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My glyphs are all perfectly hinted, why do some stems have different widths (or appear fuzzy, or fade away completely)?

April 26, 2017appear away different fade fuzzy glyphs hinted perfectly stems widths

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My glyphs are all perfectly hinted, why do some stems have different widths (or appear fuzzy, or fade away completely)?

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Both PostScript and TrueType require that glyphs be drawn in a clockwise fashion. Some rasterizers don’t care. But other rasterizers will have difficulties with counter-clockwise paths and produced stems of different widths when they should be the same, or fuzzy stems, or even nothing at all. The solution to this is to run Element->Correct Direction on all your glyphs before generating a font. But sometimes the poor rasterizer just can’t do the right thing…