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BEGIN {
sw = 40.0;
dw = 78.0;
hdw = dw / 2.0;
w = 20.0;
h =1.0;
d = 0.2;
ss="abcdefghijklmnopqrstuvwxyz0123456789!#$%^&*()-=\\[];'`,./";
rnd = srand();
}
{
xr = -hdw; y = h * 1.0; maxxl = -999;
s = "";
while (xr < hdw) {
x = xr * (1 + y) - y * w / 2;
i = (x / (1 + h) + sw /2);
c = (0 < i && i < length($0)) ? substr($0, i, 1) : "0";
y = h - d * c;
xl = xr - w * y / (1 + y);
if (xl < -hdw || xl >= hdw || xl <= maxxl) {
t = rand() * length(ss);
c = substr(ss, t, 1);
}
else {
c = substr(s, xl + hdw, 1);
maxxl = xl;
}
s = s c;
xr = xr + 1;
}
print s;
}
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