Correcting straight stems

Hello,
do you know a mathematical formula for calculating the straight stems correction? It’s about correcting the width of the slanted stems so that they look the same in italic. Here is a tutorial, but unfortunately without a formula.

Correcting straight stems

That would be some rather simple trigonometry. :wink:

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You can have a look at the Italify plugin (which hasn’t seen any development in a long time, sorry), there is something akin to that in the “smart Italify” section.

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Thanks, I know that’s trigonometry. What formula is that?

I’m also interested in how cursivying works. Are the letters slanted and rotated at the same time? For example, with a cursive angle of 8 degrees. The letter is rotated by -4 degrees and slanted by 4 degrees? How do you ensure that the horizontal elements remain horizontal?

Cursify doesn’t quite work like that. Again, check out Italify, that rotates and slants (by a custom ratio, even). Smart Italify tries to rotate round segments and only slant straight segments.

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