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Alex Rivera
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I have an user interface where an item get deleted, I would like to mimic the "move to folder" effect in iOS mail. The effect where the little letter icon is "thrown" into the folder. Mine will get dumped in a bin instead. I tried implementing it using a CAAnimation on the layer. As far as I can read in the documentations I should be able to set a byValue and a toValue and CAAnimation should interpolate the values. I am looking to do a little curve, so the item goes through a point a bit above and to the left of the items start position. CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"position"]; [animation setDuration:2.0f]; [animation setRemovedOnCompletion:NO]; [animation setFillMode:kCAFillModeForwards]; [animation setTimingFunction:[CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseOut]]; [animation setFromValue:[NSValue valueWithCGPoint:fromPoint]]; [animation setByValue:[NSValue valueWithCGPoint:byPoint]]; [animation setToValue:[NSValue valueWithCGPoint:CGPointMake(512.0f, 800.0f)]]; [animation setRepeatCount:1.0]; I played around with this for some time, but it seems to me that Apple means linear interpolation. Adding the byValue does not calculate a nice arc or curve and animate the item through it. How would I go about doing such an animation? Thanks for any help given.
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