關於android系統映像特效處理之光照效果

本人做了一個圖片瀏覽器,用了一些影像處理的演算法,這個是一部分,APK安裝包地址：http://static.apk.hiapk.com/html/2012/08/797656.html，歡迎下載和反饋；

關於android系統映像特效處理之光照效果

public static Bitmap sunshine(SoftReference<Bitmap> bmp)      {          final int width = bmp.get().getWidth();          final int height = bmp.get().getHeight();          Log.d("sunshine", "sunshine:width"+width+"height:"+height);        Bitmap bitmap = (Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565));                    int pixR = 0;          int pixG = 0;          int pixB = 0;                    int pixColor = 0;                    int newR = 0;          int newG = 0;          int newB = 0;                    int centerX = width / 2;          int centerY = height / 2;          int radius = Math.min(centerX, centerY);                    final float strength = 150F; // 光照強度 100~150          int[] pixels = new int[width * height];          bmp.get().getPixels(pixels, 0, width, 0, 0, width, height);          int pos = 0;          //        bmp.recycle();//        bmp = null;        for (int i = 1, length = height - 1; i < length; i++)          {              for (int k = 1, len = width - 1; k < len; k++)              {                              pos = i * width + k;                  pixColor = pixels[pos];                                    pixR = Color.red(pixColor);                  pixG = Color.green(pixColor);                  pixB = Color.blue(pixColor);                                    newR = pixR;                  newG = pixG;                  newB = pixB;                                    // 計算當前點到光照中心的距離，平面座標系中求兩點之間的距離  v                 int distance = (int) (Math.pow((centerY - i), 2) + Math.pow(centerX - k, 2));                  if (distance < radius * radius)                  {                      // 按照距離大小計算增加的光照值                      int result = (int) (strength * (1.0 - Math.sqrt(distance) / radius));                      newR = pixR + result;                      newG = pixG + result;                      newB = pixB + result;                  }                                    newR = Math.min(255, Math.max(0, newR));                  newG = Math.min(255, Math.max(0, newG));                  newB = Math.min(255, Math.max(0, newB));                                    pixels[pos] = Color.argb(255, newR, newG, newB);              }          }                  bitmap.setPixels(pixels, 0, width, 0, 0, width, height);          return bitmap;      }