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Diffstat (limited to 'fonts/greek/yannis/rgrbase.mf')
-rw-r--r-- | fonts/greek/yannis/rgrbase.mf | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/fonts/greek/yannis/rgrbase.mf b/fonts/greek/yannis/rgrbase.mf new file mode 100644 index 0000000000..54a331b74f --- /dev/null +++ b/fonts/greek/yannis/rgrbase.mf @@ -0,0 +1,229 @@ +numeric grbase; grbase:=1; %don't read this file twice + +%make reference to file in subdirectories less painful +def readfrom(expr filename) = scantokens ("input " & filename); enddef; + +%we start by defining a few more font parameters: +boolean one_accent; %are we working in |one_accent|-system? +boolean monowidth; %are +boolean straight; %are certain strokes straight? +boolean italics; %are we going to make italics? +numeric univ_acc_breadth; %from 0 to 1:the breadth of the univ. accent + +let old_font_setup = font_setup; +def font_setup = +define_whole_vertical_pixels(acc_ht,circ_ht,Circ_ht,iota_dp); %accent heights +old_font_setup; +enddef; + +%Since many of our characters are composite (for instance, s+letter), +%we avoid recomputing many pictures by saving them. +%But if we're using various definitions for the same letter (as when +%running 6test.mf) we can't use this trick, so we set |working_hard:=true|. + +boolean working_hard; +working_hard:=false; + +def this_letter = +italcorr ital; adjust_fit(fit_params); +if known savedpicture: currentpicture:=savedpicture; else: gen_letter; fi +if not working_hard : picture savedpicture; savedpicture=currentpicture; fi +enddef; + +%The following routines are for use with double characters. +boolean is_double; is_double:=false; +let oldendchar=endchar; + +def begindoublechar(expr c,w_sharp,h_sharp,d_sharp) = +is_double:=true; beginchar(c,w_sharp,h_sharp,d_sharp); +enddef; + +def doublecharkern(expr k_sharp) = +if not monospace: k:=hround(k_sharp*hppp); r:=r+k; charwd:=charwd+k_sharp; fi +enddef; + +def middoublechar(expr w_sharp,h_sharp,d_sharp) = +scantokens extra_endchar; +forsuffixes e=r,l,w,charwd: numeric first.e; first.e:=e; endfor + +w:=hround(w_sharp*hppp); h:=vround(h_sharp*hppp); d:=vround(d_sharp*hppp); +charwd:=w_sharp; charht:=max(charht,h_sharp); chardp:=max(chardp,d_sharp); +picture first.glyph; first.glyph=currentpicture; +clearxy; clearpen; clearit; clearpen; +enddef; + +def endchar = +if is_double : +charwd:=first.charwd+charwd; +picture second_glyph; second_glyph=currentpicture shifted (first.r-l,0); +currentpicture:= first.glyph; addto currentpicture also second_glyph; +scantokens extra_endchar; +w:=first.w+w; r:=first.r-l+r; l:=first.l; +chardx:=first.w+w; interim xoffset:= -l; +if proofing>0: makebox(proofrule); fi +shipit; +if displaying>0: makebox(screenrule); showit; fi +endgroup; +is_double:=false +else : oldendchar +fi +enddef; + +%By convention, we reserve the name z1' for the direction at z1, and so on. +%The direction at |z1r| is |z1'r|, or |zdir1r|. +vardef zdir[]@#= z@'@# enddef; +vardef assign_z@#(expr zz)= x@#:=xpart(zz); y@#:=ypart(zz) enddef; +vardef sgn(expr x)= if (x>0): 1 elseif (x<0): -1 else: 0 fi enddef; + +vardef double_circ_stroke text t = +forsuffixes e = l,r: path_.e:=t; endfor +if cycle path_.l: errmessage "Beware: `stroke' isn't intended for cycles"; fi +path_.l .. reverse path_.r .. cycle enddef; + +vardef drawloop(suffix $,$$,@@,@)= +numeric temp[], sup; +sup=superness; +forsuffixes e=r,l: +path curv[]e; numeric S[]e; +curv1e=pulled_super_arc.e($,$$)(.5superpull); +curv2e=pulled_super_arc.e(@,@@)(.5superpull); endfor +(S1r,S2r)=curv1r intersectiontimes curv2r; +(temp1,S2l)=curv1r intersectiontimes curv2l; +(S1l,temp2)=curv1l intersectiontimes curv2r; +for i=1 upto 4: +exitif (temp1>=S1r) and (temp2>=S2r); +begingroup +numeric S[]r, S[]l, temp[]; pair p; +interim superness:=(i/10)[sup,1]; +message"change