--- /dev/null
+% Feta (not the Font-En-Tja) music font -- implement trill symbols
+% This file is part of LilyPond, the GNU music typesetter.
+%
+% Copyright (C) 1998--2011 Jan Nieuwenhuizen <janneke@gnu.org>
+%
+%
+% LilyPond is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% LilyPond is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+
+% this file is included by feta-scripts.mf
+
+trill_thin# = 0.1 staff_space# + 0.6 stafflinethickness#;
+trill_stemwidth# = trill_thin#;
+define_pixels (trill_thin);
+define_whole_blacker_pixels (trill_stemwidth);
+
+trill_thick = 1/2 staff_space;
+trill_overlap = 1/6 staff_space;
+
+trill_width# = 5/6 staff_space#;
+trill_height# = 1/2 staff_space#;
+define_pixels (trill_height);
+define_whole_pixels (trill_width);
+
+pair trill_ne;
+trill_ne := unitvector ((2, 3));
+
+
+%
+% The trill element sticks out on both the left and right side
+% of the normal bbox, so you can glue them together easily.
+%
+% `ending' is either 0 for none, 1 for left, or 2 for right.
+%
+
+def draw_trillelement (expr offset, ending) =
+ clearxy;
+
+begingroup;
+ save nw, pat, nw_dist, ne_dist;
+ pair nw, nw_dist, ne_dist;
+ path pat;
+
+ pickup pencircle scaled trill_thin;
+
+ x1 = -.5 trill_width;
+ y1 = 0;
+ z3 = whatever * trill_ne + z1;
+ top y3 = vround trill_height;
+ z2 = z3 - (trill_thick - trill_thin) * trill_ne;
+
+ bot z3' = (top z3) scaled -1;
+
+ nw = unitvector (z2 - z3');
+ ne_dist = (nw rotated -90) * 0.5 trill_thin;
+ nw_dist = (trill_ne rotated 90) * 0.5 trill_thin;
+
+ z5 = whatever * trill_ne + (z1 - nw_dist);
+ z5 = whatever * nw + (z3' - ne_dist);
+
+ pat := z5
+ -- (z1 - nw_dist){-trill_ne}
+ -- (z1 + nw_dist){trill_ne}
+ -- (z3 + nw_dist){trill_ne}
+ .. top z3{right}
+ .. (z3 + ne_dist){-nw};
+ pat := pat
+ -- pat scaled -1 shifted (-feta_eps, -feta_eps)
+ -- cycle;
+ pat := pat shifted (offset, 0);
+ fill pat;
+
+ z4 = z1 - trill_ne * trill_overlap;
+ x4 := hround (x4 + 0.5 trill_thin) - 0.5 trill_thin;
+
+ pat := (z4 - nw_dist){-trill_ne}
+ .. bot z4{left}
+ .. lft z4{up}
+ .. (z4 + nw_dist){trill_ne}
+ -- (z1 + nw_dist){trill_ne}
+ -- (z1 - nw_dist){-trill_ne}
+ -- cycle;
+
+ if ending = 1:
+ fill pat shifted (offset, 0);
+ elseif ending = 2:
+ pat := pat scaled -1 shifted (-feta_eps, -feta_eps);
+ fill pat shifted (offset, 0);
+ fi;
+endgroup;
+enddef;
+
+
+fet_beginchar ("trilelement", "trilelement");
+ set_char_box (.5 trill_width#, .5 trill_width#,
+ trill_height#, trill_height#);
+
+ draw_trillelement (0, 0);
+ labels (1, 2, 3, 3', 4, 5, 5');
+fet_endchar;
+
+
+fet_beginchar ("prall", "prall");
+ set_char_box (trill_width#, trill_width#,
+ trill_height#, trill_height#);
+
+ draw_trillelement (-hround (.5 trill_width), 1);
+ draw_trillelement (-hround (.5 trill_width) + trill_width, 2);
+fet_endchar;
+
+
+fet_beginchar ("mordent", "mordent");
+ set_char_box (trill_width#, trill_width#,
+ 4/3 trill_height#, 4/3 trill_height#);
+
+ draw_trillelement (-hround (.5 trill_width), 1);
+ draw_trillelement (-hround (.5 trill_width) + trill_width, 2);
+
+ clearxy;
+
+ pickup pencircle scaled trill_stemwidth;
+
+ top y1 = h;
+ bot y2 = -d;
+ x1 = x2;
+ x2 = 0;
+
+ draw_gridline (z2, z1, trill_stemwidth);
+
+ labels (1, 2);
+fet_endchar;
+
+
+fet_beginchar ("prallprall", "prallprall");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, trill_height#);
+
+ draw_trillelement (-trill_width, 1);
+ draw_trillelement (0, 0);
+ draw_trillelement (trill_width, 2);
+fet_endchar;
+
+
