), villeLarg,villeHaut);
//le texte
gra_Img.setFont(policeTexte);
int w = gra_Img.getFontMetrics().stringWidth(som.getNom());
int h = gra_Img.getFontMetrics().getHeight()/4;
gra_Img.setColor(couleurTexte);
gra_Img.drawString(som.getNom(),som.getPosX()- w/2+villeLarg/2,som.getPosY()+ h + villeHaut/2);
}
/**
* Fonction permettant de dessiner un arc entre deux villes
* @param a Arc à dessiner
* @param g2d Graphique dans lequel il faudra dessiner l'arc
*/
public void dessinerRoute(Arc a){
gra_Img.setStroke(lien_stroke);
gra_Img.setFont(policeDistance);
FontMetrics fm = gra_Img.getFontMetrics();
/*int h = fm.getHeight();
int x1 = a.getS1().getPosX() + villeLarg/2;
int y1 = a.getS1().getPosY() + villeHaut/2;
int x2 = a.getS2().getPosX() + villeLarg/2;
int y2 = a.getS2().getPosY() + villeHaut/2;
gra_Img.setColor(couleurArc);
Line2D.Float l= new Line2D.Float(x1,y1,x2,y2);
gra_Img.draw(l);
//gra_Img.drawLine(x1,y1,x2,y2);
//affichage de la distance
//position du texte
String txt = "("+ a.getDeb() + "," + a.getCout()+")";
int xd = (x1+x2)/2 - gra_Img.getFontMetrics().stringWidth(txt)/2;
int yd = (y1+y2)/2 - gra_Img.getFontMetrics().getHeight()/4;
gra_Img.setColor(couleurTexte);
gra_Img.drawString(txt,xd,yd);
gra_Img.setStroke(basic_stroke);*/
int x1 = a.getS1().getPosX() + villeLarg/2;
int y1 = a.getS1().getPosY() + villeHaut/2;
int x2 = a.getS2().getPosX() + villeLarg/2;
int y2 = a.getS2().getPosY() + villeHaut/2;
this.paintArrow(x1,y1,x2,y2);
//affichage de la distance
//position du texte
String txt = "("+ a.getDeb() + "," + a.getCout()+")";
int xd = (x1+x2)/2 - gra_Img.getFontMetrics().stringWidth(txt)/2;
int yd = (y1+y2)/2 - gra_Img.getFontMetrics().getHeight()/4;
gra_Img.setColor(couleurTexte);
gra_Img.drawString(txt,xd,yd);
gra_Img.setStroke(basic_stroke);
}
/** Paint the arrow.
* @param graphics The graphics context in which to render.
* @param width The width of the drawing area.
* @param height The height of the drawing area.
*/
private void paintArrow(int x1, int y1,int x2, int y2) {
gra_Img.setColor(couleurArc);
gra_Img.draw(segment);
resetAngleRelativeToLocation(x1, y1,x2,y2);
drawArrowHeadAtLocation(segment.getX2(), segment.getY2(), angle);
}
/** Paint the arrow head at given location and angle.
* @param graphics The graphics context in which to render.
* @param x The X coordinate.
* @param y the Y coordinate.
* @param angle The angle (in radian).
*/
private void drawArrowHeadAtLocation( double x, double y, double angle) {
gra_Img.translate(x, y);
gra_Img.rotate(angle);
drawArrowHead();
gra_Img.rotate( -angle);
gra_Img.translate( -x, -y);
}
/** Draw a simple arrow head at (0, 0) that points to the right.
* @param graphics The graphics context in which to render.
*/
private void drawArrowHead() {
Polygon arrow = new Polygon();
arrow.addPoint(-7, 0);
arrow.addPoint(- 18, 4);
arrow.addPoint(- 18, - 4);
AffineTransform tx = new AffineTransform();
Shape arrowRotate = tx.createTransformedShape(arrow);
AffineTransform tx2 = new AffineTransform();
Shape arrowRotate2 = tx2.createTransformedShape(arrowRotate);
gra_Img.fill(arrowRotate2 );
}
public static class ValueNotDefinedException extends Exception {}
/** Gets the angle between the given vector and the horizontal axis.
* @param x1 The X coordinate of the first point.
* @param y1 The Y coordinate of the first point.
* @param x2 The X coordinate of the first point.
* @param y2 The Y coordinate of the first point.
* @return A value within the <CODE>[0, 2*PI[</CODE> range.
* @exception ValueNotDefinedException If the vector's length is zero, the angle is not defined.
* @since 1.1
*/
public static double calculateAngle(double x1, double y1, double x2, double y2) throws ValueNotDefinedException {
double a = (x2 - x1);
double b = (y2 - y1);
double length = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
if (length == 0) {
throw new ValueNotDefinedException();
}
double p = length; //Math.sqrt(a*a+b*b);
double theta = Math.asin(Math.abs(b) / p);
if (b < 0) {
theta = -theta;
}
if (a < 0) {
theta = Math.PI - theta;
}
// Rescale into [0, 2*PI[.
theta %= 2 * Math.PI;
if (theta < 0) {
theta += 2 * Math.PI;
}
return theta;
}
/** Reset the segment's angle relative to a given location.
* @param locationX The X coordinate.
* @param locationY The Y corrdinate.
*/
private void resetAngleRelativeToLocation(int x1, int y1,int x2, int y2) {
try {
int centerX = x1;
int centerY = y1;
// Angle between (center, location) and X axis.
double newAngle = calculateAngle(centerX, centerY, x2, y2);
AffineTransform transform = AffineTransform.getRotateInstance(newAngle - angle, centerX, centerY);
/*Point2D endPoint = transform.transform(segment.getP2(), null);
segment.setLine(centerX, centerY, endPoint.getX(), endPoint.getY());*/
segment.setLine(x1, y1, x2,y2);
angle = newAngle;
}
// Silently consume exception.
catch (Throwable t) {
}
}
/**
* Fonction qui dessine le fond.
* @param g2d
*/
public void dessinerFond(){
gra_Img.setColor(couleurFond);
gra_Img.fillRect(0,0,this.hauteur,this.largeur);
}
/** Fonction qui met à jour le graphe.
* @param graphe Le nouveau graphe à afficher.
*/
public void nouveau_Graphe(GrapheListe gra, boolean modiPos){
this.graphe = gra;
if(this.modifPossible != modiPos || modiPos == false) {// Si on change de fenetre, on doit redefinir le graphisme.
gra_Img=null;
buf_Img = null;
this.modifPossible = modiPos;}
repaint();
}
} |
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