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jscatswitch's Introduction

images

JSCatSwitch

GitHub license GitHub license CocoaPods Compatible

开始之前

所用到的类: CAGradientLayer;

  • 可以生成两个或者更多颜色平滑渐变.
  • colors : 存放渐变颜色的数组
  • locations: 渐变颜色的区间分布
  • startPoint: 映射locations中的第一个位置,用单位向量表示.
  • endpoint: 映射locations中的最后一个位置,用单位向量表示.
  • type: 默认值是kCAGradientLayerAxial,表示按像素均匀变化。除了默认值也无其它选项。

CAShapeLayer;

  • CALayer 的子类,但比CALayer更灵活,可以画出各种图形.

CAKeyframeAnimation;

  • 关键帧动画,前边博文有详细讲到,在这就不细说了.

开始画画

DrawHelper此类存放画好的path: images

JSCatSwitch此类存放layer属性: images

在点击事件里触发动画:

![images](https://raw.githubusercontent.com/Josin22/JSCatSwitch/master/Source/switch22.png)

在controller里调动: images

主要画画方法讲解

UIBezierPath 里主要方法讲解:

//画二元曲线,一般和moveToPoint配合使用

  • addQuadCurveToPoint:controlPoint;
    //以某个中心点画弧线
  • addArcWithCenter:radius:startAngle:endAngle:clockwise; //以三个点画一段曲线,一般和moveToPoint配合使用
  • addCurveToPoint:controlPoint1:controlPoint2; //根据矩形框的内切圆画曲线
  • bezierPathWithOvalInRect:

最终显示效果

images

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