#careplicatorlayer

[invasivecode]

Replicator Layer

In this tutorial I am going to show you how to create a very interesting animation with replicator layers, instances of the CAReplicatorLayer class. After building so many apps and using every single framework of Cocoa Touch, every time I build something new for a customer, I feel the need to spend some time researching new functionalities and interaction patterns to make the solution we provide really unique. Most of the time, I focus on usability and try to push the limits of Cocoa Touch.

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[invasivecode]

Core Animation Part VI: Replicator layers

It is time to give a look at some more advanced Core Animation techniques. In the previous posts, I reviewed the main concepts related to an animation and the different types of animations you can implement with the CA framework. I hope the difference between a basic animation, a group animation and a keyframe animation is clear now. If not, just drop me a mail with your doubts. Or, if you are at the WWDC, come to say hi and I will be happy to answer your questions. [Keep reading](https://www.invasivecode.com/weblog/core-animation-part-vi-replicator-layers/)

[invasivecode]

#Transform Layers In the [previous post](http://tmblr.co/Z0DVRyQywldK "Replicator Layers"), I showed you how to use the replicator layer class (`CAReplicatorLayer`). The main problem with layers is that if you want to render them in 3D is quite hard. You need to apply a 3D transformation to each sublayer, fight against the anchor point to get the right transformations. Then, you have to apply a 3D transformation to the root layer and change the `m34` value of the 3D transformation matrix to simulate the prospective. If you don't do that, everything looks flat. Transform layers are the solution to this. So, this time I want to show you another interesting core animation layer that can be used to create a 3D layer hierarchy, rather than the flattened hierarchy rendering model used by other `CALayer` classes. [Keep reading](https://www.invasivecode.com/weblog/core-animation-transform-layer/)