I am trying to manually create a fragmented spherical object in Blender for use in a Unity game. When i create a separate object from the mesh the smoothing is no longer contiguous so it becomes obvious that the object is already fragmented.

Is there a way for the fragments to appear like the original whole and contiguous unbroken sphere with no gaps and consistent shading? Can I instruct Blender to smooth across all objects instead of smoothing individual fragments?

I am quite new to modeling and would appreciate any pointers.


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Yes, this can be done.

  • keep a single whole object
    (this is the reference for correct normals).
  • enable auto-smooth on all broken parts
    (needed for custom normals to show).
  • using the Normal Edit modifier on the broken parts to copy the normals from the whole object to the broken parts.

If you want to avoid some slow-downs from continued updates, you can apply the modifiers to store the custom normals.

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