---
title: "CAShapeLayer fill rules"
slug: cashapelayer-fill-rules
section: tech
date: 2016-06-02T11:38:00.000Z
canonical: https://roland.leth.ro/blog/tech/cashapelayer-fill-rules
---

I was reading [Shannon's post](http://calayer.com/core-animation/2016/05/22/cashapelayer-in-depth.html) about shape layers, and one of the resources he links to is [this page](https://www.sitepoint.com/understanding-svg-fill-rule-property/) about fill rules. It was interesting to see the inner workings of them. Go and bookmark [calayer.com](http://calayer.com), as well!