Method normalize

src/engineMath.js:698–702

Returns a new vector in same direction as this one with the length passed in * @param {number} [length] * @return {Vector2}

(length=1)

     * @param {number} [length]
     * @return {Vector2} */
    normalize(length=1)
    {
        const l = this.length();
        return l ? this.scale(length/l) : new Vector2(0, length);
    }

    /** Returns a new vector clamped to length passed in
     * @param {number} [length]