Degrees.java

 /*
  * Paste into Android project 
  */

 /**
  * Input -> y and z GForce (raw accelerometer data / 9.81)
  * Output -> Degrees of rotation around x axis
  */
    public double beta(double y, double z){
        if(z >= 0){
            if (y >= 0){
                return y * 90.0;
            } else {
                return 360 + y * 90.0;
            }
        } else {
            return 180 - y * 90;
        }

    }


    /**
     * Input -> x and y GForce (raw accelerometer data / 9.81)
     * Output -> Degrees of rotation around z axis
     */
    public double alpha(double x, double y){
        return beta(x, y);
    }


    /**
     * Input -> x and z GForce (raw accelerometer data / 9.81)
     * Output -> Degrees of rotation around y axis
     */
    public double gamma(double x, double z){
        return beta(z, x);
    }