Boundary representation is the principal solid modelling method used in modern CAD/CAM systems. There have been a long series of developments on which currently available systems are based, full details of which are only partially known. Ian Stroud’s thorough coverage of these developments puts this technology in perspective and provides the most complete presentation of boundary representation solid modelling yet published. Это и многое другое вы найдете в книге Boundary Representation Modelling Techniques (Ian Anthony Stroud)