Tutorial

Let's build COSMOS

Learn by doing with our C4-powered app-building tutorial. Let us walk you through the process of how we built a nice little iOS app called COSMOS.

Chapter 15

Menu Rings

Time for the ring lines, the backbone of our COSMOS radial menu.


  1. As I’m writing this I thought “why did I write it this way” but then after reading the code again I realized I had left it like this as a signal for myself to remember that the center needs to be just a little bit more than the specified 82 pt diameter from Jake’s design file. ↩︎
  2. Note that i’m implying a rotation around the z-axis, but rotations can also happen through x and y as well. ↩︎