Method add

src/main/java/field/linalg/Vec2.java:251–256

Add a to b and store the result in dest . @param a the first addend @param b the second addend @param dest will hold the result

(Vec2 a, Vec2 b, Vec2 dest)

     * @param dest will hold the result
     */
    public static Vec2 add(Vec2 a, Vec2 b, Vec2 dest) {
        if (dest == null) dest = new Vec2();
        dest.x = a.x + b.x;
        dest.y = a.y + b.y;
        return dest;
    }

    /**
     * returns x*w+y in dest