1 % feta-klef.mf -- implement Clefs -*-Fundamental-*-
3 % part of LilyPond's pretty-but-neat music font
5 % source file of the Feta (not the Font-En-Tja) music font
7 % (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>,
8 % Jan Nieuwenhuizen <janneke@gnu.org>,
9 % Juergen Reuter <reuter@ipd.uka.de>
12 fet_begingroup("clefs");
15 % [Ross] says that clefs take 1 staff_space space on the left and right
17 def set_horizontal_spacing =
18 save left_space ,right_space;
24 % [Wanske] says the bulbs should be positioned about 1/4 right of the
26 def draw_c_clef (expr reduction) =
27 save hair, norm, reduced_il, right_edge;
28 reduced_il#=staff_space#*reduction;
29 norm#:=2/3reduced_il#;
32 set_horizontal_spacing;
33 right_edge# = 15/4norm#+2hair#;
35 set_char_box (left_space#, right_edge# + right_space#,
36 2 reduced_il#, 2 reduced_il#);
37 define_pixels (hair,norm,reduced_il, right_edge);
39 draw_block ((0,-d), (3/4norm+1/2hair,h));
40 draw_block ((3/4norm+2hair,-d),
46 z1l=(xoff+norm+hair,h);
47 penpos2(norm-3/2hair,180);
50 z3=(((right_edge -xoff)/2)+xoff,2hair);
53 z4=(xoff+1/2norm+1/2hair,reduced_il-hair);
58 penpos6(norm-hair,90);
64 p = z5l..z4l{up}..z4r{down}..z3r{right}..tension t..z2r{up}
66 flare_path(z1l,180,90,hair,norm-1/2hair, -1)
67 %z1r{left}..z1l{right}
68 ..tension t..z2l{down}
69 ..z3l{left}..z6r..z5r{down};
70 pickup pencircle scaled 1pt#;
71 filldraw p..(reverse p yscaled -1)..cycle;
72 penlabels (1,2,3,4,5,6);
74 % ugh, should be bulb, not flare?
78 fet_beginchar ("C clef", "C", "altoclef")
80 draw_staff (-2,2, 0.0);
85 fet_beginchar ("C clef", "C_change", "caltoclef")
87 draw_staff (-2,2, 0.0);
93 % Inspired by Baerenreiter and Breitkopf
96 % FIXME: right vertical tangent seems to be lower than the F-line
97 % FIXME: bulb curve smoothly into "long curve" on the inside
100 % [Wanske] says that the extreme x point should be exactly between
101 % the dots, but her picture shows that the extreme is ~ 0.2 ss lower
103 def draw_bass_clef(expr exact_center, reduction) =
104 save reduced_il, left_tilt, left_thick, ball_to_right;
105 reduced_il# = staff_space# * reduction;
107 set_horizontal_spacing;
108 ball_to_right# = 2.1 reduced_il#;
109 set_char_box(left_space# +
110 - xpart exact_center,
112 xpart exact_center + ball_to_right# + 7/12 reduced_il#,
113 - ypart exact_center + 2.5 reduced_il#,
114 ypart exact_center +reduced_il#);
116 define_pixels(reduced_il, ball_to_right);
118 left_thick = .25 reduced_il;
120 x1r - x1l = left_thick;
121 z1l = (hround_pixels(xpart exact_center),
122 vround_pixels(ypart exact_center));
126 x3l - x1l = ball_to_right;
128 x3l - x3r = .48 reduced_il;
129 y3l = -0.05 staff_space;
130 x4 = x1l - stafflinethickness;
131 y4 = -2.2 reduced_il;
132 z5 = (x3l + 1/3 reduced_il, .5 reduced_il);
134 penpos1(whatever, left_tilt);
135 penpos2(1.2 stafflinethickness, -90);
136 penpos3(whatever, 185);
137 penpos4(stafflinethickness, 135);
139 draw_bulb(1, z1r, z1l, .45 reduced_il, 1.0);
142 fill z1r{up} .. z2r{right} .. tension 1.0 .. z3r{down} .. {curl 0}
143 simple_serif(z4r, z4l, 90) {curl 0}
144 .. z3l{up} .. tension 0.9 .. z2l{left}
145 .. z1l{dir (-90 + left_tilt)} -- cycle;
150 2 dot_diam = round reduction* (staff_space - stafflinethickness);
151 pickup pencircle scaled dot_diam;
153 drawdot z5 yscaled -1;
159 fet_beginchar("F clef ", "F", "bassclef")
161 draw_staff(-3,1, 0.0);
163 draw_bass_clef((.5 staff_space#, 0), 1.0);
166 fet_beginchar("F clef (reduced)", "F_change", "cbassclef")
167 draw_bass_clef((.4 staff_space#, 0),0.8);
173 % Inspired by Baerenreiter
175 % FIXME bulb should curve (see bass clef)
176 % FIXME start (inside) should be little thinner
180 % Beste lezers, kijk,
182 % Een bolletje hebben we bij toeval allemaal wel eens getekend, maar begint u
183 % toch eenvoudig. Eerst een eenvoudig kruis of herstellingsteken
184 % en via de dubbelslag naar een voorzichtig vlaggetje, en heb geduld!
