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 % this is now handled in the lilypond spacing engine.
20 def set_horizontal_spacing =
21 save left_space ,right_space;
27 % [Wanske] says the bulbs should be positioned about 1/4 right of the
31 % TODO: the hair-curve at z6r looks a little awkward.
32 def draw_c_clef (expr reduction) =
33 save hair, norm, reduced_ss, right_edge;
34 reduced_ss#=staff_space#*reduction;
35 norm#:=2/3reduced_ss#;
38 set_horizontal_spacing;
39 right_edge# = 15/4norm#+2hair#;
41 set_char_box (left_space#, right_edge# + right_space#,
42 2 reduced_ss#, 2 reduced_ss#);
43 define_pixels (hair,norm,reduced_ss, right_edge);
45 draw_block ((0,-d), (3/4norm+1/2hair,h));
46 draw_block ((3/4norm+2hair,-d),
52 z1l=(xoff+norm+hair,h);
53 penpos2(norm-3/2hair,180);
56 z3=(((right_edge -xoff)/2)+xoff,2hair);
59 z4=(xoff+1/2norm+1/2hair,reduced_ss-hair);
64 penpos6(norm-hair,90);
70 p = z5l..z4l{up}..z4r{down}..z3r{right}..tension t..z2r{up}
72 flare_path(z1l,180,90,hair,norm-1/2hair, -1)
73 ..tension t..z2l{down}
74 ..z3l{left}..z6r..z5r{down};
75 pickup pencircle scaled 1pt#;
76 filldraw p..(reverse p yscaled -1)..cycle;
77 penlabels (1,2,3,4,5,6);
79 % ugh, should be bulb, not flare?
83 fet_beginchar ("C clef", "C", "altoclef")
85 draw_staff (-2,2, 0.0);
90 fet_beginchar ("C clef", "C_change", "caltoclef")
92 draw_staff (-2,2, 0.0);
100 % Insert a brushed piece of the path, and draw a bulb separately
102 % The bulb is circular form. Neat merging of the bulb and brushed path
103 % is done by playing with tension.
107 def new_bulb (expr outer_tangent_point,
108 big_radius, bulb_radius, flare, direction, turning_dir) =
118 center = outer_tangent_point +big_radius* dir(0) + big_radius* dir(-turning_dir * 90)
119 - bulb_radius * dir (- turning_dir * 90);
121 z1 = center + bulb_radius * dir (turning_dir * 180);
122 z2 = center + bulb_radius * dir (turning_dir * 270);
124 z9 = center + bulb_radius * dir (0);
125 z10 = center + bulb_radius * dir (turning_dir *90);
126 z3 = outer_tangent_point + flare * dir (0);
130 % tension is needed to open up the space between return path and the
134 z9 .. z10 .. tension 1.1 .. z1 .. z2 .. cycle;
136 p:= outer_tangent_point{dir (-turning_dir* 90)}
138 .. {dir (turning_dir * 90)}z9 -- z3
152 % There is some variation is shape of bass clefs. Important points
154 % * the size of the swoosh tip: in some clefs, it almost reaches the
155 % bottom staff line, in some it crosses the 2nd line from the bottom
156 % with a small overshoot.
158 % The most popular design is where the X part of the tip is aligned
159 % left bulb boundary, and the Y part ends on the 2nd staffline exactly.
160 % This is what we do.
162 % * The size of the bulb. The diameter of the bulb is the width of the
165 % * The y-alignment of the bulb. The center of the bulb can be on or slightly
166 % above the staff line.
168 % * The position of the dots. They can be symmetrical around the
169 % staffline, centered in the staff space. The Baerenreiter SCS has the
170 % bottom dot raised by approx. 0.1 ss.
172 % * uncarefully set music may have overshoots at the top. We have none.
174 % * It is not exactly clear where the vertical tangent at the right
175 % of the swoosh should be.
179 def draw_bass_clef(expr exact_center, reduction) =
180 save reduced_ss, left_tilt, left_thick, swoosh_width;
181 save right_thickness, tip_protude;
184 reduced_ss# = staff_space# * reduction;
187 2.2 dot_diam = round reduction* (staff_space - stafflinethickness);
188 right_thickness = 0.48;
190 swoosh_width# = 2.1 reduced_ss#;
191 % tip_protude := (-stafflinethickness, -.2 staff_space);
192 tip_protude := (0, 0);
193 set_horizontal_spacing;
194 bulb_y_offset := 0.15 staff_space;
195 overshoot_top := 0.0;
198 set_char_box(left_space# +
199 - xpart exact_center,
201 xpart exact_center + swoosh_width# + 7/12 reduced_ss#,
202 - ypart exact_center + 2.5 reduced_ss#,
203 ypart exact_center +reduced_ss#);
205 define_pixels(swoosh_width);
206 define_whole_pixels(reduced_ss);
215 y2l := vround_pixels (reduced_ss# + 0.5 stafflinethickness#);
216 y2l - y2r = (1.0 + overshoot_top) * stafflinethickness;
219 x3l - x1 = swoosh_width;
220 x3l - x3r = right_thickness * reduced_ss;
222 % try to correct: the top dot seems farther away if y3l = 0.
