]> git.donarmstrong.com Git - lilypond.git/blobdiff - mf/feta-klef.mf
release: 1.3.121
[lilypond.git] / mf / feta-klef.mf
index 2e846acb431d9c87428f131056a3f0ba1f47bd5d..d70391ed367ef597b8aece87411a8374774eeeac 100644 (file)
@@ -1,36 +1,31 @@
-% feta-klef.mf --  implement Clefs
+% feta-klef.mf --  implement Clefs -*-Fundamental-*-
 % 
 % part of LilyPond's pretty-but-neat music font
 %
 % source file of the Feta (not the Font-En-Tja) music font
 % 
-% (c) 1997, 1998 Han-Wen Nienhuys <hanwen@stack.nl>,
-% Jan Nieuwenhuizen <janneke@gnu.org>
+% (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>,
+% Jan Nieuwenhuizen <janneke@gnu.org>,
+% Juergen Reuter <reuterj@ira.uka.de>
 
 
 fet_begingroup("clefs");
 
 %
-% [Ross] says that clefs take 1 interline space on the left and right
+% [Ross] says that clefs take 1 staff_space space on the left and right
 %
 def set_horizontal_spacing =
        save left_space ,right_space;
-       left_space# = reduced_il#;
-       right_space# = reduced_il#;
+       left_space# = 0;
+       right_space# = 0;
 enddef;
 
-def draw_staff(expr first, last)=
-       pickup pencircle scaled stafflinethickness;
-       for i:= first step 1 until last:
-               draw (- interline, i* interline) .. (4 interline, i* interline);
-       endfor
-       enddef;
 
 % [Wanske] says the bulbs should be positioned about 1/4 right of the
 % "arrow"
 def draw_c_clef (expr reduction) = 
        save hair, norm, reduced_il, right_edge;
-       reduced_il#=interline#*reduction;
+       reduced_il#=staff_space#*reduction;
        norm#:=2/3reduced_il#;
        hair#:=1/6norm#;
 
@@ -80,16 +75,16 @@ def draw_c_clef (expr reduction) =
        draw_flare(z7r,180,-90,hair,norm-1/2hair);
        enddef;
 
-fet_beginchar ("C clef", "alto", "altoclef")
+fet_beginchar ("C clef", "C", "altoclef")
        if test = 1:
-               draw_staff (-2,2);
+               draw_staff (-2,2, 0.0);
        fi;
        draw_c_clef (1.0);
 fet_endchar;
 
-fet_beginchar ("C clef", "alto_change", "caltoclef")
+fet_beginchar ("C clef", "C_change", "caltoclef")
        if test = 1:
-               draw_staff (-2,2);
+               draw_staff (-2,2, 0.0);
        fi;
        draw_c_clef (.8);
 fet_endchar;
@@ -105,16 +100,16 @@ fet_endchar;
 % [Wanske] says that the extreme x point should be exactly between 
 % the dots, but her picture shows that the extreme is ~ 0.2 ss lower
 
-def draw_bass_klef(expr exact_center, reduction) = 
+def draw_bass_clef(expr exact_center, reduction) = 
        save reduced_il, left_tilt, left_thick, ball_to_right;
-       reduced_il# = interline# * reduction;
+       reduced_il# = staff_space# * reduction;
        
        set_horizontal_spacing;
        ball_to_right# = 2.1 reduced_il#;
        set_char_box(left_space# +
                - xpart exact_center,
                right_space# +
-               xpart exact_center + ball_to_right#, 
+               xpart exact_center + ball_to_right# + 7/12 reduced_il#
                - ypart exact_center + 2.5 reduced_il#, 
                ypart exact_center +reduced_il#);
 
@@ -131,7 +126,7 @@ def draw_bass_klef(expr exact_center, reduction) =
        x3l - x1l =  ball_to_right;
        x2 = .5 [x1,x3];
        x3l - x3r = .48 reduced_il;
-       y3l = -0.05 interline;
+       y3l = -0.05 staff_space;
        x4 = x1l - stafflinethickness;
        y4 = -2.2  reduced_il;
        z5 = (x3l +  1/3 reduced_il, .5 reduced_il);
@@ -152,7 +147,7 @@ def draw_bass_klef(expr exact_center, reduction) =
        penlabels(1,2,3,4);
 
        save dot_diam;
-       2 dot_diam = reduction* (interline - stafflinethickness);
+       2 dot_diam = reduction* (staff_space - stafflinethickness);
        pickup pencircle scaled dot_diam;
        draw z5;
        draw z5 yscaled -1;
@@ -160,14 +155,14 @@ enddef;
 
