Go语言视频零基础入门到精通

javalearner

1. /*
   
2. <applet code="Wuerfel.class" width="400",height="400"></applet>
   
3. */
   
4. import java.awt.*;
   
5. import java.applet.*;
   
6. public class Wuerfel extends Applet {
   
7. // 8 Eckpunkte 1-8
   
8. // mit je 3 Koordinaten 1,2,3
   
9. double p[][] = new double[9][4];
   
10. int x=1, y=2, z=3;
    
11. public void init() {
    
12. setBackground(new Color(255,255,255));
    
13. //构造图形
    
14. p[1][x] = -100; p[1][y] = -100; p[1][z] = -100;
    
15. p[2][x] = +100; p[2][y] = -100; p[2][z] = -100;
    
16. p[3][x] = +100; p[3][y] = -100; p[3][z] = +100;
    
17. p[4][x] = -100; p[4][y] = -100; p[4][z] = +100;
    
18. p[5][x] = -100; p[5][y] = +100; p[5][z] = -100;
    
19. p[6][x] = +100; p[6][y] = +100; p[6][z] = -100;
    
20. p[7][x] = +100; p[7][y] = +100; p[7][z] = +100;
    
21. p[8][x] = -100; p[8][y] = +100; p[8][z] = +100;
    
22. // 8 - - - - - 7
    
23. // / | / |
    
24. // 5 - - - - - 6 |
    
25. // | | | |
    
26. // | 4 - - - -|- 3
    
27. // | / | /
    
28. // 1 - - - - - 2
    
29. }
    
30. // Rotationswinkel in rad
    
31. double angle_x = 0.01;
    
32. double angle_y = 0.0075;
    
33. double angle_z = 0.005;
    
34. Image buffer;
    
35. Graphics2D gBuffer;
    
36. public void paint(Graphics g) {
    
37. // Double-Buffering
    
38. if (buffer==null) {
    
39. buffer=createImage(this.getSize().width, this.getSize().height);
    
40. gBuffer=(Graphics2D)buffer.getGraphics();
    
41. }
    
42. gBuffer.clearRect(0,0,this.getSize().width, this.getSize().height);
    
43. // Antialiasing
    
44. gBuffer.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    
45. gBuffer.drawLine((int)(p[1][x])+200,(int)(p[1][y])+200,(int)(p[2][x])+200,(int)(p[2][y])+200);
    
46. gBuffer.drawLine((int)(p[2][x])+200,(int)(p[2][y])+200,(int)(p[3][x])+200,(int)(p[3][y])+200);
    
47. gBuffer.drawLine((int)(p[3][x])+200,(int)(p[3][y])+200,(int)(p[4][x])+200,(int)(p[4][y])+200);
    
48. gBuffer.drawLine((int)(p[4][x])+200,(int)(p[4][y])+200,(int)(p[1][x])+200,(int)(p[1][y])+200);
    
49. gBuffer.drawLine((int)(p[5][x])+200,(int)(p[5][y])+200,(int)(p[6][x])+200,(int)(p[6][y])+200);
    
50. gBuffer.drawLine((int)(p[6][x])+200,(int)(p[6][y])+200,(int)(p[7][x])+200,(int)(p[7][y])+200);
    
51. gBuffer.drawLine((int)(p[7][x])+200,(int)(p[7][y])+200,(int)(p[8][x])+200,(int)(p[8][y])+200);
    
52. gBuffer.drawLine((int)(p[8][x])+200,(int)(p[8][y])+200,(int)(p[5][x])+200,(int)(p[5][y])+200);
    
53. gBuffer.drawLine((int)(p[1][x])+200,(int)(p[1][y])+200,(int)(p[5][x])+200,(int)(p[5][y])+200);
    
54. gBuffer.drawLine((int)(p[2][x])+200,(int)(p[2][y])+200,(int)(p[6][x])+200,(int)(p[6][y])+200);
    
55. gBuffer.drawLine((int)(p[3][x])+200,(int)(p[3][y])+200,(int)(p[7][x])+200,(int)(p[7][y])+200);
    
56. gBuffer.drawLine((int)(p[4][x])+200,(int)(p[4][y])+200,(int)(p[8][x])+200,(int)(p[8][y])+200);
    
57. g.drawImage (buffer, 0, 0, this);
    
58. //线程
    
59. try {Thread.sleep(10);}
    
60. catch (InterruptedException e) {}
    
61. double px, py, pz;
    
62. for (int i=1;i<9;i++) {
    
63. px = p[i][x];
    
64. py = p[i][y];
    
65. pz = p[i][z];
    
66. // Rotation um x-Achse
    
67. p[i][y] = py*Math.cos(angle_x)-pz*Math.sin(angle_x);
    
68. p[i][z] = py*Math.sin(angle_x)+pz*Math.cos(angle_x);
    
69. py = p[i][y];
    
70. pz = p[i][z];
    
71. // Rotation um y-Achse
    
72. p[i][x] = px*Math.cos(angle_y)+pz*Math.sin(angle_y);
    
73. p[i][z] =-px*Math.sin(angle_y)+pz*Math.cos(angle_y);
    
74. px = p[i][x];
    
75. // Rotation um z-Achse
    
76. p[i][x] = px*Math.cos(angle_z)-py*Math.sin(angle_z);
    
77. p[i][y] = py*Math.cos(angle_z)+px*Math.sin(angle_z);
    
78. }
    
79. repaint();
    
80. }
    
81. public void update(Graphics g) {paint(g);}
    
82. }
    

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源码下载：http://file.javaxxz.com/2014/10/1/210746516.zip