Last major update on 23.10.2013
As promised previously in my last article, I will guide you through the
creation process of a rudimentary font. I will use the glyphs of my font
to draw captchas and incorportate the implementation in my brand new
captcha plugin for wordpress. There are already quite a few captcha
plugins out there, some of them are better than mine
(RECAPTCHAfor instance translates
books and thus solves two problems at the same time),
others are worse, because the
math equations can simply be parsed (As far as I can judge without
inspecting the code further).
In this article however, I will center the focus entirely on the font
and abstract from it's future usage in the captcha.
Technical background of fonts
A logical start of font creation is to answer the question what type of
font we are going to create. But lets first introduce some concepts that
are of importance when it comes to font design.
In short: A font is a collection of glyphs. Each glyph has a shape and
there are various ways of describing that shape. You can imagine a glyph
as a instanteation of a character. Whereas …