 
 
-fet_beginchar("F clef ", "bass", "bassclef")
+fet_beginchar("F clef ", "F", "bassclef")
        if test = 1:
-               draw_staff(-3,1);
+               draw_staff(-3,1, 0.0);
        fi;
-       draw_bass_klef((.5 interline#, 0), 1.0);
+       draw_bass_clef((.5 staff_space#, 0), 1.0);
 fet_endchar;
-fet_beginchar("F clef (reduced)", "bass_change", "cbassclef")
-       draw_bass_klef((.4 interline#, 0),0.8);
+fet_beginchar("F clef (reduced)", "F_change", "cbassclef")
+       draw_bass_clef((.4 staff_space#, 0),0.8);
 fet_endchar;
 
 
@@ -188,11 +183,14 @@ fet_endchar;
 % Ikzelf heb bijvoorbeeld over mijn eerste gave G-sleutel
 % 35 kilobyte metafont, 12 patchlevels, 0 vriendinnen en 45 dagen gedaan
 %
+%  -- vrij naar Van Kooten & De Bie
+%
+
 def draw_gclef (expr exact_center, reduction)=
        save reduced_il, downstroke_dir, downstroke_angle, hair, center;
        save breapth_factor, inner_thick_end, thinness, thickness, thinnib;
        save inner_start_angle, thinness, thinpen;
-       reduced_il# = interline# * reduction;
+       reduced_il# = staff_space# * reduction;
        define_pixels(reduced_il);
        pair downstroke_dir, center;
 
@@ -301,14 +299,756 @@ def draw_gclef (expr exact_center, reduction)=
 enddef;
 
