The op-art patterns of the Parallax series are not unheard of in the crafting world. However, they’re far more common in quilting and weaving than in knitting -- presumably because in order to be really bold and striking, the patterns need a higher resolution. At the higher resolution, the larger squares would require long floats which are certainly possible but impractical. And don’t even get me started on thinking about doing one of these patterns in intarsia.
The Parallax patterns look very complicated at first glance. However, they’re quite a bit simpler than most other double-knitting. If you look at the gridwork they’re created from, you’ll notice that the color-changing happens in the same location in every row. This means that once you’ve set up the first row, the color changes will happen in the same place every single time.