2 % feta-beugel.mf -- Staff braces
4 % source file of the Feta (not an acronym for Font-En-Tja)
5 % pretty-but-neat music font
7 % (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
8 % Jan Nieuwenhuizen <janneke@gnu.org>
10 input feta-autometric;
13 staffsize# := 20 pt#; %% arbitrary
18 % We must let the design increase for each font to make sure that mftrace
19 % doesn't jack up the resolution too highly for the longer braces.
22 fet_beginfont ("feta-braces-" & char (97 + font_count),
23 (font_count + 1) * 20, "fetaBraces");
28 save code, braces_per_font;
30 braces_per_font := 64;
32 def draw_brace (expr height_sharp, width_sharp, slt_sharp, brace_number) =
33 save pendir, height, width, thin, thick, slt, pat;
38 height# := height_sharp;
39 width# := width_sharp;
42 fet_beginchar ("brace number " & decimal (brace_number),
43 "brace" & decimal (brace_number))
44 set_char_box (width#, 0, height# / 2, height# / 2);
46 define_pixels (height, width, slt);
51 y3l = y1 + height / 2;
58 pendir = unitvector (x3 - x1, y3l / 6 - y1);
59 penangle = angle pendir - 90;
60 penpos3 (thin, penangle);
61 penpos2 (thick, angle (z3 - z1) - 90);
62 penpos1 (2/3 thin, penangle);
68 .. simple_serif (z3r, z3l, 90)
70 .. z1l{dir (angle (z1r - z1l) - 90)}
72 .. z1r{-dir (angle (z1l - z1r) + 90)}
74 pat := subpath (0, 5) of pat
75 -- subpath (6, 7) of pat
84 save stafflinethickness;
87 linethickness := 0.5 pt#;
91 for i := 0 step 1 until font_count:
94 number := braces_per_font * i;
96 for j := 0 step 1 until (braces_per_font - 1):
97 % message "l: "&decimal l;
98 % note: define_pixels (x) multiplies x by hppp,
99 % must never get bigger than infinity
101 if y > infinity / hppp:
102 message "Resolution and/or magnification is too high";
103 message "HPP: "& decimal hpp &" Y: " & y;
104 error "please report to <bug-lilypond@gnu.org>";
107 % x should be about one staff space, taking brace to have
108 % default height of 3 staffs, this yields height / 3 / 4 = 12
109 % but 15 looks better
113 linethickness := min (0.5 pt#, y / 150);
115 draw_brace (y, x, linethickness, number);
118 number := number + 1;
122 fet_endfont ("feta-braces");