 
-fet_beginchar("G clef", "violin", "violinclef")
+fet_beginchar("G clef", "G", "trebleclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_gclef((1.7 staff_space#,0), 1.0);
+fet_endchar;
+fet_beginchar("G clef", "G_change", "ctrebleclef")
+       draw_gclef((1.3 staff_space#,0), .8);
+fet_endchar;
+
+%%%%%%%%
+%
+%
+%
+% Editio Vaticana
+%
+%
+%
+def draw_vaticana_do_clef(expr exact_center, reduction) = 
+       save reduced_il;
+
+       reduced_il# = staff_space# * reduction;
+       
+       set_char_box(0.4reduced_il#, 0.4reduced_il#, 0, reduced_il#);
+
+       define_pixels(reduced_il);
+
+       pickup pencircle xscaled stafflinethickness yscaled 0.6reduced_il;
+
+       save za, zb, zc, zd, ze, zf;
+       pair za, zb, zc, zd, ze, zf;
+
+       za = exact_center + (-0.0reduced_il, -.45reduced_il);
+       zb = exact_center + (-0.2reduced_il, -.50reduced_il);
+       zc = exact_center + (-0.4reduced_il, -.25reduced_il);
+       zd = exact_center + (-0.4reduced_il, +.25reduced_il);
+       ze = exact_center + (-0.2reduced_il, +.50reduced_il);
+       zf = exact_center + (-0.0reduced_il, +.45reduced_il);
+       draw za .. zb .. zc --  % lower punctum
+            zd .. ze .. zf;    % upper punctum
+enddef;
+
+
+fet_beginchar("Ed. Vat. do clef", "vaticana_do", "vatdoclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_vaticana_do_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Ed. Vat. do clef", "vaticana_do_change", "vatcdoclef")
+       draw_vaticana_do_clef((0,0), 1.0); % no reduction
+fet_endchar;
+
+
+def draw_vaticana_fa_clef(expr exact_center, reduction) = 
+
+       save reduced_il, z;
+       reduced_il# = staff_space# * reduction;
+       define_pixels(reduced_il);
+
+       save za, zb, zc, zd, ze;
+       pair za, zb, zc, zd, ze;
+
+       %stem
+       pickup pencircle scaled stafflinethickness;
+       xpart za = xpart zb =
+               xpart exact_center + 0.4reduced_il;
+       ypart za = ypart exact_center = ypart zb + 1.5reduced_il;
+       draw za .. zb;
+
+       %left-handed punctum
+       pickup pencircle xscaled stafflinethickness yscaled 0.5reduced_il;
+       zc = exact_center +
+               (+0.4reduced_il, -0.05reduced_il);
+       zd = exact_center +
+               (+0.2reduced_il, +0.05reduced_il);
+       ze = exact_center +
+               (+0.0reduced_il, +0.00reduced_il);
+       draw zc .. zd .. ze;
+
+       %right-handed puncta as in do clef
+       draw_vaticana_do_clef(
+               exact_center +
+               (+0.8reduced_il + 1.25stafflinethickness, 0),
+               reduction);
+
+       set_char_box(0.5reduced_il#, 1.5reduced_il#, 0, reduced_il#);
+enddef;
+
+
+fet_beginchar("Ed. Vat. fa clef", "vaticana_fa", "vatfaclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_vaticana_fa_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Ed. Vat. fa clef", "vaticana_fa_change", "vatcfaclef")
+       draw_vaticana_fa_clef((0,0), 1.0); % no reduction
+fet_endchar;
+
+%%%%%%%%
+%
+%
+%
+% Editio Medicaea
+%
+%
+%
+def draw_medicaea_do_clef(expr exact_center, reduction) = 
+       save reduced_il, reduced_slt;
+       reduced_il# = staff_space# * reduction;
+       reduced_slt# = stafflinethickness# * reduction;
+       define_pixels(reduced_il);
+       define_pixels(reduced_slt);
+
+       save flag_height;
+       flag_height# = 0.5 reduced_il#;
+       define_pixels(flag_height);
+
+       %lower flag
+       save za, zb;
+       pair za, zb;
+       pickup pencircle xscaled reduced_slt yscaled flag_height;
+       xpart exact_center
+               = xpart za + 0.5 reduced_il
+               = xpart zb - 0.5 reduced_il;
+       ypart za = ypart exact_center - 0.5 flag_height
+                       - 0.5 (staff_space - reduced_il);
+       ypart zb = ypart za - reduced_il + flag_height;
+       draw za .. zb;
+
+       %upper flag
+       save za, zb;
+       pair za, zb;
+       pickup pencircle xscaled reduced_slt yscaled flag_height;
