*** empty log message ***

[lilypond.git] / mf / feta-beugel.mf

diff --git a/mf/feta-beugel.mf b/mf/feta-beugel.mf
index df625dc0c3673fda12d081825c373e086aa2f917..f87c7edbf408d1583156ff7c8d16058ea6a1b92a 100644 (file)
--- a/mf/feta-beugel.mf
+++ b/mf/feta-beugel.mf
@@ -1,30 +1,60 @@
+% 
+% 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(incr code, width#, height#/2, height#/2);
- 
-       define_pixels (height, width);
-       thin = 2 stafflinethickness;
-       thick = .5 interline;
+       set_char_box (0, width#, height#/2, height#/2);
+         
+       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 );
@@ -35,10 +65,46 @@ def draw_brace( expr height_sharp, width_sharp) =
                .. z2l .. simple_serif (z1l, z1r, 90) ..cycle;
 
        addto currentpicture also currentpicture yscaled -1;
-endchar;
+fet_endchar;
 enddef;
 
 
-for h :=  2 staffsize#  step 2 pt# until (6 * staffsize#):
-       draw_brace(h, interline# );
+
+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");