% Feta (not the Font-En-Tja) music font -- implement Clefs -*-Fundamental-*-
% This file is part of LilyPond, the GNU music typesetter.
%
-% Copyright (C) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>,
+% Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>,
% Jan Nieuwenhuizen <janneke@gnu.org>,
% Juergen Reuter <reuter@ipd.uka.de>
%
def draw_gclef (expr reduction) =
save reduced_ss, downstroke_dir, downstroke_angle, center;
save breapth_factor, inner_thick_end, thinness, thickness, thinnib;
- save start_angle, inner_start_angle, thinness;
+ save start_angle, inner_start_angle;
save upward_swoosh_angle, bot_angle;
save pat;
+ save corr_angle, corr, left_, right_, up_, down_, bot_angle_;
path pat;
pair downstroke_dir, center;
+ transform corr;
+ pair left_, right_, up_, down_;
reduced_ss# = staff_space# * reduction;
define_pixels (reduced_ss);
z21l = z20l;
z21r = z9r;
- pat := z21l
- .. z10l{down}
- .. z10'l;
-
- fill z2l{right}
- .. z3l
- .. z4l{left}
- ..tension 1.07.. z5l{up} % inside curve
- .. z7l{up}
- ..tension 1.2.. z20r{curl 1}
- .. {direction 0 of pat}z20l
- -- z8
- -- z9r % {dir (downstroke_angle + 0)}
- ..tension 0.8.. z7r{down}
- .. z5r{down}
- .. z4r{right}
- .. z3r
- .. z2r{left}
- ..tension .95.. z1r
- -- simple_serif (z1r, z1l, 80)
- -- z1l
+ % after computing all points, we want to rotate the clef
+ % rotating the whole picture won't work due to the complexity
+ % of the path and metafont's memory limitations, so we transform
+ % each point and draw the clef thereafter
+ corr_angle := 1.5;
+ corr := identity rotatedabout (center, -corr_angle);
+
+ bot_angle_ := bot_angle + corr_angle;
+
+ left_ := left rotated corr_angle;
+ right_ := right rotated corr_angle;
+ up_ := up rotated corr_angle;
+ down_ := down rotated corr_angle;
+
+ % transform points; we transform every point and save it
+ % to a shifted index range: z1 -> z101, z2 -> z102, etc.
+ for n := 1 upto 21:
+ forsuffixes e := l,,r:
+ z[n+100]e = z[n]e transformed corr;
+ endfor
+ endfor
+
+ % transform helper points
+ for n := 10, 11:
+ forsuffixes e := l,,r:
+ z[n+100]'e = z[n]'e transformed corr;
+ endfor
+ endfor
+
+ pat := z121l
+ .. 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;
- penstroke z21e
- .. z10e{down}
- .. z10'e
- .. z6e
- .. z11'e
- .. z11e{dir (-95)}
- .. z12e{dir (bot_angle)};
+ penstroke z121e
+ .. z110e{down_}
+ .. z110'e
+ .. z106e
+ .. z111'e
+ .. z111e{dir (-95 + corr_angle)}
+ .. z112e{dir (bot_angle_)};
- fill new_bulb (z12r, bot_angle, z13r, z12l, bot_angle + 180,
+ 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;
- penlabels (range 1 thru 21);
- penlabels (10', 11');
+ penlabels (range 101 thru 121);
+ penlabels (110', 111');
draw_staff (-1, 3, 0);
enddef;