Example usage for java.lang Math round

Introduction

In this page you can find the example usage for java.lang Math round.

Prototype

public static long round(double a)

Source Link

Document

Returns the closest long to the argument, with ties rounding to positive infinity.

Usage

From source file:Main.java

public static double convertTempCelsius(double temp) {
    return Math.round(temp - 273.15);
}

From source file:Main.java

public static int fromDPToPix(Context context, int dp) {
    return Math.round(getDensity(context) * dp);
}

From source file:Main.java

public static File downSample(Context context, Uri uri) throws Exception {
    Bitmap b = null;//w  w  w .  j a v a2 s . c o m

    //Decode image size
    BitmapFactory.Options o = new BitmapFactory.Options();
    o.inJustDecodeBounds = true;

    int scale = 1;
    if (o.outHeight > MAX_SIZE || o.outWidth > MAX_SIZE) {
        scale = (int) Math.pow(2, (int) Math
                .round(Math.log(MAX_SIZE / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
    }

    //Decode with inSampleSize
    BitmapFactory.Options o2 = new BitmapFactory.Options();
    o2.inSampleSize = scale;
    InputStream is = context.getContentResolver().openInputStream(uri);
    b = BitmapFactory.decodeStream(is, null, o2);
    is.close();

    File outputDir = context.getCacheDir();
    File outputFile = File.createTempFile("avatar", ".jpg", outputDir);
    FileOutputStream fos = new FileOutputStream(outputFile);
    b.compress(Bitmap.CompressFormat.JPEG, 80, fos);
    fos.close();

    return outputFile;
}

From source file:Main.java

private static byte generateSimple(int step, float freq, int samplingRate) {
    int sign = (int) Math.round(step * freq / samplingRate) % 2;
    return (byte) ((sign == 0) ? 100 : -100);
}

From source file:Main.java

public static Bitmap decodeFile(File f, int maxSize) {
    Bitmap b = null;// ww  w .j av  a 2s .co m
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;

        FileInputStream fis = new FileInputStream(f);
        BitmapFactory.decodeStream(fis, null, o);
        fis.close();

        int scale = 1;
        if (o.outHeight > maxSize || o.outWidth > maxSize) {
            scale = (int) Math.pow(2, (int) Math
                    .round(Math.log(maxSize / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
        }

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        fis = new FileInputStream(f);
        b = BitmapFactory.decodeStream(fis, null, o2);
        fis.close();
    } catch (IOException e) {
    }
    return b;
}

From source file:Main.java

public static int dpToPixel(int dp) {
    return Math.round(sPixelDensity * dp);
}

From source file:Main.java

public static void centralizeComponent(Component component, Component otherComponent) {

    Dimension othersDimension = null;
    Point othersLocation = null;/*from  w  w  w  .j  a  v a2 s  .  c o  m*/
    if (otherComponent == null || !otherComponent.isVisible()) {
        othersDimension = Toolkit.getDefaultToolkit().getScreenSize();
        othersLocation = new Point(0, 0);
    } else {
        othersDimension = otherComponent.getSize();
        othersLocation = otherComponent.getLocation();
    }
    Point centerPoint = new Point(
            (int) Math.round(othersDimension.width / HALF - component.getWidth() / HALF) + othersLocation.x,
            (int) Math.round(othersDimension.height / HALF - component.getHeight() / HALF) + othersLocation.y);
    component.setLocation(centerPoint);
}

From source file:Main.java

/**
 * Scale down the bitmap in order to make color analysis faster. Taken from Palette.
 *//*w w  w  .  j  av  a  2 s.  co  m*/
private static Bitmap scaleBitmapDown(@NonNull Bitmap bitmap) {
    final int CALCULATE_BITMAP_MIN_DIMENSION = 100;
    final int minDimension = Math.min(bitmap.getWidth(), bitmap.getHeight());

    if (minDimension <= CALCULATE_BITMAP_MIN_DIMENSION) {
        // If the bitmap is small enough already, just return it
        return bitmap;
    }

    final float scaleRatio = CALCULATE_BITMAP_MIN_DIMENSION / (float) minDimension;
    return Bitmap.createScaledBitmap(bitmap, Math.round(bitmap.getWidth() * scaleRatio),
            Math.round(bitmap.getHeight() * scaleRatio), false);
}

From source file:Main.java

public static int pxToDp(Context context, int px) {
    int dp = Math.round(px / getPixelScaleFactor(context));
    return dp;//ww w .  j  a v a2 s  .com
}

From source file:Main.java

public static int dpToPx(Context context, int dp) {
    int px = Math.round(dp * getPixelScaleFactor(context));
    return px;//from   w  w  w .  j a  va2 s.co  m
}