Re: [csswg-drafts] [css-fonts-4] Should the OpenType spec dictate the acceptable values for variable font CSS properties?

It's important to consider the differences between slant or oblique vs. italic. The former defines a vector transform where using an angle as an input parameter produces the desired results, the latter defines a particular style implemented by a font designer that can differ from the regular style in more ways than just slant angle.
In variation fonts, a particular design axis such as "italic" would typically define the variation range between the regular and italic styles, and the scale and meaning of the number assigned along that design variation axis isn't necessarily going to be translated as just angle - the variation changes applied as a result of selecting a particular number along the italic variation axis could affect the font glyphs in different ways.

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Received on Tuesday, 16 January 2018 15:49:31 UTC