3 texidoc = "Concave beams should be horizontal. informally spoken,
4 concave refers to the shape of the notes that are opposite a
5 beam. If an up-beam has high notes on its center stems, then we call
6 it concave. In this example, only the beams that are marked `horiz'
7 are considered concave by lily. They should be printed horizontally.
14 it is that makes a beam concave is still unclear.
16 Beams 1 and 3 should be sloped, 2 and 4 should be horizontal. Two
17 sane attempts of calculating concaveness of a beam fail to distinguish
25 %% This case seems easy: second beam should be horizontal.
27 %% SCS-I Menuet I, m15
36 %% SCS-I Menuet II, m20
41 fis,^"horiz." a c es d c
43 %%% Sarabande: the first beam, obviously more concave, is not horizontal,
44 %%% but is matched with the next beam in the piece: context.
54 %% concaveness:a: 0.12
57 % Hmm. Concaveness of both: 1.75
58 % %% SCS-VI Prelude, m81
64 % %% SCS-VI Prelude, m82
65 % %% slope = 0.1ss (possibly b.o. context?)
69 %%% Han-Wen: this should be concave
70 [a,16^"horiz." a' a a]
74 %%%% This should not be concave (hwn)
75 [\stemUp bes8 \stemDown d'8 bes8]
83 %% LilyPond-indent-level:2