1. A method for optimizing a design using free form deformation, comprising: determining a transformation function for the free form deformation, wherein the transformation function is defined by a spline function that transforms a space in which the design is defined into a space in which a modified design is defined, wherein a parameter of the spline function determines a parameter of the transformation function; and modifying the design using the transformation function for the free form deformation, wherein the free form deformation is used as a representation for evolutionary computation.