6 staffsize# := 20 pt#; %% arbitrary.
11 font_coding_scheme "feta braces";
14 def abc_encode_int (expr i) =
16 abc_encode_int(i div 26)&char(65 + i mod 26)
22 % we set the designsize arbitrarily at 10
26 fet_beginfont("feta-braces-" &char(97 + font_count), design_size);
36 def draw_brace (expr height_sharp, width_sharp, slt_sharp) =
38 save pendir, height, width, thin, thick, slt;
40 height# := height_sharp;
41 width# := width_sharp;
44 %% +1 is needed because fet_beginchar increments after dumping the strings.
45 fet_beginchar("brace number "&(decimal (code + 1)), "brace"&abc_encode_int(code+1),
46 "brace"&abc_encode_int (code+1))
48 set_char_box (0, width#, height#/2, height#/2);
50 define_pixels (height, width, slt);
61 pendir = unitvector(x3 - x1, y3l/6 - y1);
62 penangle = angle pendir - 90;
63 penpos3(thin, penangle);
64 penpos2(thick, angle(z3 -z1) -90 );
65 penpos1(2/3 thin, penangle);
68 fill z2r .. simple_serif (z3r, z3l, 90)
69 .. z2l .. simple_serif (z1l, z1r, 90) ..cycle;
71 addto currentpicture also currentpicture yscaled -1;
77 save stafflinethickness;
80 linethickness := 0.5pt#;
86 for i := 0 step 1 until font_count:
88 %% We can't store more than 64 (65?) height dimensions in a TFM
89 %% file, so we make small files.
91 for j := 0 step 1 until 63:
92 % message "l: "&decimal l;
93 % note: define_pixels (x) multiplies x by hppp,
94 % must never get bigger than infinity
95 y := min (y + increment, infinity/hppp - 1);
97 % x should be about one staff space, taking brace to have
98 % default height of 3 staffs, this yields height / 3 / 4 = 12
103 linethickness := min (0.5pt#, y/150);
105 draw_brace (y, x, linethickness);
110 fet_endfont("feta-braces");