User Guide

Remember that the printout you get is composed entirely of
pixels, so if we were to print now, we would get a blank
sheet because the computer hasn’t yet turned on any
pixels. That’s the hard part; drawing the “pure”
mathematical outline was easy!
The trick is to figure out, by examining the outline, which
pixels to turn on, and which to leave off. A reasonable start
is to simply turn on all the pixels which are entirely
contained by the character outline. That gives this result:
...or shrunk down to size, this:
Since that was less than an ideal “H,” we obviously need to
be more clever. Let’s try turning on all the pixels which
are mostly contained in the outline (i.e., at least half of the
pixel must be in the outline in order for it to be turned on).
That yields this result:
Fontographer User's Manual
10: Expert Advice Page #14