+% 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 & ");"
+ & " z" & str$ & "r = (" & decimal x.$.r & ", " & decimal y.$.r & ");";
+enddef;
+
+
def test_grid =
-if test>1:
- proofrulethickness 1pt#;
- makegrid(0pt,0pt for i:=-5pt step 1pt until 5pt: ,i endfor)
- (0pt,0pt for i:=-5pt step 1pt until 5pt: ,i endfor);
- proofrulethickness .1pt#;
- makegrid(0pt,0pt for i:=-4.8pt step .2pt until 4.8pt: ,i endfor)
- (0pt,0pt for i:=-4.8pt step .2pt until 4.8pt: ,i endfor);
-fi
- enddef;
+ if test > 1:
+ proofrulethickness 1pt#;
+
+ makegrid
+ (0pt, 0pt for i := -5pt step 1pt until 5pt: , i endfor)
+ (0pt, 0pt for i := -5pt step 1pt until 5pt: , i endfor);
+
+ proofrulethickness .1pt#;
+
+ makegrid
+ (0pt, 0pt for i := -4.8pt step .2pt until 4.8pt: , i endfor)
+ (0pt, 0pt for i := -4.8pt step .2pt until 4.8pt: , i endfor);
+ fi;
+enddef;
+
def treq =
tracingequations := tracingonline := 1;
enddef;
-def draw_staff(expr first, last, offset)=
-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);
- endfor
-fi;
+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 + stafflines_y_offset) * staff_space_rounded)
+ -- (4 staff_space,
+ (i + stafflines_y_offset) * staff_space_rounded);
+ endfor;
+ fi;
+enddef;
+
+
+%
+% Draw the outline of the stafflines. For fine tuning.
+%
+
+def draw_staff_outline (expr first, last, offset) =
+ if test <> 0:
+ save p;
+ path p;
+
+ pickup pencircle scaled 2;
+
+ for i := first step 1 until last:
+ 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);
+ endfor;
+ fi;
enddef;
%
-% Transforms
+% Transformations
%
-def scaledabout(expr point, scale) =
+def scaledabout (expr point, scale) =
shifted -point scaled scale shifted point
enddef;
%
-% make a local (restored after endgroup) copy of t_var
+% make a local (restored after endgroup) copy of t_var
%
-def local_copy(text type, t_var)=
+
+def local_copy (text type, t_var) =
save copy_temp;
- type copy_temp;
+ type copy_temp;
copy_temp := t_var;
save t_var;
type t_var;
% Urgh! Want to do parametric types
%
-def del_picture_stack=
+def del_picture_stack =
save save_picture_stack, picture_stack_idx;
enddef;
-% better versions of Taupin/Egler savepic cmds
+
%
+% better versions of Taupin/Egler savepic cmds
%
-def make_picture_stack =
- % override previous stack.
+
+def make_picture_stack =
+ % override previous stack
del_picture_stack;
picture save_picture_stack[];
numeric picture_stack_idx;
picture_stack_idx := 0;
- def push_picture(expr p) =
- save_picture_stack[picture_stack_idx] := p ;
+
+ def push_picture (expr p) =
+ save_picture_stack[picture_stack_idx] := p;
picture_stack_idx := picture_stack_idx + 1;
enddef;
- def pop_picture = save_picture_stack[decr picture_stack_idx] enddef;
+
+ def pop_picture = save_picture_stack[decr picture_stack_idx] enddef;
def top_picture = save_picture_stack[picture_stack_idx] enddef;
enddef;
+%
% save/restore pens
% why can't I delete individual pens?
+%
+
def make_pen_stack =
del_pen_stack;
pen save_pen_stack[];
numeric pen_stack_idx;
pen_stack_idx := 0;
- def push_pen(expr p) =
- save_pen_stack[pen_stack_idx] := p ;
- pen_stack_idx := pen_stack_idx +1;
+ def push_pen (expr p) =
+ save_pen_stack[pen_stack_idx] := p;
+ pen_stack_idx := pen_stack_idx + 1;
enddef;
- def pop_pen = save_pen_stack[decr pen_stack_idx] enddef;
+ def pop_pen = save_pen_stack[decr pen_stack_idx] enddef;
def top_pen = save_pen_stack[pen_stack_idx] enddef;
enddef;
-def del_pen_stack=
+
+
+def del_pen_stack =
save save_pen_stack, pen_stack_idx;
enddef;
+
%
% drawing
%
def soft_penstroke text t =
- forsuffixes e = l,r: path_.e:=t; endfor
+ forsuffixes e = l, r:
+ path_.e := t;
+ endfor;
+
if cycle path_.l:
- cyclestroke_
+ cyclestroke_;
else:
- fill path_.l .. tension1.5 .. reverse path_.r .. tension1.5 .. cycle
- fi
+ fill path_.l
+ ..tension1.5.. reverse path_.r
+ ..tension1.5.. cycle;
+ fi;
+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
+% Make a round path segment going from P to Q. 2*A is the angle that the
% path should take.
