Patchy Shape

 

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By running the script you're able to:

 - Send all of the faces with random distances in a specific range

 -  Optionally choose transform of faces with random values in specific ranges

 - By adding two frames as beginning and end frames, animate this process in 2 ways:

   - I ) When slider goes forward, the object becomes into piece

   - II) When slider goes forward, all the pieces gather together and make your primary model

 - Slide the time slider on a slide you want and press "Fix the posture" button to remove anmation and fix the model on that posture(You can manualy do this by deleting keyframes)