+       xpart exact_center
+               = xpart za + 0.5 reduced_il
+               = xpart zb - 0.5 reduced_il;
+       ypart za = ypart exact_center - 0.5 flag_height
+                       - 0.5 (staff_space - reduced_il)
+                       + staff_space;
+       ypart zb = ypart za - reduced_il + flag_height;
+       draw za .. zb;
+
+       %stem
+       save za, zb;
+       pair za, zb;
+       pickup pencircle scaled reduced_slt;
+       xpart za = xpart zb = xpart exact_center - 0.5 reduced_il;
+       ypart exact_center
+               = ypart za + 1.5 reduced_il
+               = ypart zb - 1.5 reduced_il;
+       draw za .. zb;
+
+       set_char_box(0.5reduced_il#, 1.5reduced_il#,
+                    1.5reduced_il#, 1.5reduced_il#);
+enddef;
+
+
+fet_beginchar("Ed. Med. do clef", "medicaea_do", "meddoclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_medicaea_do_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Ed. Med. do clef", "medicaea_do_change", "cmeddoclef")
+       draw_medicaea_do_clef((0,0), .8);
+fet_endchar;
+
+
+def draw_medicaea_fa_clef(expr exact_center, reduction) = 
+       % inspired by Regensburger Edition of Medicaea (1885/86), in:
+       % MGG, volume 2, col. 1327 ("Choralreform"), fig. 2.
+
+       save reduced_il, reduced_slt;
+       reduced_il# = staff_space# * reduction;
+       reduced_slt# = stafflinethickness# * reduction;
+       define_pixels(reduced_il);
+       define_pixels(reduced_slt);
+
+       save za, zb, zc, zd, ze;
+       pair za, zb, zc, zd, ze;
+
+       %stem
+       pickup pencircle scaled stafflinethickness;
+       xpart za = xpart zb =
+               xpart exact_center + 0.4reduced_il;
+       ypart za = ypart exact_center = ypart zb + 1.5reduced_il;
+       draw za -- zb;
+
+       %left-handed punctum
+       pickup pencircle xscaled reduced_slt yscaled reduced_il;
+       zc = exact_center +
+               (+0.4reduced_il, 0);
+       zd = exact_center +
+               (+0.0reduced_il, 0);
+       draw zc -- zd;
+
+       %right-handed puncta as in do clef
+       draw_medicaea_do_clef(
+               exact_center +
+               (+1.1reduced_il + 1.25stafflinethickness, 0),
+               reduction);
+
+       set_char_box(reduced_il#/2, 2.6reduced_il#, 0, reduced_il#);
+enddef;
+
+
+fet_beginchar("Ed. Med. fa clef", "medicaea_fa", "medfaclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_medicaea_fa_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Ed. Med. fa clef", "medicaea_fa_change", "cmedfaclef")
+       draw_medicaea_fa_clef((0,0), .8);
+fet_endchar;
+
+
+%%%%%%%%
+%
+%
+%
+% Mensural Notation
+%
+%
+%
+brevis_wid# := 2 staff_space#;
+
+def draw_brevis(expr exact_center, reduction, small_width, small_height) =
+       %
+       % inspired by function draw_brevis of
+       % feta-bolletjes.mf
+       %
+       save reduced_slt, reduced_nht;
+       save stem_width, head_width;
+       save serif_size, serif_protrude;
+       save holeheight, beamheight;
+
+       reduced_slt# = stafflinethickness# * reduction;
+       reduced_nht# = noteheight# * reduction;
+       stem_width# = 1.4 reduced_slt#;
+       if small_width:
+               head_width# = 0.5brevis_wid# * reduction;
+       else:
+               head_width# = brevis_wid# * reduction;
+       fi;
+       if small_height:
+               serif_size# = 0.64 reduced_slt#;
+               serif_protrude# = 0.96 serif_size#;
+               holeheight# = 3 reduced_slt#;
+               beamheight# = 0.32(reduced_nht# - holeheight#);
+       else:
+               serif_size# = 1.0 reduced_slt#;
+               serif_protrude# = 1.5 serif_size#;
+               holeheight# = 3 reduced_slt#;
+               beamheight# = 0.5(reduced_nht# - holeheight#);
+       fi;
+       define_pixels(reduced_slt);
+       define_pixels(stem_width);
+       define_pixels(head_width);
+       define_pixels(serif_size);
