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What you explain sounds reasonable. Generate a smaller sphere with the radius set for an appropriate sea level. Alternativly generate a sphere and alter its scale. This'd be quicker than regenerating a new one.


You should be able to animate the height using u_time in your shader. Example usage of u_time code in Xcode project download here - https://developer.apple.com/library/mac/samplecode/SceneKit_Slides_WWDC2013/Introduction/Intro.html (compiles to slide show, use -> key to goto slide 40-something) Can you help me out? I've been trying to do a height map ...

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