25ImageView_Rotation_Translation_Scale

- (void)viewDidLoad {
    [super viewDidLoad];
//    //UIWebView:加载网页视图
//    [self createWebView];
    //1.平移 缩放 旋转
    //UIView上有一个ImageView
    //UIView缩放的同时，要求ImageView同时缩放
    //需要设置子视图的autoresizingMask属性
    //    UIViewAutoresizingNone                 = 0,
    //    UIViewAutoresizingFlexibleLeftMargin   = 1 << 0,
    //    UIViewAutoresizingFlexibleWidth        = 1 << 1,
    //    UIViewAutoresizingFlexibleRightMargin  = 1 << 2,
    //    UIViewAutoresizingFlexibleTopMargin    = 1 << 3,
    //    UIViewAutoresizingFlexibleHeight       = 1 << 4,
    //    UIViewAutoresizingFlexibleBottomMargin = 1 << 5
    //自动布局
    //
    self.imgView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleBottomMargin;
}

- (void)createWebView
{
    //1.创建webView
    UIWebView *webView = [[UIWebView alloc]initWithFrame:self.view.frame];
    //2.创建URL 网址
    //使用http
    NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
    //3.创建请求，请求数据
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];
    //4.webView加载请求的数据
    [webView loadRequest:request];
    [self.view addSubview:webView];
}
//旋转
- (IBAction)rotate:(id)sender
{
    self.imgView.transform = CGAffineTransformMakeRotation(M_PI_2);
}
//平移
- (IBAction)translationClick:(id)sender
{
//    self.imgView.transform = CGAffineTransformMakeTranslation(100, 100);
    //view1平一的同时，imgView也平移
    self.view1.transform = CGAffineTransformMakeTranslation(100, 100);
}
//缩放
- (IBAction)zoomClick:(id)sender
{
    //倍数
//    self.imgView.transform = CGAffineTransformMakeScale(0.5, 0.5);
    //view1平一的同时，imgView也平移
    self.view1.transform = CGAffineTransformMakeScale(0.5, 0.5);
}
//平移 + 缩放
- (IBAction)translationAndZoomClick:(id)sender
{
    //1.设置缩放
    CGAffineTransform transform1 = CGAffineTransformMakeScale(0.5, 0.5);
    //2.设置平移
    CGAffineTransform transform2 = CGAffineTransformMakeTranslation(-100, -100);
    self.imgView.transform = CGAffineTransformConcat(transform1, transform2);
}