% THIS IS THE OFFICIAL COMPUTER MODERN SOURCE FILE accent.mf BY D E KNUTH.
% IT MUST NOT BE MODIFIED IN ANY WAY UNLESS THE FILE NAME IS CHANGED!

% This file contains accents common to text roman and italic fonts.
% Character codes \0022--\0030, \0040, \0136--\0137, \0175--\0177 are generated.

% (Actually the accents in positions \0040, \0137, and \0175 are not generated
% unless |ligs>0|, since other symbols are substituted
% for those accents in non-ligature fonts.)

cmchar "Grave accent";
beginchar(oct"022",9u#,min(asc_height#,2x_height#),0);
adjust_fit(0,0);
if serifs: pickup crisp.nib; x1-.5stem=hround 2u; x2=2/3[x1,w-x1];
 y1+.5stem=h+eps; y2=max(2/3[h,x_height],x_height+o+hair);
 numeric theta; theta=angle(z2-z1)+90;
 pos1(stem,theta); pos2(hair,theta);
 filldraw circ_stroke z1e--z2e;  % diagonal
else: pickup fine.nib; pos1(stem,0); pos2(vair,0);
 lft x1l=hround 1.5u; rt x2r=hround(.5w+.25u+.5vair);
 top y1=h; bot y2=vround 2/3[h,x_height];
 filldraw stroke z1e--z2e; fi  % diagonal
penlabels(1,2); endchar;

cmchar "Acute accent";
beginchar(oct"023",9u#,min(asc_height#,2x_height#),0);
italcorr h#*slant-if serifs: 1.5 fi u#;
adjust_fit(0,0);
if serifs: pickup crisp.nib; x1+.5stem=hround(w-2u); x2=2/3[x1,w-x1];
 y1+.5stem=h+eps; y2=max(2/3[h,x_height],x_height+o+hair);
 numeric theta; theta=angle(z2-z1)+90;
 pos1(stem,theta); pos2(hair,theta);
 filldraw circ_stroke z1e--z2e;  % diagonal
else: pickup fine.nib; pos1(stem,0); pos2(vair,0);
 rt x1r=hround(w-1.5u); lft x2l=hround(.5w-.25u-.5vair);
 top y1=h; bot y2=vround 2/3[h,x_height];
 filldraw stroke z1e--z2e; fi  % diagonal
penlabels(1,2); endchar;

cmchar "Hachek (check) accent";
beginchar(oct"024",9u#,.75[x_height#,min(asc_height#,2x_height#)],0);
h':=vround min(asc_height,2x_height); % height of circumflex being inverted
if serifs: italcorr h#*slant+.5hair#-1.75u#;
 adjust_fit(0,0);
 pickup crisp.nib; pos2'(.5[vair,curve],90); top y2'r=h;
 pos2(.5[vair,curve],90); x2=.5w;
 x1=w-x3=good.x 2.25u; top y1=top y3=h; y1-y2=.5(y2'-x_height);
 pos1(hair,angle(z2-z1)+90); pos3(hair,angle(z3-z2)+90);
 filldraw stroke z1e--z2e--z3e;  % diagonals
else: italcorr h#*slant-.5stem#+.5vair#-.75u#;
 adjust_fit(0,0);
 pickup fine.nib; pos1(vair,0); pos3(vair,0); x1=w-x3;
 pos2(stem,0); bot y2=vround(1/12[x_height,h']+o); x2=.5w;
 top y1=top y3=h+o; lft x1l=hround(rt x2r-3.25u-.5vair);
 z0=whatever[z1r,z2r]=whatever[z2l,z3l];
 y4l=y4r=y2; x4l=good.x .2[x2l,x2]; x4r=w-x4l;
 filldraw z4l--z1l--z1r--z0--z3l--z3r--z4r--cycle; fi  % diagonals
penlabels(0,1,2,3,4); endchar;

cmchar "Breve accent";
beginchar(oct"025",9u#,min(asc_height#,2x_height#),0);
italcorr h#*slant+.5vair#-1.5u#;
adjust_fit(0,0);
pickup crisp.nib; pos1(vair,-180); pos3(vair,0);
top y1=top y3=h; lft x1r=w-rt x3r=hround(2u-.5vair);
numeric mid_thickness; mid_thickness=vround 1/3[vair,stem];
pos2(mid_thickness,-90); x2=.5w;
bot y2r=vround max(x_height+o+tiny,1/3[x_height,h]+o-.5mid_thickness);
filldraw stroke z1e{down}...z2e{right}...{up}z3e;  % stroke
penlabels(1,2,3); endchar;

