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In the Blender api, it is possible to get the normal of the vertex and face, but it is not possible to get the normal of the edge. Is there any formula for calculating normal of the edge or some other way to get normal?

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  • $\begingroup$ In this answer blender.stackexchange.com/a/177331/15543 I've estimated "edge normal" by averaging connected face normals. (Could have estimated via edges vertex normal instead.) The result for boundary edges will vary the most using aforementioned methods. $\endgroup$ – batFINGER May 29 at 17:52

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