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Valley Average of Lines (VAL) and of Directions (VAD) in 3D
Computer-Aided Design ( IF 4.3 ) Pub Date : 2020-10-08 , DOI: 10.1016/j.cad.2020.102957 Mukul Sati , Jarek Rossignac
中文翻译:
3D中线的谷底平均值(VAL)和方向的谷底平均值(VAD)
更新日期:2020-10-30
Computer-Aided Design ( IF 4.3 ) Pub Date : 2020-10-08 , DOI: 10.1016/j.cad.2020.102957 Mukul Sati , Jarek Rossignac
Extending (Sati et al., 2016) to 3D, we propose definitions and closed-form expressions for what we call the Valley Average of Directions (VAD), , of a set of directions (unit vectors) and for what we call the Valley Average of Lines (VAL), , of a set of lines. is independent of the input order. When the are parallel, is parallel to them and passes through the centroid of their intersections with any normal plane. When all contain point , passes through .
中文翻译:
3D中线的谷底平均值(VAL)和方向的谷底平均值(VAD)
将(Sati等,2016)扩展到3D,我们为所谓的“山谷平均方向”(VAD)提出了定义和闭式表达式, ,一组 方向(单位矢量)以及我们所说的谷线平均值(VAL) ,一组 线。 与输入顺序无关。当。。。的时候 是平行的 平行于它们,并穿过它们与任何法线平面相交的质心。当全部 包含点 , 经过 。