Algorithm for rapid slicing STL model
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摘要: 分析了现有的STL(stereolithography)模型切片处理算法的特点,在此基础上提出了基于分组矩阵和活性三角片表的切片算法.该算法根据三角片的最小和最大z坐标以及切片厚度,建立三角片的分组矩阵和活性三角片表,并在活性三角片表中建立局部的三角片邻接拓扑关系,以减少在切片过程中对三角片的遍历次数、排序次数以及求交计算量,简化了切片轮廓环的构造过程,从而有效地提高了切片算法的整体效率.Abstract: The advantage and disadvantage of existing slicing algorithms for stereolithography model were analyzed, and an algorithm based on the grouping matrix and the active triangle table was developed. In the algorithm, the grouping matrix and the active triangle table were established according the minimum and maximum z coordinates of the triangular facets, which reduce the times of traversing and sorting for the triangular facets and the times of intersecting with the slicing plane in the slicing processes, and which simplify the process of constructing the slice contour. By this method, the efficiency of the slicing algorithm were increased effectively.
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Key words:
- triangular matrices /
- topological features /
- rapid prototyping /
- slicing /
- triangle model
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