Square Face Improvements
Use a mask for the square face instead of trying to get complicated math to work reliably ;)
Also, the simulator was acting pretty wonky, so I wasn't sure what radius to use (I tried to guess by understanding the math you had, but couldn't figure it out), so I settled on 16. Feel free to adjust accordingly.
@steventroughtonsmith Now with some real math ;)
(You can use the provided functions to easily calculate where the center of a circular tick mark should be placed by drawing the appropriate CGPathRef, for instance)
i think my PR (https://github.com/steventroughtonsmith/SpriteKitWatchFace/pull/18) may fix the issue you see here https://github.com/steventroughtonsmith/SpriteKitWatchFace/pull/3#issuecomment-429009005