fet_begingroup ("clefs");
+
+%
+% New bulb routine:
+%
+% Insert a brushed piece of the path, and draw the rest of the bulb
+% separately.
+%
+% The bulb has circular form. Neat merging of the bulb and brushed path
+% is done by playing with tension.
+%
+
+def new_bulb (expr start_point, start_angle,
+ outer_tangent_point,
+ end_point, end_angle,
+ big_radius, bulb_radius, flare,
+ direction, turning_dir) =
+begingroup;
+ save pat, before, after;
+ save center;
+ save u, v;
+ path pat, before, after;
+ pair center;
+
+ clearxy;
+
+ center = outer_tangent_point
+ + big_radius * dir (0);
+% + (big_radius - bulb_radius) * dir (-turning_dir * 90)
+
+ z1' = center + bulb_radius * dir (turning_dir * 180);
+ z2' = outer_tangent_point + flare * dir (0);
+ z3' = center + bulb_radius * dir (0);
+ z4' = center + bulb_radius * dir (turning_dir * 90);
+ z5' = center - 0.5 [big_radius, bulb_radius] * dir (turning_dir * 90);
+
+ labels (1', 2', 3', 4', 5');
+
+ before := z3'{dir (turning_dir * 90)}
+ .. z4'{-dir (0)}
+ ..tension 1.1.. z1'{-dir (turning_dir* 90)};
+ after := z2'{dir (turning_dir * 90)}
+ .. end_point{dir (end_angle)};
+ (u, v) = before intersectiontimes after;
+
+ pat := start_point{dir (start_angle)}
+ .. outer_tangent_point{dir (-turning_dir * 90)}
+ ..tension 1.02.. z5'{dir (0)}
+ .. subpath (0, u) of before
+ .. subpath (v, infinity) of after;
+
+ if direction = 0:
+ pat := reverse pat;
+ fi
+
+pat
+endgroup
+enddef;
+
+
%
% [Wanske] says the bulbs should be positioned about 1/4 right of the
% `arrow'.
draw_c_clef (.8);
fet_endchar;
+def draw_varc_clef (expr reduction) =
+ save hair, norm, reduced_ss;
+ save thick, thin, upper_stroke;
-%
-% New bulb routine:
-%
-% Insert a brushed piece of the path, and draw the rest of the bulb
-% separately.
-%
-% The bulb has circular form. Neat merging of the bulb and brushed path
-% is done by playing with tension.
-%
+ path upper_stroke;
-def new_bulb (expr start_point, start_angle,
- outer_tangent_point,
- end_point, end_angle,
- big_radius, bulb_radius, flare,
- direction, turning_dir) =
-begingroup;
- save pat, before, after;
- save center;
- save u, v;
- path pat, before, after;
- pair center;
+ reduced_ss# = staff_space# * reduction;
+ norm# := 2/3 reduced_ss#;
+ hair# := 0.06 reduced_ss# + 0.5 linethickness#;
+ define_pixels (norm, reduced_ss);
+ define_whole_vertical_blacker_pixels (hair);
- clearxy;
+ set_char_box (0, 2.25 reduced_ss#, 2 reduced_ss#, 2 reduced_ss#);
- center = outer_tangent_point
- + big_radius * dir (0);
-% + (big_radius - bulb_radius) * dir (-turning_dir * 90)
+ % make unreduced glyph fit exactly into five staff lines
+ if reduction = 1:
+ h := d := 2 staff_space_rounded;
+ fi;
- z1' = center + bulb_radius * dir (turning_dir * 180);
- z2' = outer_tangent_point + flare * dir (0);
- z3' = center + bulb_radius * dir (0);
- z4' = center + bulb_radius * dir (turning_dir * 90);