+       define_pixels(serif_protrude);
+       define_pixels(beamheight);
+
+       penpos1(stem_width, 0);
+       penpos2(stem_width, 0);
+       penpos3(beamheight, 90);
+       penpos4(beamheight, 90);
+       penpos5(stem_width, 180);
+
+       z1l = exact_center;
+       z2l = z1l + (0, -reduced_slt/2);
+       z3r = z2r + serif_size*(1,-1);
+       y4r = y3r;
+       x4l = x1l + head_width/2;
+       z5l = z3l + (-serif_size, -serif_protrude);
+
+       penlabels(1,2,3,4,5);
+       fill z1r -- z1l -- z5r{down} .. z5l{up} .. z3l{right}
+               -- z4l -- z4r -- z3r{left} .. z2r{up} -- cycle;
+enddef;
+
+
+def draw_mensural_i_c_clef(expr exact_center, reduction) = 
+       draw_brevis(exact_center, reduction, false, false);
+
+       save reduced_il, reduced_slt;
+       save stem_width;
+
+       reduced_il# = staff_space# * reduction;
+       reduced_slt# = stafflinethickness# * reduction;
+       stem_width# = 1.4 reduced_slt#;
+
+       define_pixels(reduced_il);
+       define_pixels(reduced_slt);
+       define_pixels(stem_width);
+
+       penpos6(stem_width, 0);
+       penpos7(stem_width, 0);
+       z6l = exact_center;
+       z7l = z6l + (0, -2reduced_il);
+       fill z6l -- z7l -- z7r -- z6r -- cycle;
+       penpos8(stem_width, 0);
+       penpos9(stem_width, 0);
+       z8l = z6l + (-3reduced_slt, 0);
+       z9l = z8l + (0, -2reduced_il);
+       fill z8l -- z9l -- z9r -- z8r -- cycle;
+
+       addto currentpicture also currentpicture
+               yscaled -1 shifted (0, 2*(ypart exact_center));
+       addto currentpicture also currentpicture 
+               xscaled -1 shifted (2x4l,0);
+
+       set_char_box(0, 2head_width#,
+                    6reduced_slt#*reduction, 6reduced_slt#*reduction);
+enddef;
+
+
+fet_beginchar("mensural c clef", "mensural1_c", "mens1cclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_mensural_i_c_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("mensural c clef", "mensural1_c_change", "cmens1cclef")
+       draw_mensural_i_c_clef((1.3 staff_space#,0), .8);
+fet_endchar;
+
+
+def draw_mensural_ii_c_clef(expr exact_center, reduction) = 
+       draw_brevis(exact_center, reduction, true, true);
+
+       save reduced_il, reduced_slt;
+       save stem_width, interline;
+
+       reduced_il# = staff_space# * reduction;
+       reduced_slt# = stafflinethickness# * reduction;
+       stem_width# = 1.4 reduced_slt#;
+       interline# = staff_space#;
+
+       define_pixels(reduced_il);
+       define_pixels(reduced_slt);
+       define_pixels(stem_width);
+       define_pixels(interline);
+
+       penpos6(stem_width, 0);
+       penpos7(stem_width, 0);
+       z6l = exact_center + (0, -interline/2);
+       z7l = z6l + (0, -1.5reduced_il);
+       fill z6l -- z7l -- z7r -- z6r -- cycle;
+
+       addto currentpicture also currentpicture
+               yscaled -1 shifted (0, 2*(ypart exact_center) - interline);
+       addto currentpicture also currentpicture
+               yscaled -1 shifted (0, 4*(ypart exact_center));
+       addto currentpicture also currentpicture 
+               xscaled -1 shifted (2x4l,0);
+
+       set_char_box(0, 2head_width#,
+                    noteheight#*4*reduction, noteheight#*4*reduction);
+enddef;
+
+
+fet_beginchar("mensural c clef", "mensural2_c", "mens2cclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_mensural_ii_c_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("mensural c clef", "mensural2_c_change", "cmens2cclef")
+       draw_mensural_ii_c_clef((1.3 staff_space#,0), .8);
+fet_endchar;
+
+
+def draw_mensural_iii_c_clef(expr exact_center, reduction) =
+       % inspired by Ockeghem, "Missa Prolationum", in: MGG, volume
+       % 9, table 94.
+       draw_mensural_ii_c_clef(exact_center, reduction);
+
+       addto currentpicture also currentpicture
+               shifted (0, -interline);
+
+       set_char_box(0, 2head_width#,
