手机上实现任意角度翻转算法

1、手机上实现任意角度翻转算法适用任何机型 录入者：admin | 时间：2006-05-19 17:41:06 | 作者： |   来源： | 点击数：1055 上一篇 下一篇web2.0package rorate;import javax.microedition.lcdui.Graphics;/* 图片任意角度翻转算法* 同时实现了Nokia特有API * author. BB * Sprite.java *  *  */ public class Sprite    &

2、#160;    /* SIN TABLE */       public final static int SIN_TABLE =                0, 4, 8, 13, 17, 22, 26, 31, 35, 39,         44, 48, 53, 57, 61, 65, 70,

3、74, 78, 83,         87, 91, 95, 99, 103, 107, 111, 115, 119, 123,         127, 131, 135, 138, 142, 146, 149, 153, 156, 160,         163, 167, 170, 173, 177, 180, 183, 186, 189, 192,   &

4、#160;     195, 198, 200, 203, 206, 208, 211, 213, 216, 218,         220, 223, 225, 227, 229, 231, 232, 234, 236, 238,         239, 241, 242, 243, 245, 246, 247, 248, 249, 250,      

5、0;  251, 251, 252, 253, 253, 254, 254, 254, 254, 254,         255, 254, 254, 254, 254, 254, 253, 253, 252, 251,         251, 250, 249, 248, 247, 246, 245, 243, 242, 241,         239, 238, 23

6、6, 234, 232, 231, 229, 227, 225, 223,         220, 218, 216, 213, 211, 208, 206, 203, 200, 198,         195, 192, 189, 186, 183, 180, 177, 173, 170, 167,         163, 160, 156, 153, 149, 146, 142

7、, 138, 135, 131,         127, 123, 119, 115, 111, 107, 103, 99, 95, 91,         87, 83, 78, 74, 70, 65, 61, 57, 53, 48,         44, 39, 35, 31, 26, 22, 17, 13, 8, 4,      

8、;   0, -4, -8, -13, -17, -22, -26, -31, -35, -39,         -44, -48, -53, -57, -61, -65, -70, -74, -78, -83,         -87, -91, -95, -99, -103, -107, -111, -115, -119, -123,         -127,

9、 -131, -135, -138, -142, -146, -149, -153, -156, -160,         -163, -167, -170, -173, -177, -180, -183, -186, -189, -192,         -195, -198, -200, -203, -206, -208, -211, -213, -216, -218,       

10、60; -220, -223, -225, -227, -229, -231, -232, -234, -236, -238,         -239, -241, -242, -243, -245, -246, -247, -248, -249, -250,         -251, -251, -252, -253, -253, -254, -254, -254, -254, -254,      

11、   -255, -254, -254, -254, -254, -254, -253, -253, -252, -251,         -251, -250, -249, -248, -247, -246, -245, -243, -242, -241,         -239, -238, -236, -234, -232, -231, -229, -227, -225, -223,    

12、60;    -220, -218, -216, -213, -211, -208, -206, -203, -200, -198,         -195, -192, -189, -186, -183, -180, -177, -173, -170, -167,         -163, -160, -156, -153, -149, -146, -142, -138, -135, -131,   

13、      -127, -123, -119, -115, -111, -107, -103, -99, -95, -91,         -87, -83, -78, -74, -70, -65, -61, -57, -53, -48,         -44, -39, -35, -31, -26, -22, -17, -13, -8, -4    ; 

14、0;      /* 透明 */       public static int TRANSPARENT = 0;        /* 不透明 */       public static int OPAQUE = 15;        /*     

15、;     * 像素值         * 包含动画帧，主下标标识动画帧数，副下标的值代表像素值         */       public short pixels;        /*      

16、60;  * 精灵的宽度         * 该版本默认精灵各个帧的宽度一样大小         */       public short width;        /*         * 精灵的高度 &

17、#160;       * 该版本默认精灵各个帧的高度一样大小         */       public short height;        /*         * 动画帧数     &

18、#160;   */       public byte numOfFrame;        /*         * 当前动画帧数         */       public int curFrame; 

19、0;      /*         * 构造函数         * 确保传入的各个值为合理的值         * 使用的话请自己做判断         * param _pixels 动画的像素值  &#

20、160;      * param _width 宽度         * param _height 高度         */       public Sprite(short _pixels, short _width, short _height)      

21、        pixels = _pixels;              width = _width;              height = _height;        &#

22、160;     numOfFrame = (byte)_pixels.length;              curFrame = 0;              /*        * 构造函数   &#

23、160;    */       public Sprite()               /*         * 投影         * param cData    &#

24、160;    * param l         * param i1         * param j1         * param k1         * return     

25、0;   */       private final short project(short cData, int l, int i1, int j1, int k1)               int j3 = (j1 & 0xffff) >> 8;         

26、60;    int k3 = (k1 & 0xffff) >> 8;              int l3 = (256 - j3) * (256 - k3);              int i4 = j3 * (256 - k3);    

27、          int j4 = (256 - j3) * k3;              int k4 = j3 * k3;              int l2 = j1 >> 16;   

28、60;          int i3 = k1 >> 16;              l2 %= l;              i3 %= i1;       &

29、#160;      i3 *= l;              short word0 = cDatal2 + i3;              short word2 = cData(l2 + (i3 + l) % (cData.length - 1);  

30、0;           l2 = +l2 % l;              short word1 = cDatal2 + i3;              short word3 = cData(l2 + (i3 + l) % (cD

31、ata.length - 1);              int l1 = word0 >> 12 & 0xf;              int i2 = word1 >> 12 & 0xf;        

32、0;     int j2 = word2 >> 12 & 0xf;              int k2 = word3 >> 12 & 0xf;              int k5 = l1 * l3 + i2 * i4 + j2 * j4 + k2

