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UITableViewCell popular animation (flipping around Y axis, depending on scroll direction)
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@interface YourViewController : UIViewController <UITableViewDelegate, UITableViewDataSource> { | |
UIImageOrientation scrollOrientation; | |
CGPoint lastPos; | |
} | |
- (void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { | |
if (tableView.isDragging) { | |
UIView *myView = cell.contentView; | |
CALayer *layer = myView.layer; | |
CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity; | |
rotationAndPerspectiveTransform.m34 = 1.0 / -1000; | |
if (scrollOrientation == UIImageOrientationDown) { | |
rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, M_PI*0.5, 1.0f, 0.0f, 0.0f); | |
} else { | |
rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, -M_PI*0.5, 1.0f, 0.0f, 0.0f); | |
} | |
layer.transform = rotationAndPerspectiveTransform; | |
[UIView animateWithDuration:.5 animations:^{ | |
layer.transform = CATransform3DIdentity; | |
}]; | |
} | |
} | |
- (void) scrollViewDidScroll:(UIScrollView *)scrollView { | |
scrollOrientation = scrollView.contentOffset.y > lastPos.y?UIImageOrientationDown:UIImageOrientationUp; | |
lastPos = scrollView.contentOffset; | |
} |
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