编辑代码

class Shape {
//名称
var name :String?
//边数
var sides : Int?
//左上角的位置坐标
var origin : CGPoint?
//线条颜色
var lineColor : UIColor = UIColor.red
//填充颜色
var fillColor : UIColor = UIColor.green
//线条宽度
var lineWidth :CGFloat = 2
//构造器函数init
init(name:String, sides:Int,origin :CGPoint) {
self.name = name 
self.sides = sides
self.origin = origin
}
//自定义方法 
func sayHello() {
print("Shape is \(name!),sides \(sides!), and originCord is(\(origin!.x),\(origin!.y)) ")
}
}