223 y3l = 0.05 staff_space;
225 z4 = - (0, 2.0 reduced_ss) + tip_protude;
227 z5 = (x3l + 1/3 reduced_ss, .5 reduced_ss);
229 penpos3(whatever, 185);
230 penpos4(stafflinethickness, 135);
232 pickup pencircle scaled 1;
235 new_bulb (z1, 0.45 reduced_ss, 0.4 reduced_ss, 2.5 stafflinethickness, 1, 1)
238 .. z2r{right} .. tension 1.0 .. z3r{down} .. {curl 0}
239 simple_serif(z4r, z4l, 90) {curl 0}
240 .. z3l{up} .. tension 0.9 .. z2l{left}
244 labels(range 1 thru 12);
248 pickup pencircle scaled dot_diam;
250 drawdot z5 yscaled -1;
256 fet_beginchar("F clef ", "F", "bassclef")
258 draw_staff(-3,1, 0.0);
260 draw_bass_clef((0, 0), 1.0);
263 fet_beginchar("F clef (reduced)", "F_change", "cbassclef")
264 draw_bass_clef((0, 0),0.8);
270 % Inspired by Baerenreiter
273 % Beste lezers, kijk,
275 % Een bolletje hebben we bij toeval allemaal wel eens getekend, maar begint u
276 % toch eenvoudig. Eerst een eenvoudig kruis of herstellingsteken
277 % en via de dubbelslag naar een voorzichtig vlaggetje, en heb geduld!
278 % Ikzelf heb bijvoorbeeld over mijn eerste gave G-sleutel
279 % 35 kilobyte metafont, 12 patchlevels, 0 vriendinnen en 45 dagen gedaan
281 % -- vrij naar Van Kooten & De Bie
283 def debugfill = fill enddef;
284 def draw_gclef (expr exact_center, reduction)=
285 save reduced_ss, downstroke_dir, downstroke_angle, center;
286 save breapth_factor, inner_thick_end, thinness, thickness, thinnib;
287 save inner_start_angle, thinness;
288 reduced_ss# = staff_space# * reduction;
289 define_pixels(reduced_ss);
290 pair downstroke_dir, center;
292 center := (hround_pixels(xpart exact_center),
293 vround_pixels(ypart exact_center));
295 thinness = 1.4 stafflinethickness;
296 downstroke_dir = unitvector (14, -75);
297 downstroke_angle = angle downstroke_dir;
300 breapth_factor = 21.0 /14;
301 inner_thick_end = 45;
302 inner_start_angle = downstroke_angle - 43;
303 thickness = .4 reduced_ss;
307 set_horizontal_spacing;
311 -xpart exact_center + 1.0 * breapth_factor* reduced_ss#,
313 xpart exact_center + .66 breapth_factor* reduced_ss#,
314 -ypart exact_center + 2.6 * reduced_ss#,
315 ypart exact_center + 5 * reduced_ss#);
318 save upward_swoosh_angle;
319 upward_swoosh_angle =130 ;
320 penpos7(thickness, upward_swoosh_angle);
321 penpos5(thickness, upward_swoosh_angle);
324 z1 = center + whatever * dir (inner_start_angle);
325 x1 = xpart center -.28 reduced_ss;
327 top z2r = center + (0,reduced_ss + stafflinethickness/2);
329 x4 = xpart center - .1 reduced_ss;
330 bot y4r = -(reduced_ss + .5 stafflinethickness);
332 z3 = (z4 - center) rotated inner_thick_end + center;
333 x5r = - breapth_factor* reduced_ss + xpart center;
334 y5r = .37 reduced_ss + ypart center;
336 z6 = center + whatever * downstroke_dir;
337 y6 = ypart center + 2 reduced_ss;
339 z7l - z6 = whatever * (z5 - z6) ;
340 y7l = 3.5 reduced_ss;
343 top y9l = 5 reduced_ss;
345 y11 = ypart center - 47/28 reduced_ss;
346 y12 = ypart center - 71/28 reduced_ss;
348 x11 - x13r = 1.5 reduced_ss + 0.5 thinnib;
