Example usage for java.lang Math floor

Introduction

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

Prototype

public static double floor(double a)

Source Link

Document

Returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer.

Usage

From source file:Main.java

/**
 * Take a universal time between 0 and 24 and return a triple
 * [hours, minutes, seconds].//  w  w w.  j  a v a2  s.  co  m
 * 
 * @param ut Universal time - presumed to be between 0 and 24.
 * @return [hours, minutes, seconds]
 */
public static int[] clockTimeFromHrs(double ut) {
    int[] hms = new int[3];
    hms[0] = (int) Math.floor(ut);
    double remainderMins = 60 * (ut - hms[0]);
    hms[1] = (int) Math.floor(remainderMins);
    hms[2] = (int) Math.floor(remainderMins - hms[1]);
    return hms;
}

From source file:Main.java

/**
 * <p>// w  w  w . ja v a2  s .c o m
 * getCenter.
 * </p>
 *
 * @param component
 *            a {@link java.awt.Component} object.
 * @return a {@link java.awt.Point} object.
 */
public static Point getCenter(final Component component) {
    final Point point = component.getLocation();
    point.translate( //
            (int) Math.floor((component.getWidth() + 0.5) / 2.0), //
            (int) Math.floor((component.getHeight() + 0.5) / 2.0));
    return point;
}

From source file:Main.java

private static int[] hsvToRgb(double h, double s, double v) {
    double r = 0, g = 0, b = 0;
    double i = (int) Math.floor(h * 6);
    double f = h * 6 - i;
    double p = v * (1 - s);
    double q = v * (1 - f * s);
    double t = v * (1 - (1 - f) * s);
    switch ((int) i % 6) {
    case 0:/* www  .  j  av a  2s.  c  o m*/
        r = v;
        g = t;
        b = p;
        break;
    case 1:
        r = q;
        g = v;
        b = p;
        break;
    case 2:
        r = p;
        g = v;
        b = t;
        break;
    case 3:
        r = p;
        g = q;
        b = v;
        break;
    case 4:
        r = t;
        g = p;
        b = v;
        break;
    case 5:
        r = v;
        g = p;
        b = q;
        break;
    }
    return new int[] { (int) (r * 255), (int) (g * 255), (int) (b * 255) };
}

From source file:Main.java

static String formatLatLon(double latLon, char positiveDirection, char negativeDirection) {
    boolean isPositive = (latLon >= 0.0);
    double absLatLon = Math.abs(latLon);
    if (absLatLon > 180.0) {
        return "?";
    }/*  w ww .  ja  va  2s  . c o m*/
    double degrees = Math.floor(absLatLon);
    double degreeRemainder = absLatLon - degrees;
    double minutesAndSeconds = 60.0 * degreeRemainder;
    double minutes = Math.floor(minutesAndSeconds);
    double minuteRemainder = minutesAndSeconds - minutes;
    double seconds = 60.0 * minuteRemainder;

    return String.format(Locale.US, "%.0f\u00b0 %.0f\' %.3f\" %c", degrees, minutes, seconds,
            isPositive ? positiveDirection : negativeDirection);

}

From source file:Main.java

public static double parseNmeaFormat(String degrees, String direction) {

    double latlong = 0.0;
    double temp1 = Double.parseDouble(degrees);
    double temp2 = Math.floor(temp1 / 100);
    double temp3 = (temp1 / 100 - temp2) / 0.6;

    if (DIRECTION_SOUTH.equals(direction) || DIRECTION_WEST.equals(direction)) {
        latlong = -(temp2 + temp3);// w ww  .  j a v a2s.c o m
    } else if (DIRECTION_NORTH.equals(direction) || DIRECTION_EAST.equals(direction)) {
        latlong = (temp2 + temp3);
    }

    return latlong;
}

From source file:Main.java

public static int getFibonacciSeq(long f) {
    return (int) Math.floor(Math.log(f * sqrt(5) + 0.5) / Math.log(GOLDEN_RATIO));
}

From source file:Main.java

public static int randomInt(int upto) {

    int number;//ww w.j ava 2s  .  co  m

    number = (int) Math.floor(Math.random() * upto);

    return number;
}

From source file:Main.java

/**
 * Build an set.//from ww w  . j  a  v  a  2s. c  om
 * 
 * @param values
 *            Values to be added in a set.
 * @return A set containing all given values.
 */
@SafeVarargs
public static <T> Set<T> asSet(T... values) {
    if (values == null || values.length == 0) {
        return Collections.emptySet();
    } else {
        // A lit bit higher than load factor
        int size = (int) Math.floor(values.length * 1.4);
        Set<T> set = new HashSet<>(size);
        for (T value : values) {
            set.add(value);
        }

        return set;
    }
}

From source file:Main.java

public static String doubleToString(double value) {
    return Double.toString(Math.floor(value * 10000.0 + 0.5) / 10000.0);
}

From source file:Main.java

private static int computeInitialSampleSize(BitmapFactory.Options options,

        int minSideLength, int maxNumOfPixels) {

    double w = options.outWidth;

    double h = options.outHeight;

    int lowerBound = (maxNumOfPixels == -1) ? 1 :

            (int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels));

    int upperBound = (minSideLength == -1) ? 128 :

            (int) Math.min(Math.floor(w / minSideLength),

                    Math.floor(h / minSideLength));

    if (upperBound < lowerBound) {

        // return the larger one when there is no overlapping zone.

        return lowerBound;

    }//from   w ww .  j  a  v  a 2s.com

    if ((maxNumOfPixels == -1) &&

            (minSideLength == -1)) {

        return 1;

    } else if (minSideLength == -1) {

        return lowerBound;

    } else {

        return upperBound;

    }
}