Choosing Between Core Animation and Open GL for 2D Card Games: Is OpenGL Truly Necessary?

Here is the code based on the specifications provided:

Implementing Swipe-to-Reveal Menus with CABasicAnimation in iOS

Understanding CABasicAnimation's toValue and byValue: A Guide to Smooth Animations in iOS

Animating Circle's EndAngle with CABasicAnimation

Understanding the Limitations of Custom Views in iOS Animations