Hello,
I finally got this to work the way I wanted to. The main trick is that
for a layer associated with a view (setWantsLayer:YES) the anchorPoint
is (0, 0). Apple's CALayer documentation states that the anchorPoint
(0.5, 0.5), but alas, this isn't the truth in all cases.
The final pieces of the puzzle came around when I earlier today
stumbled on MFFlipController done my Mike Lee (http://boondoggle.atomicwang.org/lemurflip
). It took me a few minutes assembling the X-code project, but after
that it was smooth sailing. I would say that, for my specific purpose,
Mike's example is by a good margin better that anything I've found on
Apple's site. Thx. Mike.
Kind Regards,
Geert B. Clemmensen
Begin forwarded message:
From: "Geert B. Clemmensen" <[EMAIL PROTECTED]>
Date: 15. februar 2008 10.52.25 GMT+01:00
To: Cocoa Developers <cocoa-dev@lists.apple.com>
Subject: Front and back flip animation
I would like to implement a switch between two views, each with
their own set of controls etc., so the switch animates like when you
click on the small "i" on a widget, i.e. the concept of a front and
a back. The animation should flip the views around a vertical axis
in the middle of their frame. I've looked at the ViewFlip and
GeekGameBoard examples (and many others) and kinda have things
working, but it is not quite what I want. I would like to solicit
opinions on what the best strategy is. The ViewFlip uses
CATransform3DMakeRotation, but that isn't ideal as described in the
GeekGameBoard example. The GeekGameBoard uses CALayer and not
NSViews, so I'm unsure how to change the example to what I need.
One approach I've considered is to add an animation to the parent
view ("subviews" property) so it moves and resizes the view. Let's
say that the views are 200x400 and with frameOrigin at 0,0. Would it
then make sense to have the front animate from ((0,0),(200,400)) to
((100,0),(0,400)) and the reverse for the back (assuming doubleSided
is NO)?
Is there a much better and obvious way, once you've seen the
light :o), to achieve the front/back flip animation?
Kind Regards,
Geert B. Clemmensen
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