anchor.diff:    /// Divides each component of this [Vec2] by [scale] and returns the result.
     /// This operation does not change this object.
     Vec2 operator /(num scale) => this * (1/scale); // May be faster than x/s, y/s.
  +  
  +  /// Negates this [Vec2] and returns the result.
  +  /// This operation does not change this object.
  +  Vec2 operator -() => new Vec2(-x, -y);
     
     /// Multiplies each componenet of this [Vec2] with the corresponding component of [other] and returns the result.
     /// This operation does not change this object.
  
positive.code:   /// Copies the [x] and [y] from [t] to this [Vec2].
    Vec2 copyFrom(Vec2 t) => setValues(t.x, t.y);
    
    /// Sets the [x] and [y] values to [_x] and [_y].
    Vec2 setValues(double _x, double _y) {
      this.x = _x;
      this.y = _y;
      return this;
    }
    
  
negative.code:   double y;
    
    /// Creates a new [Vec2].
    Vec2(num x, num y) {
      this.x = x.toDouble();
      this.y = y.toDouble();
    }
    
    /// Creates a new [Vec2] pointing to (0;0).
    Vec2.zero() : this(0, 0);
    
    /// Creates a new [Vec2] from the coordinates of [t].
    Vec2.fromVector(Vec2 t) : this(t.x, t.y);
    
    /// Returns a human readable form of this [Vec2].
    toString() => '($x;$y)';
    
    /// Returns a JSON-serialized form of this [Vec2].
    serialize() => '{"x":$x, "y":$y}';
    
    /// Returns a copy of this [Vec2].
  