Package com.jogamp.opengl.util

Class FPSAnimator

java.lang.Object

com.jogamp.opengl.util.AnimatorBase

com.jogamp.opengl.util.FPSAnimator

All Implemented Interfaces:

FPSCounter, GLAnimatorControl

public class FPSAnimator
extends AnimatorBase

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.

The Animator execution thread does not run as a daemon thread, so it is able to keep an application from terminating.
Call stop() to terminate the animation and it's execution thread.

Nested Class Summary

Nested classes/interfaces inherited from class com.jogamp.opengl.util.AnimatorBase

AnimatorBase.AnimatorImpl, AnimatorBase.UncaughtAnimatorException

Nested classes/interfaces inherited from interface com.jogamp.opengl.GLAnimatorControl

GLAnimatorControl.UncaughtExceptionHandler

Field Summary

Fields inherited from class com.jogamp.opengl.util.AnimatorBase

MODE_EXPECT_AWT_RENDERING_THREAD

Fields inherited from interface com.jogamp.opengl.FPSCounter

DEFAULT_FRAMES_PER_INTERVAL

Constructor Summary

Constructors

Constructor	Description
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.
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.

Method Summary

Modifier and Type	Method	Description
int	getFPS()
boolean	isAnimating()	Indicates whether this animator is started and is not paused.
boolean	isPaused()	Indicates whether this animator is started and either manually paused or paused automatically due to no added GLAutoDrawables.
boolean	pause()	Pauses this animator.
boolean	resume()	Resumes animation if paused.
void	setFPS(int fps)
boolean	start()	Starts this animator, if not running.
boolean	stop()	Stops this FPSAnimator.

Methods inherited from class com.jogamp.opengl.util.AnimatorBase

add, getExclusiveContextThread, getFPSStartTime, getLastFPS, getLastFPSPeriod, getLastFPSUpdateTime, getModeBits, getThread, getTotalFPS, getTotalFPSDuration, getTotalFPSFrames, getUncaughtExceptionHandler, getUpdateFPSFrames, isExclusiveContextEnabled, isStarted, remove, resetFPSCounter, setExclusiveContext, setExclusiveContext, setIgnoreExceptions, setModeBits, setPrintExceptions, setUncaughtExceptionHandler, setUpdateFPSFrames, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, 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

setFPS

public final void setFPS(int fps)
                  throws GLException

Parameters:

fps -

Throws:

GLException - if the animator has already been started

getFPS

public final int getFPS()

isAnimating

public final boolean isAnimating()

Description copied from interface: GLAnimatorControl

Indicates whether this animator is started and is not paused.

See Also:

GLAnimatorControl.start(), GLAnimatorControl.stop(), GLAnimatorControl.pause(), GLAnimatorControl.resume()

isPaused

public final boolean isPaused()

Description copied from interface: GLAnimatorControl

Indicates whether this animator is started and either manually paused or paused automatically due to no added GLAutoDrawables.

See Also:

GLAnimatorControl.start(), GLAnimatorControl.stop(), GLAnimatorControl.pause(), GLAnimatorControl.resume()

start

public final boolean start()

Description copied from interface: GLAnimatorControl

Starts this animator, if not running.

In most situations this method blocks until completion, except when called from the animation thread itself or in some cases from an implementation-internal thread like the AWT event queue thread.

Note that an animator w/o added drawables will be paused automatically.

If started, all counters (time, frames, ..) are reset to zero.

Returns:

true is started due to this call, otherwise false, ie started already or unable to start.

See Also:

GLAnimatorControl.stop(), GLAnimatorControl.isAnimating(), GLAnimatorControl.isPaused(), GLAnimatorControl.getThread()

stop

public final boolean 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.

Returns:

true is stopped due to this call, otherwise false, ie not started or unable to stop.

See Also:

GLAnimatorControl.start(), GLAnimatorControl.isAnimating(), GLAnimatorControl.getThread()

pause

public final boolean pause()

Description copied from interface: GLAnimatorControl

Pauses this animator.

In most situations this method blocks until completion, except when called from the animation thread itself or in some cases from an implementation-internal thread like the AWT event queue thread.

Returns:

false if not started, already paused or failed to pause, otherwise true

See Also:

GLAnimatorControl.resume(), GLAnimatorControl.isAnimating()

resume

public final boolean resume()

Description copied from interface: GLAnimatorControl

Resumes animation if paused.

In most situations this method blocks until completion, except when called from the animation thread itself or in some cases from an implementation-internal thread like the AWT event queue thread.

If resumed, all counters (time, frames, ..) are reset to zero.

Returns:

false if not started, not paused or unable to resume, otherwise true

See Also:

GLAnimatorControl.pause(), GLAnimatorControl.isAnimating()