Click the green flag to start the animation. Change the slider as you please. Hide/show certain halftones using the colored buttons to the right. The halftones will stop at a certain predefined angle. Read more below. What combination of colors produce the colors red, green and blue? ●●● What Is This? ●●● Have you ever used a magnifying glass to look at printed pictures, and seen that they are actually made up of lots of tiny dots? The dots are called halftones. In offset printing, halftones of the four colors cyan, magenta, yellow and black (together called CMYK) are printed on top of each other. But to avoid moiré patterns (and overlapping dots as much as possible), they are set to different angles. This is a demonstration of one set of such angles (there are many other sets of angles one might use). Note that if the mosaic effect exceeds a certain number (depending on your screen resolution) a moiré pattern will emerge in each individual halftone. That has to do with how they are rendered by the effect and the screen - this moiré pattern does not appear in offset printing.
Read more here: https://en.wikipedia.org/wiki/Screen_angle Thanks to @kriblo for helping me fix the button bug!
