Version: 2017.4
public float magneticHeading ;

説明

磁北極に基づく度単位の進行方向 (読み取り専用)

The value in this property is always measured relative to the top of the screen in its current orientation. The heading of magnetic north is not exactly the same as true geographical north - to get the exact heading, use the trueHeading property.

    function Update () {
        // Orient an object to point to magnetic north.
        transform.rotation = Quaternion.Euler(0, -Input.compass.magneticHeading, 0);
    }