+fet_beginchar ("prallmordent", "prallmordent");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ 4/3 trill_height#, 4/3 trill_height#);
+
+ draw_trillelement (-trill_width, 1);
+ draw_trillelement (0, 0);
+ draw_trillelement (trill_width, 2);
+
+ clearxy;
+
+ pickup pencircle scaled trill_stemwidth;
+
+ top y1 = h;
+ bot y2 = -d;
+ x1 = x2 ;
+ x2 = good.x (.5 trill_width);
+
+ draw_gridline (z2, z1, trill_stemwidth);
+
+ labels (1, 2);
+fet_endchar;
+
+
+save remember_pic;
+picture remember_pic;
+
+
+fet_beginchar ("upprall", "upprall");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, trill_height#);
+
+ draw_trillelement (-trill_width, 1);
+ draw_trillelement (0, 0);
+ draw_trillelement (trill_width, 2);
+
+ z11 = z4 shifted (-trill_width, 0);
+ z12 = z11 + (0, -2 trill_height);
+
+ penpos11 (trill_thin, angle (trill_ne) - 90);
+ penpos12 (trill_thin, angle (trill_ne yscaled -1) + 90);
+ penlabels (11, 12);
+
+ pickup pencircle scaled trill_stemwidth;
+
+ fill z11l{-trill_ne}
+ .. z12l{trill_ne yscaled -1}
+ .. bot z12
+ .. rt z12
+ .. z12r{-trill_ne yscaled -1}
+ .. z11r{trill_ne}
+ -- cycle;
+
+ remember_pic := currentpicture;
+fet_endchar;
+
+
+fet_beginchar ("upmordent", "upmordent");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ 4/3 trill_height#, 4/3 trill_height#);
+
+ currentpicture := remember_pic;
+
+ clearxy;
+
+ pickup pencircle scaled trill_stemwidth;
+
+ top y1 = h;
+ bot y2 = -d;
+ x1 = x2;
+ x2 = good.x (.5 trill_width);
+
+ draw_gridline (z2, z1, trill_stemwidth);
+
+ labels (1, 2);
+fet_endchar;
+
+
+fet_beginchar ("pralldown", "pralldown");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, trill_height#);
+
+ currentpicture := remember_pic xscaled -1;
+fet_endchar;
+
+
+fet_beginchar ("downprall", "downprall");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, trill_height#);
+
+ draw_trillelement (-trill_width, 1);
+ draw_trillelement (0, 0);
+ draw_trillelement (trill_width, 2);
+
+ z11 = z4 shifted (-trill_width, 0);
+ z12 = z11 + (0, 2 trill_height);
+
+ penpos11 (trill_thin, angle (trill_ne xscaled -1) - 90);
+ penpos12 (trill_thin, angle (trill_ne) - 90);
+ penlabels (11, 12);
+
+ pickup pencircle scaled trill_stemwidth;
+
+ fill z11l{trill_ne xscaled -1}
+ .. z12l{trill_ne}
+ .. top z12
+ .. rt z12
+ .. z12r{-trill_ne}
+ .. z11r{-trill_ne xscaled -1}
+ -- cycle;
+
+ remember_pic := currentpicture;
+fet_endchar;
+
+
+fet_beginchar ("downmordent", "downmordent");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ 4/3 trill_height#, 4/3 trill_height#);
+
+ currentpicture := remember_pic;
+
+ clearxy;
+
+ pickup pencircle scaled trill_stemwidth;
+
+ top y1 = h;
+ bot y2 = -d;
+ x1 = x2;
+ x2 = good.x (.5 trill_width);
+
+ draw_gridline (z2, z1, trill_stemwidth);
+
+ labels (1, 2);
+fet_endchar;
+
+
+fet_beginchar ("prallup", "prallup");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, trill_height#);
+
+ currentpicture := remember_pic xscaled -1;
+fet_endchar;
+
+
+fet_beginchar ("lineprall", "lineprall");
+ set_char_box (1.5 trill_width#, 1.5 trill_width#,
+ trill_height#, 4 trill_height#);
+
+ draw_trillelement (-trill_width, 1);
+
+ labels (1, 2, 3, 3', 4, 5, 5');
+
+ pickup pencircle scaled trill_stemwidth;
+
+ penpos10 (trill_stemwidth, 0);
+ penpos11 (trill_stemwidth, 0);
+
+ x10l = x4 - .5 trill_thin - trill_width;
+ y10 = y4;
+ z11 = z10 + (0, h);
+
+ penlabels (10, 11);
+
+ fill z11l
+ .. top z11
+ .. z11r
+ -- z10r
+ -- z10l
+ -- cycle;
+
+ draw_trillelement (0, 0);
+ draw_trillelement (trill_width, 2);
+fet_endchar;
projects / lilypond.git / blobdiff