Re: Front and back flip animation

FROM : Steven Huey
DATE : Tue Feb 19 20:07:24 2008

Geert,

This may help you some, I just came across this today:

http://www.brockerhoff.net/src/index.html

Rainer has a Flipr project which performs the same operation on a 
window, maybe you could adapt it to your views. I'm not familiar with 
the source at all, but if you haven't seen this thought you might 
appreciate it.

Best regards,
Steven Huey

On Feb 15, 2008, at 4:52 AM, Geert B. Clemmensen wrote:

> 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