The UIKit Dynamics Catalog app is a conversion of Apple's iOS UIKit Dynamics Catalog source code into RubyMotion source code. Spec tests are included.
RubyMotion Web Site: http://www.rubymotion.com
Apple's UIKit Dynamics Catalog About: https://developer.apple.com/library/ios/samplecode/DynamicsCatalog/Introduction/Intro.html#//apple_ref/doc/uid/DTS40013414-Intro-DontLinkElementID_2
Apple's UIKit Dynamics Catalog Readme: https://developer.apple.com/library/ios/samplecode/DynamicsCatalog/Listings/ReadMe_txt.html#//apple_ref/doc/uid/DTS40013414-ReadMe_txt-DontLinkElementID_32
This conversion of UIKit Dynamics Catalog's Objective-C code into RubyMotion source code illustrates a number of uses of UIKit Dynamics, the iOS API that provides physics-related capabilities and animations to views and other dynamic items. Each of the 10 view controllers in this project shows a different way to use UIKit Dynamics—-in many cases, combining dynamic behaviors for interesting results.
Dennis Major, Will Raxworthy and Iuri Matias