185 % Ikzelf heb bijvoorbeeld over mijn eerste gave G-sleutel
186 % 35 kilobyte metafont, 12 patchlevels, 0 vriendinnen en 45 dagen gedaan
188 % -- vrij naar Van Kooten & De Bie
191 def draw_gclef (expr exact_center, reduction)=
192 save reduced_il, downstroke_dir, downstroke_angle, hair, center;
193 save breapth_factor, inner_thick_end, thinness, thickness, thinnib;
194 save inner_start_angle, thinness, thinpen;
195 reduced_il# = staff_space# * reduction;
196 define_pixels(reduced_il);
197 pair downstroke_dir, center;
199 center := (hround_pixels(xpart exact_center),
200 vround_pixels(ypart exact_center));
202 hair = .3 stafflinethickness;
203 thinness = 1.3 stafflinethickness;
204 downstroke_dir = (14, -75);
205 breapth_factor = 11/7;
206 inner_thick_end = 45;
207 inner_start_angle = downstroke_angle - 43;
208 thickness = .4 reduced_il - hair;
210 thinnib = thinness - hair;
212 set_horizontal_spacing;
216 -xpart exact_center + 1.0 * breapth_factor* reduced_il#,
218 xpart exact_center + .66 breapth_factor* reduced_il#,
219 -ypart exact_center + 3 * reduced_il#,
220 ypart exact_center + 5 * reduced_il#);
222 pickup pencircle scaled hair;
223 downstroke_angle = angle downstroke_dir;
225 z1 = center + whatever * dir (inner_start_angle);
226 x1 = xpart center -.28 reduced_il;
228 top z2r = center + (0,reduced_il + stafflinethickness/2);
230 x4 = xpart center - .1 reduced_il;
231 bot y4r = -(reduced_il + .5 stafflinethickness);
233 z3 = (z4 - center) rotated inner_thick_end + center;
235 z5r = (- breapth_factor, .37)* reduced_il + center;
236 penpos5(thickness, 135);
238 z6 = center + whatever * downstroke_dir;
239 y6 = ypart center + 2 reduced_il;
241 z7l - z6 = whatever *(z5- z6) ;
242 y7l = 3.5 reduced_il;
243 z8r = .4 [z9r, z7r] + 1.5 stafflinethickness * dir 52;
246 top y9l = 5 reduced_il;
249 y11 = -11/7 reduced_il;
251 y12 = ypart center - 18.5/7 reduced_il;
252 x12 = x11 - 5 /7 reduced_il;
254 z13 = z12 + .6 reduced_il*(-1,1);
256 (z10r - z10l) dotprod (unitvector downstroke_dir rotated 90) =
259 center - z10= whatever * downstroke_dir;
260 center - z11 = whatever * downstroke_dir;
261 center - z14 = .8 (center - z11);
262 penpos1(thinnib, inner_start_angle);
263 penpos2(thickness, 90);
264 penpos3(thinnib, -90 + inner_thick_end);
265 penpos4(thinnib, -90);
268 penpos7(thickness, 135);
269 penpos8(1.5 thinnib, - 70 + angle downstroke_dir);
270 penpos9(1.4 thickness, -80); % ugh
271 penpos10(whatever, downstroke_angle + 10);
272 penpos11(thinnib, downstroke_angle + 90);
273 penpos14(thinnib, downstroke_angle + 90);
274 penpos12(thinnib, -90);
275 penpos13(3 thinnib, 180);
277 filldraw z2l{right} .. z3l.. z4l{left} .. z5l{up} .. z7l{up}
281 {downstroke_dir}z10l --- z11l -- z11r --- z10r{- downstroke_dir}
283 .. z9r & z9r{dir (downstroke_angle+ 40)} % ugh
285 .. z7r{down} .. z5r{down} .. z4r{right}
286 .. z3r .. z2r{left} ..
