编辑代码

//构造器
init (name: String, origin: CGPoint, center: CGPoint, radius : CGFloat, angel
CGFloat, soundFile: String = "SO.m4a") {
    super. init (name: name, origin: origin, soundFile: soundFile)
    self.center = center
    self .radius = radius
    self.angel = angel
}
5.4.4
//
// ViewController.swift
// GeonetryBand
//
// Creared by zhifeng Chen on 2020/6/4.
// Copyright @ 2020 年 Zhifeng Chen. All rights reserved.
//


import uIkit
import Foundation 
import AVFoundation

class Shape {
    //名称
    var name : String?
    //声音播放器
    var soundPlayer : AVAudioPlayer?
    //声音文件名称
    var soundFile :String?
    //UIBezierPath
    var path : UIBezierPath?
    //selected?
    var selectedFlag : Bool = false
    //左上角的位置坐标
    var origin :CGPoint?
    var lineColor : UIColor? = UIColor.red
    var fillcolor : UIColor? = UIColor.green
    var lineWidth : CGFloat? = 5
    init(name :string,origin :CGPoint,soundFile :String - “DO.m4a“ ) {
        self.name = name
        self.origin = origin
        self.soundFile = soundFile
    }
    convenience init(origin :CGPoint)  {
        self.init(name: “Shape Bassclass“, origin: origin)
    }
    func drawBezierPath() {
        print(“Draw \(name!)“)
}
    func playAudio(){
        print("Play sound:\(soundFile!)")
        let path = Bundle.mainpath(forResource: soundfile,ofType:nil) let url=URL(fileURWithPath:path!)
        soundPlayer =try? AVAudioPlayer(contentsof: url) 
        soundPlayer?.play()
}
    func isSelected(point :CGPoint) -> Bool{
        if (path?.contains(point))! {
          selectedFlag = true
          return true
         }
        else {
          selectedFlag = false
          return false
       }
    }
}
class Line :Shape {
    var start : CGPoint?
    var end : CGPoint?
    init(name: String,origin: CGPoint,start:CGPoint,end:CGPoint,
soundFile :String-“FA.m4a“){
        super.init(name: name,origin: origin,soundfile:soundFile) 
        self.startmstart 
        self.end=end
}
    convenience init(start :CGPoint，end:CGPoint)  {
        self.init(name: “Line“, origin: start, start: start, end: end)
    }
    override func drawBezierPath(){
        print(“Draw\(name!)“)
        path = UIBezierPath()
        path?.move(to: start!)
        path?.addLine(to: end!)
        path?.lineWidth = linewidth!
        path?.lineCapStyle = .round
        lineColor?.setStroke()
        path?.stroke()
    ｝
}
class Rectangle : Shape{
    var size : CGSize?
    var corner : CGFloat?
    init(name:String,origin: CGPoint, size : CGSire, Corner : 0GFloat,soundFile :
String = "LA.mda") {
        super.init(name:Name,rigingin,soundFile:soundFile) 
        self.sizewsize
        self.corner = corner
} 
convenience init(origin: CGPoint,size :CGSize, corner : CGFloat - 0) {
        self.init(name:“Rectangle“,origin:origin,size: size,corner :corner)
    }
//重载drawBezierPath方法画矩形或者正方形
override func drawBezierPath(){
        print("Draw \(name!)"){
        path = UIBezierPath(roundedRect:CGRect(origin: originl, size
size!),cornerRadius: corner!)
   if selectedFlag {
       let dashes:[CGFloat] = [1,3]
       path?.setLineDash(dashes,count:dashes.count, phase:0)
}
      path?.lineWidth = lineWidth!
      lineColor?.setstroke()
      path?.stroke()
    }
}
class Circle : Shape {
    var center : CGPoint?
    var raduis :CGFloat?
    var size : CGSize?

init(name:String,origin:CGPoint,center:CGPoint, raduis :CGFloat,size :
CGSize,soundFile:String=“MI.m4a“){
    super.init(name: name,origin: origin,soundFile:soundfile) 
    self.center=center 
    self.raduis = raduis 
    self.size= size
    }
convenience init(center:CGPoint,raduis:CGFloat) {
    let x = center.x - raduis
    let y = center.y - raduis
    self.init(name: “Circle“,origini CGPoint(xiXry:y), center: center,
raduis: raduis, Bize: CGSize(width; raduis, height; raduia))
}
convenience init(center : CGPoint, size ： CGSize)(
    let x = center.x - size.width/2
    let y = center.y - size.height/2
    self.init(name: "Oval/Ellipse",origin: CGPoint(xix,y:y), center:
center, raduis: 0, size: size)
}
override func drawBezierPath(){
    print("Draw \(name!)")
    path=UIBezierPath(ovalIn: CGRect(origin: origin!, size: size!)) if selectedFlag {
        let dashes:[CGFloat]=[1,3]
        path?.setLineDash(dashes,count:dashes.count, phase:0)
        }
        path?.lineWidth = lineWidth！
        lineColor?.setStroke()
        path?.stroke()
        }
}
class Polygons :Shape {
    var points : Array<cgpoint>?
    init(name:String,origin:CGPoint,oints:Array<CGPoint>soundFile:String
= "RE.m4a") {
    super.init(name: name, origin: origin,soundfile: soundFile) self.points =points
convenience init(points :Array<CGPoint>){
    if points.count == 3{
        self.init(name:"Triangel", origin: points.first!, points:
points)
    }
    else if points.count >= 3 {
        self.init(name:"Polygons", origin: points.first!, points:
points)
    }
else {
    let origin =CGPoint(x: 0, y: 0)
    self.init(name:"Error",origin: origin, points: points)
    }
}
 override fune drawBezierPath(){
     print("Draw \(name!)") 
     if(name == "Error") {
         return
     }
     path = UIBezierPath()
     path?.move(to: origin!) 
     for each in points! {
         path?.addLine(to: each
         }
         path?.close()
         path?.lineWidth = lineWidth! 
         lineColor?.setStroke()
         path?.stroke() 
         path?.fill()
 }
}

