Ios Layer Transform 形变

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////  ViewController.m//  图层的基本使用//#import "ViewController.h"#import "UIImage+CZ.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UIImageView *imgView;@property (weak, nonatomic) IBOutlet UIView *redView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    self.redView.layer.contents = (id)[UIImage imageNamed:@"papa"].CGImage;}-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    //学习形变属性    //缩放    //第三个参数sz 看不到效果    //self.redView.layer.transform = CATransform3DMakeScale(1.5, 1.5, 1);        //旋转    //1, 0, 0 x轴旋转    //0, 1, 0 y轴旋转    //0, 0, 1 z轴旋转    //self.redView.layer.transform = CATransform3DMakeRotation(M_PI_4 , 0, 1, 0);            //平移    //self.redView.layer.transform = CATransform3DMakeTranslation(-10, 10, 0);        //使用kvc的方法 改变 属性值    //[self.redView.layer setValue:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.5, 1.5, 1)] forKey:@"transform"];    #warning transform里有更具体的形变属性    //缩放    //transform.scale.x 代表x方向上绽放    //transform.scale.y 代表y方向上绽放    //[self.redView.layer setValue:@1.5 forKeyPath:@"transform.scale.y"];        //旋转    //transform.rotation.z z轴旋转    //transform.rotation.x x轴旋转    //transform.rotation.y y轴旋转    //[self.redView.layer setValue:@(M_PI_4) forKeyPath:@"transform.rotation.y"];        //平移    //transfrom.translation.x x方向移动    //transfrom.translation.y y方向移动    //[self.redView.layer setValue:@(-20) forKeyPath:@"transform.translation.y"];    //不具体指定x还是y方向的移动    //[self.redView.layer setValue:[NSValue valueWithCGPoint:CGPointMake(20, 20)] forKeyPath:@"transform.translation"];        #warning kvc设置不仅限于transform属性，只要layer有的属性，都设置    [self.redView.layer setValue:[NSValue valueWithCGRect:CGRectMake(0, 0, 200, 200)] forKey:@"bounds"];}@end
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