On 23 Nov 2004, Thomas Esser wrote:
> On Tue, Nov 23, 2004 at 02:15:51PM -0800, Walker Pendleton wrote:
>> /var/cache/fonts/tfm/local/io/io.tfm, and I put io.2600pk in
> ...
>> But dvilj4 doesn't seem to find the io.2600pk file, and I don't
>> know
>
> dvilj4 works with 600dpi. So, I guess that you should generate your io
> font for mode ljfour, not proofmode.
>
> Thomas
My mistake: typo in the email. The pk file is actually named
"io.2400pk". In the exercise, calls for mode "localfont", and
"mag=4". "\mode=ljfour" also produces these "io.2400pk" files,
because 600 * 4 = 2400.
Allow me to explain Knuth's exercise:
The io.mf file from the exercise seems to be included in teTeX's own
texmf/metafont/base/io.mf file. Knuth instructs you to type a bit
more at the terminal, so you end up with:
%this first line entered on the terminal:
\mode=localfont; mag=4; % and then "input io.mf"
mode_setup;
em#:=10pt#; cap#:=7pt#;
thin#:=1/3pt#; thick#:=5/6pt#;
o#:=1/5pt#;
define_pixels(em,cap);
define_blacker_pixels(thin,thick);
define_corrected_pixels(o);
curve_sidebar=round 1/18em;
beginchar("O",0.8em#,cap#,0); "The letter O";
penpos1(thick,10); penpos2(.1[thin,thick],90-10);
penpos3(thick,180+10); penpos4(thin,270-10);
x1l=w-x3l=curve_sidebar; x2=x4=.5w;
y1=.49h; y2l=-o; y3=.51h; y4l=h+o;
penstroke z1e{down}..z2e{right}
..z3e{up}..z4e{left}..cycle;
penlabels(1,2,3,4); endchar;
def test_I(expr code,trial_stem,trial_width) =
stem#:=trial_stem*pt#; define_blacker_pixels(stem);
beginchar(code,trial_width*em#,cap#,0); "The letter I";
penpos1(stem,15); penpos2(.9stem,12); penpos3(stem,10);
x1=x2=x3=.5w; y1=h; y2=.55h; y3=0; x2l:=1/6[x2l,x2];
penstroke z1e..z2e{down}..z3e;
penlabels(1,2,3); endchar; enddef;
% Here's the terminal-entered bit
code=100;
for s=7 upto 10:
for w=5 upto 8:
test_I(incr code,s/10,w/20);
endfor endfor end.
And then you start "tex", & have a conversation with it, at the
terminal, which goes something like:
[TeX prompts with "**"]testfont
[TeX chats, you type:]
io scaled 4000
[TeX prompts with "*"]\mixture
[TeX asks for "background character"]O
[TeX asks for "starting character"]e
[TeX asks for "ending character"]t
[TeX prompts with "*"]\end
...which then leaves you with a testfont.dvi that I can't print with
dvilj.
