Comments on: Core Animation: 3D Perspective http://watchingapple.com/2008/04/core-animation-3d-perspective/ Thoughts about Apple and design Wed, 16 Mar 2011 02:32:09 +0000 hourly 1 http://wordpress.org/?v=3.1.2 By: John Blackburn http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-82971 John Blackburn Tue, 28 Sep 2010 15:16:12 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-82971 Thierry, The core code would be the same, since Core Animation works on the iPhone. Thierry,

The core code would be the same, since Core Animation works on the iPhone.

]]> By: Thierry http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-82470 Thierry Sat, 25 Sep 2010 23:11:12 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-82470 Great ! I would love to have the source of an iPhone version of this app. Great ! I would love to have the source of an iPhone version of this app.

]]> By: BiGGA http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-75061 BiGGA Thu, 19 Aug 2010 03:27:08 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-75061 Great tutorial. More informative and right to the point than some of those Core Animation books. The only one thing I was always confused was the transform.m34 = 1.0 / -2000; part. It took me quite a while to realize that it is essential to add 3D perspective to the sublayers. Otherwise, regardless how you rotate or change zPosition, the transformed layers will never look like having depth (i.e. looking smaller when getting further). Great tutorial. More informative and right to the point than some of those Core Animation books.

The only one thing I was always confused was the transform.m34 = 1.0 / -2000; part.
It took me quite a while to realize that it is essential to add 3D perspective to the sublayers.
Otherwise, regardless how you rotate or change zPosition, the transformed layers will never look like having depth (i.e. looking smaller when getting further).

]]> By: Paresh http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-62828 Paresh Sun, 23 May 2010 12:43:08 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-62828 Hello, I need to develop a grid with n X n dimensions. This grid will have n X n inner boxes in m X m outer boxes. Like, sudoku grid. I need to also give zooming animation when selected any box, all other boxes will be smaller, the selected main box will be zoomed. i did the coding using standard controls, inner boxes are uiimageview, outer boxes are uiview, but the navigation's push animation is slow because loading 20 x 20 rectangles... also zooming is not perfect. it's somewhat slower. I've did the zooming and grid using standard controls, and manually changed x,y co-ordinates and height and width for zooming, but the app is too slow. Could you suggest me right direction? Please provide example if possible..! Thanks. Hello,

I need to develop a grid with n X n dimensions. This grid will have n X n inner boxes in m X m outer boxes. Like, sudoku grid. I need to also give zooming animation when selected any box, all other boxes will be smaller, the selected main box will be zoomed. i did the coding using standard controls, inner boxes are uiimageview, outer boxes are uiview, but the navigation’s push animation is slow because loading 20 x 20 rectangles… also zooming is not perfect. it’s somewhat slower. I’ve did the zooming and grid using standard controls, and manually changed x,y co-ordinates and height and width for zooming, but the app is too slow. Could you suggest me right direction? Please provide example if possible..! Thanks.

]]> By: John Blackburn http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-22897 John Blackburn Wed, 10 Dec 2008 18:05:28 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-22897 Good catch, Brad. Yes, while writing the post I editted the code on the spot to fit the available width and I botched things. Now set right, thanks to you. Good catch, Brad. Yes, while writing the post I editted the code on the spot to fit the available width and I botched things. Now set right, thanks to you.

]]> By: Brad http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-22683 Brad Tue, 09 Dec 2008 01:09:16 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-22683 I don't understand why - (void) get3DTransformWithX:(float)x andY:(float)y is needed. You must have written this on the spot? It returns void when it should return a CATransform3D and your passing values in that are not been used. Anyways, this actually help!!! Thank you for this. At first my rotations were not appearing 3D, and I was very disappointed, but the m34 translation was the issue! Thanks for posting the example. I don’t understand why – (void) get3DTransformWithX:(float)x andY:(float)y is needed. You must have written this on the spot? It returns void when it should return a CATransform3D and your passing values in that are not been used.

Anyways, this actually help!!! Thank you for this. At first my rotations were not appearing 3D, and I was very disappointed, but the m34 translation was the issue! Thanks for posting the example.

]]> By: Linan Wang http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-5472 Linan Wang Tue, 29 Apr 2008 13:40:30 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-5472 I feel in the animation function, Instead of playing with zPosition [floorLayer setValue:[NSNumber numberWith:xx] forKeyPath:@"sublayerTransformation.translation.z"] is a better way. I feel in the animation function,
Instead of playing with zPosition
[floorLayer setValue:[NSNumber numberWith:xx] forKeyPath:@”sublayerTransformation.translation.z”]
is a better way.

]]> By: Linan Wang http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-5356 Linan Wang Thu, 24 Apr 2008 21:29:44 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-5356 Get it, thanks! Get it, thanks!

]]> By: John Blackburn http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-5347 John Blackburn Thu, 24 Apr 2008 15:52:58 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-5347 Linan, the floorLayer won't display with perspective because the 3D transform is being *applied* to the floorLayer. If you want to display the floorLayer with perspective, you'll have to create a parent layer, add floorLayer to that parent layer, then apply the 3D perspective to that new parent layer. Linan, the floorLayer won’t display with perspective because the 3D transform is being *applied* to the floorLayer. If you want to display the floorLayer with perspective, you’ll have to create a parent layer, add floorLayer to that parent layer, then apply the 3D perspective to that new parent layer.

]]> By: Linan Wang http://watchingapple.com/2008/04/core-animation-3d-perspective/comment-page-1/#comment-5344 Linan Wang Thu, 24 Apr 2008 14:50:09 +0000 http://watchingapple.com/2008/04/core-animation-3d-perspective/#comment-5344 Thank you for the example. The floorLayer is not rotated to x-z plan. I tried to rotate -90 degrees and then use transform3d on it without walls. But it's not displayed perspectively. Could you please give me a hint? Thank you for the example.
The floorLayer is not rotated to x-z plan. I tried to rotate -90 degrees and then use transform3d on it without walls. But it’s not displayed perspectively. Could you please give me a hint?

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