%
-def simple_serif(expr p,q, a)=
- p{dir(angle(q-p) -a)} .. q{ - dir(angle(p -q) + a)}
+def simple_serif (expr p, q, a) =
+ p{dir (angle (q - p) - a)}
+ .. q{-dir (angle (p - q) + a)}
enddef;
-%
+
%
-% draw an axis aligned block making sure that edges are on pixels.
+% Draw an axis aligned block making sure that edges are on pixels.
%
def draw_rounded_block (expr bottom_left, top_right, roundness) =
- save round;
- round = floor min(roundness,xpart (top_right-bottom_left),
- ypart (top_right-bottom_left));
-
-
- pickup pencircle scaled round;
-
- begingroup;
- save x,y;
- z2+(round/2,round/2) = top_right;
- z4-(round/2,round/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;
- endgroup;
- enddef;
-
-
-
- def draw_block (expr bottom_left, top_right) =
- draw_rounded_block (bottom_left, top_right, blot_diameter);
- enddef;
-
- def draw_square_block (expr bottom_left, top_right) =
- save x,y;
+begingroup;
+ save size;
+ save x, y;
+
+ % 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 + (size / 2, size / 2) = top_right;
+ z4 - (size / 2, size / 2) = bottom_left;
+ y3 = y2;
+ y4 = y1;
+ x2 = x1;
+ x4 = x3;
+
+ 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;
+
+
+def draw_block (expr bottom_left, top_right) =
+ draw_rounded_block (bottom_left, top_right, blot_diameter);
+enddef;
+
+
+def draw_square_block (expr bottom_left, top_right) =
+ save x, y;
+
x1 = xpart bottom_left;
y1 = ypart bottom_left;
x2 = xpart top_right;
y2 = ypart top_right;
+ fill (x1, y1)
+ -- (x2, y1)
+ -- (x2, y2)
+ -- (x1, y2)
+ -- cycle;
+enddef;
+
- fill (x1,y1) --- (x2,y1) --- (x2,y2) --- (x1,y2) --- cycle;
- enddef;
+def draw_gridline (expr bottom_left, top_right, thickness) =
+ draw_rounded_block (bottom_left - (thickness / 2, thickness / 2),
+ top_right + (thickness / 2, thickness / 2),
+ thickness);
+enddef;
- def draw_gridline (expr bottom_left,top_right,thickness) =
- draw_rounded_block (bottom_left-(thickness/2,thickness/2),
- top_right+(thickness/2,thickness/2),
- thickness);
- enddef;
-
+def draw_brush (expr a, w, b, v) =
+ save x, y;
-def draw_brush(expr a,w,b,v) =
- save x,y;
- z1=a; z2=b;
- penpos3(w,angle(z2-z1)+90);
- penpos4(w,angle(z2-z1));
- penpos5(v,angle(z1-z2)+90);
- penpos6(v,angle(z1-z2));
+ z1 = a;
+ z2 = b;
z3 = z4 = z1;
z5 = z6 = z2;
- fill z3r{z3r-z5l}..z4l..{z5r-z3l}z3l..z5r{z5r-z3l}..z6l..{z3r-z5l}z5l..cycle;
+ penpos3 (w, angle (z2 - z1) + 90);
+ penpos4 (w, angle (z2 - z1));
+ penpos5 (v, angle (z1 - z2) + 90);
+ penpos6 (v, angle (z1 - z2));
+
+ fill z3r{z3r - z5l}
+ .. z4l
+ .. {z5r - z3l}z3l
+ .. z5r{z5r - z3l}
+ .. z6l
+ .. {z3r - z5l}z5l
+ .. cycle;
enddef;
-
%
-% make a superellipsoid segment going from FROM to TO, with SUPERNESS.
-% Take superness = sqrt(2)/2 to get a circle segment
+% Make a superellipsoid segment going from FROM to TO, with SUPERNESS.
+% Take superness = sqrt(2)/2 to get a circle segment.
%
-% see Knuth, p. 267 and p.126
-def super_curvelet(expr from, to, superness, dir) =
+% See Knuth, p. 267 and p.126.
+
+def super_curvelet (expr from, to, superness, dir) =
if dir = 1:
- (superness [xpart to, xpart from], superness [ypart from,ypart to]){to - from}
+ (superness [xpart to, xpart from],
+ superness [ypart from, ypart to]){to - from}
else:
- (superness [xpart from, xpart to], superness [ypart to,ypart from]){to - from}
+ (superness [xpart from, xpart to],
+ superness [ypart to, ypart from]){to - from}
fi
enddef;
%
% Bulb with smooth inside curve.
%
-% alpha = start direction.
-% beta = which side to turn to.
