1 % Black font for Imagen with proofsheet resolution 75 pixels per inch
3 % if mode<>imagen: errmessage "This file is for imagen only"; fi
5 font_identifier "BLACKIMAGEN";
6 picture pix_picture; pix_wd := pix_ht := 8;
7 pix_picture := nullpicture;
8 addto pix_picture contour (fullcircle scaled (8*1.6) shifted (4,4));
10 %pix_picture := unitpixel scaled 4;
11 % More-or-less general gray font generator
12 % See Appendix H of The METAFONTbook for how to use it
14 forsuffixes m = mag,rep:
16 elseif (m<1) or (m<>floor m):
17 errmessage "Sorry, " & str m & " must be a positive integer";
20 mg := mag; mag := 1; mode_setup;
21 if mg>1: hppp := hppp*mg; vppp := vppp*mg;
23 "if charcode>0:currentpicture:=currentpicture scaled mg;fi"
26 if picture pix_picture: rep := 1;
27 cull pix_picture keeping (1,infinity);
28 else: for z=(0,2),(1,0),(2,3),(3,1):
29 fill unitsquare shifted z; endfor
30 if not boolean lightweight: addto currentpicture also
31 currentpicture rotated 90 xscaled -1; fi
32 if unknown scale: scale := max(1,round(pixels_per_inch/300)); fi
33 pix_wd := pix_ht := 4scale;
34 if rep>1: picture pix;
35 currentpicture := currentpicture shifted-(1,1); pix := currentpicture;
36 for r=1 upto rep-1: addto currentpicture also pix shifted(4r,0); endfor
37 cullit; pix := currentpicture;
38 for r=1 upto rep-1: addto currentpicture also pix shifted(0,4r); endfor
39 unfill unitsquare xscaled 4rep yscaled 2 shifted-(1,1);
40 unfill unitsquare yscaled 4rep xscaled 2 shifted-(1,1); cullit; fi
41 picture pix_picture; pix_picture := currentpicture scaled scale;
42 pix_wd := pix_ht := 4scale*rep; fi
44 def # = *72.27/pixels_per_inch enddef;
45 if unknown dotsize: dotsize := 2.5pix_wd/rep; fi
47 beginchar(0,1.2dotsize#,1.2dotsize#,0);
48 fill fullcircle scaled dotsize scaled mg; endchar;
50 numeric a[]; newinternal b,k;
52 k := 0; forever: if k>b: a[incr b] := 0; fi
53 exitif a[k]=0; a[k] := 0; k := k+1; endfor
55 def next_special_binary =
56 if a[0]=1: for k=0 upto b: a[k] := 0; endfor a[incr b]
57 else: k := 0; forever: exitif a[incr k]=1; endfor
58 a[k-1] fi := 1 enddef;
62 for k=0 upto b: if a[k]=1:
63 addto currentpicture also pix_picture shifted(0,-k*pix_ht); fi endfor
64 charcode := charcode+1; chardp := b*charht;
65 scantokens extra_endchar; shipout currentpicture enddef;
67 charwd := pix_wd#; charht := pix_ht#; chardx := pix_wd*mg;
70 if boolean large_pixels:
71 for k=1 upto 7: make_char; charlist k:k+120; endfor
72 charcode := 120; b := -1;
73 addto pix_picture also pix_picture shifted (chardx,0);
74 charwd := 2charwd; chardx := 2chardx;
75 for k=1 upto 7: make_char; endfor
76 else: for k=1 upto 63: make_char; endfor
77 let next_binary = next_special_binary;
78 for k=64 upto 120: make_char; endfor
79 for k=121,122: charcode := k;
80 addto currentpicture also currentpicture shifted (chardx,0);
81 charwd := 2charwd; chardx := 2chardx;
82 scantokens extra_endchar; shipout currentpicture; endfor
83 charlist 120:121:122; fi
85 font_coding_scheme "GFGRAY";
87 font_normal_space pix_wd#;
88 font_x_height pix_ht#;
90 fontdimen 8: if known rulethickness: rulethickness
91 else: pix_wd#/(2rep) fi;