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%telspa%
% genarates characters with stripes
input telmode;
font_size 72pt#;
slant:=0;
pen_width#:=3.2pt#;
% Following code(with minor modifications) is taken from the article,
% The ABC's of Special Effects by Georgia K. M. Tobin,
% that appeared in TUGboat, Volume 9(1988), No. 1
vardef special_effects=
% creates characters filled with stripes.
cullit;
picture Normalchar;
Normalchar:=currentpicture;
clearit;
% Depending on the output device, pen size(0.28pt) may need to be
% changed.
pickup pencircle scaled 0.28pt;
filldraw (0,-d)--(w,-d)--
(w,h)--(0,h)--cycle;
picture Blackbox;
Blackbox:=currentpicture;
picture Reversevideo;
Reversevideo:=Blackbox-Normalchar;
clearit;
% Depending on the output device,stepsize(uh/3) may need to be
% changed.
for f=-d step uh/3 until h:
draw(0,f)--(w,f);
endfor;
picture Stripeoverlay;
Stripeoverlay:=currentpicture;
currentpicture:=Stripeoverlay-Reversevideo;
enddef;
input telparam;
%%
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