TestbedControllerJavaFX.java

/*******************************************************************************
 * Copyright (c) 2013, Daniel Murphy All rights reserved.
 * 
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 * provided that the following conditions are met: * Redistributions of source code must retain the
 * above copyright notice, this list of conditions and the following disclaimer. * 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.
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package org.jbox2d.testbed.framework.javafx;

import org.jbox2d.testbed.framework.AbstractTestbedController;
import org.jbox2d.testbed.framework.TestbedErrorHandler;
import org.jbox2d.testbed.framework.TestbedModel;

import javafx.animation.AnimationTimer;

/**
 * This class contains most control logic for the testbed and the update loop. It also watches the
 * model to switch tests and populates the model with some loop statistics.
 * 
 * @author Daniel Murphy
 */
public class TestbedControllerJavaFX extends AbstractTestbedController {

  public TestbedControllerJavaFX(TestbedModel argModel, UpdateBehavior behavior,
      MouseBehavior mouseBehavior, TestbedErrorHandler errorHandler) {
    super(argModel, behavior, mouseBehavior, errorHandler);
  }

  private AnimationTimer animator = new AnimationTimer() {
    long last = -1;

    @Override
    public void handle(long now) {
      if (last >= 0) {
        long dt = (now - last) / 1000000; // convert til millis
        sleepTime -= dt;
        if (sleepTime < 0) {
          stepAndRender();
        }
      }
      last = now;
    }
  };

  @Override
  public void startAnimator() {
    animator.start();
  }

  @Override
  public void stopAnimator() {
    animator.stop();
  }
}