Triangular Facet Model is easy to be implemented, but it needs to display enormous amount of triangles.

三角片离散法实现简单，但在显示时需要渲染大量的三角片。

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For restoration model of STL format, the searching efficiency of triangular cutter projected area facet in CLP calculation is improved, therefore the tool trajectory generation is speed up.

在此基础上分别研究了锥形磨针、平底磨针和球形磨针三种磨削刀具进行牙齿曲面磨削时的刀具轨迹生成算法。

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