+                    noteheight#*6*reduction, noteheight#*6*reduction);
+enddef;
+
+
+fet_beginchar("mensural c clef", "mensural3_c", "mens3cclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_mensural_iii_c_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("mensural c clef", "mensural3_c_change", "cmens3cclef")
+       draw_mensural_iii_c_clef((0,0), .8);
+fet_endchar;
+
+def draw_diamond(expr exact_center, reduction) =
+       save stem_width, reduced_il, reduced_nht, holeheight, beamheight;
+       save rh_height, rh_width;
+
+       stem_width# = 1.4 reduced_slt#;
+       reduced_il# = staff_space# * reduction;
+       reduced_nht# = noteheight# * reduction;
+       holeheight# = 3 reduced_slt#;
+       beamheight# = 0.4(reduced_nht# - holeheight#);
+
+       rh_height# = 1.2reduced_il#;
+       rh_width# / rh_height# = 0.58; % tan(30)
+
+       define_pixels(beamheight);
+       define_pixels(stem_width);
+       define_pixels(rh_height);
+       define_pixels(rh_width);
+
+       pickup pencircle
+               xscaled beamheight
+               yscaled stem_width
+               rotated 45;
+
+       draw
+               exact_center + (-rh_width/2, 0) --
+               exact_center + (0, rh_height/2) --
+               exact_center + (+rh_width/2, 0) --
+               exact_center + (0, -rh_height/2) --
+               cycle;
+enddef;
+
+def draw_mensural_i_f_clef(expr exact_center, reduction) =
+       %
+       % inspired by Gaspar van Weerbeke, "Virgo Maria" (1502), in:
+       % MGG, volume 9, col. 653 ("Motette"), fig. 3.; also by
+       % Andr'e Campra, "Entr'ee des s'er'enades" (1710), in: MGG,
+       % volume 2, col. 1649 ("Contredanse"), fig. 2.
+       %
+       draw_brevis(exact_center, reduction, true, false);
+
+       save reduced_il, reduced_slt;
+       save stem_width, interline;
+
+       reduced_il# = staff_space# * reduction;
+       reduced_slt# = stafflinethickness# * reduction;
+       stem_width# = 1.4 reduced_slt#;
+       interline# = staff_space#;
+
+       define_pixels(reduced_il);
+       define_pixels(reduced_slt);
+       define_pixels(stem_width);
+       define_pixels(interline);
+
+       addto currentpicture also currentpicture
+               yscaled -1 shifted (0, 2*(ypart exact_center));
+       addto currentpicture also currentpicture 
+               xscaled -1 shifted (2x4l,0);
+
+       penpos6(stem_width, 0);
+       penpos7(stem_width, 0);
+       z6r = exact_center + (2x4l, 0);
+       z7r = z6r + (0, -4reduced_il);
+       fill z6l -- z7l -- z7r -- z6r -- cycle;
+
+       draw_diamond(exact_center +
+                    (1.6interline*reduction, interline/2), reduction);
+       %% some editions put a stem on top of the upper note head:
+       % penpos8(stem_width, 0);
+       % penpos9(stem_width, 0);
+       % z8l = exact_center + (1.6interline*reduction, interline*reduction);
+       % z9l = z8l + (0, 1.5interline*reduction);
+       % fill z8l -- z9l -- z9r -- z8r -- cycle;
+
+       draw_diamond(exact_center +
+                    (1.6interline*reduction, -interline/2), reduction);
+       penpos10(stem_width, 0);
+       penpos11(stem_width, 0);
+       z10r = exact_center + (1.6interline*reduction, -interline*reduction);
+       z11r = z10r + (0, -3.5interline*reduction);
+       fill z10l -- z11l -- z11r -- z10r -- cycle;
+
+       set_char_box(0, 3head_width#,
+                    3.5noteheight#*reduction, 1.5noteheight#*reduction);
+enddef;
+
+
+fet_beginchar("mensural f clef", "mensural1_f", "mens1fclef")
        if test = 1:
-               draw_staff(-1,3);
+               draw_staff(-1,3, 0.0);
        fi;
-       draw_gclef((1.7 interline#,0), 1.0);
+       draw_mensural_i_f_clef((0,0), 1.0);
 fet_endchar;
-fet_beginchar("G clef", "violin_change", "cviolinclef")
-       draw_gclef((1.3 interline#,0), .8);
+fet_beginchar("mensural f clef", "mensural1_f_change", "cmens1fclef")
+       draw_mensural_i_f_clef((0,0), .8);
 fet_endchar;
 
