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Classes and resources for developing Alchemist UIs

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/*
 * Copyright (C) 2010-2022, Danilo Pianini and contributors
 * listed, for each module, in the respective subproject's build.gradle.kts file.
 *
 * This file is part of Alchemist, and is distributed under the terms of the
 * GNU General Public License, with a linking exception,
 * as described in the file LICENSE in the Alchemist distribution's top directory.
 */
package it.unibo.alchemist.boundary.ui.impl;

import it.unibo.alchemist.boundary.ui.api.PointerSpeed;

import java.awt.Point;

/**
 * Implementation for {@link PointerSpeed} interface.
 * 
 */
public final class PointerSpeedImpl implements PointerSpeed {
    private Point oldPosition = new Point();
    private Point position = new Point();

    @Override
    public Point getCurrentPosition() {
        return (Point) position.clone();
    }

    @Override
    public Point getOldPosition() {
        return (Point) oldPosition.clone();
    }

    @Override
    public Point getVariation() {
        return new Point(
                (int) (position.getX() - oldPosition.getX()),
                (int) (position.getY() - oldPosition.getY()));
    }

    @Override
    public void setCurrentPosition(final Point point) {
        oldPosition = position;
        position = (Point) point.clone();
    }

}