CATransform3應用錨點後效果消失

Question

編輯與正確的觀察。

我用以下兩個片段來旋轉UIImageView。 stage1後，我得到了所需的3D效果：視圖旋轉（3D效果）和拉伸（更大的尺寸）。在舞臺2上，我試圖用右側的鉸鏈擺動右側的視圖。

如果我應用了更改定位點的線，視圖會正確擺動（右轉），但存在一個主要問題：視圖的大小恢復爲原始大小（較小），而（旋轉）3D效果仍然完好無損，然後發生擺動。

有什麼建議嗎？

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) { 
    }]; 
} 

Answer 1

您需要在「選項」與時間添加到您的動畫，並添加options:UIViewAnimationOptionBeginFromCurrentState

否則它再次開始啓動。

所以，你的第2階段是這樣的：

-(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) { 
    }]; 
}