swift 绘制、动画基础 （CAShapeLayer、CABasicAnimation）

概述//MARK: 绘制虚线 let layer0 = CAShapeLayer() layer0.strokeColor = UIColor.green.cgColor layer0.lineWidth = 0.5 //线段宽度10 间距10 let arr :NSArray = NSArray(array: [10,1

//MARK: 绘制虚线        let layer0 = CAShapeLayer()        layer0.strokecolor = UIcolor.green.cgcolor        layer0.linewidth = 0.5        //线段宽度10 间距10        let arr :NSArray = NSArray(array: [10,10])        //基于线段的起始位置        layer0.lineDashPhase = 0        layer0.lineDashPattern = arr as? [NSNumber]        self.vIEw.layer.addSublayer(layer0)        //路径        let mdotteShapePath = CGMutablePath()        mdotteShapePath.move(to: CGPoint(x:0,y: 30))        mdotteShapePath.addline(to: CGPoint(x:UIScreen.main.bounds.size.wIDth,y:30))        layer0.path = mdotteShapePath        //MARK: 实心矩形        let layer = CAShapeLayer()        layer.frame = CGRect(x:80,y:50,wIDth:150,height:50)        layer.backgroundcolor = UIcolor.green.cgcolor        vIEw.layer.addSublayer(layer)        //MARK: 矩形框        let layer1 = CAShapeLayer()        layer1.fillcolor = UIcolor.clear.cgcolor        layer1.strokecolor = UIcolor.green.cgcolor        vIEw.layer.addSublayer(layer1)        let path1 = UIBezIErPath(rect: CGRect(x:80,y:110,height:50))        layer1.path = path1.cgPath        //MARK: 圆角矩形        let path2 = UIBezIErPath(roundedRect: CGRect(x:80,y:170,height:50),cornerRadius: 50)        let layer2 = CAShapeLayer()        layer2.path = path2.cgPath        layer2.fillcolor = UIcolor.clear.cgcolor        layer2.strokecolor = UIcolor.green.cgcolor        vIEw.layer.addSublayer(layer2)        //MARK: 圆形        let radius: CGfloat = 20        let startAngle: CGfloat = 0.0        let endAngle: CGfloat = CGfloat(M_PI * 2)        let path3 = UIBezIErPath(arcCenter: vIEw.center,radius: radius,startAngle: startAngle,endAngle: endAngle,clockwise: true)        let layer3 = CAShapeLayer()        layer3.path = path3.cgPath        layer3.fillcolor = UIcolor.clear.cgcolor        layer3.strokecolor = UIcolor.green.cgcolor        vIEw.layer.addSublayer(layer3)        //MARK: 贝塞尔曲线        let startPoint = CGPoint(x:20,y:400)        let endPoint = CGPoint(x:320,y:400)        let controlPoint = CGPoint(x:170,y:300)        let controlPoint1 = CGPoint(x:120,y:300)        let controlPoint2 = CGPoint(x:220,y:500)               //曲线1        let path10 = UIBezIErPath()        let layer10 = CAShapeLayer()        path10.move(to: startPoint)        path10.addQuadCurve(to: endPoint,controlPoint: controlPoint)        layer10.path = path10.cgPath        layer10.fillcolor = UIcolor.clear.cgcolor        layer10.strokecolor = UIcolor.black.cgcolor        vIEw.layer.addSublayer(layer10)        //曲线2        let path20 = UIBezIErPath()        let layer20 = CAShapeLayer()        path20.move(to: startPoint)        path20.addCurve(to: endPoint,controlPoint1: controlPoint1,controlPoint2: controlPoint2)        layer20.path = path20.cgPath        layer20.fillcolor = UIcolor.clear.cgcolor        layer20.strokecolor = UIcolor.black.cgcolor        vIEw.layer.addSublayer(layer20)        //MARK: 动画        //动画1        let animation = CABasicAnimation(keyPath: "strokeEnd")        animation.fromValue = 0        animation.tovalue = 1        animation.duration = 2        layer10.add(animation,forKey: "")        //动画2        layer20.strokeStart = 0        layer20.strokeEnd = 1        let animation21 = CABasicAnimation(keyPath: "strokeStart")        //起始位置中间 结束为止左端        animation21.fromValue = 0.5        animation21.tovalue = 0        animation21.duration = 2        let animation22 = CABasicAnimation(keyPath: "strokeEnd")        //起始位置中间 结束为止右端        animation22.fromValue = 0.5        animation22.tovalue = 1        animation22.duration = 2        layer20.add(animation21,forKey: "")        layer20.add(animation22,forKey: "")        //动画3        let animation23 = CABasicAnimation(keyPath: "linewidth")        animation23.fromValue = 1        animation23.tovalue = 10        animation23.duration = 5        layer1.add(animation23,forKey: "")

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