绘图 相关

绘图
https://www.jianshu.com/p/4e22c6ac114d iOS Quart2D绘图之UIGraphicsBeginImageContextWithOptions基础。
https://www.jianshu.com/p/960e25d72750 富文本常用封装(NSAttributedString浅析)
贝塞尔曲线 https://www.jianshu.com/p/533db5d60ed9
https://www.jianshu.com/p/646ebb8b205e iOS[QuartzCore框架]CADisplayLink篇
https://www.jianshu.com/p/9cb6656ef5d0 Quartz-2d初级
https://www.jianshu.com/p/95ecfbe7c4a8 iOS 贝塞尔曲线应用
https://www.jianshu.com/p/84e845afb1c0 贝塞尔曲线
https://www.jianshu.com/p/16ef46c14515 使用CAShapeLayer来实现圆形图片加载动画[译]
https://www.jianshu.com/p/92cb0e016650 CAShapeLayer简单使用
https://www.jianshu.com/p/042ecf9e736b 专用图层-CAShapeLayer
https://www.jianshu.com/p/eefabc2ff22d 面试-iOS图片渲染
Core graphics
https://www.jianshu.com/p/7f71c8f37ce9 Core Graphics框架 : 一个让程序猿成为视觉设计师的框架
https://www.jianshu.com/p/2a87b9e7f718 CGAffineTransformMake(a,b,c,d,tx,ty) 矩阵运算的原理
https://www.jianshu.com/p/eb6bd4b0f9a5 Quartz2D 编程指南（一）概览、图形上下文、路径、颜色与颜色空间
https://www.jianshu.com/p/6db3289fb05d CoreText实现图文混排
https://www.jianshu.com/p/e04a151ec01b Quartz2D 编程指南（三）渐变、透明层 、数据管理