iOS开发UI篇----UI基础之Transform

// 平移
- (IBAction)trasnlate:(id)sender {
    // 一次性的移动10 的距离
//    _button.transform = CGAffineTransformMakeTranslation(10, 0);
    
    // 如果想要持续移动，那么就需要得到当前view的transform
    // 1. 获取当前button的transform属性
        CGAffineTransform transform = _button.transform;
    
    // 2. 在transform的基础上进行修改
    _button.transform = CGAffineTransformTranslate(transform, 10, 0);
}

// 缩放
- (IBAction)scal:(id)sender {
    // 执行缩放
//    _button.transform = CGAffineTransformMakeScale(0.5, 0.5);
    
    // 持续执行缩放
    // 1. 获取当前button的transform
    CGAffineTransform transform = _button.transform;
    
    // 2. 在transform进行修改
    _button.transform = CGAffineTransformScale(transform, 0.5, 0.5);
}

// 旋转
- (IBAction)rotate:(id)sender {
    
//    _button.transform = CGAffineTransformMakeRotation(M_PI_4);
    
  
    
    [UIView animateWithDuration:1 animations:^{
        // 1. 获取当前button的transform
        CGAffineTransform transform = self.button.transform;
        
        // 2. 在transform进行修改
        self.button.transform = CGAffineTransformRotate(transform, M_PI_4);
        
        self.button.transform = CGAffineTransformTranslate(transform, 30, 0);
        
        self.button.transform = CGAffineTransformScale(transform, 1.5, 1.5);
    }];
}

- (IBAction)reset:(id)sender {
    // 恢复原始状态
    _button.transform = CGAffineTransformIdentity;
}