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## com.sun.opengl.util
Class FPSAnimator

    java.lang.Object
      com.sun.opengl.util.Animator
          com.sun.opengl.util.FPSAnimator

    public class FPSAnimator

extends Animator

An Animator subclass which attempts to achieve a target frames-per-second rate to avoid using all CPU time. The target FPS is only an estimate and is not guaranteed.

Field Summary

Fields inherited from class com.sun.opengl.util.Animator
`ignoreExceptions, printExceptions`

Constructor Summary
`FPSAnimator(GLAutoDrawable drawable, int fps)` Creates an FPSAnimator with a given target frames-per-second value and an initial drawable to animate.
`FPSAnimator(GLAutoDrawable drawable, int fps, boolean scheduleAtFixedRate)` Creates an FPSAnimator with a given target frames-per-second value, an initial drawable to animate, and a flag indicating whether to use fixed-rate scheduling.
`FPSAnimator(int fps)` Creates an FPSAnimator with a given target frames-per-second value.
`FPSAnimator(int fps, boolean scheduleAtFixedRate)` Creates an FPSAnimator with a given target frames-per-second value and a flag indicating whether to use fixed-rate scheduling.

Method Summary
`boolean` | `isAnimating()` Indicates whether this FPSAnimator is currently running.
`void` | `start()` Starts this FPSAnimator.
`void` | `stop()` Stops this FPSAnimator.

Methods inherited from class com.sun.opengl.util.Animator
`add, display, drawableIterator, remove, setIgnoreExceptions, setPrintExceptions, setRunAsFastAsPossible`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### FPSAnimator

    public FPSAnimator(int fps)

  Creates an FPSAnimator with a given target frames-per-second value. Equivalent to `FPSAnimator(null, fps)`.

### FPSAnimator

    public FPSAnimator(int fps,
                       boolean scheduleAtFixedRate)

  Creates an FPSAnimator with a given target frames-per-second value and a flag indicating whether to use fixed-rate scheduling. Equivalent to `FPSAnimator(null, fps, scheduleAtFixedRate)`.

### FPSAnimator

    public FPSAnimator(GLAutoDrawable drawable,
                       int fps)

  Creates an FPSAnimator with a given target frames-per-second value and an initial drawable to animate. Equivalent to `FPSAnimator(null, fps, false)`.

### FPSAnimator

    public FPSAnimator(GLAutoDrawable drawable,
                       int fps,
                       boolean scheduleAtFixedRate)

  Creates an FPSAnimator with a given target frames-per-second value, an initial drawable to animate, and a flag indicating whether to use fixed-rate scheduling.

Method Detail

### start

    public void start()

  Starts this FPSAnimator.

  Overrides:
    `start` in class `Animator`

### isAnimating

    public boolean isAnimating()

  Indicates whether this FPSAnimator is currently running. This should only be used as a heuristic to applications because in some circumstances the FPSAnimator may be in the process of shutting down and this method will still return true.

  Overrides:
    `isAnimating` in class `Animator`

### stop

    public void stop()

  Stops this FPSAnimator. Due to the implementation of the FPSAnimator it is not guaranteed that the FPSAnimator will be completely stopped by the time this method returns.

  Overrides:
    `stop` in class `Animator`

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Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.