Abstract: This article introduces a computer software, xPlane, which can be used to show the visual 3D morphology of crystals and the Wulff projection. The input for xPlane requires only the crystal parameters, point group and simple forms. The output can be both the text data and the 3D images of given crystal, including the information about crystal orientation, face symbol, Wulff projection an d so on. As a small tool, it will be useful for the simulations and researches of crystal morphology and for teaching in crystallography.

Key words: xPlane, crystal, morphology, software, crystallography

摘要： xPlane是基于VB编写的绘制三维晶体形态及其投影的计算机软件。对软件 的几何原理、算法以及数据的输入和输出进行了简单介绍。在表现晶体的立体形态时，仅要 求输入点群、晶胞参数和单形符号，就可以显示晶体单形和聚形的立体形态及其吴氏网投 影，并可以实时旋转，也支持多种格式的输出。xPlane可作为模拟、分析和研究晶体形态的 辅助工具以及用于晶体学课程的教学演示。

关键词: xPlane, 晶体, 三维形态, 软件, 结晶学