Method angle

src/main/java/field/linalg/Vec2.java:551–555

Return the angle between this vector and the supplied vector. @param v the other vector @return the angle, in radians

(Vec2 v)

     * @return the angle, in radians
     */
    public double angle(Vec2 v) {
        double dot = x * v.x + y * v.y;
        double det = x * v.y - y * v.x;
        return Math.atan2(det, dot);
    }

    /**
     * Return the length of this vector.