in superness required; increased to "; show superness; +curv1r:=pulled_super_arc.r($,$$)(0); +curv2r:=pulled_super_arc.r(@,@@)(0); +(S1r,S2r)=curv1r intersectiontimes curv2r; +(temp1,S2l)=curv1r intersectiontimes curv2l; +(S1l,temp2)=curv1l intersectiontimes curv2r; +endgroup; +endfor; +if S1l=-1 : S1l:=2; fi +if S2l=-1 : S2l:=2; fi +filldraw stroke subpath(0,S1e+eps) of curv1e; +filldraw stroke subpath(0,S2e+eps) of curv2e; +filldraw subpath (S1r+eps,2) of curv1r...subpath(2,S2r+eps) of curv2r..cycle; +enddef ; + +vardef gr_arc.r(suffix $,$$,$$$)(expr min,max,tilt)= +pair center, corner; +if (y$$$r-y$r)*(x$$$r-x$r) < 0 : %first or third quadrant +center=(x$$$r,y$r); corner=(x$r,y$$$r); +else : +center=(x$r,y$$$r); corner=(x$$$r,y$r); +fi +z$r{corner-z$r}...superness[center,corner]{z$$$r-z$r}... +{z$$$r-corner}z$$$r +enddef; + +vardef gr_arc.l(suffix $,$$,$$$)(expr min,max,tilt)= +save p,q,wdth; +pair center, corner, temp; +numeric wdth, t, s; +path p,q; +if (y$$$r-y$r)*(x$$$r-x$r) < 0 : %first or third quadrant +center=(x$$$r,y$r); corner=(x$r,y$$$r); +if tilt>=0 : wdth:=min; other_wdth:=max; t:=2(1-tilt); +else : wdth:=max; other_wdth:=min; t:=-2tilt; fi +else : +center=(x$r,y$$$r); corner=(x$$$r,y$r); +if tilt>=0 : wdth:=max; other_wdth:=min; t:=2(1-tilt); +else : wdth:=min; other_wdth:=max; t:=-2tilt; fi +fi +p:=z$r{corner-z$r}...superness[center,corner]{z$$$r-z$r}... +{z$$$r-corner}z$$$r; +pos$$(wdth,angle direction t of p - 90); +z$$r=point t of p; +assign_z$$'l(direction t of p); +assign_z$$'r(z$$'l); +if other_wdth<=currentbreadth: errmessage "bad pos"; fi +temp:=point (2-t) of p- +(other_wdth-currentbreadth,0) rotated (angle direction (2-t) of p - 90); +boolean k[]; k1:=false; k2:=false; +if unknown x$l: +k1:=true; +assign_z$l(temp); +assign_z$'l(direction(2-t) of p); +if (y$$$r-y$r)*(x$$$r-x$r) < 0 : %first or third quadrant +y$l:=2ypart center-y$l; +x$'l:=-x$'l; +else: +x$l:=2xpart center-x$l; +y$'l:=-y$'l; +fi +fi +if unknown x$$$l: +k2:=true; +assign_z$$$l(temp); +assign_z$$$'l(direction(2-t) of p); +if (y$$$r-y$r)*(x$$$r-x$r) < 0 : %first or third quadrant +x$$$l:=2xpart center-x$$$l; +y$$$'l:=-y$$$'l; +else: +y$$$l:=2ypart center-y$$$l; +x$$$'l:=-x$$$'l; +fi +fi +q:=z$l{z$'l}...z$$l{z$$'l}...z$$$l{z$$$'l}; +if k1 : +t := xpart(q intersectiontimes (center---z$r)); +if t=-1 : t:=0; fi +assign_z$l(point t of q); +assign_z$'l(direction t of q); +assign_z$'r(corner-z$r); +z$l+z$r=2z$; +else: t:=0; +fi +if k2 : +s := xpart(q intersectiontimes (center---z$$$r)); +if s=-1 : s:=2; fi +assign_z$$$l(point s of q); +assign_z$$$'l(direction s of q); +assign_z$$$'r(z$$$r-corner); +z$$$l+z$$$r=2z$$$; +else: s:=2; +fi +subpath (t,s) of q +enddef; + +vardef doodah(suffix $,$$,$$$)= +if known x$$: +vardef ward(expr gr)= +sgn(xpart direction 1 of (z${zdir$}..(x$$,gr)..{zdir$$$}z$$$)) <> sgn(x$-x$$) +enddef; +y$$=solve ward(y$,y$$$); +else: +vardef ward(expr gr)= +sgn(ypart direction 1 of (z${zdir$}..(gr,y$$)..{zdir$$$}z$$$)) <> sgn(y$-y$$) +enddef; +x$$=solve ward(x$,x$$$); +fi +(z${zdir$}..z$$..{zdir$$$}z$$$) +enddef; + +forsuffixes e=r,l: +vardef club.e(suffix $,$$,$$$)= doodah($e,$$e,$$$e) enddef; endfor + +vardef alpha_tail(suffix $,$$) = +pos$$(hair,180); top y$$=vround 4/3[bot y$l,top y$r]; %tip of hook +rt x$$l=hround(x$+(y$$-y$)+.5hair); %central arc is round +enddef; + +vardef pi_bar = +pos3(vstem,-90); rt x3=hround(w-.75u); top y3l=x_height; %top right +pos2(vstem,-90); y2=y3; x2=.25w; %top left +x1-.5hair=hround.75u; y1-.5hair=4/3[top y2l,bot y2r]; %tip of bar +numeric slope; slope=angle((z2-z1)yscaled 2); pos1(hair,slope-90); +forsuffixes e=l,r: z1'e=(z2e-z1e)yscaled 2; endfor +filldraw circ_stroke z1e{z1'e}...z2e---z3e; %bar +enddef; + +def traba(expr poso) = transform t; t = identity shifted (poso,0); +currentpicture := currentpicture transformed t; +enddef; + |