org.graphstream.ui.view.util

Class FpsCounter

java.lang.Object

org.graphstream.ui.view.util.FpsCounter

public class FpsCounter
extends java.lang.Object

A simple counter that allows to count the number of frames per second.

Author:

Antoine Dutot

Constructor Summary

Constructors

Constructor and Description
FpsCounter()

Method Summary

Modifier and Type	Method and Description
void	beginFrame() Start a frame measure.
void	endFrame() End a frame measure.
double	getAverageFramesPerSecond() The average frame-per-second measure.
double	getAverageFrameTimeInSeconds() The average frame time.
int	getAverageMeasureCount() The number of frames times used to compute the average frame-per-second and frame time.
double	getFramesPerSecond() The number of frames per second according to the last measured frame (instantaneous measure).
double	getLastFrameTimeInSeconds() The duration in seconds of the last measured frame.
void	resetAverages()

Methods inherited from class java.lang.Object

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

Constructor Detail

FpsCounter

public FpsCounter()

Method Detail

getFramesPerSecond

public double getFramesPerSecond()

The number of frames per second according to the last measured frame (instantaneous measure).

Returns:

The estimated frame-per-second measure of the last frame.

getLastFrameTimeInSeconds

public double getLastFrameTimeInSeconds()

The duration in seconds of the last measured frame.

Returns:

The last frame time in seconds.

getAverageMeasureCount

public int getAverageMeasureCount()

The number of frames times used to compute the average frame-per-second and frame time. This number augments with the measures until a maximum, where it is reset to 0.

Returns:

The number of frames measure.

getAverageFramesPerSecond

public double getAverageFramesPerSecond()

The average frame-per-second measure.

Returns:

The average number of frames per second.

See Also:

getAverageMeasureCount()

getAverageFrameTimeInSeconds

public double getAverageFrameTimeInSeconds()

The average frame time.

Returns:

The time used by a frame in average.

resetAverages

public void resetAverages()

beginFrame

public void beginFrame()

Start a frame measure.

endFrame

public void endFrame()

End a frame measure.