com.jogamp.opengl.util
Class AnimatorBase

java.lang.Object
  com.jogamp.opengl.util.AnimatorBase

All Implemented Interfaces:

FPSCounter, GLAnimatorControl

Direct Known Subclasses:

Animator, FPSAnimator

public abstract class AnimatorBase
extends Object
implements GLAnimatorControl

Base implementation of GLAnimatorControl

The change synchronization is done via synchronized blocks on the AnimatorBase instance.
Status get / set activity is synced with a RecursiveLock, used as a memory barrier.
This is suitable, since all change requests are allowed to be expensive as they are not expected to be called at every frame.

Nested Class Summary

static interface

AnimatorBase.AnimatorImpl

Field Summary

static int

MODE_EXPECT_AWT_RENDERING_THREAD If present in modeBits field and AWT is available, implementation is aware of the AWT EDT, otherwise not.

Fields inherited from interface javax.media.opengl.FPSCounter

DEFAULT_FRAMES_PER_INTERVAL

Constructor Summary

AnimatorBase()
Creates a new, empty Animator instance while expecting an AWT rendering thread if AWT is available.

Method Summary

void	add(GLAutoDrawable drawable) Adds a drawable to this animator's list of rendering drawables.
Thread	getExclusiveContextThread() Returns the exclusive context thread if isExclusiveContextEnabled() and isStarted(), otherwise null.
long	getFPSStartTime() Returns the time of the first display call in milliseconds after enabling this feature via FPSCounter.setUpdateFPSFrames(int, PrintStream). This value is reset via FPSCounter.resetFPSCounter().
float	getLastFPS()
long	getLastFPSPeriod()
long	getLastFPSUpdateTime() Returns the time of the last update interval in milliseconds, if this feature is enabled via FPSCounter.setUpdateFPSFrames(int, PrintStream). This value is reset via FPSCounter.resetFPSCounter().
int	getModeBits()
Thread	getThread()
float	getTotalFPS()
long	getTotalFPSDuration()
int	getTotalFPSFrames()
int	getUpdateFPSFrames()
boolean	isExclusiveContextEnabled() Returns true, if the exclusive context thread is enabled, otherwise false.
boolean	isStarted() Indicates whether this animator has been started.
void	remove(GLAutoDrawable drawable) Removes a drawable from the animator's list of rendering drawables.
void	resetFPSCounter() Reset all performance counter (startTime, currentTime, frame number)
boolean	setExclusiveContext(boolean enable) Dedicate all GLAutoDrawable's context to this animator thread.
Thread	setExclusiveContext(Thread t) Dedicate all GLAutoDrawable's context to the given exclusive context thread.
void	setIgnoreExceptions(boolean ignoreExceptions) Sets a flag causing this Animator to ignore exceptions produced while redrawing the drawables.
void	setModeBits(boolean enable, int bitValues) Enables or disables the given bitValues in this Animators modeBits.
void	setPrintExceptions(boolean printExceptions) Sets a flag indicating that when exceptions are being ignored by this Animator (see setIgnoreExceptions(boolean)), to print the exceptions' stack traces for diagnostic information.
void	setUpdateFPSFrames(int frames, PrintStream out)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.media.opengl.GLAnimatorControl

isAnimating, isPaused, pause, resume, start, stop

Field Detail

MODE_EXPECT_AWT_RENDERING_THREAD

public static final int MODE_EXPECT_AWT_RENDERING_THREAD

If present in modeBits field and AWT is available, implementation is aware of the AWT EDT, otherwise not.

This is the default.

See Also:

setModeBits(boolean, int), Constant Field Values

Constructor Detail

AnimatorBase

public AnimatorBase()

Creates a new, empty Animator instance while expecting an AWT rendering thread if AWT is available.

See Also:

GLProfile.isAWTAvailable()

Method Detail

setModeBits

public final void setModeBits(boolean enable,
                              int bitValues)
                       throws GLException

Enables or disables the given bitValues in this Animators modeBits.

Parameters:

enable -

bitValues -

Throws:

GLException - if Animator is isStarted() and MODE_EXPECT_AWT_RENDERING_THREAD about to change

See Also:

MODE_EXPECT_AWT_RENDERING_THREAD

getModeBits

public int getModeBits()

add

public final void add(GLAutoDrawable drawable)

Description copied from interface: GLAnimatorControl

Adds a drawable to this animator's list of rendering drawables.

This allows the animator thread to become animating, in case the first drawable is added and the animator is started.

Specified by:

add in interface GLAnimatorControl

Parameters:

drawable - the drawable to be added

remove

public final void remove(GLAutoDrawable drawable)

Description copied from interface: GLAnimatorControl

Removes a drawable from the animator's list of rendering drawables.

This method should get called in case a drawable becomes invalid, and will not be recovered.

This allows the animator thread to become not animating, in case the last drawable has been removed.

Specified by:

remove in interface GLAnimatorControl

Parameters:

drawable - the drawable to be removed

setExclusiveContext

public final Thread setExclusiveContext(Thread t)

Dedicate all GLAutoDrawable's context to the given exclusive context thread.

The given thread will be exclusive to all GLAutoDrawable's context while GLAnimatorControl.isAnimating().

If already started and disabling, method waits until change is propagated to all GLAutoDrawable if not called from the animator thread or exclusive context thread.

Note: Utilizing this feature w/ AWT could lead to an AWT-EDT deadlock, depending on the AWT implementation. Hence it is advised not to use it with native AWT GLAutoDrawable like GLCanvas.

