Example usage for com.google.gwt.user.client Random nextBoolean

List of usage examples for com.google.gwt.user.client Random nextBoolean

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Introduction

In this page you can find the example usage for com.google.gwt.user.client Random nextBoolean.

Prototype

public static native boolean nextBoolean() ;

Source Link

Document

Returns true or false with roughly equal probability.

Usage

From source file:ch.unifr.pai.twice.utils.cursorSimulator.client.RandomCursor.java

License:Apache License

/**
 * Move the mouse pointer randomly (the mouse pointer does not move every time but decides on if to move within this interval depending on a random boolean
 * choice as well./*w ww .j a  v  a2  s .  c o m*/
 */
private void move() {
    int newX;
    int newY;
    if (Random.nextBoolean()) {
        newX = Random.nextInt(Window.getClientWidth() - RandomCursor.this.getOffsetWidth());
        newY = Random.nextInt(Window.getClientHeight() - RandomCursor.this.getOffsetHeight());
    } else {
        newX = RandomCursor.this.getAbsoluteLeft();
        newY = RandomCursor.this.getAbsoluteTop();
    }
    move(newX, newY, interval, moveCallback);
}

From source file:com.arcbees.gquery.tooltip.client.contactcell.ContactDatabase.java

License:Apache License

@SuppressWarnings("deprecation")
private ContactInfo createContactInfo() {
    // set all created contact in OTHERS category
    ContactInfo contact = new ContactInfo();
    contact.setLastName(nextValue(LAST_NAMES));
    if (Random.nextBoolean()) {
        // Male.//from   w w  w  . ja v a  2s .  c om
        contact.setFirstName(nextValue(MALE_FIRST_NAMES));
    } else {
        // Female.
        contact.setFirstName(nextValue(FEMALE_FIRST_NAMES));
    }

    // Create a birthday between 20-80 years ago.
    int year = (new Date()).getYear() - 21 - Random.nextInt(61);
    contact.setBirthday(new Date(year, Random.nextInt(12), 1 + Random.nextInt(31)));

    // Create an address.
    int addrNum = 1 + Random.nextInt(999);
    String addrStreet = nextValue(STREET_NAMES);
    String addrSuffix = nextValue(STREET_SUFFIX);
    contact.setAddress(addrNum + " " + addrStreet + " " + addrSuffix);
    return contact;
}

From source file:com.freedomotic.clients.client.widgets.ContactDatabase.java

License:Apache License

/**
 * Create a new random {@link ContactInfo}.
 *
 * @return the new {@link ContactInfo}./*from w  w  w.jav a  2  s .  com*/
 */
@SuppressWarnings("deprecation")
private ContactInfo createContactInfo() {
    ContactInfo contact = new ContactInfo(nextValue(categories));
    contact.setLastName(nextValue(LAST_NAMES));
    if (Random.nextBoolean()) {
        // Male.
        contact.setFirstName(nextValue(MALE_FIRST_NAMES));
    } else {
        // Female.
        contact.setFirstName(nextValue(FEMALE_FIRST_NAMES));
    }

    // Create a birthday between 20-80 years ago.
    int year = (new Date()).getYear() - 21 - Random.nextInt(61);
    contact.setBirthday(new Date(year, Random.nextInt(12), 1 + Random.nextInt(31)));

    // Create an address.
    int addrNum = 1 + Random.nextInt(999);
    String addrStreet = nextValue(STREET_NAMES);
    String addrSuffix = nextValue(STREET_SUFFIX);
    contact.setAddress(addrNum + " " + addrStreet + " " + addrSuffix);
    return contact;
}

From source file:com.sciencegadgets.client.algebra.ConstantRandomizer.java

License:Open Source License

private static BigDecimal getRandomNumber(String varRandomness) {

    // negative_lowerBound_upperBound_decimal place
    String[] specs = varRandomness.split(RandomSpecPanel.RANDOMNESS_DELIMITER);
    try {//w  ww .  j a  va  2  s  .  c  o m
        String negativity = specs[0];
        double lowerBound = Double.parseDouble(specs[1]);
        double upperBound = Double.parseDouble(specs[2]);
        int decPlace = Integer.parseInt(specs[3]);

