interpolation_issues

Detect any interpolation issues in the font.

interpolation_issues

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

Rationale

When creating a variable font, the designer must make sure that corresponding paths have the same start points across masters, as well as that corresponding component shapes are placed in the same order within a glyph across masters. If this is not done, the glyph will not interpolate correctly.

Here we check for the presence of potential interpolation errors using the interpolatable crate.

Proposal

• https://github.com/fonttools/fontbakery/issues/3930

Profiles

• universal (in section 'Universal Profile Checks')

• googlefonts (in section 'Universal Profile Checks')