SpriteKit example how to generate dynmically "Tiny Wings" style hills in SpriteKit/Swift 3. The code is based on the article at: http://www.raywenderlich.com/32954/how-to-create-a-game-like-tiny-wings-with-cocos2d-2-x-part-1
Many thanks for it.
This version contains now Physics and textured hills. The frame rate is around 60FPS on a iPhone 6 and all parameters and changeable trough properties