{geshibot lang="javascript"}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 {
       /** 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, 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,
        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,
        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, 236, 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, 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,
        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, -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,
        -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,
        -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,
        -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,
        -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
    };
        /** 透明 **/
       public static int TRANSPARENT = 0;
        /** 不透明 **/
       public static int OPAQUE = 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[][];
        /*
         * 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
         * 该版本默认精灵各个帧的高度一样大小
         */
       public short height;
        /*
         * 动画帧数
         */
       public byte numOfFrame;
        /*
         * 当前动画帧数
         */
       public int curFrame;
        /*
         * 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
         * @param _width 宽度
         * @param _height 高度
         */
       public Sprite(short[][] _pixels, short _width, short _height){
              pixels = _pixels;
              width = _width;
              height = _height;
              numOfFrame = (byte)_pixels.length;
              curFrame = 0;
       }
       /*
        * 构造函数
        */
       public Sprite(){
       }
        /*
         * 投影
         * @param cData
         * @param l
         * @param i1
         * @param j1
         * @param k1
         * @return
         */
       private final short project(short cData[], int l, int i1, int j1, int k1) {
              int j3 = (j1 & 0xffff) >> 8;
              int k3 = (k1 & 0xffff) >> 8;
              int l3 = (256 - j3) * (256 - k3);
              int i4 = j3 * (256 - k3);
              int j4 = (256 - j3) * k3;
              int k4 = j3 * k3;
              int l2 = j1 >> 16;
              int i3 = k1 >> 16;
              l2 %= l;
              i3 %= i1;
              i3 *= l;
              short word0 = cData[l2 + i3];
              short word2 = cData[(l2 + (i3 + l)) % (cData.length - 1)];
              l2 = ++l2 % l;
              short word1 = cData[l2 + i3];
              short word3 = cData[(l2 + (i3 + l)) % (cData.length - 1)];
              int l1 = word0 >> 12 & 0xf;
              int i2 = word1 >> 12 & 0xf;
              int j2 = word2 >> 12 & 0xf;
              int k2 = word3 >> 12 & 0xf;
              int k5 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;
              l1 = word0 >> 8 & 0xf;
              i2 = word1 >> 8 & 0xf;
              j2 = word2 >> 8 & 0xf;
              k2 = word3 >> 8 & 0xf;
              int l4 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;
              l1 = word0 >> 4 & 0xf;
              i2 = word1 >> 4 & 0xf;
              j2 = word2 >> 4 & 0xf;
              k2 = word3 >> 4 & 0xf;
              int i5 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;
              l1 = word0 & 0xf;
              i2 = word1 & 0xf;
              j2 = word2 & 0xf;
              k2 = word3 & 0xf;
              int j5 = l1 * l3 + i2 * i4 + j2 * j4 + k2 * k4 >> 16;
              return (short) ((k5 << 12) + (l4 << 8) + (i5 << 4) + j5);
       }
        /*
         * 翻转
         * @param count 在360度内翻转的个数
         * @return 返回一个翻转后的精灵
         */
       public Sprite rotate(int count) {
              Sprite sprite = new Sprite();
              short radius = 30;
              if (width == 40 && height == 40)
                     radius = 57;
              else if (width == 8 && height == 8)
                     radius = 12;
              else if (width == 6 && height == 12)
                     radius = 14;
              else if (width == 24 && height == 24)
                     radius = 34;
              else if (width == 26 && height == 26)
                     radius = 27;
              else if (width == 8 && height == 15)
                     radius = 17;
              else if (width == 10 && height == 16)
                     radius = 19;
              else if (width == 11 && height == 15)
                     radius = 19;
        else
                     System.out.println("Wrong size: " + width + "  " + width + "  "
                                   + count);
              sprite.width = radius;
              sprite.height = radius;
              sprite.numOfFrame = (byte)count;
              sprite.pixels = new short[count][];
              for (int j1 = 0; j1 < count; j1++) {
                     sprite.pixels[j1] = new short[sprite.width * sprite.height];
                     int k1 = j1 * (360 / count);
                      short l1 = width;
                     short i2 = height;