class FiveStar :Shape {
    var center : CGPoint?
    var radius : CGFloat?
    var angel : CGFloat?
    init(name: String,origin: CGPoint,center:CGPoint,radius :CGFloat,angel :
CGFloat,soundFile :String="so.m4a") {
super.init(name: name, origin: origin,soundFile: soundFile) 
self.center= center 
self.radius = radius 
self.angel = angel
}
convenience init(center: CGPoint, radiun i carlont,angel : CGrloat
= 0) {
    let x = center.x - radius
    let y = center.y - radius
    selfinit(name:"FiveStar",origintCGPoint(uik,yiy), center: contei
radius: radius, angel: angel)
}
override func drawBezierPath(){
    print("Draw\(name!)")
//调用贝塞尔曲线函数UTBezierPath() 
path = UIBezierPath()
let i= 360/angel!
let xzAngle= CGFloat.pi*2/i
let xzX = (center?.x)! - sin(xzAngle)*radius! 
let xzY = (center?.y)! - cos(xzAngle)*radius! 
let p1 = CGPoint(x: xzX, y; xzY) 
path?.move(to: pl)
let angle = CGFloat.pi*4/5 
for i in 1...5 {
    let x = (center?.x)! - sin(CGFloat(i)*angle+xzAngle)*radius! 
    let y = (center?.y)! - cos(CGFloat(i)*angle+xzAngle)*radius! 
    path?.addLine(to: CGPoint(x: x,y:y))
}
path?.close()
if selectedFlag{
    let dashes:[CGFloat] = [1,3]
    path?.setLineDash(dashes,count: dashes.count, phase:0)
}
path?.lineWidth = lineWidth!
//线条颜色为 red 红色
lineColor?.setStroke()
path?.stroke()
}
}
class CzfView : UIView {
    //成员变量(属性)shapes，其类型为Array<Shape> 
    private var shapes Array<Shape>=[]
    //重载UIView的draw 方法
    override func draw( rect: CGRect){
        //调用shapes 这个数组中的每个实例的方法 
        for s in shapes {
            s.drawBezierPath()
        }
    }

//增加实例到数组shapes中 
func add(shape : Shape) {
    shapes.append(shape)
}
//触摸事件 
override func touchesBegan(_ touches : Set<UITouch>, with event:
UIEvent?)  {
    //获得UITouch集合
    let touch:UITouch = touches.first! as UITouch
    //获得触摸所在位置的坐标
    let point = touch.location(in: self)
    //调用 shapes 这个数组中的每个实例的方法 
    for s in shapes {
        //如果被选中
        if s.isSelected(point: point) {
            // 声音播放
            s.playAudio()
            //更新屏幕显示
            self.setNeedsDisplay()
        }
    }
}
}
class ViewController : UIViewController {

    override func viewDidLoad(){
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a
nib.
//此处调用FiveStar类，建立一个对象(实例)star
//五角星的中心坐标为(180,180)
let starCenter = CGPoint(x: 180, y:180)
//五角星的半径设定了 90，旋转角度为15度
let star = FiveStar(center: starCenter,radius: 50, angel: 45 
star.lineColor = UIColor.blue
//此处调用Circle 类，建立一个对象oval
let ovalCenter = CGPoint(x:100, y;300)
let ovalSize = CGSize(width: 100,height:60)
let ovalmCircle(center: ovalCenter, size: ovalSize)
//此处调用 Rectangle类，建立一个对象rect 
let rectOrigin = CGPoint(x:60,y:50)
letrectSize = GSize(width: 100,height:50) 
Let rect = Rectangle(origin:rectorigin,size:rectSize,corner:6) 
rect.lineColor = UIColorgray

//此处建立了一个Czfview的实例myview
let myView = CzfView(frame:CGRect(x:0,y:0,width: self.view.
frame.size width, height: self.viewframe.size.height))
//清除背景色
myView.backgroundColor = UIColor.clear
//赋值给myView中的成员变量(属性)shape 
myView.add(shape: star) 
myView.add(shape:oval) 
myView.add(shape:rect)
//显示myView
self.view.addSubview(myView)
    }
}