349 x12r = xpart (.45 [z13r , z11] + .75 reduced_ss * downstroke_dir) ;
351 % z10= center + whatever * dir (downstroke_angle - 1.5 );
352 x10 = x6 - 2 thinnib;
353 y10 = ypart center + 3.5 reduced_ss;
354 y10l - y10r = 1.2 thickness;
356 .7 thinnib* dir (downstroke_angle + 90) + whatever * downstroke_dir;
358 z10 = .5 [z10l, z10r];
360 z11 = center + whatever * downstroke_dir + ( .05 reduced_ss, 0);
362 penpos1(thinnib, inner_start_angle);
363 penpos2(thickness, 90);
364 penpos3(thinnib, -90 + inner_thick_end);
365 penpos4(thinnib, -90);
368 penpos9(1.45 thickness, -70);
371 lipje= .5 [z9l, z9r] + .25 ((z9r- z9l) rotated -90);
372 penpos13(2 thinnib, 180);
374 pickup pencircle scaled 1;
385 --z9r % {dir (downstroke_angle+ 0)}
388 .. z7r{down} .. z5r{down} .. z4r{right}
389 .. z3r .. z2r{left} ..
391 z1r -- simple_serif(z1r, z1l, 80) -- z1l
392 .. tension 0.85 ..cycle;
394 save p, staffline_time, staff_line_path, down_staff_line_intersection;
395 path p, staff_line_path;
396 pair down_staff_line_intersection;
397 p := z4{left} .. z5{up} .. z7{up} ;
399 staff_line_path := (-reduced_ss, 2 reduced_ss) .. (2 reduced_ss,2 reduced_ss);
404 % we don't do this with a path: variations in thickness
405 % are very easily made and look very ugh.
406 pickup pencircle scaled thinnib;
411 bot_angle = -180; % downstroke_angle- 87;
413 penpos12(thinnib, bot_angle + 90);
419 .. z12{dir(bot_angle)}
422 save down_intersection_t;
423 down_intersection_t := xpart (p intersectiontimes staff_line_path) ;
424 down_staff_line_intersection = point down_intersection_t of p;
425 z14 = down_staff_line_intersection;
426 penpos14(thinnib, angle (direction down_intersection_t of p) + 90);
429 start_angle=angle (direction xpart (p intersectiontimes z11) of p);
430 penpos11 (thinnib, start_angle+ 90);
434 loop_end_dir = direction (xpart (p intersectiontimes staff_line_path)) of p;
437 penpos6(thinnib, angle (loop_end_dir) + 90);
438 pickup pencircle scaled 1;
442 .. z14l{loop_end_dir} -- z14r{-loop_end_dir}
448 pickup pencircle scaled 1;
451 z11r{dir(start_angle)}
452 .. z12r{dir(bot_angle)}
454 ..new_bulb (z13r, 0.45 reduced_ss, 0.38 reduced_ss, 3 stafflinethickness, 1, -1) {down}
457 .. z12l{-dir (bot_angle)}
459 .. z11l{-dir(start_angle)}
464 penlabels(range 1 thru 16);
468 fet_beginchar("G clef", "G", "trebleclef")
470 draw_staff(-1,3, 0.0);
472 draw_gclef((1.7 staff_space#,0), 1.0);
474 fet_beginchar("G clef", "G_change", "ctrebleclef")
475 draw_gclef((1.3 staff_space#,0), .8);
484 def draw_percussion_clef(expr reduction) =
486 reduced_ss# = staff_space# * reduction;
487 define_pixels(reduced_ss);
488 set_char_box(-.67reduced_ss#,2.0reduced_ss#,reduced_ss#,reduced_ss#);
489 razt := 0.45reduced_ss;
490 draw_block((-b,-d),(-b+razt,h));
491 draw_block((w-razt,-d),(w,h));
494 fet_beginchar("percussion clef", "percussion", "percussionclef")
495 draw_percussion_clef(1.0);
498 fet_beginchar("percussion clef (reduced)", "percussion_change", "cpercussionclef")
499 draw_percussion_clef(.8);
502 def draw_tab_T(expr pos, siz, slant) =
