Package com.aerisweather.aeris.maps

Class TrueNorthListener

java.lang.Object

com.aerisweather.aeris.maps.TrueNorthListener

All Implemented Interfaces:

android.hardware.SensorEventListener

Direct Known Subclasses:

BearingCompassListener

public class TrueNorthListener
extends Object

Compass listener for determining the direction to true north.

Field Summary

Fields

Modifier and Type	Field	Description
protected Compass	compass
protected android.content.Context	context
protected int	currentAccuracy
protected long	lastUpdate
protected float[]	matrixI
protected float[]	matrixR
protected float[]	matrixValues
protected double	oldAzimuth
protected boolean	performSmoothing
protected double	SmoothFactorCompass
protected double	SmoothThresholdCompass
protected static int	TIMING_RESTRICTION
protected float[]	valuesAccelerometer
protected float[]	valuesMagneticField

Constructor Summary

Constructors

Constructor	Description
TrueNorthListener(Compass compass, android.content.Context context)

Method Summary

Modifier and Type	Method	Description
protected double	calcAzimuth(android.location.Location myLocation)	Calculate the Azimuth.
void	onAccuracyChanged(android.hardware.Sensor sensor, int arg1)
void	onSensorChanged(android.hardware.SensorEvent event)
protected double	smoothCompassReading(double azimuth, double oldAzimuth)	Handle smoothing of the compass angle to lower jitter

Methods inherited from class java.lang.Object

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

Field Detail

TIMING_RESTRICTION

protected static final int TIMING_RESTRICTION

See Also:

Constant Field Values

compass

protected final Compass compass

valuesAccelerometer

protected float[] valuesAccelerometer

valuesMagneticField

protected float[] valuesMagneticField

matrixR

protected final float[] matrixR

matrixI

protected final float[] matrixI

matrixValues

protected final float[] matrixValues

lastUpdate

protected long lastUpdate

currentAccuracy

protected int currentAccuracy

context

protected final android.content.Context context

performSmoothing

protected final boolean performSmoothing

See Also:

Constant Field Values

SmoothFactorCompass

protected final double SmoothFactorCompass

See Also:

Constant Field Values

SmoothThresholdCompass

protected final double SmoothThresholdCompass

See Also:

Constant Field Values

oldAzimuth

protected double oldAzimuth

Constructor Detail

TrueNorthListener

public TrueNorthListener(Compass compass,
                         android.content.Context context)

Method Detail

calcAzimuth

protected double calcAzimuth(android.location.Location myLocation)

Calculate the Azimuth.

Parameters:

myLocation - Location object

Returns:

double

onAccuracyChanged

public void onAccuracyChanged(android.hardware.Sensor sensor,
                              int arg1)

Specified by:

onAccuracyChanged in interface android.hardware.SensorEventListener

onSensorChanged

public void onSensorChanged(android.hardware.SensorEvent event)

Specified by:

onSensorChanged in interface android.hardware.SensorEventListener

smoothCompassReading

protected double smoothCompassReading(double azimuth,
                                      double oldAzimuth)

Handle smoothing of the compass angle to lower jitter

Parameters:

azimuth - new compass bearing

oldAzimuth - previous compass bearing

Returns:

double