clampScalar( minVal, maxVal ) {

		this.x = clamp( this.x, minVal, maxVal );
		this.y = clamp( this.y, minVal, maxVal );

		return this;

	}
If this vector's x or y values are greater than the max value, they are
replaced by the max value.
If this vector's x or y values are less than the min value, they are
replaced by the min value.

@param {number} minVal - The minimum value the components will be clamped to.
@param {number} maxVal - The maximum value the components will be clamped to.
@return {Vector2} A reference to this vector.