This class is essentially the code from my iOS app: AKW Factor Tree. It allows users to do rough (math) work on the device instead of using paper. The class provides all the functionality that you see in the image: color change, undo/redo, clear, dragging/sizing, replay the touches, and hiding/showing the scratchpad. As mentioned in the title, this class uses GLKit which is only available for iOS 5.0 and up.

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I guess you came to this post by searching similar kind of issues in any of the search engine and hope that this resolved your problem. If you find this tips useful, just drop a line below and share the link to others and who knows they might find it useful too.

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This article is related to

iPad,iPhone,iPhone Resources,iPhone Articles,iPhone Development,iPhone Turorial,Mobile Development Tutorials,Mobile Developments,Objective C,ScratchPadView,GLKit