//
//  IndicatorView.swift
//  PaiAi-Guide
//
//  Created by mac on 2016/12/13.
//  Copyright © 2016年 mac. All rights reserved.
//

import UIKit

class IndicatorView: UIView {

    let color = UIColor(red: 55.0/255, green: 236.0/255, blue: 102.0/255, alpha: 1)
    var repeatCount: Float = 3
    var lineColor = UIColor(red: 0, green: 165.0/255, blue: 0, alpha: 1)
    var lineWidth: CGFloat = 1.0
    let anmiation = CABasicAnimation(keyPath: "transform.rotation.z")

    override func draw(_ rect: CGRect) {
        self.cornerRadius = self.frame.height / 2
        let context = UIGraphicsGetCurrentContext()
        for i in 0..<181 {
            let shadowColor = color.withAlphaComponent(CGFloat(i) / 500.0).cgColor
            context?.setFillColor(shadowColor)
            context?.move(to: CGPoint(x: self.center.x, y: self.center.y))
            context?.addArc(center: CGPoint(x: self.center.x, y: self.center.y), radius: self.frame.height / 2, startAngle: (-180 + CGFloat(i)) / 180 * .pi, endAngle: (-180 + CGFloat(i) - 1) / 180 * .pi, clockwise: true)
            context?.closePath()
            context?.drawPath(using: .fill)
        }
        context?.setStrokeColor(color.withAlphaComponent(0.9).cgColor)
        context?.move(to: CGPoint(x: self.center.x, y: self.center.y))
        context?.addLine(to: CGPoint(x: self.frame.height, y: self.center.y))
        context?.strokePath()

        anmiation.toValue = 2.0 * .pi
        anmiation.duration = 1
        anmiation.repeatCount = repeatCount
        anmiation.isRemovedOnCompletion = false

    }
}