cmchar "Macron (bar) accent";
numeric macron_breadth#; macron_breadth#=.2[vair#,stem#];
beginchar(oct"026",9u#,.4[x_height#,asc_height#]+macron_breadth#,0);
italcorr h#*slant-.75u#;
adjust_fit(0,0);
numeric macron_breadth; macron_breadth:=Vround .2[vair,stem];
pickup if serifs: crisp.nib else: fine.nib fi;
pos1(macron_breadth,90); pos2(macron_breadth,90);
top y1r=top y2r=h+o; lft x1=w-rt x2=hround 1.25u;
filldraw stroke z1e--z2e;  % bar
penlabels(1,2); endchar;

cmchar "Scandinavian circle accent";
beginchar(oct"027",13u#+4/3(asc_height#-x_height#)*slant,asc_height#,0);
adjust_fit(cap_serif_fit#,cap_serif_fit#);
numeric circ_hair,circ_vair;
circ_hair=hround min(hair,u+.5); circ_vair=vround min(vair,(h-x_height)/6+.5);
penpos1(circ_vair,90); penpos3(circ_vair,-90);
penpos2(circ_hair,180); penpos4(circ_hair,0);
x2r=hround(.5w-1.5u-.5circ_hair);
x4r=w-x2r; x1=x3=.5w; y1r=h+apex_o; y2=y4=.5[y1,y3];
y3r=vround(1/3[x_height,h]+apex_o);
penstroke pulled_arc.e(1,2) & pulled_arc.e(2,3)
 & pulled_arc.e(3,4) & pulled_arc.e(4,1) & cycle;  % bowl
penlabels(1,2,3,4); endchar;

cmchar "Cedilla accent";
beginchar(oct"030",8u#,0,.875desc_depth#);
adjust_fit(0,0);
x1=.5w+.5u;
if serifs: pickup crisp.nib; pos1(stem,0); pos2(stem,0);
 pos3(vair,90); pos4(stem,0); pos5(vair,-90);
 x1=x2; z3l=z2l; x4=x2+1.5u; x5=x3-1.5u;
 bot y1=-o; bot y2=-vround 2/7d-o; y4=.5[y3,y5]; bot y5=-d-o;
 filldraw stroke z1e--z2e;  % stem
 filldraw stroke z3e{right}...z4e{down}...{left}z5e;  % hook
else: pickup fine.nib; pos1(vair,0); top y1=-o-2;
 pos2(.5[vair,stem],0); bot y2=-d-o; x2=x1-1.25u;
 filldraw stroke z1e--z2e; fi  % diagonal
penlabels(1,2,3,4,5); endchar;

iff ligs>0: cmchar "Cross for Polish l and L";
if unknown l_width#:
 l_width#:=5u#+2serif_fit#; fi  % nominal width of `l'
if unknown L_stem#:
 L_stem#:=cap_serif_fit#+max(2u#+.5cap_stem#,3u#); fi  % center of `L' stem
ligtable oct"040": "l" kern -l_width#-2letter_fit#,
 "L" kern -.5l_width#-L_stem#-2letter_fit#;
beginchar(oct"040",l_width#,x_height#,0);
adjust_fit(stem_shift#,-stem_shift#);
pickup crisp.nib; x2-x1=max(4u,2.8u+stem); .5[x1,x2]=.5w;
y1-.5bar=.2[bar_height,x_height]; y2+.5bar=.8[bar_height,x_height];
numeric theta; theta=angle(z2-z1)+90;
pos1(bar,theta); pos2(bar,theta);
filldraw stroke z1e--z2e;  % diagonal
penlabels(1,2); endchar;

cmchar "Circumflex (hat) accent";
beginchar(oct"136",9u#,min(asc_height#,2x_height#),0);
if serifs: italcorr .5[x_height#,h#]*slant+.5hair#-1.75u#;
 adjust_fit(0,0);
 pickup crisp.nib; pos2(.5[vair,curve],90); top y2r=h; x2=.5w;
 x1=w-x3=good.x 2.25u; y1=y3=.5[x_height,y2];
 pos1(hair,angle(z2-z1)+90); pos3(hair,angle(z3-z2)+90);
 filldraw stroke z1e--z2e--z3e;  % diagonals
else: italcorr 2/3[x_height#,h#]*slant-.5stem#+.5vair#-.75u#;
 adjust_fit(0,0);
 pickup fine.nib; pos1(vair,0); pos3(vair,0); x1=w-x3;
 pos2(stem,0); top y2=h; x2=.5w; bot y1=bot y3=vround 2/3[h,x_height]-eps;
 lft x1l=hround(rt x2r-3.25u-.5vair); % same slope as in the acute accent
 z0=whatever[z1r,z2r]=whatever[z2l,z3l];
 y4l=y4r=y2; x4l=good.x .2[x2l,x2]; x4r=w-x4l;
 filldraw z4l--z1l--z1r--z0--z3l--z3r--z4r--cycle; fi  % diagonals
penlabels(0,1,2,3,4); endchar;

