+%
+% feta-klef.mf -- implement Clefs
+%
+% source file of the Feta (Font-En-Tja) music font
+%
+% (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>,
+% Jan Nieuwenhuizen <janneke@gnu.org>
-fet_begingroup("klef");
-def draw_bass_clef(expr reduction, center) =
- save thinness, left_shoot, reduced_il;
- save left_fat, right_fat, dot_size, dot_sep;
- save hip_factor;
- left_shoot = 0.3;
- left_fat = .3;
- right_fat = .5;
- dot_size = .4;
- dot_sep = 1.2;
- hip_factor = 0.95;
- thinness = stafflinethickness;
-
- reduced_il# = interline# * reduction;
- define_pixels(reduced_il);
- set_char_box(left_fat * reduced_il#,
- (1 + hip_factor + right_fat/2)* reduced_il# +
- (dot_sep+ 1) * dot_size *reduced_il#
- , 2.5 reduced_il#, 1.0 reduced_il#)
-
- z2 - z1 = (1.1 reduced_il, reduced_il);
- z3 = (x2 + hip_factor* reduced_il, y1);
- z4 - z1 = (- left_shoot * reduced_il, -2.5 reduced_il);
-
- z1extreme = z1l - ( thinness/2, 0);
- penpos1(left_fat* reduced_il , 0);
- z1r = (center, 0);
- z5 = (x3l + dot_sep * dot_size * interline, .5 interline);
+fet_begingroup("clefs");
+
+%
+% [Ross] says that clefs take 1 interline space on the left and right
+%
+def set_horizontal_spacing =
+ save left_space ,right_space;
+ left_space# = reduced_il#;
+ right_space# = reduced_il#;
+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;
+ norm#:=2/3reduced_il#;
+ hair#:=1/6norm#;
+
+ set_horizontal_spacing;
+ right_edge# = 15/4norm#+2hair#;
+
+ set_char_box (left_space#, right_edge# + right_space#,
+ 2 reduced_il#, 2 reduced_il#);
+ define_pixels (hair,norm,reduced_il, right_edge);
+
+ draw_block ((0,-d), (3/4norm+1/2hair,h));
+ draw_block ((3/4norm+2hair,-d),
+ (3/4norm+7/2hair,h));
+ save xoff;
+ xoff=3/4norm+7/2hair;
+ penpos1(hair,-90);
+ z1l=(xoff+norm+hair,h);
+ penpos2(norm-3/2hair,180);
+ z2l=(right_edge,h/2);
+ penpos3(hair,90);
+ z3=(((right_edge -xoff)/2)+xoff,2hair);
+
+ penpos4(hair,0);
+ z4=(xoff+1/2norm+1/2hair,reduced_il-hair);
- penpos3(right_fat * reduced_il, 180);
+ penpos5(4hair,0);
+ z5=(xoff+5/4hair,0);
- penlabels(1,3);
- labels(2,4);
+ penpos6(norm-hair,90);
+ z6=(xoff+3/4norm,0);
+ penpos7(hair,-90);
+ z7r=(x1,-d);
- pickup pencircle scaled thinness;
- filldraw z1r{up} .. z2{right} .. z3r{down} .. {curl 0} z4 {curl 0}
- .. z3l{up} .. z2{left} .. z1l{down} -- cycle;
+ save t; t=0.833;
+ save p; path p;
+ p = z5l..z4l{up}..z4r{down}..z3r{right}..tension t..z2r{up}
+ ..tension t..z1r{left}..z1l{right}..tension t..z2l{down}
+ ..z3l{left}..z6r..z5r{down};
+ pickup pencircle scaled 1pt#;
+ filldraw p..(reverse p yscaled -1)..cycle;
+ penlabels (1,2,3,4,5,6);
- draw_bulb(1, z1r, z1extreme, 1.2 , 1.2);
+ % ugh, should be bulb, not flare?