- z5' = center - 0.5 [big_radius, bulb_radius] * dir (turning_dir * 90);
+ % assure that the gap between the left and right stem
+ % has the same number of pixels as the thickness of the right
+ % stem
+ draw_block ((0, -d + feta_shift),
+ (3/4 norm + 1/2 hair, h));
+ draw_block ((3/4 norm + 1/2 hair + hround (3/2 hair), -d + feta_shift),
+ (3/4 norm + 1/2 hair + 2 hround (3/2 hair), h));
- labels (1', 2', 3', 4', 5');
+ % assure symmetry
+ h := h - feta_shift;
- before := z3'{dir (turning_dir * 90)}
- .. z4'{-dir (0)}
- ..tension 1.1.. z1'{-dir (turning_dir* 90)};
- after := z2'{dir (turning_dir * 90)}
- .. end_point{dir (end_angle)};
- (u, v) = before intersectiontimes after;
+ thin := hround (3/2 hair);
+ thick := hround (3/4 norm);
- pat := start_point{dir (start_angle)}
- .. outer_tangent_point{dir (-turning_dir * 90)}
- ..tension 1.02.. z5'{dir (0)}
- .. subpath (0, u) of before
- .. subpath (v, infinity) of after;
+ x1'' = x8'' = x6'' - reduced_ss = 3/4 norm + 1/2 hair + 1.5 hround (3/2 hair);
+ x7'' = x6'' - 1/2 hair;
+ % the thick part of the c clef should be placed in the
+ % center of the forth staff space
+ y1'' = y2'' = 0.5 reduced_ss + thick/2;
- if direction = 0:
- pat := reverse pat;
- fi
+ y7'' = y8'' = y6'' - 1/2 hair = y1'' - thick;
-pat
-endgroup
+ x2'' = x3'' = x4'' = x6'' - thin;
+
+ y5'' = y3'' = y2'' + 0.6 reduced_ss;
+ x5'' = x6'';
+
+ y4'' = 2.25 reduced_ss;
+
+ upper_stroke := z1'' -- z2''
+ -- new_bulb (z3'', 90, z4'', z5'', 270,
+ 0.37 reduced_ss, 0.33 reduced_ss, thin, 1, -1)
+ -- z6''{down} .. z7''{left} -- z8'' -- cycle;
+
+ fill upper_stroke;
+ % the c clef parts should be symmetrical to the forth staff line
+ fill upper_stroke yscaled -1;
+
+ penlabels (1'', 2'', 3'', 4'', 5'', 6'', 7'', 8'');
+
+ draw_staff_if_debugging (-2, 2);
enddef;
+fet_beginchar ("Variant C clef", "varC");
+ draw_varc_clef (1.0);
+fet_endchar;
+
+
+fet_beginchar ("Variant C clef", "varC_change");
+ draw_varc_clef (0.8);
+fet_endchar;
+
+
%
% There is some variation in the shape of bass clefs.
%
def debugfill = fill enddef;
-def draw_gclef (expr reduction) =
- save reduced_ss, downstroke_dir, downstroke_angle, center;
+def draw_gclef (expr reduction, double_shift, extra_width) =
+ save reduced_ss, double_shift_ss, extra_width_ss;
+ save downstroke_dir, downstroke_angle, center;
save breapth_factor, inner_thick_end, thinness, thickness, thinnib;
save start_angle, inner_start_angle;
save upward_swoosh_angle, bot_angle;
- save pat;
+ save swirl, bulb, pat;
save corr_angle, corr, left_, right_, up_, down_, bot_angle_;
- path pat;
+ path swirl, bulb, pat;
pair downstroke_dir, center;
transform corr;
pair left_, right_, up_, down_;
thinnib = thinness;
- set_char_box (0, 1.71 * breapth_factor * reduced_ss#,
+ set_char_box (0, (1.71 * breapth_factor + double_shift + extra_width) * reduced_ss#,
2.55 * reduced_ss#, 4.8 * reduced_ss# / reduced_loop_correction);
