#import "HMViewController.h"

// 每秒秒针转6度

#define perSecendA 6

// 每分钟分针转6度

#define perMinuteA 6

// 每小时时针转6度

#define perHourA 30

// 每分钟时针转6度

#define perMinuteHourA 0.5

#define angle2radian(x) ((x) / 180.0 * M_PI)

@interface HMViewController ()

{

    CALayer *_second;

    CALayer *_minute;

    CALayer *_hour;

}

@property (weak, nonatomic) IBOutlet UIView *redView;

@property (weak, nonatomic) IBOutlet UIImageView *clockView;

@end

@implementation HMViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    // 1.添加秒针

    [self addSecond];

    // 2.添加分针

    [self addMintue];

    // 3.添加时针

    [self addHour];

    // 创建定时器

    [NSTimer scheduledTimerWithTimeInterval: target:self selector:@selector(update) userInfo:nil repeats:YES];

    [self update];

}

- (void)addHour

{

    CGFloat imageW = _clockView.bounds.size.width;

    CGFloat imageH = _clockView.bounds.size.height;

    // 1.添加时针

    CALayer *hour = [CALayer layer];

    // 2.设置锚点

    hour.anchorPoint = CGPointMake(0.5, );

    // 3.设置位置

    hour.position = CGPointMake(imageW * 0.5, imageH * 0.5);

    // 4.设置尺寸

    hour.bounds = CGRectMake(, , , imageH * 0.5 - );

    // 5.红色

    hour.backgroundColor = [UIColor blackColor].CGColor;

    hour.cornerRadius = ;

    // 添加到图层上

    [_clockView.layer addSublayer:hour];

    _hour = hour;

}

// 添加分针

- (void)addMintue

{

    CGFloat imageW = _clockView.bounds.size.width;

    CGFloat imageH = _clockView.bounds.size.height;

    // 1.添加分针

    CALayer *minute = [CALayer layer];

    // 2.设置锚点

    minute.anchorPoint = CGPointMake(0.5, );

    // 3.设置位置

    minute.position = CGPointMake(imageW * 0.5, imageH * 0.5);

    // 4.设置尺寸

    minute.bounds = CGRectMake(, , , imageH * 0.5 - );

    // 5.红色

    minute.backgroundColor = [UIColor blueColor].CGColor;

    // 添加到图层上

    [_clockView.layer addSublayer:minute];

    _minute = minute;

}

// 添加秒针

- (void)addSecond

{

    CGFloat imageW = _clockView.bounds.size.width;

    CGFloat imageH = _clockView.bounds.size.height;

    // 1.添加秒针

    CALayer *second = [CALayer layer];

    // 2.设置锚点

    second.anchorPoint = CGPointMake(0.5, );

    // 3.设置位置

    second.position = CGPointMake(imageW * 0.5, imageH * 0.5);

    // 4.设置尺寸

    second.bounds = CGRectMake(, , , imageH * 0.5 - );

    // 5.红色

    second.backgroundColor = [UIColor redColor].CGColor;

    // 添加到图层上

    [_clockView.layer addSublayer:second];

    _second = second;

}

- (void)update

{

    // 获取秒数

    // 获取日历对象

    NSCalendar *calendar = [NSCalendar currentCalendar];

    // 获取日期组件

    NSDateComponents *compoents = [calendar components:NSCalendarUnitSecond | NSCalendarUnitMinute | NSCalendarUnitHour fromDate:[NSDate date]];

    // 获取秒数

    CGFloat sec = compoents.second;

    // 获取分钟

    CGFloat minute = compoents.minute;

    // 获取小时

    CGFloat hour = compoents.hour;

    // 算出秒针旋转多少°

    CGFloat secondA = sec * perSecendA;

    // 算出分针旋转多少°

    CGFloat minuteA = minute * perMinuteA;

    // 算出时针旋转多少°

    CGFloat hourA = hour * perHourA;

    hourA += minute * perMinuteHourA;

    // 旋转秒针

    _second.transform = CATransform3DMakeRotation(angle2radian(secondA), , , );

    // 旋转分针

    _minute.transform = CATransform3DMakeRotation(angle2radian(minuteA), , , );

    // 旋转时针

    _hour.transform = CATransform3DMakeRotation(angle2radian(hourA), , , );

}

@end