+ draw_flare(z1l,180,90,hair,norm-1/2hair);
+ draw_flare(z7r,180,-90,hair,norm-1/2hair);
+ enddef;
- pickup pencircle scaled (dot_size * interline);
- draw z5;
- draw z5 yscaled -1;
-
-enddef;
+fet_beginchar ("C clef", "alto", "altoclef")
+ if test = 1:
+ draw_staff (-2,2);
+ fi;
+ draw_c_clef (1.0);
+fet_endchar;
+fet_beginchar ("C clef", "alto_change", "caltoclef")
+ if test = 1:
+ draw_staff (-2,2);
+ fi;
+ draw_c_clef (.8);
+fet_endchar;
%
-% Inspired by Baerenreiter, Auf dem Strom
+% Inspired by Baerenreiter and Breitkopf
%
% FIXME: dims
% FIXME: right vertical tangent seems to be lower than the F-line
% [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 reduction) =
- save reduced_il, left_tilt, left_thick;
+def draw_bass_klef(expr exact_center, reduction) =
+ save reduced_il, left_tilt, left_thick, ball_to_right;
reduced_il# = interline# * reduction;
- left_tilt = 10;
+
+ 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#,
+ - ypart exact_center + 2.5 reduced_il#,
+ ypart exact_center +reduced_il#);
- define_pixels(reduced_il);
+ define_pixels(reduced_il, ball_to_right);
+ left_tilt = 5;
left_thick = .25 reduced_il;
-
- set_char_box(0, 2.7 reduced_il#, 2.5 reduced_il#, reduced_il#);
+
x1r - x1l = left_thick;
- x1l = 0;
- y1l = 0;
+ z1l = (hround_pixels(xpart exact_center),
+ vround_pixels(ypart exact_center));
y2 = reduced_il;
- x3r = x1l + 12/7 reduced_il;
+ x3l - x1l = ball_to_right;
x2 = .5 [x1,x3];
x3l - x3r = .48 reduced_il;
y3l = -0.05 interline;
draw_bulb(1, z1r, z1l, .45 reduced_il, 1.0);
- fill z1r{up} .. z2r{right} .. tension .9 .. z3r{down} .. {curl 0}
+ fill z1r{up} .. z2r{right} .. tension 1.0 .. z3r{down} .. {curl 0}
simple_serif(z4r, z4l, 90) {curl 0}
- .. z3l{up} .. tension .9 .. z2l{left}
+ .. z3l{up} .. tension 0.9 .. z2l{left}
.. z1l{dir (-90 + left_tilt)} -- cycle;
labels(2,4);
penlabels(1,2,3,4);
- pickup pencircle scaled (1/3 reduced_il);
+ save dot_diam;
+ 2 dot_diam = reduction* (interline - stafflinethickness);
+ pickup pencircle scaled dot_diam;
draw z5;
draw z5 yscaled -1;
enddef;
+
+
fet_beginchar("F clef ", "bass", "bassclef")
- draw_bass_klef(1.0);
+ if test = 1:
+ draw_staff(-3,1);
+ fi;
+ draw_bass_klef((.5 interline#, 0), 1.0);
fet_endchar;
fet_beginchar("F clef (reduced)", "bass_change", "cbassclef")
- draw_bass_klef(0.8);
+ draw_bass_klef((.4 interline#, 0),0.8);
fet_endchar;
-fet_endgroup("klef");
+
+%
+% Inspired by Baerenreiter
+%
+% FIXME bulb should curve (see bass clef)
+% FIXME start (inside) should be little thinner
+% FIXME parametrise.
+%
+
+% Beste lezers, kijk,
+%
+% Een bolletje hebben we bij toeval allemaal wel eens getekend, maar begint u
+% toch eenvoudig. Eerst een eenvoudig kruis of herstellingsteken
+% en via de dubbelslag naar een voorzichtig vlaggetje, en heb geduld!
