METHOD AND APPARATUS FOR APPLYING A ROTATIONAL TRANSFORM TO A PORTION OF A THREE-DIMENSIONAL REPRESENTATION OF AN APPLIANCE FOR A LIVING BODY

摘要

A method and apparatus for applying a rotational transform to a portion of a three-dimensional representation of an appliance for a liv-ing body is disclosed. The representation is defined by an input plurality of coordinates stored in a processor circuit memory, the input plurality of co-ordinates representing a general shape of the appliance. The method in-volves receiving operator input identifying a coordinate location of a rota-tional axis about which the rotational transform is to be applied, receiving operator input of at least one constraint defining an extent of a transform volume within which the rotational transform is to be applied to the repre-sentation of the appliance, and receiving operator input of a rotational transform magnitude. The method also involves applying the rotational transform to the portion of the representation of the appliance within the transform volume to produce an output plurality of coordinates represent-ing a modified shape of the appliance such that the general shape of por-tions of the appliance outside the transform volume remain un-modified by the rotational transform, and storing the output plurality of coordinates in the processor circuit memory.