public void OnSensorChanged(SensorEvent e)
{
if (e.Sensor == accelerometer && !lastAccelerometerSet)
{
CopyValues(e.Values, lastAccelerometer);
lastAccelerometerSet = true;
}
else if (e.Sensor == magnetometer && !lastMagnetometerSet)
{
CopyValues(e.Values, lastMagnetometer);
lastMagnetometerSet = true;
}
if (lastAccelerometerSet && lastMagnetometerSet)
{
SensorManager.GetRotationMatrix(r, null, lastAccelerometer, lastMagnetometer);
SensorManager.GetOrientation(r, orientation);
var azimuthInRadians = orientation[0];
var azimuthInDegress = (Java.Lang.Math.ToDegrees(azimuthInRadians) + 360.0) % 360.0;
var data = new CompassData(azimuthInDegress);
if (useSyncContext)
{
Platform.BeginInvokeOnMainThread(() => handler?.Invoke(data));
}
else
{
handler?.Invoke(data);
}
lastMagnetometerSet = false;
lastAccelerometerSet = false;
}
}
public void OnSensorChanged(SensorEvent e)
{
if (e.Sensor == accelerometer && !lastAccelerometerSet)
{
CopyValues(e.Values, lastAccelerometer);
lastAccelerometerSet = true;
}
else if (e.Sensor == magnetometer && !lastMagnetometerSet)
{
CopyValues(e.Values, lastMagnetometer);
lastMagnetometerSet = true;
}
if (lastAccelerometerSet && lastMagnetometerSet)
{
SensorManager.GetRotationMatrix(r, null, lastAccelerometer, lastMagnetometer);
SensorManager.GetOrientation(r, orientation);
var azimuthInRadians = orientation[0];
var azimuthInDegress = (Java.Lang.Math.ToDegrees(azimuthInRadians) + 360.0) % 360.0;
var data = new CompassData(azimuthInDegress);
Compass.OnChanged(data);
lastMagnetometerSet = false;
lastAccelerometerSet = false;
}
}
internal static void PlatformStart(SensorSpeed sensorSpeed, Action <CompassData> handler)
{
var compass = DefaultCompass;
var useSyncContext = false;
var interval = NormalInterval;
switch (sensorSpeed)
{
case SensorSpeed.Fastest:
interval = FastestInterval;
break;
case SensorSpeed.Game:
interval = GameInterval;
break;
default:
useSyncContext = true;
break;
}
compass.ReportInterval = compass.MinimumReportInterval >= interval ? interval : compass.MinimumReportInterval;
MonitorCTS.Token.Register(CancelledToken);
void CancelledToken()
{
Platform.BeginInvokeOnMainThread(() =>
{
compass.ReadingChanged -= CompassReportedInterval;
DisposeToken();
});
}
compass.ReadingChanged += CompassReportedInterval;
void CompassReportedInterval(object sender, CompassReadingChangedEventArgs e)
{
var data = new CompassData(e.Reading.HeadingMagneticNorth);
if (useSyncContext)
{
Platform.BeginInvokeOnMainThread(() => handler?.Invoke(data));
}
else
{
handler?.Invoke(data);
}
}
}
internal CompassChangedEventArgs(CompassData reading) => Reading = reading;
internal static void OnChanged(CompassData reading) => OnChanged(new CompassChangedEventArgs(reading));
internal static void PlatformStart(SensorSpeed sensorSpeed, Action <CompassData> handler)
{
var useSyncContext = false;
var locationManager = new CLLocationManager();
switch (sensorSpeed)
{
case SensorSpeed.Fastest:
locationManager.HeadingFilter = FastestFilter;
locationManager.DesiredAccuracy = CLLocation.AccurracyBestForNavigation;
break;
case SensorSpeed.Game:
locationManager.HeadingFilter = GameFilter;
locationManager.DesiredAccuracy = CLLocation.AccurracyBestForNavigation;
break;
case SensorSpeed.Normal:
locationManager.HeadingFilter = NormalFilter;
locationManager.DesiredAccuracy = CLLocation.AccuracyBest;
useSyncContext = true;
break;
case SensorSpeed.Ui:
locationManager.HeadingFilter = UiFilter;
locationManager.DesiredAccuracy = CLLocation.AccuracyBest;
useSyncContext = true;
break;
}
MonitorCTS.Token.Register(CancelledToken, useSyncContext);
locationManager.UpdatedHeading += LocationManagerUpdatedHeading;
locationManager.StartUpdatingHeading();
void CancelledToken()
{
if (locationManager != null)
{
locationManager.UpdatedHeading -= LocationManagerUpdatedHeading;
locationManager.StopUpdatingHeading();
locationManager.Dispose();
locationManager = null;
}
DisposeToken();
}
void LocationManagerUpdatedHeading(object sender, CLHeadingUpdatedEventArgs e)
{
var data = new CompassData(e.NewHeading.MagneticHeading);
if (useSyncContext)
{
Platform.BeginInvokeOnMainThread(() => handler?.Invoke(data));
}
else
{
handler?.Invoke(data);
}
}
}
static void CompassReportedInterval(object sender, CompassReadingChangedEventArgs e)
{
var data = new CompassData(e.Reading.HeadingMagneticNorth);
OnChanged(data);
}
static void LocationManagerUpdatedHeading(object sender, CLHeadingUpdatedEventArgs e)
{
var data = new CompassData(e.NewHeading.MagneticHeading);
OnChanged(data);
}
