1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
|
import java.applet.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.reflect.*;
import java.util.*;
import java.applet.Applet ;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
public class essai extends Applet
implements MouseListener, MouseMotionListener {
int xa, yb;
boolean dragging;
boolean dragRedSquare;
int offsetX, offsetY;
//-------
boolean NoeudVisitee,AgentFourmi,QtePhero;
String sauv_res_cycl="nombre de cycle bonne chemain\n";
tsp myTsp;
colony myColony;
double averages[];
TextField textNoeud,
textAlpha,
textBeta,
textAnt,
textVrate,
textAmount,
textRounds;
Label labelBestPath;
Button buttonGenerate,buttonGo;
Image ord;
public void init() {
xa = 10;
yb = 10;
setBackground(Color.lightGray);
addMouseListener(this);
addMouseMotionListener(this);
//---------
NoeudVisitee = false;
AgentFourmi = false;
QtePhero = false;
MediaTracker mt= new MediaTracker(this);
ord = getImage(getCodeBase(),"ord1.jpg");
mt.addImage(ord,0);
Panel stat_cyc=new Panel();
Panel panelRight = new Panel(new GridLayout(15, 2, 4, 4));
BorderLayout bl = new BorderLayout();
bl.setVgap(4);
Panel panelLeft = new Panel(bl);
Label labelNoeud = new Label("Noeud", Label.RIGHT);
Label labelAnt = new Label("Fourmi", Label.RIGHT);
Label labelVrate = new Label("Evaporation", Label.RIGHT);
Label labelAmount = new Label("Pheromone", Label.RIGHT);
Label labelRounds = new Label("Cycle", Label.RIGHT);
Label labelAlpha = new Label("Alpha", Label.RIGHT);
Label labelBeta = new Label("Beta", Label.RIGHT);
labelBestPath = new Label("0.0", Label.CENTER);
labelBestPath.setBackground(Color.red);
textNoeud = new TextField("5", 6);
textAnt = new TextField("1", 6);
textVrate = new TextField("0.5", 6);
textAmount = new TextField("1", 6);
textRounds = new TextField("40", 6);
textAlpha = new TextField("1", 6);
textBeta = new TextField("5", 6);
buttonGenerate = new Button("Generer");
buttonGo = new Button("Demarrer!");
buttonGo.setEnabled(false);
buttonGenerate.addActionListener(new buttonAL());
buttonGo.addActionListener(new buttonAL());
panelRight.add(labelNoeud); panelRight.add(textNoeud);
panelRight.add(labelAnt); panelRight.add(textAnt);
panelRight.add(labelVrate); panelRight.add(textVrate);
panelRight.add(labelAmount); panelRight.add(textAmount);
panelRight.add(labelRounds); panelRight.add(textRounds);
panelRight.add(labelAlpha); panelRight.add(textAlpha);
panelRight.add(labelBeta); panelRight.add(textBeta);
panelRight.add(new Label()); panelRight.add(buttonGenerate);
panelRight.add(new Label()); panelRight.add(buttonGo);
panelRight.add(new Label("MeilleurTrajet", Label.RIGHT));
panelRight.add(labelBestPath);
Panel panelMain = new Panel();
panelMain.add(panelLeft);
panelMain.add(panelRight);
Panel panelTop = new Panel(new BorderLayout());
panelTop.add("Center", panelMain);
setBackground(new Color (30,210,242));
add(panelTop);
//---------
}
public void mousePressed(MouseEvent evt) {
if (dragging)
return;
int x = evt.getX();
int y = evt.getY();
if (x >= xa && y >= yb ) {
dragging = true;
dragRedSquare = true;
offsetX = x - xa;
offsetY = y - yb;
}
System.out.println("PRESSED");
this.update(this.getGraphics());
}
public void mouseReleased(MouseEvent evt) {
dragging = false;
System.out.println("released");
this.update(this.getGraphics());
}
public void mouseDragged(MouseEvent evt) {
if (dragging == false)
return;
int x = evt.getX();
int y = evt.getY();
if (dragRedSquare) {
xa = x - offsetX;
yb = y - offsetY;
}
System.out.println("dragged");
this.update(this.getGraphics());
}
public void mouseMoved(MouseEvent evt) { }
public void mouseClicked(MouseEvent evt) { }
public void mouseEntered(MouseEvent evt) { }
public void mouseExited(MouseEvent evt) { }
//-------
class buttonAL implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand() == "Demarrer!") {
labelBestPath.setBackground(Color.blue);
