分割的圆形的UIView到5条相等角件

Question

我有程序创建这样一个UIView：

forecastWeatherWheel.backgroundColor = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: 0.1) 
    forecastWeatherWheel.frame = CGRect(x: -(dailyWeatherContainer.frame.width + 100)/2, 
             y: self.view.bounds.height/2 - ((dailyWeatherContainer.frame.height + 100)/2), 
             width: dailyWeatherContainer.frame.width + 100, 
             height: dailyWeatherContainer.frame.height + 100) 
    forecastWeatherWheel.layer.cornerRadius = forecastWeatherWheel.bounds.size.width/2 
    forecastWeatherWheel.translatesAutoresizingMaskIntoConstraints = false 
    self.view.addSubview(forecastWeatherWheel) 

我需要添加（再次编程）5子视图此UIView的。 我努力寻找subViews的锚点的坐标。

思考成度，我圈出来的superView必须分成72°，每个相等的部分，边界的坐标必须是我的子视图的锚点。

事情是这样的：

Answer 1

像这样（从顶部开始和去顺时针）：

let radius: Double = 100 
let cx: Double = 0 
let cy: Double = 0 
for deg in stride(from: 90, to: -269, by: -72) { 
    let a = Double(deg)*M_PI/180 
    let x = cx + radius * cos(a) 
    let y = cy + radius * sin(a) 
    print("Angle \(a): \(x), \(y)") 
}