Animator.java :  » Science » jung-2-2_0_1 » edu » uci » ics » jung » visualization » util » Java Open Source

/*
 * Copyright (c) 2005, the JUNG Project and the Regents of the University of
 * California All rights reserved.
 *
 * This software is open-source under the BSD license; see either "license.txt"
 * or http://jung.sourceforge.net/license.txt for a description.
 *
 * 
 */
package edu.uci.ics.jung.visualization.util;

import edu.uci.ics.jung.algorithms.util.IterativeContext;

/**
 * 
 * 
 * @author Tom Nelson - tomnelson@dev.java.net
 *
 */
public class Animator implements Runnable {
  
  protected IterativeContext process;
  protected boolean stop;
  protected Thread thread;
  
  /**
   * how long the relaxer thread pauses between iteration loops.
   */
  protected long sleepTime = 10L;

  
  public Animator(IterativeContext process) {
    this(process, 10L);
  }

  public Animator(IterativeContext process, long sleepTime) {
    this.process = process;
    this.sleepTime = sleepTime;
  }

  /**
   * @return the relaxerThreadSleepTime
   */
  public long getSleepTime() {
    return sleepTime;
  }

  /**
   * @param relaxerThreadSleepTime the relaxerThreadSleepTime to set
   */
  public void setSleepTime(long sleepTime) {
    this.sleepTime = sleepTime;
  }
  
  public void start() {
    // in case its running
    stop();
    stop = false;
    thread = new Thread(this);
    thread.setPriority(Thread.MIN_PRIORITY);
    thread.start();
  }
  
  public synchronized void stop() {
    stop = true;
  }

  public void run() {
    while (!process.done() && !stop) {

      process.step();

      if (stop)
        return;

      try {
        Thread.sleep(sleepTime);
      } catch (InterruptedException ie) {
      }
    }
  }
}