Computer aided processing of three-dimensional object and apparatus therefor

A method of generating data for manufacturing a three-dimensional body using a program with computer aided design, comprising:

• generating input data for a computer, said data representing a three-dimensional body model;
• storing said input data in said computer;
• responsive to activation of an input device, generating through said computer program first signals for forming, based on said input data, a plurality of surfaces representing said three-dimensional body model, wherein each surface comprises a contour of a vertical section extending through a central axis of said three-dimensional body model;
• responsive to activation of said input device, generating through said computer program second signals for modifying contours of vertical sections in accordance with said desired three-dimensional body;
• and
• responsive to activation of said input device, generating through said computer program third signals for storing output data which denotes modifications of said contours in response to said second signals, said output data being transmittable from said computer for manufacturing said three-dimensional body.