The Synthesis of Solids Bounded by Many Faces A technique is presented which allows a class of solid objects to be synthesized and stored using a computer. Synthesis begins with primitive solids like a cube, wedge, or cylinder. Any solid can be moved, scaled, or rotated. Solids may also be added together or subtracted. Two algorithms to perform addition are described. For practical designers, the technique has the advantage that operations are concise, readily composed, and are given in terms of easily imagined solidsuite short sequences of operations suffice to build up complex solids bounded by many faces. CACM April, 1975 Braid, I. C. computational geometry, computer-aided design, graphics, machined components, polyhedra, shape synthesis, three-dimensional modeling 3.2 8.2 CA750406 JB January 9, 1978 3:59 PM 2771 5 2771 2771 5 2771 2771 5 2771 2827 5 2771 3116 5 2771 2751 6 2771 2771 6 2771 2771 6 2771