//

//  ViewController.m

//  Path

//

//  Created by YouXianMing on 15/5/11.

//  Copyright (c) 2015年 YouXianMing. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic, strong) NSTimer       *timer;

@property (nonatomic, strong) CAShapeLayer  *shapeLayer;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // 生成贝塞尔曲线

    UIBezierPath* bezierPath = UIBezierPath.bezierPath;

    [bezierPath moveToPoint: CGPointMake(4.5, 2.5)];

    [bezierPath addLineToPoint: CGPointMake(32.5, 59.5)];

    [bezierPath addLineToPoint: CGPointMake(79.5, 10.5)];

    [bezierPath addLineToPoint: CGPointMake(144.5, 69.5)];

    [bezierPath addLineToPoint: CGPointMake(175.5, 15.5)];

    [bezierPath addLineToPoint: CGPointMake(211.5, 48.5)];

    [bezierPath addLineToPoint: CGPointMake(217.5, 23.5)];

    // 产生layer

    self.shapeLayer             = [CAShapeLayer layer];

    self.shapeLayer.frame       = CGRectMake(, , , );

    self.shapeLayer.fillColor   = [UIColor clearColor].CGColor;

    self.shapeLayer.strokeColor = [UIColor redColor].CGColor;

    self.shapeLayer.borderWidth = .f;

    self.shapeLayer.path        = bezierPath.CGPath;

    // 添加layer

    [self.view.layer addSublayer:self.shapeLayer];

    // 添加定时器

    self.timer = [NSTimer scheduledTimerWithTimeInterval:.f

                                                  target:self

                                                selector:@selector(timerEvent)

                                                userInfo:nil

                                                 repeats:YES];

}

- (void)timerEvent {

    CGFloat percent           = arc4random() %  / .f;

    self.shapeLayer.strokeEnd = percent;

    NSLog(@"%.1f%%", percent * );

}

@end