orientation of mesh lines 网格线的定向
Turn off all snapping and enable face snapping. Then you can just start draw all the lines on the mesh.
将所有的拍摄关闭并使用正面拍摄，然后你就可以开始将网状图的所有都画出来了。
Next step is to create geometry from these lines so I just extruded the lines in Z axis and booleaned the basic mesh.
下一步是通过这些线来创建几何体，因此我只是挤压了Z轴上的线，并将基础的网格布尔体系化。
We study the extracting special lines from the mesh and sharpening of the mesh.
研究了三角网格数据的特征线提取以及锐化处理。
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