ABSTRACT
According to the principle of V. Goldschmidt’s gnomonic projection and computer graphics, a new system of computer graphics of crystal shape is presented in the paper. By getting the data from the database of directly inputting information of geometry and topology of crystal shape, the figure can be displayed on the monitor or draw by plotter. The system can draw not only the ideal shape of crystal shape, but also the practical shape of crystal, quasi-crystal. and operate the figure with the geometrical and projective transformation .