int n = Integer.parseInt( textRounds.getText() );
int next_nbr_round=n+1;
String nouv_round="";
averages = new double[n];
for(int i = 0; i < n; i++)
averages[i] = myColony.runOneCycle();
labelBestPath.setBackground(Color.yellow);
AgentFourmi = true;
labelBestPath.setText( Double.toString(
Math.rint( myColony.bestLength*10000 ) / 10000) );
paint(getGraphics());
}
if (e.getActionCommand() == "Generer") {
myTsp = new tsp();
long t = (new Date()).getTime();
myTsp.GenererNoeud(Integer.parseInt(textNoeud.getText()), t);
myColony = new colony(Integer.parseInt(textAnt.getText()),1,1,myTsp);
NoeudVisitee = true;
paint(getGraphics());
buttonGo.setEnabled(true);
}
}
}
public void paint (Graphics g2) {
super.paintComponents(g2);
Graphics2D g = (Graphics2D)g2;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
addMouseListener(this);
addMouseMotionListener(this);
int w = getSize().width,h = getSize().height;
g.fillRect(0, 0, w, h);
if (!NoeudVisitee) return;
int n = myTsp.getNbreN();
g.setColor(Color.red);
for(int i = 0; i < n; i++) {g.drawImage(ord,(int)(myTsp.Noeud[i].x * w - 1),(int)(myTsp.Noeud[i].y * h - 1),this);}
System.out.println("on repeint le panel");
if (QtePhero) {
double minV = Double.MAX_VALUE, maxV = Double.MIN_VALUE;
for(int i = 0; i < n-1; i++)
for(int j = i+1; j < n; j++) {
if (minV > myColony.phMat[i][j])
minV = myColony.phMat[i][j];
if (maxV < myColony.phMat[i][j])
maxV = myColony.phMat[i][j];
}
double s = maxV - minV;
for(int i = 0; i < n-1; i++)
for(int j = i+1; j < n; j++) {
float t = (float)((myColony.phMat[i][j] - minV) / s);
g.setColor(new Color(t, t, t));
int x1 = (int)(myTsp.Noeud[i].x * w);
int y1 = (int)(myTsp.Noeud[i].y * h);
int x2 = (int)(myTsp.Noeud[j].x * w);
int y2 = (int)(myTsp.Noeud[j].y * h);
g.drawLine(x1, y1, x2, y2);
}
g.setColor(Color.yellow);
for(int i = 0; i < n; i++) {g.drawImage(ord,(int)(myTsp.Noeud[i].x * w - 1),(int)(myTsp.Noeud[i].y * h - 1),this);}
repaint();
return;
}
if (!AgentFourmi) return;
g.setColor(Color.white);
for(int i = 0; i < n - 1; i++) {
int c1 = myColony.bestPath[i];
int c2 = myColony.bestPath[i+1];
int x1 = (int)(myTsp.Noeud[c1].x * w);
int y1 = (int)(myTsp.Noeud[c1].y * h);
int x2 = (int)(myTsp.Noeud[c2].x * w);
int y2 = (int)(myTsp.Noeud[c2].y * h);
g.drawLine(x1, y1, x2, y2);
}
int c1 = myColony.bestPath[n-1];
int c2 = myColony.bestPath[0];
int x1 = (int)(myTsp.Noeud[c1].x * w);
int y1 = (int)(myTsp.Noeud[c1].y * h);
int x2 = (int)(myTsp.Noeud[c2].x * w);
int y2 = (int)(myTsp.Noeud[c2].y * h);
g.drawLine(x1, y1, x2, y2);
}
public void update(Graphics g2) // to stop refresh flickering
{
paint(g2);
}
}
//______
class tsp {
int NbreN; // nombre des noeuds
public node Noeud[]; // tableau contenant les noeuds de type node
double distMat[][]; // distance entre les noeuds (matrice)
public int getNbreN() { return NbreN; }
//**** classe caractérise un noeud****
public class node {
double x, y; // x est l'absisse du noeud, y est l'ordonné
public node(double a, double b) { x = a; y = b; }
public void setX(double t) { x = t; }
public void setY(double t) { y = t; }
public double getX() { return x; }
public double getY() { return y; }
}
// générer un ensemble des noeuds aléatoir
public void GenererNoeud(int n, long s) {
NbreN = n;
Random r = new Random(s);
Noeud = new node[n];
for(int i = 0; i < n; i++) {
Noeud[i] = new node(r.nextDouble(), r.nextDouble());
}
determineDistMat();
}
// ***calculer la distance entre 2 points***
public double dist(int i, int j) {
double t1 = Noeud[i].getX() - Noeud[j].getX(),
t2 = Noeud[i].getY() - Noeud[j].getY();
return Math.sqrt(t1*t1 + t2*t2);
}
// ***créer la matrice qui contient les distances entre les noeuds***
public void determineDistMat() {
distMat = new double[NbreN][NbreN];
for(int i = 0; i < NbreN; i++)
for(int j = i; j < NbreN; j++) {
distMat[i][j] = dist(i, j);
distMat[j][i] = dist(j, i);
}
}