                     width = sprite.width;
                     height = sprite.height;
                     int j2 = width / 2;
                     int k2 = l1 / 2;
                     int l2 = i2 / 2;
                     int i3 = SIN_TABLE[k1 % 360] << 8;
                     int j3 = SIN_TABLE[(k1 + 90) % 360] << 8;
                     int k4 = 0;
                     int i4 = -j2 * j3;
                     int j4 = -j2 * i3;
                     for (int l4 = 0; l4 < sprite.pixels[j1].length; l4++)
                            sprite.pixels[j1][l4] = (short) (TRANSPARENT << 12);
                     for (int i5 = 0; i5 < height; i5++) {
                            int k3 = -j2 * j3;
                            int l3 = -j2 * i3;
                            for (int j5 = 0; j5 < width; j5++) {
                                   //x
                                   int k5 = (k3 - j4 >> 16) + k2;
                                   //y
                                   int l5 = (i4 + l3 >> 16) + l2;
                                   if (k5 >= 0 && l5 >= 0 && l5 < i2 && k5 < l1)
                                          sprite.pixels[j1][k4] = project(pixels[0], l1, i2,
                                                        (k3 - j4) + (k2 << 16), i4 + l3 + (l2 << 16));
                                   k3 += j3;
                                   l3 += i3;
                                   k4++;
                            }
                            i4 += j3;
                            j4 += i3;
                            k4 -= width;
                            k4 += sprite.width;
                     }
                     height = i2;
                     width = l1;
              }
              return 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
         * @param g
         * @param x
         * @param y
         * @param manipulate
         */
       public void draw(Graphics g, int x, int y, int manipulate) {
              drawPixels(g, true, 0, width, x, y, width,
                            height, manipulate, 4444);
       }
       public void drawPixels(Graphics g, boolean transparency,
                     int offset, int scanlength, int x, int y, int width, int height,
                     int manipulation, int format) {
              int l1 = map2Manipulation(manipulation);
              int j1;
              int k1;
              if ((l1 & 4) != 0) {
                     j1 = height;
                     k1 = width;
              } else {
                     j1 = width;
                     k1 = height;
              }
              short newPixels[] = new short [j1 * k1];
              if(manipulation == 0){
                 newPixels = pixels[curFrame];
              }
        else
              for (int i2 = 0; i2 < k1; i2++) {
                     for (int j2 = 0; j2 < j1; j2++) {
                            int j = j2;
                            int k = i2;
                            if ((l1 & 1) != 0)
                                   j = j1 - 1 - j;
                            if ((l1 & 2) != 0)
                                   k = k1 - 1 - k;
                            if ((l1 & 4) != 0) {
                                   int k2 = j;
                                   j = k;
                                   k = k2;
                            }
                            newPixels[j1 * i2 + j2] = pixels[curFrame][width * k + j];
                     }
              }
              int off = offset;
              int vw = x + j1;
              int vh = y + k1;
              for(int idy = y; idy < vh; idy++){
                     int voff = off;
                     for(int idx = x; idx < vw; idx++){
                            short pixel = newPixels[voff++];
                             int k3 = idx;
                 for(; idx < vw - 1 && newPixels[voff] == pixel; voff++)
                                    idx++;
                 if((pixel >> 12 & 0xff) != 0)
                 {
                     int l3 = 0xf0 & pixel << 4;
                     l3 |= 0xf000 & pixel << 8;
                     l3 |= 0xf00000 & pixel << 12;
                     g.setColor(l3);
                     g.drawLine(k3, idy, idx, idy);
                 }
                     }
                     off += j1;
              }
       }
       private static int map2Manipulation(int i) throws IllegalArgumentException {
              int j = 0;
              if ((i & 0x2000) != 0)
                     j ^= 1;
              if ((i & 0x4000) != 0)
                     j ^= 2;
              switch (i & 0xffff9fff) {
              case 90: // 'Z'
                     j ^= 6;
                     break;
              case 180:
                     j ^= 3;
                     break;
              case 270:
                     j ^= 5;
                     break;
              default:
                     throw new IllegalArgumentException();
              case 0: // '\0'
                     break;
              }
              return j;
       }
}{/geshibot}