In exporting a Blender mode, by checking use_smooth, the smooth effect can be exported, using:
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# use vertex normal (full smooth effect)
# use face normal (no smooth effect)
However, like in the 3D view port, the effect seems binary: I have all or none smooth effect.
Is there a way to use the auto_smooth option (use_auto_smooth in python) and the related angle (auto_smooth_angle in python) to set some more precise smooth effect in the export?
From reading the 2 values, I should recompute the vertex normals?
Thanks in advance for your help.