//----------------------------------------
public double pathLength(int p[]) {// longeur de chemin
double t = 0;
for(int i = 0; i < NbreN - 1; i++)
t += dist(p[i], p[i+1]);
t += dist(p[NbreN-1], p[0]);
return t;
}
//----------------------------------------
public double getDist(int i, int j) {
return distMat[i][j];
}
}
class colony {
public double phMat[][];
double phAmt; // pheromone sur les arcs
public int controlAnt;
public int bestPath[];
public double bestLength;
public ant myAnts[];
tsp myTsp;
int na; // nombre de Fourmis
double vRate; // taux de vaporisation
Random rg;
//**** calsse Fourmi*****
class ant {
public int path[], mark[]; // caractèristique du fourmi tableau liste des noeud visité,path = les chemins
int noeudActuel;
double traveledLength;
public String ListeVisite[];
// *****constructeur de la classe ant*****
public ant(int n) {
mark = new int[n];
path = new int[n];
ListeVisite= new String[n];
}
//*******fin de constructeur*****
public double calculateTraveledLength()
{
traveledLength = myTsp.pathLength(path);
return traveledLength;
}
public double getTraveledLength()
{ return traveledLength; }
public void reset() {
noeudActuel =0;
path[0] = 0; // commencer au noeud[0]
for(int i = 0; i < myTsp.getNbreN(); i++)
mark[i] = 0;
mark[0] = 1; // noeud[0]a été visitée
}
//----------------------------------------
public void determineNextNoeud() {
int n = myTsp.getNbreN();
int countCandi = 0;// compteur
double alpha=0.5 , beta=0.3;
int[] candidate = new int[n];
double[] prCandi = new double[n];
for(int i = 0; i < n; i++) {
if (mark[i] == 0) {
candidate[countCandi] = i;// tableau des noeud non visité
prCandi[countCandi] = Math.pow(phMat[ path[noeudActuel] ][i],alpha) /
Math.pow(myTsp.getDist( path[noeudActuel], i ),beta);
++countCandi;// compteur des noeuds non visités
}
}
double s = 0;
for(int i = 0; i < countCandi; i++)
s += prCandi[i];
for(int i = 0; i < countCandi; i++)
prCandi[i] /= s;
// probabilité à choi
double hit = rg.nextDouble(),
t = prCandi[0];
int w = 0;
for(w = 0; w < countCandi - 1; w++) {
if (t > hit) break;
t += prCandi[w + 1];
}
++noeudActuel;
path[noeudActuel] = candidate[w];
mark[ candidate[w] ] = 1;
}
}
//******fin de la classe Fourmi*******
// constructeur de la classe colony
public colony(int n, double t, double p, tsp s) {
na = n; //nombre des Fourmi
vRate = t;
phAmt = p;
myTsp = s;
bestLength = Double.MAX_VALUE;
bestPath = new int[myTsp.getNbreN()];
phMat = new double[myTsp.getNbreN()][myTsp.getNbreN()];
myAnts = new ant[n];
rg = new Random();
for(int i = 0; i < n; i++)
myAnts[i] = new ant(myTsp.getNbreN());
for(int i = 0; i < myTsp.getNbreN(); i++)
for(int j = 0; j < myTsp.getNbreN(); j++) {
phMat[i][j] = 1;
phMat[j][i] = 1;
}
}
//----------------------------------------
public void runOneAnt(int x) {
int i=0 , j=0 ;
myAnts[x].reset();
if (myTsp.distMat[i][j] < 2) // condition ne fonctionne pas !!
{for(int k = 0; k < myTsp.getNbreN() - 1; k++)
myAnts[x].determineNextNoeud();
myAnts[x].calculateTraveledLength();
}}
//----------------------------------------
public double runOneCycle() {
for(int i = 0; i < na; i++)
runOneAnt(i);
return updatePhMat();
}
//----------------------------------------
public double updatePhMat() {
int n = Array.getLength( myAnts );
int m = myTsp.getNbreN();
controlAnt = -1;
for(int j = 0; j < myTsp.getNbreN(); j++)
for(int k = 0; k < myTsp.getNbreN(); k++)
phMat[j][k] *= vRate;
for(int i = 0; i < n; i++) {
double t = myAnts[i].getTraveledLength();
if (t < bestLength) {
controlAnt = i;// plusieur Fourmi
bestLength = t;
for(int j = 0; j < m; j++)
bestPath[j] = myAnts[i].path[j];
}
for(int j = 0; j < m - 1; j++) {
phMat[ myAnts[i].path[j] ][ myAnts[i].path[j+1] ] += phAmt / t;
phMat[ myAnts[i].path[j+1] ][ myAnts[i].path[j] ] += phAmt / t;
}
}
return bestLength;
}
} |
[Applet] Déplacer image avec la souris
Répondre avec citation
Partager