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Sourcecode: libjgoodies-animation-java version File versions  Download package

AnimationFunction.java

/*
 * Copyright (c) 2001-2006 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
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 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

package com.jgoodies.animation;

/**
 * This interface describes time-based animation functions by 
 * their duration and a mapping from time to animation effects.<p>
 * 
 * For each time in the animation's valid time interval,
 * the <code>#valueAt</code> method returns a value that will be used
 * to apply an animation effect.
 *
 * @author  Karsten Lentzsch
 * @version $Revision: 1.1 $
 * 
 * @see AnimationFunctions
 * @see AbstractAnimationFunction
 */
00047 public interface AnimationFunction {

    /**
     * Returns the length of this function's valid time interval.
     * 
     * @return the length of this function's valid time interval
     */
    long duration();
    

    /**
     * Returns the animation effect for a given time in the valid time interval.
     * 
     * @param time   the time used to determine the animation effect
     * @return the animation effect at the given time
     */
    Object valueAt(long time);

}

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