/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
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 */

package demos.util;

/** Interface abstracting concept of time from applications. */

public interface Time {
  /** Updates this Time object. Call update() each frame before
      calling the accessor routines. */
  public void  update();
  /** Time in seconds since beginning of application. */
  public double time();
  /** Time in seconds since last update. */
  public double deltaT();
}
