%
% source file of LilyPond's pretty-but-neat music font
%
-% (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
-% & Han-Wen Nienhuys <hanwen@stack.nl>
+% (c) 1997--2003 Jan Nieuwenhuizen <janneke@gnu.org>
+% & Han-Wen Nienhuys <hanwen@cs.uu.nl>
%
+% see Documentation/fonts.tex
% mode_setup;
%% staffsize#=16pt#;
-% interline#:=staffsize#/4;
-% stafflinethickness#:=0.1interline#;
+% staff_space#:=staffsize#/4;
+% stafflinethickness#:=0.1staff_space#;
pi:=3.14159;
(angle(1,x)*pi/180)
enddef;
-%breapth, width, depth, height
-
-% urgh
-% having mf would be nice if only from a "use the source" point of view.
-%
-% getslurcontrol:
-% slurhtlimit 90 div /slur_alpha exch def
-% slurratio 60 div slur_alpha div /slur_beta exch def
-% slur_beta mul 1 atan slur_alpha mul
-%
-% draw_slur:
-% slur_b getslurcontrol
-% slur_dir mul /slur_ht exch def
-% slur_b getslurcontrol /slur_indent exch def
-%
sleur_pen#:=stafflinethickness#;
slurheightlimit#:=staffsize#/2;
-% staffrulethickness 1.5 mul /slur_thick exch def
-slurthick#:=3/2stafflinethickness#;
+slurthick#:=1.8stafflinethickness#;
-define_pixels(staffsize,interline,stafflinethickness);
+define_pixels(staffsize,staff_space,stafflinethickness);
define_pixels(sleur_pen,slurheightlimit,slurthick);
-sluralpha:=slurheightlimit#*pi/2;
-% slurratio:=1/3;
-slurratio:=0.3333;
-slurbeta:=3/4*pi*slurratio/sluralpha;
+sluralpha:=2slurheightlimit#/pi;
+slurratio:=1/3;
+slurbeta:=pi*slurratio/2slurheightlimit#;
def draw_slur(expr dxs,dys,hs,d) =
save x, y;
h#:=hs*1pt#;
define_pixels(dx,dy);
b#:=length(dx#,dy#);
- % ugh: huh? 2/5
- indent#:=2/5*sluralpha*atan(slurbeta*b#);
+ indent#:=sluralpha*atan(slurbeta*b#);
define_pixels(b,h,indent);
height:=(indent+h)*d;
z1=(0,0);
boogje:=boogje rotated angle(dxs,dys);
pickup pencircle scaled sleur_pen;
filldraw boogje;
- show z1;
- show z2;
- show z3;
- show z4;
- show z5;
- show z6;
-enddef;
-
-def slurchar(expr dxs,dys,hs,d) =
- beginchar(0,0,0,0) "Embedded mf";
- draw_slur(dxs,dys,hs,d);
- endchar;
enddef;
-% drawslur(10,10,0,1);