+% Ikzelf heb bijvoorbeeld over mijn eerste gave G-sleutel
+% 35 kilobyte metafont, 12 patchlevels, 0 vriendinnen en 45 dagen gedaan
+%
+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;
+ define_pixels(reduced_il);
+ pair downstroke_dir, center;
+
+ center := (hround_pixels(xpart exact_center),
+ vround_pixels(ypart exact_center));
+
+ hair = .3 stafflinethickness;
+ thinness = 1.3 stafflinethickness;
+ downstroke_dir = (14, -75);
+ breapth_factor = 11/7;
+ inner_thick_end = 45;
+ inner_start_angle = downstroke_angle - 43;
+ thickness = .4 reduced_il - hair;
+
+ thinnib = thinness - hair;
+ thinpen = thinness;
+ set_horizontal_spacing;
+
+ set_char_box(
+ left_space# +
+ -xpart exact_center + 1.0 * breapth_factor* reduced_il#,
+ right_space# +
+ xpart exact_center + .66 breapth_factor* reduced_il#,
+ -ypart exact_center + 3 * reduced_il#,
+ ypart exact_center + 5 * reduced_il#);
+
+ pickup pencircle scaled hair;
+ downstroke_angle = angle downstroke_dir;
+
+ z1 = center + whatever * dir (inner_start_angle);
+ x1 = xpart center -.28 reduced_il;
+
+ top z2r = center + (0,reduced_il + stafflinethickness/2);
+
+ x4 = xpart center - .1 reduced_il;
+ bot y4r = -(reduced_il + .5 stafflinethickness);
+
+ z3 = (z4 - center) rotated inner_thick_end + center;
+
+ z5r = (- breapth_factor, .37)* reduced_il + center;
+ penpos5(thickness, 135);
+
+ z6 = center + whatever * downstroke_dir;
+ y6 = ypart center + 2 reduced_il;
+
+ z7l - z6 = whatever *(z5- z6) ;
+ y7l = 3.5 reduced_il;
+ z8r = .4 [z9r, z7r] + 1.5 stafflinethickness * dir 52;
+
+ x9 = .7 [x10, x7r];
+ top y9l = 5 reduced_il;
+
+ y10 = 3. reduced_il;
+ y11 = -11/7 reduced_il;
+
+ y12 = ypart center - 18.5/7 reduced_il;
+ x12 = x11 - 5 /7 reduced_il;
+
+ z13 = z12 + .6 reduced_il*(-1,1);
+
+ (z10r - z10l) dotprod (unitvector downstroke_dir rotated 90) =
+ thinnib;
+
+ center - z10= whatever * downstroke_dir;
+ center - z11 = whatever * downstroke_dir;
+ center - z14 = .8 (center - z11);
+ penpos1(thinnib, inner_start_angle);
+ penpos2(thickness, 90);
+ penpos3(thinnib, -90 + inner_thick_end);
+ penpos4(thinnib, -90);
+
+
+ penpos7(thickness, 135);
+ penpos8(1.5 thinnib, - 70 + angle downstroke_dir);
+ penpos9(1.4 thickness, -80); % ugh
+ penpos10(whatever, downstroke_angle + 10);
+ penpos11(thinnib, downstroke_angle + 90);
+ penpos14(thinnib, downstroke_angle + 90);
+ penpos12(thinnib, -90);
+ penpos13(3 thinnib, 180);
+
+ filldraw z2l{right} .. z3l.. z4l{left} .. z5l{up} .. z7l{up}
+ %.. z8l
+ .. tension 1.2
+ .. z9l & z9l ..
+ {downstroke_dir}z10l --- z11l -- z11r --- z10r{- downstroke_dir}
+ .. tension .8
+ .. z9r & z9r{dir (downstroke_angle+ 40)} % ugh
+ %.. z8r
+ .. z7r{down} .. z5r{down} .. z4r{right}
+ .. z3r .. z2r{left} ..
+ tension .95 ..
+ z1r -- z1l
+ .. tension 0.85 ..cycle;
+
+ filldraw simple_serif(z1r, z1l, 90) -- cycle;
+
+ filldraw z12r{left} .. z13r{up} -- z13l{down} .. z12l{right} .. cycle;
+
+ draw_bulb(-1, z13l, lft z13r, 6/14 reduced_il, 1.0);
+
+ pickup pencircle scaled (thinpen);
+ draw z10 --- z14 .. z11 .. tension 0.85 .. z12{left};
+
+ penlabels(range 1 thru 15);
+enddef;
+
+
+fet_beginchar("G clef", "violin", "violinclef")
+ if test = 1:
+ draw_staff(-1,3);
+ fi;
+ draw_gclef((1.7 interline#,0), 1.0);
+fet_endchar;
+fet_beginchar("G clef", "violin_change", "cviolinclef")
+ draw_gclef((1.3 interline#,0), .8);
+fet_endchar;
+
+fet_endgroup("clefs");
projects / lilypond.git / blobdiff