% Copyright (C) 1991 Silvio Levy % % This file 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 2 of the License, or % (at your option) any later version. % % This file 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 this program. If not, see . % % As a special exception, if you create a document which uses this font, % and embed this font or unaltered portions of this font into the % document, this font does not by itself cause the resulting document to % be covered by the GNU General Public License. This exception does not % however invalidate any other reasons why the document might be covered % by the GNU General Public License. If you modify this font, you may % extend this exception to your version of the font, but you are not % obligated to do so. If you do not wish to do so, delete this exception % statement from your version. if unknown gen_sigma : readfrom("gen_sigma") fi def dims = 9u#,asc_height#,desc_depth# enddef; def ital = 0 enddef; def fit_params = 0,0 enddef; def gen_letter= pickup fine.nib; numeric thin_stem; thin_stem=.6[hair,stem]; %for upper bowl numeric tilt; tilt=min(2*otilt,.5); %for both bowls pos1(stem,180); y1-.5stem=-d-o; %bottom left pos2(hair,180); y2=.5bar_height; %self-intersection (cf. z15) x1=x2; lft x1r=hround(.75u+.5(hair-stem)); %i.e., lft x2r ~ .75u x3r=x2r; %beginning of curve top y5r=h+oo; bot y14r=-oo; x5r=x14r; %top and bottom bulges top y10r=vstem+bot y9r=x_height; x9r=x10r; %top and bottom of cusp rt x12r=hround(w-.75u); %lower right bulge x5r=.5[lft x2r,rt x12r]; x9r-.5vstem=hround(x5r-.5u-.5vstem); % we want to simulate the following relations, to make slopes consistent % (where z7 is the upper right bulge): % z5r-z3r=whatever*(z9r-z7r)=whatever*(z14r-z12r); % z7r-z5r=whatever*(z12r-z10r)=whatever*(z5r-z3r) yscaled -1; numeric slope; slope=((y10r-y12r)+(y12r-y14r))/((x12r-x10r)+(x12r-x14r)); z7'r=z9r+whatever*(1,slope); z7'r=z5r+whatever*(1,-slope); y7r=y7'r; rt x7r=hround rt x7'r; z12r=z14r+whatever*(1,slope); z3r=z5r+whatever*(1,slope); filldraw double_circ_stroke gr_arc.e(7,6,5)(hair,thin_stem,tilt).. gr_arc.e(5,4,3)(hair,thin_stem,tilt)..{down}z2e..z1e; %top and left z2=z15; pos15(hair,slope-90); %intersection pt numeric slope; slope=angle((z14r-z15)yscaled 2); filldraw stroke z15e{dir slope}...gr_arc.e(14,13,12)(hair,stem,tilt); %bottom forsuffixes e=r,l: path curv[]e; numeric S[]e; curv1e=reverse gr_arc.e(9,8,7)(hair,thin_stem,tilt); %cusp bottom curv2e=gr_arc.e(12,11,10)(hair,stem,tilt); endfor %cusp top (S1r,S2r)=curv1r intersectiontimes curv2r; (whatever,S2l)=curv1r intersectiontimes curv2l; (S1l,whatever)=curv1l intersectiontimes curv2r; if S1l=-1 : S1l:=2; fi if S2l=-1 : S2l:=2; fi filldraw stroke subpath(0,S1e+eps) of curv1e; %fill in cusp filldraw stroke subpath(0,S2e+eps) of curv2e; filldraw subpath (S1r+eps,2) of curv1r...subpath(2,S2r+eps) of curv2r..cycle; enddef; cmchar "Lowercase beta"; beginchar("b",dims); this_letter; penlabels(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15); endchar; if boolean barebones: picture savedpicture; endinput; fi cmchar "Lowercase sigma followed by beta"; begindoublechar(oct"002",dim_sigma); mid_sigma; middoublechar(dims); this_letter; endchar; picture savedpicture;