I'm not familiar with Metafont -- is this what you're referencing? https://ctan.org/pkg/metafont?lang=en
Yes, that is METAFONT.
You'll find it more accessible via METAPOST, and there have been font designs made using it. Better starting link is:
https://davidcarlisle.github.io/uk-tex-faq/FAQ-mfptutorials....
See “The Concept of a Meta-Font”: https://gwern.net/doc/design/typography/1982-knuth.pdf
Not the OP, but probably (please correct me if I'm wrong...) Knuth's claim was that a font's metrics could be described as geometric transformations and equations. I believe most of the TeX typefaces were described with Metafont.
Yes, that is METAFONT.
You'll find it more accessible via METAPOST, and there have been font designs made using it. Better starting link is:
https://davidcarlisle.github.io/uk-tex-faq/FAQ-mfptutorials....
See “The Concept of a Meta-Font”: https://gwern.net/doc/design/typography/1982-knuth.pdf
Not the OP, but probably (please correct me if I'm wrong...) Knuth's claim was that a font's metrics could be described as geometric transformations and equations. I believe most of the TeX typefaces were described with Metafont.