文章介绍了基于点绘制技术的原理和比较有代表性的点绘制方法，探讨了外形非常复杂的不规则几何体在计算机图形绘制中生成的物体表面空洞的处理方法。

It introduces the principle of the point-based rendering and some representative methods, discusses a way to deal with some holes on the surface which make in drawing the irregular geometric form.

youdao

外形为不规则的多边形几何状，没有平行的面，以大块为主，显示出大气的石艺特点。

Geometric shape is irregular polygon-shaped, not parallel to the surface to bulk, which shows the characteristics of the atmosphere of Stone Arts.

youdao

NGC 1427a是个典型的矮星系、不规则星系，它们的外形不规则，并且光度比规则星系(涡旋星系、椭圆星系)小。

NGC 1427a is an example of a dwarf irregular galaxy, a type of galaxy that is significantly less bright than regular galaxies and characterised by a peculiar shape.

youdao