iOS transform（平移、旋转、缩放）

一、平移

//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);
}];

二、旋转

[UIView animateWithDuration:0.5 animations:^{

//旋转(旋转的度数, 是一个弧度)
//self.imageV.transform = CGAffineTransformMakeRotation(M_PI_4);

self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, M_PI_4);

}];

三、缩放

[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);
}];