iff ligs>0: cmchar "Dot accent";
numeric dot_diam#; dot_diam#=max(dot_size#,cap_curve#);
beginchar(oct"137",5u#,min(asc_height#,10/7x_height#+.5dot_diam#),0);
define_whole_blacker_pixels(dot_diam);
italcorr h#*slant+.5dot_diam#-2u#;
adjust_fit(0,0);
pickup tiny.nib; pos1(dot_diam,0); pos2(dot_diam,90);
x1=x2=.5w; top y2r=h+1;
if bot y2l<x_height+o+slab: y2l:=min(y2r-eps,x_height+o+slab+.5tiny); fi
y1=.5[y2l,y2r]; dot(1,2);  % dot
penlabels(1,2); endchar;

iff ligs>0: cmchar "Long Hungarian umlaut accent";
beginchar(oct"175",9u#,min(asc_height#,2x_height#),0);
italcorr h#*slant-u#;
adjust_fit(0,0);
x3-x1=x4-x2=hround 3u; y3=y1; y4=y2;
if serifs: pickup crisp.nib; x3+.5stem=hround(w-1.5u); x2=2.5u;
 y1+.5stem=h; y2=max(2/3[h,x_height],x_height+o+hair);
 numeric theta; theta=angle(z2-z1)+90;
 pos1(stem,theta); pos2(hair,theta);
 pos3(stem,theta); pos4(hair,theta);
 filldraw circ_stroke z1e--z2e;  % left diagonal
 filldraw circ_stroke z3e--z4e;  % right diagonal
else: pickup fine.nib; pos1(stem,0); pos2(vair,0);
 pos3(stem,0); pos4(vair,0);
 rt x3r=hround(w-1.5u); lft x4l=hround(.5w+u-.5vair);
 top y1=h; bot y2=vround 2/3[h,x_height];
 filldraw stroke z1e--z2e;  % left diagonal
 filldraw stroke z3e--z4e; fi  % right diagonal
penlabels(1,2,3,4); endchar;

cmchar "Tilde (squiggle) accent";
beginchar(oct"176",9u#,min(asc_height#,10/7x_height#+.5dot_size#),0);
italcorr h#*slant-u#;
adjust_fit(0,0);
if serifs: numeric theta; theta=angle(1/6(6u-vair),1/4(h-x_height));
 pickup crisp.nib; numeric mid_width; mid_width=.4[vair,stem];
 pos1(vair,theta+90); pos2(vair,theta+90);
 pos3(vair,theta+90); pos4(vair,theta+90);
 z2-z1=z4-z3=(mid_width-crisp)*dir theta;
 lft x1r=w-rt x4l=hround 1.5u; top y4r=h;
 bot y1l=vround(bot y1l+min(2/3[x_height,h],y3l-.25vair)-top y1r);
 pair delta; ypart delta=3(y3l-y1l); delta=whatever*dir theta;
 filldraw z1l..controls(z1l+delta)and(z3l-delta)..z3l..z4l
  --z4r..controls(z4r-delta)and(z2r+delta)..z2r..z1r--cycle;  % stroke
else: pickup fine.nib; pos1(vair,180); pos2(vair,90);
 pos3(.5[vair,slab],90); pos4(vair,90); pos5(vair,180);
 lft x1r=w-rt x5l=hround 1.5u; x2-x1=x3-x2=x4-x3=x5-x4;
 bot y1=bot y4l=vround(.75[x_height,h]-vair);
 top y2r=top y5=h; y3=.5[y2,y4];
 filldraw stroke z1e{up}...z2e{right}..z3e..{right}z4e...{up}z5e; fi % stroke
penlabels(1,2,3,4,5); endchar;

cmchar "Umlaut (double dot) accent";
numeric dot_diam#,dot_diam;
dot_diam#=max(dot_size#,cap_curve#);
beginchar(oct"177",9u#,min(asc_height#,10/7x_height#+.5dot_diam#),0);
dot_diam=max(tiny.breadth,hround(max(dot_size,cap_curve)-2stem_corr));
italcorr h#*slant+.5dot_diam#-2.25u#;
adjust_fit(0,0);
pickup tiny.nib; pos1(dot_diam,0); pos2(dot_diam,90);
x1=x2=2.75u; top y2r=h+1;
if bot y2l<x_height+o+slab: y2l:=min(y2r-eps,x_height+o+slab+.5tiny); fi
y1=.5[y2l,y2r]; dot(1,2);  % left dot
pos3(dot_diam,0); penpos4(y2r-y2l,90); y3=y4=y1; x3=x4=w-x1;
dot(3,4);  % right dot
penlabels(1,2,3,4); endchar;