        // Randomize within bounds
        double randomNumber = (Math.random() * (upperBound - lowerBound)) + lowerBound;

        // Make negative
        if (RandomSpecPanel.ALWAYS.equals(negativity)
                || RandomSpecPanel.SOMETIMES.equals(negativity) && Random.nextBoolean()) {
            randomNumber *= -1;
        }

        BigDecimal randomBigD = new BigDecimal(randomNumber);
        randomBigD = randomBigD.setScale(decPlace, BigDecimal.ROUND_DOWN);

        return randomBigD;

    } catch (NumberFormatException | ArithmeticException e) {
        e.printStackTrace();
        return new BigDecimal((Math.random() * 10) + 1);
    }
}

From source file:com.sciencegadgets.client.algebra.EquationGenerator.java

License:Open Source License

private static void GERERATE_SIDE(EquationNode side, //
        LinkedHashMap<TypeSGET, Integer> expressions, //
        boolean mustBeWholeAnswer, //
        boolean mustBePositives, //
        int minAdd, //
        int minMultiply, //
        int minFraction, //
        int minExp, //
        int maxAdd, //
        int maxMultiply, //
        int maxFraction, //
        int maxExp) {

    HashSet<TypeSGET> toRemove = new HashSet<TypeSGET>();

    for (Entry<TypeSGET, Integer> entry : expressions.entrySet()) {
        if (entry.getValue() == 0) {
            toRemove.add(entry.getKey());
        }/*from w ww .j av a2s  . c  o m*/
    }
    for (TypeSGET type : toRemove) {
        expressions.remove(type);
    }

    while (!expressions.isEmpty()) {
        int index = Random.nextInt(expressions.size());
        TypeSGET[] array = expressions.keySet().toArray(new TypeSGET[expressions.size()]);
        TypeSGET type = array[index];

        switch (type) {
        case Sum:
            int valueAdd = Random.nextInt(maxAdd - minAdd) + minAdd;
            if (!mustBePositives && Random.nextBoolean()) {
                valueAdd *= -1;
            }
            side = ADD_SUB(side, valueAdd, mustBePositives);
            break;
        case Term:
            int valueMultiply = Random.nextInt(maxMultiply - minMultiply) + minMultiply;
            if (!mustBePositives && Random.nextBoolean()) {
                valueMultiply *= -1;
            }
            side = MULTIPLY(side, valueMultiply);
            break;
        case Fraction:
            side = FRACTION(side, mustBeWholeAnswer, maxMultiply, minFraction, maxFraction);
            break;
        case Exponential:
            side = EXP(side, minExp, maxExp);
            break;
        case Trig:
            side = TRIG(side);
            break;
        case Log:
            side = LOG(side);
            break;
        }

        int expressionCount = expressions.get(type) - 1;
        if (expressionCount > 0) {
            expressions.put(type, expressionCount);
        } else {
            expressions.remove(type);
        }
    }
}

From source file:com.sciencegadgets.client.algebra.EquationGenerator.java

License:Open Source License

private static EquationNode FRACTION(EquationNode node, boolean mustBeWholeAnswer, int maxMultiply,
        int minFraction, int maxFraction) {

    int smaller = Random.nextInt(maxMultiply) + 1 + minFraction;
    int bigger = smaller * Random.nextInt(maxFraction) + 2;

    int numeratorValue, denominatorValue;
    if (!mustBeWholeAnswer && Random.nextBoolean()) {
        numeratorValue = smaller;/*from www. j  av a 2  s  .  co  m*/
        denominatorValue = bigger;
    } else {
        numeratorValue = bigger;
        denominatorValue = smaller;
    }

    EquationNode fraction;
    if (TypeSGET.Fraction.equals(node.getType())) {
        fraction = node;
        MULTIPLY(fraction.getChildAt(0), numeratorValue);
        MULTIPLY(fraction.getChildAt(1), denominatorValue);
    } else {
        node = MULTIPLY(node, numeratorValue);
        fraction = node.encase(TypeSGET.Fraction);
        fraction.append(TypeSGET.Number, denominatorValue + "");
    }
    return fraction;
}

