@neurone error: Thank you. I don't remember exactly. I started to build this last sunday, and tested several versions. But the concept is much earlier. Anyway, you were right about something.

It looks very simple, but I could not built it without some custom-made bricks to get the right proportions.

Vasarely was born and educated in Hungary. Several of his works, including the famous Zebras, are on public places in my home town.

I've made some changes, extended the character set. Unfortunately, I could not accommodate diacritical marks at this grid size. The wide black margins have been removed. For single letters they were to enhance the contrast, improve the visual impact. However, they were too distracting for text, even for short sequences of glyphs. I hope you like the new version.

I've made another demo pic (above). For Fontstruct, it is my first GIF animation, actually. No big deal. Previously, I tried to animate the Waves , but fluid undulation effect just was not there. This one works like a clock, showing the full seconds. There is a tiny wobble I could not eliminate: the top and the bottom row of squares jumps a fraction of pixel at some frames.

Thank you for your comments and generous ratings.

@elmoyenique: So you want to show it to your students? Great idea. Please, do. You don't need my permission, it's free to use. You can take the GIF too, with the numbers. Yes, tell me about the reactions, please.

@will.i.ૐ: Thank you for your comment. The rotated squares are not exactly the same size as the aligned ones, but they are close. The diffence is approximately 3.5%, and having the rotated squares a bit smaller, actually serves as optical adjustment. I've spent a whole afternoon to find the right formula experimenting with filters and composite bricks. It should not have to be perfect, but good enough.

Skip these mundane details. (The rotated square could be dissected into a smaller square and four right triangles around it. The side of the rotated square in that case happens to be the hypotenuse of the right triangle. Here comes the Pythagorean theorem, and the problem within: the hypotenuse - equals the square root of the sum of the squares of the legs - in most cases is irrational number. In the flat world of Fontstruct, as we play with bricks, we usually deal with positive integers or fractions, all rational numbers. We can only approximate irrational numbers.)

To your second point, "how the rotated tiles articulate the diagonal strokes of your bitmap primitive": Yes, indeed. I used
Mirkwood Regular as template, but made several changes to take advantage of the strong diagonals. For the same reason, when I tested the opposite construction - aligned squares as strokes embedded in a regular pattern of rotated squares - the result was barely legible, if at all. Perhaps double lines of
of squares would help, but at what cost? Small size and simplicity matters. I also tried to make an inverse (black squares on white) version, only to realise it was not feasible with the current FS tools. Only a third kind of "opposite" made it: the rotated squares in the lower case are leaning to the opposite direction. Some diagonals benefited there too.

A gallery of favorite glyphs: good idea. In many cases a single glyph outshines the rest of the pack.

@neurone error: I'm sorry about your headache. I would not blame this op art font though, but adjust the monitor settings instead. (Setting the refresh rate at the highest possible value might help. If not, it is time to invest in a high quality LCD screen with LED backlight.)

@neurone error: I'm sorry, I completely misunderstood it. In this case, thank you for the compliment. I'm glad you like the new version.

@meek: Thank you for the special mention.

@neurone error: I'm glad you liked my font, and played with. Nice distorsion effect.

@elmoyenique: Thank you. I look forward to hear about the results.