center := (breapth_factor * reduced_ss, 0);
.. z110l{down}
.. z110'l;
- fill z102l{right}
- .. z103l
- .. z104l{left_}
- ..tension 1.07.. z105l{up_}% inside curve
- .. z107l{up_}
- ..tension 1.2.. z120r{curl 1}
- .. {direction 0 of pat}z120l
- -- z108
- -- z109r % {dir (downstroke_angle + 0)}
- ..tension 0.8.. z107r{down_}
- .. z105r{down_}
- .. z104r{right_}
- .. z103r
- .. z102r{left_}
- ..tension .95.. z101r
- -- simple_serif (z101r, z101l, 80)
- -- z101l
- ..tension 0.85.. cycle;
+ swirl := z102l{right}
+ .. z103l
+ .. z104l{left_}
+ ..tension 1.07.. z105l{up_}% inside curve
+ .. z107l{up_}
+ ..tension 1.2.. z120r{curl 1}
+ .. {direction 0 of pat}z120l
+ -- z108
+ -- z109r % {dir (downstroke_angle + 0)}
+ ..tension 0.8.. z107r{down_}
+ .. z105r{down_}
+ .. z104r{right_}
+ .. z103r
+ .. z102r{left_}
+ ..tension .95.. z101r
+ -- simple_serif (z101r, z101l, 80)
+ -- z101l
+ ..tension 0.85.. cycle;
+ fill swirl;
penstroke z121e
.. z110e{down_}
.. z111e{dir (-95 + corr_angle)}
.. z112e{dir (bot_angle_)};
- fill new_bulb (z112r, bot_angle_, z113r, z112l, bot_angle_ + 180,
- 0.45 reduced_ss, 0.38 reduced_ss,
- thinnib + .05 staff_space, 1, -1)
- -- cycle;
+ bulb := new_bulb (z112r, bot_angle_, z113r, z112l, bot_angle_ + 180,
+ 0.45 reduced_ss, 0.38 reduced_ss,
+ thinnib + .05 staff_space, 1, -1)
+ -- cycle;
+
+ fill bulb;
+
+ if double_shift <> 1:
+
+ % transform helper points
+ for n := 106, 110, 111, 112, 121:
+ forsuffixes e := l,,r:
+ z[n+100]e = z[n]e shifted (double_shift * reduced_ss, 0);
+ endfor
+ endfor
+ for n := 110, 111:
+ forsuffixes e := l,,r:
+ z[n+100]'e = z[n]'e shifted (double_shift * reduced_ss, 0);
+ endfor
+ endfor
+
+ fill swirl shifted (double_shift * reduced_ss, 0);
+ penstroke z221e
+ .. z210e{down_}
+ .. z210'e
+ .. z206e
+ .. z211'e
+ .. z211e{dir (-95 + corr_angle)}
+ .. z212e{dir (bot_angle_)};
+ fill bulb shifted (double_shift * reduced_ss, 0);
+ fi;
penlabels (range 101 thru 121);
penlabels (110', 111');
fet_beginchar ("G clef", "G");
- draw_gclef (1.0);
+ draw_gclef (1.0, 0, 0);
fet_endchar;
fet_beginchar ("G clef", "G_change");
- draw_gclef (0.8);
+ draw_gclef (0.8, 0, 0);
+fet_endchar;
+
+
+fet_beginchar ("double G clef", "GG");
+ draw_gclef (1.0, 1.5, 0);
+fet_endchar;
+
+
+fet_beginchar ("double G clef", "GG_change");
+ draw_gclef (0.8, 1.5, 0);
+fet_endchar;
+
+def draw_tenor_extension (expr reduction) =
+ save reduced_ss, thick, thin, upper_stroke, ne_beam_dir, nw_dist;
+ path upper_stroke;
+ pair ne_beam_dir, nw_dist;
+
+ reduced_ss# = staff_space# * reduction;
+ define_pixels (reduced_ss);
+
+ thin := hround (0.17 reduced_ss);
+ thick := hround (0.51 reduced_ss);
+
+ % the slanted left edge should protrude the g clef by a
+ % fixed amount relative to the width of the g clef:
+ x1'' = x6'' - 1.8 reduced_ss - 0.5 staff_space = 0.62 reduced_ss * reduction;
+ x8'' = x1'' - 2 thin;
