void HandleSensorChanged(SensorEvent e)
{
var values = e.Values;
if (values == null || values.Count < 3)
{
return;
}
var x = e.Values[0];
var y = e.Values[1];
var z = e.Values[2];
DateTimeOffset dateTimeOffset;
long timeStamp = e.Timestamp;
if (timeStamp > -62135596800000 && timeStamp < 253402300799999)
{
dateTimeOffset = DateTimeOffset.FromUnixTimeMilliseconds(e.Timestamp);
}
else
{
dateTimeOffset = DateTimeOffset.Now;
}
var rawAcceleration = new Vector3D(x, y, z);
float alpha = 0.8f;
gravityArray[0] = alpha * gravityArray[0] + (1 - alpha) * x;
gravityArray[1] = alpha * gravityArray[1] + (1 - alpha) * y;
gravityArray[2] = alpha * gravityArray[2] + (1 - alpha) * z;
var lx = x - gravityArray[0];
var ly = y - gravityArray[1];
var lz = z - gravityArray[2];
var linearAcceleration = new Vector3D(lx, ly, lz);
var newReading = new AccelerometerReading(dateTimeOffset,
linearAcceleration, null, null, null);
Reading = newReading;
OnReadingChanged(new AccelerometerReadingChangedEventArgs(newReading));
}
public AccelerometerReadingChangedEventArgs(
AccelerometerReading reading)
{
Reading = reading;
}