|
1 import java.applet.*;
2 import java.awt.*;
3 import JSci.maths.chaos.*;
4
5
10 public final class CatTransform extends Applet implements Runnable  {
11 private CatMap cm;
12 private double p1[],p2[],p3[],p4[];
13 private Thread thr;
14 private int xScale,yScale;
15 private int p1x,p1y,p2x,p2y,p3x,p3y,p4x,p4y;
16 private int iteration;
17 public void init() {
18 cm=new CatMap();
19 p1=new double[2];
20 p2=new double[2];
21 p3=new double[2];
22 p4=new double[2];
23 p1[0]=0.1;p1[1]=0.1;
24 p2[0]=0.9;p2[1]=0.1;
25 p3[0]=0.9;p3[1]=0.9;
26 p4[0]=0.1;p4[1]=0.9;
27 xScale=getSize().width;
28 yScale=getSize().height;
29 iteration=0;
30 }
31 public void start() {
32 if(thr==null)
33 thr=new Thread (this);
34 thr.start();
35 }
36 public void stop() {
37 thr=null;
38 }
39 private int dataToScreenX(double x) {
40 return (int)Math.round(x*xScale);
41 }
42 private int dataToScreenY(double y) {
43 return (int)Math.round(y*yScale);
44 }
45 public void run() {
46 while(thr==Thread.currentThread()) {
47 p1x=dataToScreenX(p1[0]);
48 p1y=dataToScreenY(p1[1]);
49 p2x=dataToScreenX(p2[0]);
50 p2y=dataToScreenY(p2[1]);
51 p3x=dataToScreenX(p3[0]);
52 p3y=dataToScreenY(p3[1]);
53 p4x=dataToScreenX(p4[0]);
54 p4y=dataToScreenY(p4[1]);
55 repaint();
56 try {
57 Thread.sleep(200);
58 } catch(InterruptedException e) {}
59 p1=cm.map(p1);
60 p2=cm.map(p2);
61 p3=cm.map(p3);
62 p4=cm.map(p4);
63 iteration++;
64 }
65 }
66 public void paint(Graphics g) {
67 showStatus("Iteration = "+iteration);
68 g.drawLine(p1x,p1y,p2x,p2y);
69 g.drawLine(p2x,p2y,p3x,p3y);
70 g.drawLine(p3x,p3y,p4x,p4y);
71 g.drawLine(p4x,p4y,p1x,p1y);
72 }
73 }
74
75 |
Popular Tags |
Java API By Example, From Geeks To Geeks.