UWP development direction sensor and UWP development direction Sensor

UWP development direction sensor and UWP development direction Sensor

In UWP development, we can use three methods in the following directions: four elements in OrientationSensor, HeadingMagneticNorth of Compass, and SimpleOrientationSensor.

SimpleOrientationSensor is used in simple cases. It can only read six directions: 0, 90, 180,270, FaceUP, and FaceDown.

　　　　　　  var simpleOrien = SimpleOrientationSensor.GetDefault().GetCurrentOrientation();            switch (simpleOrien)            {                case SimpleOrientation.Facedown:                    // To do ...                    break;                case SimpleOrientation.Faceup:                    // To do ...                    break;                case SimpleOrientation.NotRotated:                    // To do ...                    break;                case SimpleOrientation.Rotated180DegreesCounterclockwise:                    // To do ...                    break;                case SimpleOrientation.Rotated270DegreesCounterclockwise:                    // To do ...                    break;                case SimpleOrientation.Rotated90DegreesCounterclockwise:                    // To do ...                    break;            }

Compass:

　　　　　　  var compass = Compass.GetDefault().GetCurrentReading();            var angle= compass.HeadingMagneticNorth;

It is easy to use, but it seems that you are moving in the direction, that is, if you do not move, the reading is meaningless.

Direction sensor:

　　　　　　  var _sensor = OrientationSensor.GetDefault();            var quaternion = _sensor.GetCurrentReading().Quaternion;            var heading = 180 * Math.Atan2(2 * (quaternion.W * quaternion.Z + quaternion.X * quaternion.Y), 1 - 2 * (quaternion.Y * quaternion.Y + quaternion.Z * quaternion.Z)) / Math.PI;

This may be a little troublesome, because it involves the four-dimensional element. For information about the four-dimensional element, google or flip the book.