Research on City Programming CAD System (CPCAD)
Wang Yanliang Wang Yanmin Huang Ming Zhang Qing (①Harbin Institute of Engineering , Harbin , 150001 ; ②Heilongjiang Institute of City Programming , Harbin)
City general programming is one of the important basic works in city construction and transformation. Computer aided programming is the trend of current programming technical development. The paper is focused the discussion on the problems of background map digitization, dialog box, polygon topology etc. .