Normals determine whether a given triangle face is lit.
法线会判断指定的三角形表面是否会被照亮。
But in the east culture, high cheekbones is formed in the face, triangle face too wide, protruding, can give a person with cold feeling, and show gaunt, aging.
但在东方的文化中,过高是颧骨形成三角形面庞,中面部过宽、过凸,会给人以冷酷的感觉,并显憔悴、衰老。
For a triangle in a given 3-d mesh, the order in which the triangle's vertex positions are specified determines whether the triangle face is a front or back face.
如果是指定的3 - d网状结构中的三角形,三角形顶点位置的指定顺序会决定三角形表面是正对面或背对面。
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