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By Adam Wulf on December 23, 2016
UIBezierPath’s an an incredibly powerful tool for modeling complex paths and shapes in Objective-C and Swift, but it’s surprisingly difficult to perform operations on two or more paths. Applications like PaintCode make it easy to get the difference or intersection between two paths, but there are limited options for doing this on demand in code. This is particularly meaningful in drawing apps like Loose Leaf, where all of the paths are generated by the user.
By Adam Wulf on October 24, 2016
When I started working on Loose Leaf, I quickly realized that the hardest part of the app was finding a fast and efficient drawing UIView that I could add into my app. There were a fair number of tutorials that would solve the first 80%, but there was always some important pieces left as an exercise for the reader: Smooth curves, removing lag and stutter, or main-thread-blocking save/load.
By Adam Wulf on October 3, 2016