Parameters:

enable -

Returns:

previous value

See Also:

setExclusiveContext(boolean), getExclusiveContextThread(), isExclusiveContextEnabled()

setExclusiveContext

public final boolean setExclusiveContext(boolean enable)

Dedicate all GLAutoDrawable's context to this animator thread.

The given thread will be exclusive to all GLAutoDrawable's context while GLAnimatorControl.isAnimating().

If already started and disabling, method waits until change is propagated to all GLAutoDrawable if not called from the animator thread or exclusive context thread.

Note: Utilizing this feature w/ AWT could lead to an AWT-EDT deadlock, depending on the AWT implementation. Hence it is advised not to use it with native AWT GLAutoDrawable like GLCanvas.

Parameters:

enable -

Returns:

previous value

See Also:

setExclusiveContext(Thread), getExclusiveContextThread(), isExclusiveContextEnabled()

isExclusiveContextEnabled

public final boolean isExclusiveContextEnabled()

Returns true, if the exclusive context thread is enabled, otherwise false.

See Also:

setExclusiveContext(boolean), setExclusiveContext(Thread)

getExclusiveContextThread

public final Thread getExclusiveContextThread()

Returns the exclusive context thread if isExclusiveContextEnabled() and isStarted(), otherwise null.

If exclusive context is enabled via setExclusiveContext(boolean) the animator thread is returned if above conditions are met.

If exclusive context is enabled via setExclusiveContext(Thread) the user passed thread is returned if above conditions are met.

See Also:

setExclusiveContext(boolean), setExclusiveContext(Thread)

getThread

public final Thread getThread()

Specified by:

getThread in interface GLAnimatorControl

Returns:

The animation thread if running, otherwise null.

See Also:

GLAnimatorControl.start(), GLAnimatorControl.stop()

setUpdateFPSFrames

public final void setUpdateFPSFrames(int frames,
                                     PrintStream out)

Specified by:

setUpdateFPSFrames in interface FPSCounter

Parameters:

frames - Update interval in frames.
At every rendered frames interval the currentTime and fps values are updated. If the frames interval is <= 0, no update will be issued, ie the FPSCounter feature is turned off. You may choose FPSCounter.DEFAULT_FRAMES_PER_INTERVAL.

out - optional print stream where the fps values gets printed if not null at every frames interval

resetFPSCounter

public final void resetFPSCounter()

Description copied from interface: FPSCounter

Reset all performance counter (startTime, currentTime, frame number)

Specified by:

resetFPSCounter in interface FPSCounter

getUpdateFPSFrames

public final int getUpdateFPSFrames()

Specified by:

getUpdateFPSFrames in interface FPSCounter

Returns:

update interval in frames

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream)

getFPSStartTime

public final long getFPSStartTime()

Description copied from interface: FPSCounter

Returns the time of the first display call in milliseconds after enabling this feature via FPSCounter.setUpdateFPSFrames(int, PrintStream).
This value is reset via FPSCounter.resetFPSCounter().

Specified by:

getFPSStartTime in interface FPSCounter

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getLastFPSUpdateTime

public final long getLastFPSUpdateTime()

Description copied from interface: FPSCounter

Returns the time of the last update interval in milliseconds, if this feature is enabled via FPSCounter.setUpdateFPSFrames(int, PrintStream).
This value is reset via FPSCounter.resetFPSCounter().

Specified by:

getLastFPSUpdateTime in interface FPSCounter

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getLastFPSPeriod

public final long getLastFPSPeriod()

Specified by:

getLastFPSPeriod in interface FPSCounter

Returns:

Duration of the last update interval in milliseconds.

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getLastFPS

public final float getLastFPS()

Specified by:

getLastFPS in interface FPSCounter

Returns:

Last update interval's frames per seconds, FPSCounter.getUpdateFPSFrames() / FPSCounter.getLastFPSPeriod()

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getTotalFPSFrames

public final int getTotalFPSFrames()

Specified by:

getTotalFPSFrames in interface FPSCounter

Returns:

Number of frame rendered since FPSCounter.getFPSStartTime() up to FPSCounter.getLastFPSUpdateTime()

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getTotalFPSDuration

public final long getTotalFPSDuration()

Specified by:

getTotalFPSDuration in interface FPSCounter

Returns:

Total duration in milliseconds, FPSCounter.getLastFPSUpdateTime() - FPSCounter.getFPSStartTime()

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

getTotalFPS

public final float getTotalFPS()

Specified by:

getTotalFPS in interface FPSCounter

Returns:

Total frames per seconds, FPSCounter.getTotalFPSFrames() / FPSCounter.getTotalFPSDuration()

See Also:

FPSCounter.setUpdateFPSFrames(int, PrintStream), FPSCounter.resetFPSCounter()

setIgnoreExceptions

public final void setIgnoreExceptions(boolean ignoreExceptions)

Sets a flag causing this Animator to ignore exceptions produced while redrawing the drawables. By default this flag is set to false, causing any exception thrown to halt the Animator.

setPrintExceptions

public final void setPrintExceptions(boolean printExceptions)

Sets a flag indicating that when exceptions are being ignored by this Animator (see setIgnoreExceptions(boolean)), to print the exceptions' stack traces for diagnostic information. Defaults to false.

isStarted

public boolean isStarted()

Description copied from interface: GLAnimatorControl

Indicates whether this animator has been started.

Specified by:

isStarted in interface GLAnimatorControl

See Also:

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

toString

public String toString()

Overrides:

toString in class Object