+ x2'' = x3'' = x4'' = x6'' - thin;
+ x5'' = x6'';
+ x7'' = x6'' - 1/3 thin;
+ % the thick part of the c clef should be placed in the
+ % center of the forth staff space
+ y1'' = y2'' = 2.5 staff_space + thick/2;
+ y7'' = y8'' = y6'' - 1/3 thin = y1'' - thick;
+ y5'' = y3'' = y2'' + reduced_ss;
+ y4'' = 4.5 reduced_ss;
+
+ upper_stroke := z2''
+ -- new_bulb (z3'', 90, z4'', z5'', 270,
+ 0.35 reduced_ss, 0.22 reduced_ss, thin, 1, -1)
+ -- z6''{down} .. z7''{left};
+
+ % z1'' and z8'' are helper points that are responsible for
+ % hiding the lower left slant in the g clef's stroke
+ % z9'' and z10'' are computed to obtain nice rounded corners
+
+ pickup pencircle scaled 2/3 thin;
+ lft x9'' = x1'';
+ lft x10'' = x8'';
+
+ top y9'' = y1'';
+ bot y10'' = y8'';
+
+ ne_beam_dir = unitvector (z9'' - z10'');
+ nw_dist = (ne_beam_dir rotated 90) * 1/3 thin;
+
+ fill (z9''+nw_dist){ne_beam_dir}
+ ... top z9''{right}
+ -- upper_stroke
+ -- bot z10''{left}
+ ... (z10''+nw_dist){ne_beam_dir}
+ -- cycle;
+
+ % the slanted edge of the lower hook must not be visible, so it is
+ % shifted accordingly in x direction;
+ z1''' = z1'' shifted (staff_space - 0.9 reduced_ss, - staff_space);
+ z8''' = z8'' shifted (staff_space - 0.9 reduced_ss, - staff_space);
+
+ % the visible c clef parts should be symmetrical to the forth staff line
+ fill z1'''
+ -- reverse upper_stroke yscaled -1 shifted (0, 4 staff_space)
+ -- z8''' -- cycle;
+
+ penlabels (1''',2'',3'',4'',5'',6'',7'',8''',9'',10'');
+
+ draw_staff_if_debugging (-1, 3);
+enddef;
+
+fet_beginchar ("Tenor G clef", "tenorG");
+ draw_gclef (1.0, 0, 0.75);
+ draw_tenor_extension (1.0);
fet_endchar;
+fet_beginchar ("Tenor G clef", "tenorG_change");
+ draw_gclef (0.8, 0, 0.75);
+ draw_tenor_extension (0.8);
+fet_endchar;
+
%%%%
%
% PERCUSSION
draw_percussion_clef (.8);
fet_endchar;
+def draw_varpercussion_clef (expr reduction) =
+ save reduced_ss, thin, thick;
+
+ reduced_ss# = staff_space# * reduction;
+ define_pixels (reduced_ss);
+
+ set_char_box (-.67 reduced_ss#, 1.75 reduced_ss#,
+ 1.675 reduced_ss#, 1.675 reduced_ss#);
+
+ thin := hround (0.175 reduced_ss);
+ thick := hround (0.35 reduced_ss);
+
+ d := d - feta_shift;
+
+ draw_block ((-b, -d), (-b + thin, h));
+ draw_block ((w - thin, -d), (w, h));
+
+ pickup penrazor scaled thick rotated 90;
+
+ top z1 = (-b + thin/2, h);
+ top z2 = (w - thin/2, h);
+
+ bot z3 = (-b + thin/2, -d);
+ bot z4 = (w - thin/2, -d);
+
+ draw z1 -- z2;
+ draw z3 -- z4;
+
+ penlabels (range 1 thru 4);
+
+ draw_staff_if_debugging (-3, 1);
+enddef;
+
+
+fet_beginchar ("variant percussion clef", "varpercussion");
+ draw_varpercussion_clef (1.0);
+fet_endchar;
+
+
+fet_beginchar ("variant percussion clef (reduced)", "varpercussion_change");
+ draw_varpercussion_clef (.8);
+fet_endchar;
+
def draw_tab_T (expr pos, siz, slant) =
begingroup;
projects / lilypond.git / commitdiff