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Robot Media


RMPaint: an Open Source Painting Library for iOS

Touch painting is a very requested feature in our children’s book apps and is also a part of Storybuilder, our children’s book authoring tool. Instead of repeating code over and over again we decided to create a library just for it: RMPaint. And we made it open source while we were at it.

RMPaint is an iOS painting library based in the GLPaint example by Apple. Its main features to date are:

  • Paint with touch gestures
  • Dynamic brush and color
  • Save and restore painting sessions
  • Designed for iOS 5 with ARC
As usual, we invite developers to fork RMPaint and contribute or request improvements. We will be adding more features shortly.