List of usage examples for java.lang Math round
public static long round(double a)
From source file:Main.java
private static Drawable getMoreSuggestionsHint(final Resources res, final float textSize, final int color) { final Paint paint = new Paint(); paint.setAntiAlias(true);/*from w w w . j av a 2 s .c om*/ paint.setTextAlign(Align.CENTER); paint.setTextSize(textSize); paint.setColor(color); final Rect bounds = new Rect(); paint.getTextBounds(MORE_SUGGESTIONS_HINT, 0, MORE_SUGGESTIONS_HINT.length(), bounds); final int width = Math.round(bounds.width() + 0.5f); final int height = Math.round(bounds.height() + 0.5f); final Bitmap buffer = Bitmap.createBitmap(width, (height * 3 / 2), Bitmap.Config.ARGB_8888); final Canvas canvas = new Canvas(buffer); canvas.drawText(MORE_SUGGESTIONS_HINT, width / 2, height, paint); BitmapDrawable bitmapDrawable = new BitmapDrawable(res, buffer); bitmapDrawable.setTargetDensity(canvas); return bitmapDrawable; }
From source file:Main.java
/** * For a string containing a number delta as judged by * <code>isNumberDelta()</code>, return the numerical value, rounded to * an integer./* ww w .j a va2 s.c o m*/ * * @return the numeric value, rounded to an integer, or 0 * if the string is not a valid number delta. */ public static int getNumberDelta(String string) { String s = string.trim(); if (!isNumberDelta(s)) return 0; double value = 0; try { value = Double.parseDouble(s); } catch (NumberFormatException e) { //logger.warn("Unexpected number value `" + s + "'"); } return (int) Math.round(value); }
From source file:Main.java
/** * For a string containing an unsigned number as judged by * <code>isUnsignedNumber()</code>, return the numerical value, rounded to * an integer.//from w ww . j a v a2s . c om * * @return the numeric value, rounded to an integer, or 0 * if the string is not a valid unsigned number. */ public static int getUnsignedNumber(String string) { String s = string.trim(); if (!isUnsignedNumber(s)) return 0; double value = 0; try { value = Double.parseDouble(s); } catch (NumberFormatException e) { //logger.warn("Unexpected number value `" + s + "'"); } return (int) Math.round(value); }
From source file:Main.java
/** * Convert XYZ to RGB.//ww w .ja v a 2 s.co m * * @param X * @param Y * @param Z * @return RGB in int array. */ public static int[] XYZtoRGB(double X, double Y, double Z) { int[] result = new int[3]; double x = X / 100.0; double y = Y / 100.0; double z = Z / 100.0; // [r g b] = [X Y Z][Mi] double r = (x * Mi[0][0]) + (y * Mi[0][1]) + (z * Mi[0][2]); double g = (x * Mi[1][0]) + (y * Mi[1][1]) + (z * Mi[1][2]); double b = (x * Mi[2][0]) + (y * Mi[2][1]) + (z * Mi[2][2]); // assume sRGB if (r > 0.0031308) { r = ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055); } else { r = (r * 12.92); } if (g > 0.0031308) { g = ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055); } else { g = (g * 12.92); } if (b > 0.0031308) { b = ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055); } else { b = (b * 12.92); } r = (r < 0) ? 0 : r; g = (g < 0) ? 0 : g; b = (b < 0) ? 0 : b; // convert 0..1 into 0..255 result[0] = (int) Math.round(r * 255); result[1] = (int) Math.round(g * 255); result[2] = (int) Math.round(b * 255); return result; }
From source file:Main.java
/** * See <a href=/*from w w w.j a va 2s.c om*/ * "http://apache-poi.1045710.n5.nabble.com/Excel-Column-Width-Unit-Converter-pixels-excel-column-width-units-td2301481.html" * >here</a> for Xio explanation and details */ public static int getColumnWidthInPx(int widthUnits) { int pixels = (widthUnits / EXCEL_COLUMN_WIDTH_FACTOR) * UNIT_OFFSET_LENGTH; int offsetWidthUnits = widthUnits % EXCEL_COLUMN_WIDTH_FACTOR; pixels += Math.round(offsetWidthUnits / ((float) EXCEL_COLUMN_WIDTH_FACTOR / UNIT_OFFSET_LENGTH)); return pixels; }
From source file:Main.java
/** * Calculate an inSampleSize for use in a * {@link BitmapFactory.Options} object when decoding * bitmaps using the decode* methods from * {@link BitmapFactory}. This implementation calculates * the closest inSampleSize that will result in the final decoded bitmap * having a width and height equal to or larger than the requested width and * height. This implementation does not ensure a power of 2 is returned for * inSampleSize which can be faster when decoding but results in a larger * bitmap which isn't as useful for caching purposes. * * @param options An options object with out* params already populated (run * through a decode* method with inJustDecodeBounds==true * @param reqWidth The requested width of the resulting bitmap * @param reqHeight The requested height of the resulting bitmap * @return The value to be used for inSampleSize *///from w w w . j a v a 2 s.c o m public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { // Raw height and width of image final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { int widthSampleSize = 0; int heightSampleSize = 0; if (reqWidth < width) { widthSampleSize = Math.round((float) width / (float) reqWidth); } if (reqHeight < height) { heightSampleSize = Math.round((float) height / (float) reqHeight); } inSampleSize = Math.max(widthSampleSize, heightSampleSize); } return inSampleSize; }
From source file:org.zilverline.util.Utils.java
/** * Picks a random number between 0 and (below) the givenNumber. * /*from w w w .j a va2s .c om*/ * @param number the givenNumber * * @return a number n: 0 <= n < givenNumber */ public static int pickOne(final int number) { return (int) Math.round(Math.random() * (double) (number - 1)); }
From source file:Main.java
public static int calculateInSampleSize(Activity context, int outWidth, int outHeight) { int screenWidth = context.getWindowManager().getDefaultDisplay().getWidth(); int screenHeight = context.getWindowManager().getDefaultDisplay().getHeight(); int be;/* w w w. jav a 2 s .c o m*/ if (outWidth > screenWidth || outHeight > 1.5 * screenHeight) { int heightRatio = Math.round(((float) outHeight) / ((float) 1.5 * screenHeight)); int widthRatio = Math.round(((float) outWidth) / ((float) screenWidth)); int sample = heightRatio > widthRatio ? heightRatio : widthRatio; if (sample < 3) be = sample; else if (sample < 6.5) be = 4; else if (sample < 8) be = 8; else be = sample; } else { be = 1; } if (be <= 0) { be = 1; } return be; }
From source file:Util.java
/** * Retrive the quartile value from an array * ./*from ww w . j a v a2 s . co m*/ * @param values THe array of data * @param lowerPercent The percent cut off. For the lower quartile use 25, * for the upper-quartile use 75 * @return */ public static double quartile(double[] values, double lowerPercent) { if (values == null || values.length == 0) { throw new IllegalArgumentException("The data array either is null or does not contain any data."); } // Rank order the values double[] v = new double[values.length]; System.arraycopy(values, 0, v, 0, values.length); Arrays.sort(v); int n = (int) Math.round(v.length * lowerPercent / 100); return v[n]; }
From source file:visual.FinalToolTipChartState.java
@Override public String generateToolTip(XYDataset xyd, int i, int i1) { String s = Double.toString((double) Math.round(xyd.getYValue(i, i1) * 100000) / 100000); String actName = svc.getActionNameFor(i1); return actName + " (" + String.valueOf(i1) + ", " + s + ")"; }