在和对角线的-背面的三角形的背面留下的边细分对角线的区段离别的。
Subdivide the diagonal section at the back-left side of the triangle with one diagonal-back parting.
本文主要研究基于三角形和四边形的混合细分曲面的尖锐、半尖锐特征的生成方法。
Generation of sharp and semi-sharp features such as crease, cone and corner over the quad and triangle hybrid mesh is investigated.
通过对单个平面三角片的单独细分，最后我们得到一张插值原三角网格顶点和顶点法向的光滑曲面。
We subdivide very single planar triangle independently, and finally get a smooth surface interpolating the vertices of the original triangle mesh and their normals.
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