+
+def draw_mensural_ii_f_clef(expr exact_center, reduction) =
+       %
+       % inspired by Philippe le Duc, "Dite Signori" (1590), in: MGG,
+       % volume 3, col. 848 ("Duc"); also by John Dowland, "The First
+       % Booke of Songes" (1597), in: MGG, volume 3, col. 721
+       % ("Dowland"), fig. 3.
+
+       save reduced_slt, stem_width, reduced_nht, holeheight, beamheight;
+
+       reduced_slt# = stafflinethickness# * reduction;
+       stem_width# = 1.4 reduced_slt#;
+       reduced_nht# = noteheight# * reduction;
+       holeheight# = 3 reduced_slt#;
+       beamheight# = 0.4(reduced_nht# - holeheight#);
+
+       define_pixels(beamheight, stem_width, staff_space);
+
+       pickup pencircle
+               xscaled beamheight
+               yscaled stem_width
+               rotated 45;
+
+       draw
+               exact_center + (1.0 staff_space, 0.6 staff_space) --
+               exact_center + (1.25 staff_space, 0.4 staff_space);
+
+       draw
+               exact_center + (1.0 staff_space, -0.4 staff_space) --
+               exact_center + (1.25 staff_space, -0.6 staff_space);
+
+       draw    halfcircle scaled 1.2 staff_space rotated -90
+               shifted (-exact_center + (+0.1 staff_space, 0));
+
+       set_char_box(0, 3staff_space#, 3staff_space#, 0);
+enddef;
+
+fet_beginchar("mensural f clef", "mensural2_f", "mens2fclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_mensural_ii_f_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("mensural f clef", "mensural2_f_change", "cmens2fclef")
+       draw_mensural_ii_f_clef((0,0), .8);
+fet_endchar;
+
+
+def draw_mensural_g_clef(expr exact_center, reduction) =
+       %
+       % inspired by Francisco Guerrero, "Lib. 1.  Missarum" (1566),
+       % in: MGG, volume 3, col. 858 ("Ducis"); also by Stefano
+       % Fabri, "Quam speciosa veteranis" (1611), in: MGG, volume 3,
+       % col. 1698 ("Fabri"); also by Philippus Dulichius,
+       % "Fasciculus novus ..." (1598), in: MGG, volume 3, col. 919
+       % ("Dulichius"), fig. 1; also by Noe Faignient, "Ic sal de
+       % Heer myn God gebenedye" (1568), in: MGG, volume 3, col. 1735
+       % ("Faignient").
+       %
+       % Metafont code partially inspired by Schwabacher 'G' of yswab
+       % font.
+
+       save reduced_il, stem_width, height, width, apex_o, hair;
+
+       reduced_il#=staff_space#*reduction;
+
+       set_char_box(0.5reduced_il#, 1.5reduced_il#,
+                    1.5reduced_il#, 1.5reduced_il#);
+
+       stem_width# = 0.17 reduced_il#;
+       height# = 1.5 reduced_il#;
+       width# = 1.13 reduced_il#;
+       apex_o# = 0.02 reduced_il#;
+       hair# =  3 stafflinethickness#;
+       define_pixels(reduced_il, stem_width, height, width, apex_o, hair);
+
+       penpos1(2 stem_width, -142);
+       z1l = (0.715 width, 0.742 height);
+       penpos1'(hair, -90);
+       z1'l = z1r;
+       penpos2(1.179 stem_width, -142);
+       z2l = (width, 0.466 height);
+       penpos3(hair, 77);
+       z3 = (0.764 width, 0.067 height); 
+       z4 = (0.59 width, -apex_o);
+       penpos5(1.179 stem_width, 32);
+       z5l=(0, 0.457 height);
+       penpos6(hair, -56.5);
+       z7 = (x4 - 0.843 stem_width, height + apex_o);
+       z7 - z6l = whatever * dir33.5;
+       penpos8(1.286 stem_width, -130);
+       z8r = (0.715 width, 0.742 height) + (-apex_o, apex_o);
+       z6r - z8r = whatever * (z7 - z8l);
+       filldraw
+               z1'r{dir45} .. z2r{down} .. z3r{dir207} .. z5r{up} ..
+               z6r{z7-z6l} & z6r -- z8r -- z8l -- z7 --- z6l ...
+               z5l{down} .. z4{right} .. z3l{dir27} .. z2l{up} ..
+               z1l{1/3[z6l,z7]-z1l} & z1l -- z1r -- z1'r & cycle
+               shifted (-exact_center + (0, -0.75reduced_il));
+
+       penpos9(stem_width, 0);
+       x9r = x4; y9 = 0.3 height;
+
+       pickup pencircle
+               scaled stem_width
+               rotated 45;
+       draw    z9 -- (z9 + (0, -0.4reduced_il))
+               shifted (-exact_center + (0, -0.75reduced_il));
+
+       pickup pencircle
+               xscaled stem_width
+               yscaled hair
+               rotated 30;
+
+       draw halfcircle
+               scaled 0.5 reduced_il
+               rotated -90
+               shifted z8