33、 * k4 >> 16;              l1 = word0 >> 8 & 0xf;              i2 = word1 >> 8 & 0xf;          

34、    j2 = word2 >> 8 & 0xf;              k2 = word3 >> 8 & 0xf;              int l4 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;

35、              l1 = word0 >> 4 & 0xf;              i2 = word1 >> 4 & 0xf;             

36、 j2 = word2 >> 4 & 0xf;              k2 = word3 >> 4 & 0xf;              int i5 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;   

37、           l1 = word0 & 0xf;              i2 = word1 & 0xf;              j2 = word2 & 0xf;   

38、           k2 = word3 & 0xf;              int j5 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;              r

39、eturn (short) (k5 << 12) + (l4 << 8) + (i5 << 4) + j5);               /*         * 翻转         * param count 在360度内翻转的个数   

40、      * return 返回一个翻转后的精灵         */       public Sprite rotate(int count)               Sprite sprite = new Sprite();   

41、0;          short radius = 30;              if (width = 40 && height = 40)                  

42、   radius = 57;              else if (width = 8 && height = 8)                     radius = 12;   

43、0;          else if (width = 6 && height = 12)                     radius = 14;           &#

44、160;  else if (width = 24 && height = 24)                     radius = 34;              else if (width = 26 && hei

45、ght = 26)                     radius = 27;              else if (width = 8 && height = 15)      &

46、#160;              radius = 17;              else if (width = 10 && height = 16)             

47、0;       radius = 19;              else if (width = 11 && height = 15)                     radius

48、 = 19;        else                     System.out.println("Wrong size: " + width + "  " + width + "  "    

49、;                               + count);              sprite.width = radius; &#

50、160;            sprite.height = radius;              sprite.numOfFrame = (byte)count;              sprite.pixels =

51、new shortcount;              for (int j1 = 0; j1 < count; j1+)                      sprite.pixelsj1 = new shortsprite.width * sprite

52、.height;                     int k1 = j1 * (360 / count);                      short l1 = width

53、;                     short i2 = height;                     width = sprite.width;   

54、                  height = sprite.height;                     int j2 = width / 2;     

55、0;               int k2 = l1 / 2;                     int l2 = i2 / 2;          

56、           int i3 = SIN_TABLEk1 % 360 << 8;                     int j3 = SIN_TABLE(k1 + 90) % 360 << 8;      

57、;               int k4 = 0;                     int i4 = -j2 * j3;          

58、0;          int j4 = -j2 * i3;                     for (int l4 = 0; l4 < sprite.pixelsj1.length; l4+)        

59、60;                   sprite.pixelsj1l4 = (short) (TRANSPARENT << 12);                     for (int i5 =

60、 0; i5 < height; i5+)                             int k3 = -j2 * j3;               

61、0;            int l3 = -j2 * i3;                            for (int j5 = 0; j5 < width; j5+)   &

62、#160;                                /x                 

63、0;                 int k5 = (k3 - j4 >> 16) + k2;                           

64、60;       /y                                   int l5 = (i4 + l3 >> 16) + l2;   

65、;                                if (k5 >= 0 && l5 >= 0 && l5 < i2 && k5 < l1)     &

66、#160;                                    sprite.pixelsj1k4 = project(pixels0, l1, i2,      

67、0;                                                 (k3 - j4)

68、 + (k2 << 16), i4 + l3 + (l2 << 16);                                   k3 += j3;      &#

69、160;                            l3 += i3;                    

70、0;              k4+;                                    

71、0;                   i4 += j3;                            j4 += i3; &#

72、160;                          k4 -= width;                      &

73、#160;     k4 += sprite.width;                                          height =

74、i2;                     width = l1;                            return

75、sprite;               /*         * 绘制精灵         * 在这里实现了Nokia的特有API         * 大家可以扩展该方法    

76、0;    * param g         * param x          * param y         * param manipulate         */      

77、; public void draw(Graphics g, int x, int y, int manipulate)               drawPixels(g, true, 0, width, x, y, width,                   

78、0;        height, manipulate, 4444);              public void drawPixels(Graphics g, boolean transparency,                

79、60;    int offset, int scanlength, int x, int y, int width, int height,                     int manipulation, int format)           

80、60;   int l1 = map2Manipulation(manipulation);              int j1;              int k1;            

81、  if (l1 & 4) != 0)                      j1 = height;                     k1 = width; 

82、             else                      j1 = width;               

83、      k1 = height;                            short newPixels = new short j1 * k1;          

84、60;   if(manipulation = 0)                 newPixels = pixelscurFrame;                      else  &#

85、160;           for (int i2 = 0; i2 < k1; i2+)                      for (int j2 = 0; j2 < j1; j2+)        

86、0;                    int j = j2;                            int k = i

87、2;                            if (l1 & 1) != 0)                   

88、                j = j1 - 1 - j;                            if (l1 & 2) != 0) 

89、0;                                 k = k1 - 1 - k;               

90、             if (l1 & 4) != 0)                                   

91、int k2 = j;                                   j = k;             

92、                      k = k2;                           

93、60;                           newPixelsj1 * i2 + j2 = pixelscurFramewidth * k + j;              

94、0;                                  int off = offset;              int vw = x +

95、j1;              int vh = y + k1;              for(int idy = y; idy < vh; idy+)              

96、0;      int voff = off;                     for(int idx = x; idx < vw; idx+)                

97、            short pixel = newPixelsvoff+;                             int k3 = idx;   

98、0;             for(; idx < vw - 1 && newPixelsvoff = pixel; voff+)                           &

99、#160;        idx+;                  if(pixel >> 12 & 0xff) != 0)                  

100、60;                   int l3 = 0xf0 & pixel << 4;                     l3 |= 0xf000 & pixel << 8;