opentype__slant_direction

Checking direction of slnt axis angles

opentype/slant_direction

• Applies to: TTF
• Fontspector can hotfix?: no
• Fontspector can fix sources?: no

Rationale

The 'slnt' axis values are defined as negative values for a clockwise (right) lean, and positive values for counter-clockwise lean. This is counter-intuitive for many designers who are used to think of a positive slant as a lean to the right.

This check ensures that the slant axis direction is consistent with the specs.

https://docs.microsoft.com/en-us/typography/opentype/spec/dvaraxistag_slnt

Proposal

• https://github.com/fonttools/fontbakery/pull/3910

Profiles

• opentype (in section 'Opentype Specification Checks')

• universal (in section 'Opentype Specification Checks')

• googlefonts (in section 'Opentype Specification Checks')