A stem-centered triangle notehead in LilyPond

How do we get a stem-centered triangle notehead in LilyPond?

Max implemented an answer last year reusing the triangle- or do-shaped notehead from the shape notes series. Here's the first example.



To me the example shows two different series of notes. The first four notes show a type of "inward-pointing" orientation while the last four notes show a type of "outward-pointing" orientation.

Later Max sent even more examples.



These are perfect. The outward-pointing triangles in measure two will handle both Sciarrino's lip- and tongue-pizzicati and also the "play the highest pitch, whatever that is" symbol in Penderecki. The inward-pointing triangles in measure three are amazingly odd and so visually distinct, at the same time. To what use will they go? Maybe ingressive air or some type of reversed bowing or playing. There's definitely something decidedly "reversed" about these shapes.

A good accent notehead in LilyPond

A couple of weeks ago Max took up the challenge of making a good accent-shaped notehead. I first mailed the list back in April last year and then Jamie brought the request up again in February. Max did some pretty amazing stuff. He got the stems to center horizontally on the glyph, both up and down. And he and Jamie convinced me that a calligraphic version of glyph with thicker lower edge actually worked better than versions that were completely symmetric across the x-axis. Here are some of different variations we tried. Max cooked all these up and Jamie and I kept going through the different combinations.





And here's the final version. The trick wound up being that the calligraphic glyph had to rise just above center to make the vertical spacing work right.




This work patched into 2.11.22. And so now we have the right glyph for a tongue-ram.