On Feb 23, 2010, at 10:15 AM, Gustavo Pizano wrote: >> Additionally, rather than changing the anchorPoint do your animation based >> on the center of the view instead of it's frame's origin (which will also >> continue to work as you expect should you need to do an animation on a layer >> that has a transform). > > So When creating the CABasicAnimation I shall place the fromValue and ToValue > to be the translated values? or I should set the CATransform3d with the > translated layer position?
The frame property of a layer is calculated from the layer's position, anchorPoint, transform and bounds properties. When you set the frame of a layer, that rectangle is used to calculate the layers new position and bounds properties using the transform and the anchorPoint. In general when moving a layer it is easier to change the layer's position instead of the frame, as doing so is agnostic to the other properties of a layer. Changing the frame or transform of a layer in order to move it tends to lead to lots of head-meets-desk time as the developer tries to figure out why their animation isn't working the way they expect it to. In the UIView case, the center property corresponds to the position property, and the anchorPoint left at its default 0.5,0.5. -- David Duncan Apple DTS Animation and Printing _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
