iOS 帧动画之翻转和旋转动画

记录两个比较简单的动画，一个是翻转的动画，一个是旋转的动画。

旋转动画：

[UIView animateWithDuration:3 animations:^{
        if (formView) {
            formView.transform = CGAffineTransformMakeRotation(M_PI);
        }
    }];

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    //默认是顺时针效果，若将fromValue和toValue的值互换，则为逆时针效果
    animation.fromValue = [NSNumber numberWithFloat:0.f];
    animation.toValue = [NSNumber numberWithFloat: M_PI *2];
    animation.duration = 3;
    animation.autoreverses = NO;
    animation.fillMode = kCAFillModeForwards;
    animation.repeatCount = MAXFLOAT; //如果这里想设置成一直自旋转，可以设置为MAXFLOAT，否则设置具体的数值则代表执行多少次
    [formView.layer addAnimation:animation forKey:nil];

翻转动画：

1 围绕中间轴翻转

[UIView transitionWithView:formView duration:2.0f options:UIViewAnimationOptionTransitionFlipFromTop animations:^{
        
        
    } completion:^(BOOL finished) {
        NSLog(@"图像翻转完成");
    }];

2 翻页，类似日历的那种

//开始动画
    [UIView beginAnimations:@"doflip" context:nil];
    //设置时常
    [UIView setAnimationDuration:1];
    //设置动画淡入淡出
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    //设置代理
    [UIView setAnimationDelegate:self];
    //设置翻转方向
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:formView cache:YES];
    //动画结束
    [UIView commitAnimations];

3 翻页往上翻

 [UIView beginAnimations:@"curlUp" context:nil];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];//指定动画曲线类型，该枚举是默认的，线性的是匀速的
    //设置动画时常
    [UIView setAnimationDuration:1];
    [UIView setAnimationDelegate:self];
    //设置翻页的方向
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:formView cache:YES];
    //关闭动画
    [UIView commitAnimations];

4 缩放动画，直接在原来的基础上进行缩放

    CGAffineTransform transform;
    transform = CGAffineTransformScale(formView.transform,1.2,1.2);
    [UIView beginAnimations:@"scale" context:nil];
    [UIView setAnimationDuration:2];
    [UIView setAnimationDelegate:self];
    [formView setTransform:transform];
    [UIView commitAnimations];