From source file:com.sciencegadgets.client.algebra.EquationGenerator.java

License:Open Source License

private static EquationNode ADD_SUB(EquationNode node, int value, boolean mustBePositives) {
    Operator op = !mustBePositives && Random.nextBoolean() ? Operator.MINUS : Operator.PLUS;

    node = node.encase(TypeSGET.Sum);//www .j  a va  2s . c  om
    node.append(TypeSGET.Operation, op.getSign());
    node.append(TypeSGET.Number, value + "");
    return node;
}

From source file:com.thezukunft.wave.connectormock.WaveMock.java

License:Open Source License

public void initRandomParticipants() {

    // init some viewer and add it
    ParticipantMock p = JavaScriptObject.createObject().cast();
    p.setupMock();/*  w ww. j av a2 s. com*/
    p.setDisplayName("Robin the Simple");
    p.setId("1a");
    p.setThumbnailUrl(GWT.getModuleBaseURL() + "robin.jpg");
    participants.push(p);

    // init some host and add it 50% of the time
    ParticipantMock h = JavaScriptObject.createObject().cast();
    h.setupMock();
    h.setDisplayName("Batman the Host");
    h.setId("2b");
    h.setThumbnailUrl(GWT.getModuleBaseURL() + "/batman.jpg");
    participants.push(h);

    viewer = Random.nextBoolean() ? p : h;
    host = Random.nextBoolean() ? h : p;

    eventBus.fireEvent(new ParticipantUpdateEvent(this));
}

From source file:fr.drop.shared.ProjectDatabase.java

License:Apache License

/**
 * Create a new random {@link DropUser}.
 * //from  w  w  w  . j  ava2  s .  c o m
 * @return the new {@link DropUser}.
 */
@SuppressWarnings("deprecation")
private DropUser createContactInfo() {
    DropUser contact = new DropUser(nextValue(categories));
    contact.setDescription(nextValue(LAST_NAMES));
    if (Random.nextBoolean()) {
        // Male.
        contact.setProjectName(nextValue(MALE_FIRST_NAMES));
    } else {
        // Female.
        contact.setProjectName(nextValue(FEMALE_FIRST_NAMES));
    }

    // Create a birthday between 20-80 years ago.
    int year = (new Date()).getYear() - 21 - Random.nextInt(61);
    contact.setBirthday(new Date(year, Random.nextInt(12), 1 + Random.nextInt(31)));

    // Create an address.
    int addrNum = 1 + Random.nextInt(999);
    String addrStreet = nextValue(STREET_NAMES);
    String addrSuffix = nextValue(STREET_SUFFIX);
    contact.setAddress(addrNum + " " + addrStreet + " " + addrSuffix);
    return contact;
}

From source file:fr.drop.shared.UserDatabase.java

License:Apache License

/**
 * Create a new random {@link DropUser}.
 * // www  .  ja  v a 2 s  .  c  om
 * @return the new {@link DropUser}.
 */
@SuppressWarnings("deprecation")
private DropUser createContactInfo() {
    DropUser contact = new DropUser();
    contact.setLastName(nextValue(LAST_NAMES));
    if (Random.nextBoolean()) {
        // Male.
        contact.setFirstName(nextValue(MALE_FIRST_NAMES));
    } else {
        // Female.
        contact.setFirstName(nextValue(FEMALE_FIRST_NAMES));
    }

    // Create a birthday between 20-80 years ago.
    int year = (new Date()).getYear() - 21 - Random.nextInt(61);
    contact.setBirthday(new Date(year, Random.nextInt(12), 1 + Random.nextInt(31)));

    // Create an address.
    int addrNum = 1 + Random.nextInt(999);
    String addrStreet = nextValue(STREET_NAMES);
    String addrSuffix = nextValue(STREET_SUFFIX);
    contact.setAddress(addrNum + " " + addrStreet + " " + addrSuffix);
    return contact;
}