问题描述

简单UIView的核心动画3D转换

我正在做关于CA的部分翻转动画。但是在透视的时候遇到问题。

代码：

    [UIView animateWithDuration:1.0 animations:^{
    self.someView.layer.anchorPoint = CGPointMake(0.5, 0);
    self.someView.layer.transform = CATransform3DMakeRotation(M_PI*0.6,1.0,0.0,0.0);
} completion:^(BOOL finished){
    // code to be executed when flip is completed
}];

怎么样得到这样的透视图？

解决方案

比如像这样？

CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;
rotationAndPerspectiveTransform.m34 = 1.0 / 300;
rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, M_PI * 0.6, 1.0f, 0.0f, 0.0f);
[UIView animateWithDuration:1.0 animations:^{
    self.someView.layer.anchorPoint = CGPointMake(0.5, 0);
    self.someView.layer.transform = rotationAndPerspectiveTransform;
} completion:^(BOOL finished){
    // code to be executed when flip is completed
}];