506 vx=(xpart siz) * dir 0;
507 vy=(ypart siz) * dir 90;
509 penpos1(.75penh, 100);
510 z1=z2+(1/6*vx-.15*vy);
523 penpos11(.75[penh,penw],170);
526 z12l=(xpart .5[z13,z11],ypart (pos-.025*siz));
527 penpos13(.75penh,60);
530 % penlabels (1,2,3,4,5,10,11,12,13);
532 soft_penstroke (z1e..tension 1.1
534 ..z3e{right}..tension 1.5
537 ) slanted slant shifted (slant*-ypart pos,0);
539 soft_penstroke (z10e..tension 1.5
542 ..z13e{(z13r-z13l) rotated 90}
543 ) slanted slant shifted (slant*-ypart pos,0);
547 def draw_tab_A(expr pos, siz, slant) =
551 vx=(xpart siz) * dir 0;
552 vy=(ypart siz) * dir 90;
554 penpos1(.75penh,-110);
557 z2r=(.5[x1,x3],ypart pos);
558 penpos3(.25[penh,penw],-30);
559 z3=(.45[x2,x4],.15[y2,y4]);
560 penpos4(1[penh,penw],0);
563 penpos5(1[penh,penw],-180);
565 penpos6(.2[penh,penw],-150);
566 z6l=(.8[x5l,x7l],.9[y5l,y7l]);
568 z7r=(.5[x6,x8],ypart pos);
569 penpos8(.75penh,-70);
570 z8r=(xpart(pos+siz),y7r+.075ypart(siz));
574 penpos11(.9penh,-90);
575 z11=.4[z10,z6]-0.05vy;
576 penpos12(.75penh,-75);
577 z12=.3[z11,z6]+0.02vy;
579 % penlabels(1,2,3,4,5,6,7,8,10,11,12);
581 soft_penstroke (z1e {(z1r-z1l) rotated 90}
585 ) slanted slant shifted (slant*-ypart pos,0);
590 ..z8e {(z8r-z8l) rotated 90}
591 ) slanted slant shifted (slant*-ypart pos,0);
596 ) slanted slant shifted (slant*-ypart pos,0);
601 def draw_tab_B(expr pos, siz, slant) =
605 vx=(xpart siz) * dir 0;
606 vy=(ypart siz) * dir 90;
608 penpos1(.75penh, 100);
609 z1=z2+(.15*vx-.1*vy);
613 z3l = pos+.4vx+1.05vy;
614 penpos4(.8[penh,penw],-180);
615 z4=(xpart(pos+.75siz),.5[y3,y5]);
617 z5=(.5[x10,x4],ypart (pos+.55siz));
622 z7l=(xpart(pos+siz),.5[y6,y8]);
624 z8=.5[z12l,z11l]+.15vx-.05vy;
626 penpos10(.75[penh,penw],170);
627 z10=pos+.375vx+.95vy;
628 penpos11(.8[penh,penw],150);
631 z12l=(xpart .5[z13,z11],ypart pos);
632 penpos13(.75penh,60);
635 % penlabels (1,2,3,4,5,6,7,8,10,11,12,13);
637 soft_penstroke (z1e..tension 1.1
642 ) slanted slant shifted (slant*-ypart pos,0);
644 soft_penstroke (z6e{right}
646 ..z8e{(z8r-z8l) rotated 90}
647 ) slanted slant shifted (slant*-ypart pos,0);
649 soft_penstroke (z10e.. tension 1.5
652 ..z13e{(z13r-z13l) rotated 90}
653 ) slanted slant shifted (slant*-ypart pos,0);
657 def draw_tab_clef(expr reduction) =
658 save reduced_ss,vx,vy,letterheight,penw,penh;
659 reduced_ss# = staff_space# * reduction;
660 letterheight# = 1.8*reduced_ss#;
661 define_pixels(reduced_ss,letterheight);
662 set_char_box(-.2*reduced_ss#,2.8*reduced_ss#,1.6*letterheight#,1.6*letterheight#);
664 %draw_staff (-3,2, 0.5);
666 penw = .45reduced_ss;
669 draw_tab_T((-b+.15reduced_ss,h-letterheight),
670 (2.1*reduced_ss,letterheight),0.2);
671 draw_tab_A((-b-.05reduced_ss,-.5letterheight +.15reduced_ss),
672 (2.2*reduced_ss,letterheight),0.4);
673 draw_tab_B((-b+.025reduced_ss,-d),
674 (2.1*reduced_ss,letterheight),0.25);
677 fet_beginchar("tab clef", "tab", "tabclef")
681 fet_beginchar("tab clef (reduced)", "tab_change", "ctabclef")
685 fet_endgroup("clefs");