+%
+% feta-beugel.mf -- [Staff] braces
+%
+% source file of the Feta (not an acronym for Font-En-Tja)
+% pretty-but-neat music font
+%
+% (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+% Jan Nieuwenhuizen <janneke@gnu.org>
+
+input feta-autometric;
input feta-macros;
+
+staffsize# := 20 pt#; %% arbitrary.
+
input feta-params;
-save code;
-code :=0;
+
+% we must let the design increase for each
+% font to make sure that mftrace doesn't jack up the resolution too highly
+% for the longer braces.
+fet_beginfont ("feta-braces-" & char (97 + font_count), (font_count + 1) * 20,
+ "fetaBraces");
+
+mode_setup;
-def draw_brace( expr height_sharp, width_sharp) =
- save pendir, height, width, thin, thick;
+
+save code, braces_per_font;
+code := 64;
+braces_per_font := 64;
+
+def draw_brace (expr height_sharp, width_sharp, slt_sharp, brace_number) =
+
+ save pendir, height, width, thin, thick, slt;
save penangle;
height# := height_sharp;
- width# := width_sharp;
+ width# := width_sharp;
+ slt# := slt_sharp;
+
+%% +1 is needed because fet_beginchar increments after dumping the strings.
+fet_beginchar ("brace number " & (decimal (brace_number)),
+ "brace" & decimal(brace_number))
- beginchar(code, width#, height#/2, height#/2);
- code := incr code;
+ set_char_box (0, width#, height#/2, height#/2);
- define_pixels (height, width);
- thin = 2 stafflinethickness;
+ define_pixels (height, width, slt);
+ thin = 2 slt;
thick = .5 width;
z2 = .5 [z1, z3];
- y3 = y1 + height/2;
+ y3l = y1 + height/2;
x3 = x1 + width;
y1 =0;
x3 = - width / 2;
pair pendir;
- pendir = unitvector(x3 - x1, y3/6 - y1);
+ pendir = unitvector(x3 - x1, y3l/6 - y1);
penangle = angle pendir - 90;
penpos3(thin, penangle);
penpos2(thick, angle(z3 -z1) -90 );
.. z2l .. simple_serif (z1l, z1r, 90) ..cycle;
addto currentpicture also currentpicture yscaled -1;
-endchar;
+fet_endchar;
enddef;
-for i := font_count * 256 step 1 until (font_count + 1) * 256 - 1:
- % note: define_pixels (x) multiplies x by hppp,
- % we must never get bigger than infinity
- y := min ((i + 1) * 0.25pt#, infinity/hppp - 1);
- x := y / 12;
- draw_brace (y, x);
+
+
+save stafflinethickness;
+save increment;
+
+linethickness := 0.5pt#;
+increment := 0.5pt#;
+y := 10pt#;
+
+for i := 0 step 1 until font_count:
+
+ save number;
+
+ number := braces_per_font * i;
+
+ for j := 0 step 1 until (braces_per_font -1):
+ % message "l: "&decimal l;
+ % note: define_pixels (x) multiplies x by hppp,
+ % must never get bigger than infinity
+ y := y + increment;
+ if y > infinity/hppp:
+ message "Resolution and/or magnification is too high";
+ error please report: <bug-lilypond@gnu.org>;
+ fi
+
+ % x should be about one staff space, taking brace to have
+ % default height of 3 staffs, this yields height / 3 / 4 = 12
+ % but 15 looks better
+ x := y / 15;
+
+ increment := x / 10;
+ linethickness := min (0.5pt#, y/150);
+ if i = font_count:
+ draw_brace (y, x, linethickness, number);
+ fi
+ number := number + 1;
+ endfor;
endfor
+
+fet_endfont("feta-braces");