+% Feta (not the Font-En-Tja) music font -- auxiliary macros for both feta and parmesan fonts
+% This file is part of LilyPond, the GNU music typesetter.
+%
+% Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
+%
+% The LilyPond font 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, or under the SIL Open Font License.
+%
+% 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/>.
+
+
%
% debugging
%
+
def print_penpos (suffix $) =
message
"z" & str$ & "l = (" & decimal x.$.l & ", " &decimal y.$.l & ");"
enddef;
-def draw_staff (expr first, last, offset) =
+def draw_staff_if_debugging (expr first, last) =
if test <> 0:
pickup pencircle scaled stafflinethickness;
for i := first step 1 until last:
- draw (-staff_space, (i + offset) * staff_space)
- .. (4 staff_space, (i + offset) * staff_space);
+ draw (-staff_space,
+ (i + stafflines_y_offset) * staff_space_rounded)
+ -- (4 staff_space,
+ (i + stafflines_y_offset) * staff_space_rounded);
endfor;
fi;
enddef;
pickup pencircle scaled 2;
for i := first step 1 until last:
- p := (-staff_space, (i + offset) * staff_space)
- .. (4 staff_space, (i + offset) * staff_space);
+ p := (-staff_space,
+ (i + offset) * staff_space_rounded)
+ -- (4 staff_space,
+ (i + offset) * staff_space_rounded);
draw p shifted (0, .5 stafflinethickness);
draw p shifted (0, -.5 stafflinethickness);
enddef;
-def del_pen_stack=
+def del_pen_stack =
save save_pen_stack, pen_stack_idx;
enddef;
enddef;
+def soft_start_penstroke text t =
+ forsuffixes e = l, r:
+ path_.e := t;
+ endfor;
+
+ if cycle path_.l:
+ cyclestroke_;
+ else:
+ fill path_.l
+ -- reverse path_.r
+ ..tension1.5.. cycle;
+ fi;
+enddef;
+
+
+def soft_end_penstroke text t =
+ forsuffixes e = l, r:
+ path_.e := t;
+ endfor;
+
+ if cycle path_.l:
+ cyclestroke_;
+ else:
+ fill path_.l
+ ..tension1.5.. reverse path_.r
+ -- cycle;
+ fi;
+enddef;
+
+
%
% Make a round path segment going from P to Q. 2*A is the angle that the
% path should take.
def draw_rounded_block (expr bottom_left, top_right, roundness) =
begingroup;
- save round;
+ save size;
save x, y;
- round = floor min (roundness,
- xpart (top_right - bottom_left),
- ypart (top_right - bottom_left));
-
- pickup pencircle scaled round;
+ % Originally, there was `floor' instead of `round', but this is
+ % not correct because pens use `round' also.
+ size = round min (roundness,
+ xpart (top_right - bottom_left),
+ ypart (top_right - bottom_left));
- z2 + (round / 2, round / 2) = top_right;
- z4 - (round / 2, round / 2) = bottom_left;
+ z2 + (size / 2, size / 2) = top_right;
+ z4 - (size / 2, size / 2) = bottom_left;
y3 = y2;
y4 = y1;
x2 = x1;
x4 = x3;
- fill bot z1
- .. rt z1
- --- rt z2
- .. top z2
- --- top z3
- .. lft z3
- --- lft z4
- .. bot z4
- --- cycle;
+ pickup pencircle scaled size;
+
+ fill bot z1{right}
+ .. rt z1{up}
+ -- rt z2{up}
+ .. top z2{left}
+ -- top z3{left}
+ .. lft z3{down}
+ -- lft z4{down}
+ .. bot z4{right}
+ -- cycle;
endgroup;
enddef;
y2 = ypart top_right;
fill (x1, y1)
- --- (x2, y1)
- --- (x2, y2)
- --- (x1, y2)
- --- cycle;
+ -- (x2, y1)
+ -- (x2, y2)
+ -- (x1, y2)
+ -- cycle;
enddef;
% line = diameter of line attachment
% direction = is ink on left or right side (1 or -1)
%
+% Note that `currentpen' must be set correctly -- only circular pens
+% are supported properly.
def flare_path (expr pos, alpha, beta, line, flare, direction) =
begingroup;
+ save thick;
+
+ thick = pen_top + pen_bot;
+
clearxy;
- penpos1 (line, 180 + beta + alpha);
- z1r = pos;
+ penpos1' (line - thick, 180 + beta + alpha);
+ top z1'r = pos;
- penpos2 (flare, 180 + beta + alpha);
- z2 = z3;
+ penpos2' (flare - thick, 180 + beta + alpha);
+ z2' = z3';
- penpos3 (flare, 0 + alpha);
- z3l = z1r + (1/2 + 0.43) * flare * dir (alpha + beta);
+ penpos3' (flare - thick, 0 + alpha);
+ rt x3'l = hround (x1'r
+ + (1/2 + 0.43) * flare * xpart dir (alpha + beta));
+ bot y2'l = vround (y1'r
+ + (1 + 0.43) * flare * ypart dir (alpha + beta));
- z4 = z2r - line * dir (alpha);
+ rt x4' = x2'r - line * xpart dir (alpha);
+ y4' = y2'r - line * ypart dir (alpha);
- penlabels (1, 2, 3, 4);
+ penlabels (1', 2', 3', 4');
save t, p;
t = 0.833;
path p;
- p := z1r{dir (alpha)}
- .. z3r{dir (180 + alpha - beta)}
- .. z2l{dir (alpha + 180)}
- .. z3l{dir (180 + alpha + beta)}
- ..tension t.. z4{dir (180 + alpha + beta)}
- .. z1l{dir (alpha + 180)};
+ p := z1'r{dir (alpha)}
+ .. z3'r{dir (180 + alpha - beta)}
+ .. z2'l{dir (alpha + 180)}
+ .. z3'l{dir (180 + alpha + beta)}
+ ..tension t.. z4'{dir (180 + alpha + beta)}
+ .. z1'l{dir (alpha + 180)};
if direction <> 1:
p := reverse p;
def draw_bulb (expr turndir, zl, zr, bulb_rad, radius_factor)=
begingroup;
- save rad, ang;
+ save rad, ang, pat;
+ path pat;
clearxy;
rad = bulb_rad;
- z1' = z0' + radius_factor* rad * dir (ang + turndir * 100);
+ z1' = z0' + radius_factor * rad * dir (ang + turndir * 100);
z2' = z0' + rad * dir (ang + turndir * 300);
labels (0', 1', 2');
- fill zr{dir (ang + turndir * 90)}
- .. z1'
- .. z2'
+ pat = zr{dir (ang + turndir * 90)}
+ .. z1'
+ .. z2'
+ .. cycle;
+
+ % avoid grazing outlines
+ fill subpath (0, 2.5) of pat
-- cycle;
endgroup
enddef;
+
pi := 3.14159;
+
+
+%
+% To get symmetry at low resolutions we need to shift some points and
+% paths, but not if mf2pt1 is used.
+%
+
+if known miterlimit:
+ vardef hfloor primary x = x enddef;
+ vardef vfloor primary y = y enddef;
+ vardef hceiling primary x = x enddef;
+ vardef vceiling primary y = y enddef;
+else:
+ vardef hfloor primary x = floor x enddef;
+ vardef vfloor primary y = (floor y.o_)_o_ enddef;
+ vardef hceiling primary x = ceiling x enddef;
+ vardef vceiling primary y = (ceiling y.o_)_o_ enddef;
+fi;
projects / lilypond.git / blobdiff