实际晶体形态计算机绘图

COMPUTER GRAPHICS OF CRYSTAL SHAPE

根据极平投影作晶体图和计算机绘图原理,本文建立了一种新的晶体形态计算机绘图系统。通过对晶体形态数据库的调用,或直接输入晶体形态测量的几何、拓扑信息,计算机就可在显示器上或绘图仪上输出图形。该系统不仅可绘制晶体理想形态,也可绘出实际形态、准晶态,并对绘出的晶体图进行几何变换和投影变换。

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