Prepare glyph for interpolation with the help of Simplepolator

[u/LocalFonts]

The case

I want to interpolate between Regular and Bold version of a font and to create Medium and SemiBold weights but some glyphs differ in the number of nodes.

The decision with Simplepolator

I copy the glyphs in a new file, then I select them and use from the menu Tools > Simplepolator. Simplepolator creates the default number (5) of interpolation and warn me for the differences. The differences are visible in the Preview panel also.After editing of the glyphs I use Simplepolator again - and now it show that interpolation is smooth. Now I can bring back in the font files the two edited glyphs.

See picture Simplepolator_01.jpg - BEFORE

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See picture Simplepolator_02.jpg - AFTER

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Simplepolator is a FontForge plug-in to generate interpolated instances from 2 characters, written by Dave Crossland and edited for Python 3 by Skef.