应用锚点后，CATransform3DRotate效果消失了 [英] CATransform3DRotate effects gone after applying anchor point

问题描述

以正确的观察进行编辑。

EDIT with correct observation.

我使用以下两个片段来旋转UIImageView。在stage1之后，我得到了所需的3D效果：视图旋转（3D效果）并伸展了（更大的尺寸）。在stage2上，我尝试用右铰链摆动rightView。

I used the following two snippets to rotate an UIImageView. After the stage1, I got the desired 3D effect: the view rotate (3D effect) and stretched out (larger size). On stage2, I am trying to swing the rightView with the hinge on the right.

如果我应用了更改锚点的线，则视图会正确摆动（右）有一个主要问题：在（旋转）3D效果仍然完好无损之后，视图的大小又恢复为原始大小（较小）。

If I applied the line that changes the anchor point, the view swings correctly (hinge on right) with one major issue: The view's size got restored back to original size (smaller) while the (rotation) 3D effect is still intact and then the swinging occurs.

有什么建议吗？

rightView.layer.anchorPoint = CGPointMake(1.0, 0.5); 


-(void)stage1
{
    [UIView animateWithDuration:1.5  animations:^{
        rightView.transform = CGAffineTransformMakeTranslation(0,0);   //rightView i UIImageView
        CATransform3D _3Dt = CATransform3DIdentity;
        _3Dt =CATransform3DMakeRotation(3.141f/42.0f,0.0f,-1.0f,0.0f);  
        _3Dt.m34 = -0.001f;
        _3Dt.m14 = -0.0015f;
        rightView.layer.transform = _3Dt;
    } completion:^(BOOL finished){
        if (finished) {
            NSLog(@"finished..");
        }
    }];
}

-(void)Stage2
{
    rightView.layer.anchorPoint = CGPointMake(1.0, 0.5);   //issue?
    rightView.center = CGPointMake(1012, 384);
    [UIView animateWithDuration:1.75 animations:^{
        CATransform3D rightTransform = rightView.layer.transform;
        rightTransform.m34 = 1.0f/500; 
        rightTransform = CATransform3DRotate(rightTransform, M_PI_2, 0, 1, 0);
        rightView.layer.transform = rightTransform;
    } completion:^(BOOL finished) {
    }];
}

推荐答案

您需要添加 options添加到带有持续时间的动画中，并添加 options：UIViewAnimationOptionBeginFromCurrentState

You need to add the "options" to your animate with duration and add options:UIViewAnimationOptionBeginFromCurrentState

否则，它会从头开始。

所以您的阶段2看起来像这样：

So your stage 2 would look like this:

-(void)Stage2
{
    rightView.layer.anchorPoint = CGPointMake(1.0, 0.5);   //issue?
    rightView.center = CGPointMake(1012, 384);
    [UIView animateWithDuration:1.75
                          delay:0.00 
                        options:UIViewAnimationOptionBeginFromCurrentState
                     animations:^{
        CATransform3D rightTransform = rightView.layer.transform;
        rightTransform.m34 = 1.0f/500; 
        rightTransform = CATransform3DRotate(rightTransform, M_PI_2, 0, 1, 0);
        rightView.layer.transform = rightTransform;
    } completion:^(BOOL finished) {
    }];
}

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