源码核心动画01-CALayer-基本使用(了解)

//  ViewController.m
//  01-CALayer-基本使用(了解)
#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *redView;
@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
  
   
  
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    // 图层形变
    
    // 缩放
    [UIView animateWithDuration:1 animations:^{
        
//        _redView.layer.transform = CATransform3DMakeRotation(M_PI, 1, 1, 0);
//        _redView.layer.transform = CATransform3DMakeScale(0.5, 0.5, 1);
        
        // 快速进行图层缩放,KVC
        // x,y同时缩放0.5
//        [_redView.layer setValue:@0.5 forKeyPath:@"transform.scale"];
        
        [_redView.layer setValue:@(M_PI) forKeyPath:@"transform.rotation"];
        
        
    }];
    
    
}

- (void)imageLayer
{
    // cornerRadiu设置控件的主层边框
    _imageView.layer.cornerRadius = 50;
    
    NSLog(@"%@",_imageView.layer.contents)
    ;
    // 超出主层边框的内容全部裁剪掉
    _imageView.layer.masksToBounds = YES;
    
    // 设置边框
    _imageView.layer.borderColor = [UIColor whiteColor].CGColor;
    _imageView.layer.borderWidth = 1;
    
    // 如何判断以后是否需要裁剪图片，就判断下需要显示图层的控件是否是正方形。
}

- (void)viewLayer
{
    // 设置阴影
    // Opacity：不透明度
    _redView.layer.shadowOpacity = 1;
    //    _redView.layer.shadowOffset = CGSizeMake(10, 10);
    // 注意：图层的颜色都是核心绘图框架，通常。CGColor
    _redView.layer.shadowColor = [UIColor yellowColor].CGColor;
    _redView.layer.shadowRadius = 10;
    
    
    // 圆角半径
    _redView.layer.cornerRadius = 50;
    
    // 边框
    _redView.layer.borderWidth = 1;
    _redView.layer.borderColor = [UIColor whiteColor].CGColor;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end