动画后我的CALayer变换保持不变，但视角消失了

Question

我有以下代码在Y轴上将CALayer旋转-45度：

#define D2R(x) (x * (M_PI/180.0))

- (void) swipe:(UISwipeGestureRecognizer *)recognizer
{        
    CATransform3D transform = CATransform3DMakeRotation(D2R(-45), 0, 1.0, 0);
    transform.m34 = -1.0 / 850;

    CABasicAnimation *transformAnimation = [CABasicAnimation animationWithKeyPath: @"transform"];
    transformAnimation.fillMode = kCAFillModeForwards;
    transformAnimation.removedOnCompletion = NO;
    transformAnimation.toValue = [NSValue valueWithCATransform3D:transform];
    transformAnimation.duration = 0.5;

    [self.layer addAnimation:transformAnimation forKey:@"transform"];
}

动画有效，除了它没有透视结束 - 如果我正确理解了事情，就会忽略我的m34设置。

中途：

最后：

我做错了什么？

Answer 1

动画仅影响动画期间视图的外观。动画结束后，它不会应用于视图。你需要自己做。在添加动画后，我正在猜这样的东西：

self.layer.transform = transform;

您可以立即执行此操作，因为动画将隐藏它直到动画完成。

Answer 2

试试这个：

- (void) swipe:(UISwipeGestureRecognizer *)recognizer
{        

    CATransform3D transform = CATransform3DIdentity;
    transform.m34 = -10 / 850.0;
    transform = CATransform3DRotate(transform, D2R(-45), 0, 1.0, 0);

    CABasicAnimation *transformAnimation = [CABasicAnimation animationWithKeyPath: @"transform"];
    transformAnimation.fillMode = kCAFillModeForwards;
    transformAnimation.removedOnCompletion = NO;
    transformAnimation.toValue = [NSValue valueWithCATransform3D:transform];
    transformAnimation.duration = 0.5;

    [self.layer addAnimation:transformAnimation forKey:@"transform"];
}

结束效果是这样的：