+               shifted (0, 0.25reduced_il)
+               shifted (-exact_center + (0, -0.75reduced_il));
+
+       draw halfcircle
+               scaled 0.4 reduced_il
+               rotated 90
+               shifted (z8 + (0, 0.45 reduced_il))
+               shifted (0, 0.25reduced_il)
+               shifted (-exact_center + (0, -0.75reduced_il));
+enddef;
+
+
+fet_beginchar("mensural g clef", "mensural_g", "mensgclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_mensural_g_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("mensural g clef", "mensural_g_change", "cmensgclef")
+       draw_mensural_g_clef((0,0), .8);
+fet_endchar;
+
+
+
+%%%%%%%%
+%
+%
+%
+% Hufnagel
+%
+%
+%
+def draw_hufnagel_do_clef(expr exact_center, reduction) =
+       %
+       % inspired by Graduale of Friedrich Zollner (1442), in: MGG,
+       % volume 9, col. 1413 ("Neustift"), fig. 1.
+       %
+       save reduced_il;
+
+       reduced_il# = staff_space# * reduction;
+
+       define_pixels(reduced_il);
+
+       pickup pencircle
+               xscaled (0.60reduced_il)
+               yscaled (0.10reduced_il)
+               rotated 40;
+       save za, zb, zc, zd, ze, zf;
+       pair za, zb, zc, zd, ze, zf;
+
+       za = exact_center + (+0.30reduced_il, +.45reduced_il);
+       zb = exact_center + (+0.20reduced_il, +.45reduced_il);
+       zc = exact_center + (-0.10reduced_il, +.60reduced_il);
+       zd = exact_center + (-0.40reduced_il, +.45reduced_il);
+       ze = exact_center + (-0.40reduced_il, -.45reduced_il);
+       zf = exact_center + (-0.20reduced_il, -.55reduced_il);
+       draw za .. zb .. zc -- zd -- ze -- zf;
+
+       set_char_box(0.5reduced_il#, 0.5reduced_il#, 0, reduced_il#);
+enddef;
+
+
+fet_beginchar("Hufnagel do clef", "hufnagel_do", "hufnageldoclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_hufnagel_do_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Hufnagel do clef", "hufnagel_do_change", "chufnageldoclef")
+       draw_hufnagel_do_clef((1.3 staff_space#,0), .8);
+fet_endchar;
+
+
+def draw_hufnagel_fa_clef(expr exact_center, reduction) =
+       %
+       % inspired by Bamberger Manuscript (15th century), in:
+       % MGG, volume 2, table 59.
+       %
+       save reduced_il;
+
+       reduced_il# = staff_space# * reduction;
+
+       define_pixels(reduced_il);
+
+       pickup pencircle
+               xscaled (0.60reduced_il)
+               yscaled (0.10reduced_il)
+               rotated 40;
+       save za, zb, zc, zd, ze, zf;
+       pair za, zb, zc, zd, ze, zf;
+
+       za = exact_center + (+0.30reduced_il, +0.70reduced_il);
+       zb = exact_center + (+0.20reduced_il, +0.70reduced_il);
+       zc = exact_center + (-0.10reduced_il, +0.85reduced_il);
+       zd = exact_center + (-0.40reduced_il, +0.70reduced_il);
+       ze = exact_center + (-0.40reduced_il, -1.10reduced_il);
+       draw za .. zb .. zc -- zd -- ze;
+
+       save zg, zh, zi, zj;
+       pair zg, zh, zi, zj;
+
+       zg = exact_center + (+0.30reduced_il, -0.05reduced_il);
+       zh = exact_center + (+0.20reduced_il, -0.05reduced_il);
+       zi = exact_center + (-0.10reduced_il, +0.10reduced_il);
+       zj = exact_center + (-0.40reduced_il, -0.05reduced_il);
+       draw zg .. zh .. zi -- zj;
+
+       set_char_box(0.5reduced_il#, 0.5reduced_il#, 0, reduced_il#);
+enddef;
+
+
+fet_beginchar("Hufnagel fa clef", "hufnagel_fa", "hufnagelfaclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_hufnagel_fa_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Hufnagel fa clef", "hufnagel_fa_change", "chufnagelfaclef")
+       draw_hufnagel_fa_clef((0,0), .8);
+fet_endchar;
+
+
+def draw_hufnagel_do_fa_clef(expr exact_center, reduction) =
+       draw_hufnagel_do_clef(exact_center, reduction);
+       draw_hufnagel_fa_clef(exact_center + (0, -2staff_space), reduction);
+enddef;
+
+
+fet_beginchar("Hufnagel do/fa clef", "hufnagel_do_fa", "hufnageldofaclef")
+       if test = 1:
+               draw_staff(-1,3, 0.0);
+       fi;
+       draw_hufnagel_do_fa_clef((0,0), 1.0);
+fet_endchar;
+fet_beginchar("Hufnagel do/fa clef", "hufnagel_do_fa_change",
+             "chufnageldofaclef")
+       draw_hufnagel_do_fa_clef((0,0), .8);
+fet_endchar;
+
+
 fet_endgroup("clefs");