% Special characters for ``extended ASCII character set'' fonts % Two accents have been copied from {\tt accent.mf} % and there's also a (genuinely) blank space. % Codes \0040, \0136, and \0176 are generated, in addition to the following: cdot=oct"000"; down_arrow=oct"001"; meet=oct"004"; false_that=oct"005"; elt=oct"006"; up_arrow=oct"013"; plus_minus=oct"014"; o_plus=oct"015"; infty=oct"016"; subset=oct"020"; superset=oct"021"; cap=oct"022"; cup=oct"023"; for_all=oct"024"; there_exists=oct"025"; o_times=oct"026"; double_arrow=oct"027"; left_arrow=oct"030"; right_arrow=oct"031"; neq=oct"032"; diamond=oct"033"; leq=oct"034"; geq=oct"035"; eqv=oct"036"; join=oct"037"; straight_quotes=oct"042"; minus=oct"055"; less=oct"074"; greater=oct"076"; backslash=oct"134"; underbar=oct"137"; left_brace=oct"173"; vertical=oct"174"; right_brace=oct"175"; integral=oct"177"; input sym; cmchar "Blank space"; beginchar(oct"040",6u#,0,0); adjust_fit(0,0); 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; 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;