com.jogamp.opengl.util

Class Animator

java.lang.Object

com.jogamp.opengl.util.AnimatorBase

com.jogamp.opengl.util.Animator

All Implemented Interfaces:

FPSCounter, GLAnimatorControl

public class Animator
extends AnimatorBase

An Animator can be attached to one or more GLAutoDrawables to drive their display() methods in a loop.

The Animator class creates a background thread in which the calls to display() are performed. After each drawable has been redrawn, a brief pause is performed to avoid swamping the CPU, unless setRunAsFastAsPossible(boolean) has been called.

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

Field Summary

Fields inherited from interface javax.media.opengl.FPSCounter

DEFAULT_FRAMES_PER_INTERVAL

Constructor Summary

Constructors

Constructor and Description
Animator()
Animator(GLAutoDrawable drawable) Creates a new Animator for a particular drawable.
Animator(ThreadGroup tg)
Animator(ThreadGroup tg, GLAutoDrawable drawable) Creates a new Animator for a particular drawable.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isAnimating() Indicates whether this animator is running and animating, the latter is true if it has GLAutoDrawables to render and is not paused.
boolean	isPaused() Indicates whether this animator is running and paused.
boolean	isStarted() Indicates whether this animator is running, ie.
boolean	pause() Pauses this animator.
boolean	resume() Resumes animation if paused.
void	setRunAsFastAsPossible(boolean runFast) Sets a flag in this Animator indicating that it is to run as fast as possible.
boolean	start() Starts this animator, if not running.
boolean	stop() Stops this animator.

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

add, getFPSStartTime, getLastFPS, getLastFPSPeriod, getLastFPSUpdateTime, getThread, getTotalFPS, getTotalFPSDuration, getTotalFPSFrames, getUpdateFPSFrames, remove, resetFPSCounter, setIgnoreExceptions, setPrintExceptions, setUpdateFPSFrames, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Animator

public Animator()

Animator

public Animator(ThreadGroup tg)

Animator

public Animator(GLAutoDrawable drawable)

Creates a new Animator for a particular drawable.

Animator

public Animator(ThreadGroup tg,
        GLAutoDrawable drawable)

Creates a new Animator for a particular drawable.

Method Detail

setRunAsFastAsPossible

public final void setRunAsFastAsPossible(boolean runFast)

Sets a flag in this Animator indicating that it is to run as fast as possible. By default there is a brief pause in the animation loop which prevents the CPU from getting swamped. This method may not have an effect on subclasses.

isStarted

public final boolean isStarted()

Description copied from interface: GLAnimatorControl

Indicates whether this animator is running, ie. has been started and not stopped.

See Also:

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

isAnimating

public final boolean isAnimating()

Description copied from interface: GLAnimatorControl

Indicates whether this animator is running and animating,
the latter is true if it has GLAutoDrawables to render 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 running and paused.

See Also:

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

start

public 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.

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.getThread()

stop

public boolean stop()

Description copied from interface: GLAnimatorControl

Stops 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:

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 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 if not started or already paused, otherwise true

See Also:

GLAnimatorControl.resume(), GLAnimatorControl.isAnimating()

resume

public 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 if not started or not paused, otherwise true

See Also:

GLAnimatorControl.pause(), GLAnimatorControl.isAnimating()