List of usage examples for java.lang Math round
public static long round(double a)
From source file:Main.java
/** * http://stackoverflow.com/questions/2067955/fast-bitmap-blur-for-android-sdk * http://incubator.quasimondo.com//*from w ww.ja v a 2 s .c o m*/ * * @param sentBitmap * @param scale * @param radius * @return */ public static Bitmap fastBlur(Bitmap sentBitmap, float scale, int radius) { int width = Math.round(sentBitmap.getWidth() * scale); int height = Math.round(sentBitmap.getHeight() * scale); sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false); Bitmap img = sentBitmap.copy(sentBitmap.getConfig(), true); if (radius < 1) { return null; } int w = img.getWidth(); int h = img.getHeight(); int[] pix = new int[w * h]; img.getPixels(pix, 0, w, 0, 0, w, h); int wm = w - 1; int hm = h - 1; int wh = w * h; int div = radius + radius + 1; int r[] = new int[wh]; int g[] = new int[wh]; int b[] = new int[wh]; int rsum, gsum, bsum, x, y, i, p, yp, yi, yw; int vmin[] = new int[Math.max(w, h)]; int divsum = (div + 1) >> 1; divsum *= divsum; int dv[] = new int[256 * divsum]; for (i = 0; i < 256 * divsum; i++) { dv[i] = (i / divsum); } yw = yi = 0; int[][] stack = new int[div][3]; int stackpointer; int stackstart; int[] sir; int rbs; int r1 = radius + 1; int routsum, goutsum, boutsum; int rinsum, ginsum, binsum; for (y = 0; y < h; y++) { rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; for (i = -radius; i <= radius; i++) { p = pix[yi + Math.min(wm, Math.max(i, 0))]; sir = stack[i + radius]; sir[0] = (p & 0xff0000) >> 16; sir[1] = (p & 0x00ff00) >> 8; sir[2] = (p & 0x0000ff); rbs = r1 - Math.abs(i); rsum += sir[0] * rbs; gsum += sir[1] * rbs; bsum += sir[2] * rbs; if (i > 0) { rinsum += sir[0]; ginsum += sir[1]; binsum += sir[2]; } else { routsum += sir[0]; goutsum += sir[1]; boutsum += sir[2]; } } stackpointer = radius; for (x = 0; x < w; x++) { r[yi] = dv[rsum]; g[yi] = dv[gsum]; b[yi] = dv[bsum]; rsum -= routsum; gsum -= goutsum; bsum -= boutsum; stackstart = stackpointer - radius + div; sir = stack[stackstart % div]; routsum -= sir[0]; goutsum -= sir[1]; boutsum -= sir[2]; if (y == 0) { vmin[x] = Math.min(x + radius + 1, wm); } p = pix[yw + vmin[x]]; sir[0] = (p & 0xff0000) >> 16; sir[1] = (p & 0x00ff00) >> 8; sir[2] = (p & 0x0000ff); rinsum += sir[0]; ginsum += sir[1]; binsum += sir[2]; rsum += rinsum; gsum += ginsum; bsum += binsum; stackpointer = (stackpointer + 1) % div; sir = stack[(stackpointer) % div]; routsum += sir[0]; goutsum += sir[1]; boutsum += sir[2]; rinsum -= sir[0]; ginsum -= sir[1]; binsum -= sir[2]; yi++; } yw += w; } for (x = 0; x < w; x++) { rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; yp = -radius * w; for (i = -radius; i <= radius; i++) { yi = Math.max(0, yp) + x; sir = stack[i + radius]; sir[0] = r[yi]; sir[1] = g[yi]; sir[2] = b[yi]; rbs = r1 - Math.abs(i); rsum += r[yi] * rbs; gsum += g[yi] * rbs; bsum += b[yi] * rbs; if (i > 0) { rinsum += sir[0]; ginsum += sir[1]; binsum += sir[2]; } else { routsum += sir[0]; goutsum += sir[1]; boutsum += sir[2]; } if (i < hm) { yp += w; } } yi = x; stackpointer = radius; for (y = 0; y < h; y++) { pix[yi] = 0xff000000 | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum]; rsum -= routsum; gsum -= goutsum; bsum -= boutsum; stackstart = stackpointer - radius + div; sir = stack[stackstart % div]; routsum -= sir[0]; goutsum -= sir[1]; boutsum -= sir[2]; if (x == 0) { vmin[y] = Math.min(y + r1, hm) * w; } p = x + vmin[y]; sir[0] = r[p]; sir[1] = g[p]; sir[2] = b[p]; rinsum += sir[0]; ginsum += sir[1]; binsum += sir[2]; rsum += rinsum; gsum += ginsum; bsum += binsum; stackpointer = (stackpointer + 1) % div; sir = stack[stackpointer]; routsum += sir[0]; goutsum += sir[1]; boutsum += sir[2]; rinsum -= sir[0]; ginsum -= sir[1]; binsum -= sir[2]; yi += w; } } img.setPixels(pix, 0, w, 0, 0, w, h); return img; }
From source file:Main.java
private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { int height = options.outHeight; int width = options.outWidth; int inSampleSize = 1; if (width < MIN_WIDTH) { return inSampleSize; } else {// ww w . j a v a2 s. c o m int heightRatio; if (width > height && reqWidth < reqHeight || width < height && reqWidth > reqHeight) { heightRatio = reqWidth; reqWidth = reqHeight; reqHeight = heightRatio; } if (height > reqHeight || width > reqWidth) { heightRatio = Math.round((float) height / (float) reqHeight); int widthRatio = Math.round((float) width / (float) reqWidth); inSampleSize = heightRatio < widthRatio ? widthRatio : heightRatio; } return inSampleSize; } }
From source file:Main.java
private static double xyz_rgb(double r) { return Math.round(255 * (r <= 0.00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - 0.055)); }
From source file:Main.java
public static int round(Context context, int paramInt) { return Math.round(paramInt / getDensity(context)); }
From source file:Main.java
public static int foldStart(int length, int numberOfFolds, int fold) { return Math.round((length / ((float) numberOfFolds)) * ((float) fold - 1)); }
From source file:Main.java
static public long getHeadWindComponent(double windSpeed, double windDir, double d) { return Math.round(windSpeed * Math.cos(Math.toRadians(windDir - d))); }
From source file:Main.java
static public long getCrossWindComponent(double windSpeed, double windDir, double d) { return Math.round(windSpeed * Math.sin(Math.toRadians(windDir - d))); }
From source file:Main.java
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { final int heightRatio = Math.round((float) height / (float) reqHeight); final int widthRatio = Math.round((float) width / (float) reqWidth); inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio; }//from w ww . j ava2 s .com return inSampleSize; }
From source file:Main.java
public static int getMatchingThresholdFromString(String value) throws ParseException { char percent = new DecimalFormatSymbols().getPercent(); value = value.replace(percent, ' '); Number number = NumberFormat.getNumberInstance().parse(value); double parse = number.doubleValue(); double p = Math.log10(Math.max(Double.MIN_VALUE, Math.min(1, parse / 100))); return Math.max(0, (int) Math.round(-12 * p)); }
From source file:Main.java
@SuppressLint("NewApi") @SuppressWarnings("deprecation") public static long getExternalStorageFreeMemory() { StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath()); double sdAvailSize; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) { sdAvailSize = (double) stat.getAvailableBlocksLong() * (double) stat.getBlockSizeLong(); } else {// w ww.j ava 2 s . co m sdAvailSize = (double) stat.getAvailableBlocks() * (double) stat.getBlockSize(); } return Math.round(sdAvailSize / SIZE_MB); }