+% alpha = start direction
+% beta = which side to turn to
% flare = diameter of the bulb
% line = diameter of line attachment
% direction = is ink on left or right side (1 or -1)
%
-def flare_path(expr pos,alpha,beta,line,flare, direction) =
- begingroup;
+% 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;
- penpos2(flare,180+beta+alpha);
- z2=z3;
- penpos3(flare,0+alpha);
- z3l=z1r+(1/2+0.43)*flare*dir(alpha+beta) ;
- save taille;
- taille = 0.0;
- z4=z2r- line * dir(alpha);
- penlabels(1,2,3,4);
- pickup pencircle;
- save t; t=0.833;
- save p;
+
+ penpos1' (line - thick, 180 + beta + alpha);
+ top z1'r = pos;
+
+ penpos2' (flare - thick, 180 + beta + alpha);
+ z2' = z3';
+
+ 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));
+
+ rt x4' = x2'r - line * xpart dir (alpha);
+ y4' = y2'r - line * ypart dir (alpha);
+
+ 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)};
- if direction = 1:
- p
- else:
- reverse p
- fi
- endgroup
- enddef;
+ 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;
+ fi;
+
+p
+endgroup
+enddef;
-def brush(expr a,w,b,v) =
- begingroup;
- draw_brush(a,w,b,v);
- penlabels(3,4,5,6);
- endgroup;
+def brush (expr a, w, b, v) =
+begingroup;
+ draw_brush (a, w, b, v);
+ penlabels (3, 4, 5, 6);
+endgroup;
enddef;
+
%
% Draw a (rest) crook, starting at thickness STEM in point A,
-% ending a ball W to the left, diameter BALLDIAM
-% ypart of the center of the ball is BALLDIAM/4 lower than ypart A
+% ending a ball W to the left, diameter BALLDIAM.
+% ypart of the center of the ball is BALLDIAM/4 lower than ypart A.
%
-def balled_crook(expr a, w, balldiam, stem) =
+
+def balled_crook (expr a, w, balldiam, stem) =
begingroup;
- save x,y;
- penpos1(balldiam/2,-90);
- penpos2(balldiam/2,0);
- penpos3(balldiam/2,90);
- penpos4(balldiam/2,180);
- x4r=xpart a-w; y3r=ypart a+balldiam/4;
- x1l=x2l=x3l=x4l;
- y1l=y2l=y3l=y4l;
- penpos5(stem,250);
- x5=x4r+9/8balldiam; y5r=y1r;
- penpos6(stem,260);
- x6l=xpart a; y6l=ypart a;
- penstroke z1e..z2e..z3e..z4e..z1e..z5e{right}..z6e;
- penlabels(1,2,3,4,5,6);
+ save x, y;
+
+ penpos1 (balldiam / 2, -90);
+ penpos2 (balldiam / 2, 0);
+ penpos3 (balldiam / 2, 90);
+ penpos4 (balldiam / 2, 180);
+
+ x4r = xpart a - w;
+ y3r = ypart a + balldiam / 4;
+ x1l = x2l = x3l = x4l;
+ y1l = y2l = y3l = y4l;
+
+ penpos5 (stem, 250);
+ x5 = x4r + 9/8 balldiam;
+ y5r = y1r;
+
+ penpos6 (stem, 260);
+ x6l = xpart a;
+ y6l = ypart a;
+
+ penstroke z1e
+ .. z2e
+ .. z3e
+ .. z4e
+ .. z1e
+ .. z5e{right}
+ .. z6e;
+
+ penlabels (1, 2, 3, 4, 5, 6);
endgroup;
enddef;
def y_mirror_char =
currentpicture := currentpicture yscaled -1;
- set_char_box(charbp, charwd, charht, chardp);
+
+ set_char_box (charbp, charwd, charht, chardp);
enddef;
def xy_mirror_char =
currentpicture := currentpicture scaled -1;
- set_char_box(charwd, charbp, charht, chardp);
+
+ set_char_box (charwd, charbp, charht, chardp);
enddef;
-
+
%
-% center_factor: typically .5, the larger, the larger the radius of the bulb
+% center_factor: typically .5; the larger, the larger the radius of the bulb
% radius factor: how much the bulb curves inward
%
-def draw_bulb(expr turndir, zl, zr, bulb_rad, radius_factor)=
- begingroup;
+
+def draw_bulb (expr turndir, zl, zr, bulb_rad, radius_factor)=
+begingroup;
+ save rad, ang, pat;
+ path pat;
+
clearxy;
- save rad, ang;
- ang = angle(zr-zl);
+ ang = angle (zr - zl);
% don't get near infinity
- %z0 = zr + bulb_rad * (zl-zr)/length(zr -zl);
- z0 = zr + bulb_rad /length(zr -zl) * (zl-zr);
+ % z0 = zr + bulb_rad * (zl - zr) / length (zr - zl);
+ z0' = zr + bulb_rad / length (zr - zl) * (zl - zr);
+
+ rad = bulb_rad;
- rad = bulb_rad;
+ z1' = z0' + radius_factor * rad * dir (ang + turndir * 100);
+ z2' = z0' + rad * dir (ang + turndir * 300);
- 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 -- cycle;
+ labels (0', 1', 2');
- endgroup
+ 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