Time Mesh is a motion based Android watchface. If you are calm, time moves in an orderly fashion. If not, ripples will propagate through your perception of time. Built using a physics simulation connected by springs, rendered using OpenGL in Java
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Source code here: https://github.com/chaoticbob/AndroidWatchFaces
See the watchface in action here: https://youtu.be/fGnshDKOR_s