#import "ViewController.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageV;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)moveUp:(id)sender {
//平移
[UIView animateWithDuration:0.5 animations:^{
//使用Make,它是相对于最原始的位置做的形变.不累加形变,且多次点击只形变一次
//self.imageV.transform = CGAffineTransformMakeTranslation(0, -100);
//相对于上一次做形变.初始值self.imageV.transform为0,多次点击,会自动在上一次形变的基础上做平移
self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, 0, -100);
}];
}
- (IBAction)moveDown:(id)sender {
//平移
[UIView animateWithDuration:0.5 animations:^{
//使用Make,它是相对于最原始的位置做的形变.
//self.imageV.transform = CGAffineTransformMakeTranslation(0, -100);
//相对于上一次做形变.
self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, 0, 100);
}];
}
- (IBAction)rotation:(id)sender {
[UIView animateWithDuration:0.5 animations:^{
//旋转(旋转的度数, 是一个弧度),M_PI_4,_下划线表示一个除号/
//self.imageV.transform = CGAffineTransformMakeRotation(M_PI_4);
self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, M_PI_4);
}];
}
- (IBAction)scale:(id)sender {
[UIView animateWithDuration:0.5 animations:^{
//缩放
//self.imageV.transform = CGAffineTransformMakeScale(0.5, 0.5);
self.imageV.transform = CGAffineTransformScale(self.imageV.transform, 0.8, 0.8);
}];
}
/**
* 总结:
1:平移:transform是结构体,定义一个transform:CGAffineTransform form
//使用Make,它是相对于最原始的位置做的形变.不累加形变,且多次点击只形变一次
//self.imageV.transform = CGAffineTransformMakeTranslation(0, -100);
//相对于上一次做形变.初始值self.imageV.transform为0,多次点击,会自动在上一次形变的基础上做平移
self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, 0, -100);
2:旋转:
//旋转(旋转的度数, 是一个弧度),M_PI_4,_下划线表示一个除号/
//self.imageV.transform = CGAffineTransformMakeRotation(M_PI_4);
self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, M_PI_4);
3:缩放:
//缩放
//self.imageV.transform = CGAffineTransformMakeScale(0.5, 0.5);
self.imageV.transform = CGAffineTransformScale(self.imageV.transform, 0.8, 0.8);
4:清空形变属性:
CGAffineTransform form = CGAffineTransformIdentity;
self.imageV.transform = form;
5:1:在实际开发中,使用场景:1:当涉及一些frame的改变或是形变的时候可以用transform来取代frame 2:一般在实际开发中都是平移,旋转缩放混合使用。
*/
@end