3D DESIGN SURFACE MODEL FOR THE ROADS IN AIRPORT CAD SYSTEM

In this paper the 3D model for the roads in airport CAD system with Coons surface model is mainly discussed. Compared with traditional strip and grid model, the expression is more normal and can accurately describe the design surface and the Construction Ground base. The basic calculation method and OOP method used to realise the class hierarchy structure were also introduced and applied in roads in airport CAD system.