1 % Feta (not the Font-En-Tja) music font -- Staff braces
2 % This file is part of LilyPond, the GNU music typesetter.
4 % Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
5 % Jan Nieuwenhuizen <janneke@gnu.org>
7 % LilyPond is free software: you can redistribute it and/or modify
8 % it under the terms of the GNU General Public License as published by
9 % the Free Software Foundation, either version 3 of the License, or
10 % (at your option) any later version.
12 % LilyPond is distributed in the hope that it will be useful,
13 % but WITHOUT ANY WARRANTY; without even the implied warranty of
14 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 % GNU General Public License for more details.
17 % You should have received a copy of the GNU General Public License
18 % along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 % We have to reduce the pixel-per-point value to
22 % support large brace glyphs in case we are using MetaPost
23 % (which by default sets `hppp' to 49.80244, regardless of
24 % the used `mag' value)
27 bpppix_ := 0.2; % ten times larger than original
29 numeric mm, pt, dd, bp, cm, pc, cc, in;
31 mm * bpppix_ = 2.83464;
32 pt * bpppix_ = 0.99626;
33 dd * bpppix_ = 1.06601;
35 cm * bpppix_ = 28.34645;
36 pc * bpppix_ = 11.95517;
37 cc * bpppix_ = 12.79213;
45 input feta-autometric;
48 staffsize# := 20 pt#; %% arbitrary
53 % We must let the design increase for each font to make sure that mftrace
54 % doesn't jack up the resolution too highly for the longer braces.
57 fet_beginfont ("feta-braces-" & char (97 + font_count),
58 (font_count + 1) * 20, "fetaBraces");
63 save code, braces_per_font;
65 braces_per_font := 64;
67 def draw_brace (expr height_sharp, width_sharp, slt_sharp, brace_number) =
68 save pendir, height, width, thin, thick, slt, pat;
73 height# := height_sharp;
74 width# := width_sharp;
77 fet_beginchar ("brace number " & decimal (brace_number),
78 "brace" & decimal (brace_number))
79 set_char_box (width#, 0, height# / 2, height# / 2);
81 define_pixels (height, width, slt);
86 y3l = y1 + height / 2;
93 pendir = unitvector (x3 - x1, y3l / 6 - y1);
94 penangle = angle pendir - 90;
95 penpos3 (thin, penangle);
96 penpos2 (thick, angle (z3 - z1) - 90);
97 penpos1 (2/3 thin, penangle);
103 .. simple_serif (z3r, z3l, 90)
105 .. z1l{dir (angle (z1r - z1l) - 90)}
107 .. z1r{-dir (angle (z1l - z1r) + 90)}
109 pat := subpath (0, 5) of pat
110 -- subpath (6, 7) of pat
119 save stafflinethickness;
122 linethickness := 0.5 pt#;
123 increment := 0.5 pt#;
126 for i := 0 step 1 until font_count:
129 number := braces_per_font * i;
131 for j := 0 step 1 until (braces_per_font - 1):
132 % message "l: "&decimal l;
133 % note: define_pixels (x) multiplies x by hppp,
134 % must never get bigger than infinity
136 if y > infinity / hppp:
137 message "Resolution and/or magnification is too high";
138 message "HPPP: "& decimal hppp &" Y: " & decimal y;
139 errmessage "please report to <bug-lilypond@gnu.org>";
142 % x should be about one staff space, taking brace to have
143 % default height of 3 staffs, this yields height / 3 / 4 = 12
144 % but 15 looks better
148 linethickness := min (0.5 pt#, y / 150);
150 draw_brace (y, x, linethickness, number);
153 number := number + 1;
157 fet_endfont ("feta-braces");