com.threerings.media.timer

Class CalibratingTimer

java.lang.Object

com.threerings.media.timer.CalibratingTimer

All Implemented Interfaces:

MediaTimer

Direct Known Subclasses:

NanoTimer, PerfTimer

public abstract class CalibratingTimer
extends Object
implements MediaTimer

Calibrates timing values from a subclass' implementation of current against those returned by System.currentTimeMillis. If the subclass timer is moving 1.25 times faster or .75 times slower than currentTimeMillis, hold it to the values from currentTimeMillis.

Constructor Summary

Constructors

Constructor and Description
CalibratingTimer()

Method Summary

Modifier and Type	Method and Description
void	clearMaxDriftRatio() Clears out our remembered max drift.
abstract long	current() Return the current value for this timer.
long	getElapsedMicros() Returns the number of microseconds that have elapsed since the timer was created or last MediaTimer.reset().
long	getElapsedMillis() Returns the number of milliseconds that have elapsed since the timer was created or last MediaTimer.reset().
float	getMaxDriftRatio() Returns the greatest drift ratio we've had to compensate for.
void	reset() Resets the timer's monotonically increasing value.

Methods inherited from class java.lang.Object

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

Constructor Detail

CalibratingTimer

public CalibratingTimer()

Method Detail

getElapsedMicros

public long getElapsedMicros()

Description copied from interface: MediaTimer

Returns the number of microseconds that have elapsed since the timer was created or last MediaTimer.reset(). Note: the accuracy of this method is highly dependent on the timer implementation used.

Specified by:

getElapsedMicros in interface MediaTimer

getElapsedMillis

public long getElapsedMillis()

Description copied from interface: MediaTimer

Returns the number of milliseconds that have elapsed since the timer was created or last MediaTimer.reset(). Note: the accuracy of this method is highly dependent on the timer implementation used.

Specified by:

getElapsedMillis in interface MediaTimer

reset

public void reset()

Description copied from interface: MediaTimer

Resets the timer's monotonically increasing value.

Specified by:

reset in interface MediaTimer

current

public abstract long current()

Return the current value for this timer.

getMaxDriftRatio

public float getMaxDriftRatio()

Returns the greatest drift ratio we've had to compensate for.

clearMaxDriftRatio

public void clearMaxDriftRatio()

Clears out our remembered max drift.