class Vec2f {
    private float x;
    private float y;

    public Vec2f() {
    }

    public Vec2f(Vec2f arg) {
        this(arg.x, arg.y);
    }

    public Vec2f(float x, float y) {
        set(x, y);
    }

    public Vec2f copy() {
        return new Vec2f(this);
    }

    public void set(Vec2f arg) {
        set(arg.x, arg.y);
    }

    public void set(float x, float y) {
        this.x = x;
        this.y = y;
    }

    /**
     * Sets the ith component, 0 &lt;= i &lt; 2
     */
    public void set(int i, float val) {
        switch (i) {
            case 0:
                x = val;
                break;
            case 1:
                y = val;
                break;
            default:
                throw new IndexOutOfBoundsException();
        }
    }

    /**
     * Gets the ith component, 0 &lt;= i &lt; 2
     */
    public float get(int i) {
        switch (i) {
            case 0:
                return x;
            case 1:
                return y;
            default:
                throw new IndexOutOfBoundsException();
        }
    }

    public float x() {
        return x;
    }

    public float y() {
        return y;
    }

    public void setX(float x) {
        this.x = x;
    }

    public void setY(float y) {
        this.y = y;
    }

    public float dot(Vec2f arg) {
        return x * arg.x + y * arg.y;
    }

    public float length() {
        return (float) Math.sqrt(lengthSquared());
    }

    public float lengthSquared() {
        return this.dot(this);
    }

    public void normalize() {
        float len = length();
        if (len == 0.0f) {
            return;
        }
        scale(1.0f / len);
    }

    /**
     * Returns this * val; creates new vector
     */
    public Vec2f times(float val) {
        Vec2f tmp = new Vec2f(this);
        tmp.scale(val);
        return tmp;
    }

    /**
     * this = this * val
     */
    public void scale(float val) {
        x *= val;
        y *= val;
    }

    /**
     * Returns this + arg; creates new vector
     */
    public Vec2f plus(Vec2f arg) {
        Vec2f tmp = new Vec2f();
        tmp.add(this, arg);
        return tmp;
    }

    /**
     * this = this + b
     */
    public void add(Vec2f b) {
        add(this, b);
    }

    /**
     * this = a + b
     */
    public void add(Vec2f a, Vec2f b) {
        x = a.x + b.x;
        y = a.y + b.y;
    }

    /**
     * Returns this + s * arg; creates new vector
     */
    public Vec2f addScaled(float s, Vec2f arg) {<FILL_FUNCTION_BODY>}

    /**
     * this = a + s * b
     */
    public void addScaled(Vec2f a, float s, Vec2f b) {
        x = a.x + s * b.x;
        y = a.y + s * b.y;
    }

    /**
     * Returns this - arg; creates new vector
     */
    public Vec2f minus(Vec2f arg) {
        Vec2f tmp = new Vec2f();
        tmp.sub(this, arg);
        return tmp;
    }

    /**
     * this = this - b
     */
    public void sub(Vec2f b) {
        sub(this, b);
    }

    /**
     * this = a - b
     */
    public void sub(Vec2f a, Vec2f b) {
        x = a.x - b.x;
        y = a.y - b.y;
    }

    public Vecf toVecf() {
        Vecf out = new Vecf(2);
        for (int i = 0; i < 2; i++) {
            out.set(i, get(i));
        }
        return out;
    }

    @Override
    public String toString() {
        return "(" + x + ", " + y + ")";
    }
}

        Vec2f tmp = new Vec2f();
        tmp.addScaled(this, s, arg);
        return tmp;
    
<no_super_class>