289 .. tension 0.85 ..cycle;
291 filldraw simple_serif(z1r, z1l, 90) -- cycle;
293 filldraw z12r{left} .. z13r{up} -- z13l{down} .. z12l{right} .. cycle;
295 draw_bulb(-1, z13l, lft z13r, 6/14 reduced_il, 1.0);
297 pickup pencircle scaled (thinpen);
298 draw z10 --- z14 .. z11 .. tension 0.85 .. z12{left};
300 penlabels(range 1 thru 15);
304 fet_beginchar("G clef", "G", "trebleclef")
306 draw_staff(-1,3, 0.0);
308 draw_gclef((1.7 staff_space#,0), 1.0);
310 fet_beginchar("G clef", "G_change", "ctrebleclef")
311 draw_gclef((1.3 staff_space#,0), .8);
320 def draw_percussion_clef(expr reduction) =
322 reduced_il# = staff_space# * reduction;
323 define_pixels(reduced_il);
324 set_char_box(-.67reduced_il#,2.0reduced_il#,reduced_il#,reduced_il#);
325 razt := 0.45reduced_il;
326 draw_block((-b,-d),(-b+razt,h));
327 draw_block((w-razt,-d),(w,h));
330 fet_beginchar("percussion clef", "percussion", "percussionclef")
331 draw_percussion_clef(1.0);
334 fet_beginchar("percussion clef (reduced)", "percussion_change", "cpercussionclef")
335 draw_percussion_clef(.8);
338 def draw_tab_T(expr pos, siz, slant) =
342 vx=(xpart siz) * dir 0;
343 vy=(ypart siz) * dir 90;
345 penpos1(.75penh, 100);
346 z1=z2+(1/6*vx-.15*vy);
359 penpos11(.75[penh,penw],170);
362 z12l=(xpart .5[z13,z11],ypart (pos-.025*siz));
363 penpos13(.75penh,60);
366 % penlabels (1,2,3,4,5,10,11,12,13);
368 soft_penstroke (z1e..tension 1.1
370 ..z3e{right}..tension 1.5
373 ) slanted slant shifted (slant*-ypart pos,0);
375 soft_penstroke (z10e..tension 1.5
378 ..z13e{(z13r-z13l) rotated 90}
379 ) slanted slant shifted (slant*-ypart pos,0);
383 def draw_tab_A(expr pos, siz, slant) =
387 vx=(xpart siz) * dir 0;
388 vy=(ypart siz) * dir 90;
390 penpos1(.75penh,-110);
393 z2r=(.5[x1,x3],ypart pos);
394 penpos3(.25[penh,penw],-30);
395 z3=(.45[x2,x4],.15[y2,y4]);
396 penpos4(1[penh,penw],0);
399 penpos5(1[penh,penw],-180);
401 penpos6(.2[penh,penw],-150);
402 z6l=(.8[x5l,x7l],.9[y5l,y7l]);
404 z7r=(.5[x6,x8],ypart pos);
405 penpos8(.75penh,-70);
406 z8r=(xpart(pos+siz),y7r+.075ypart(siz));
410 penpos11(.9penh,-90);
411 z11=.4[z10,z6]-0.05vy;
412 penpos12(.75penh,-75);
413 z12=.3[z11,z6]+0.02vy;
415 % penlabels(1,2,3,4,5,6,7,8,10,11,12);
417 soft_penstroke (z1e {(z1r-z1l) rotated 90}
421 ) slanted slant shifted (slant*-ypart pos,0);
426 ..z8e {(z8r-z8l) rotated 90}
427 ) slanted slant shifted (slant*-ypart pos,0);
432 ) slanted slant shifted (slant*-ypart pos,0);
437 def draw_tab_B(expr pos, siz, slant) =
441 vx=(xpart siz) * dir 0;
442 vy=(ypart siz) * dir 90;
444 penpos1(.75penh, 100);
445 z1=z2+(.15*vx-.1*vy);
449 z3l = pos+.4vx+1.05vy;
450 penpos4(.8[penh,penw],-180);
451 z4=(xpart(pos+.75siz),.5[y3,y5]);
453 z5=(.5[x10,x4],ypart (pos+.55siz));
458 z7l=(xpart(pos+siz),.5[y6,y8]);
460 z8=.5[z12l,z11l]+.15vx-.05vy;
462 penpos10(.75[penh,penw],170);
463 z10=pos+.375vx+.95vy;
464 penpos11(.8[penh,penw],150);
467 z12l=(xpart .5[z13,z11],ypart pos);
468 penpos13(.75penh,60);
471 % penlabels (1,2,3,4,5,6,7,8,10,11,12,13);
473 soft_penstroke (z1e..tension 1.1
478 ) slanted slant shifted (slant*-ypart pos,0);
480 soft_penstroke (z6e{right}
482 ..z8e{(z8r-z8l) rotated 90}
483 ) slanted slant shifted (slant*-ypart pos,0);
485 soft_penstroke (z10e.. tension 1.5
488 ..z13e{(z13r-z13l) rotated 90}
489 ) slanted slant shifted (slant*-ypart pos,0);
493 def draw_tab_clef(expr reduction) =
494 save reduced_il,vx,vy,letterheight,penw,penh;
495 reduced_il# = staff_space# * reduction;
496 letterheight# = 1.8*reduced_il#;
497 define_pixels(reduced_il,letterheight);
498 set_char_box(-.2*reduced_il#,2.8*reduced_il#,1.6*letterheight#,1.6*letterheight#);
500 %draw_staff (-3,2, 0.5);
502 penw = .45reduced_il;
505 draw_tab_T((-b+.15reduced_il,h-letterheight),
506 (2.1*reduced_il,letterheight),0.2);
507 draw_tab_A((-b-.05reduced_il,-.5letterheight +.15reduced_il),
508 (2.2*reduced_il,letterheight),0.4);
509 draw_tab_B((-b+.025reduced_il,-d),
510 (2.1*reduced_il,letterheight),0.25);
513 fet_beginchar("tab clef", "tab", "tabclef")
517 fet_beginchar("tab clef (reduced)", "tab_change", "ctabclef")
521 fet_endgroup("clefs");