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I am trying to split my low poly terain mesh and UVs into smaller pieces.
My mesh liiks like this:

image 1 http://c2n.me/3AHCXzB.png

I am looking for automated way to split it in several parts like this:

image 2 http://c2n.me/3AHDc3d.png

I assume thet this will be really easy but I am not artist and my experience with Blender is really low. Is there any easy way to make it (script could be better)?

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I believe I have a way. This is what I did, and it worked perfectly.

  1. Shift + A > Mesh > Plane.
  2. Go to the Properties panel > Object Modifiers tab and add a Subdivision Surface modifier. Use these settings:

       enter image description here

  1. Key Tab to enter Edit Mode, U to open the Unwrap menu, and select Unwrap.
  2. Split the 3D Viewport and make the new panel a UV Image Editor. Open your image in the editor.

enter image description here

  1. Tab out of Edit Mode.
  2. Add a Displace modifier. Click the new texture button. Use these settings:

       enter image description here

  1. Go to the Properties panel > Textures tab. Load in your image from the dropdown menu.

       enter image description here

       You should now see your texture displayed on the plane in the 3D Viewport. Note that you
       may have to adjust the Displace modifier > Midlevel: value for your texture to sit right near the
       origin point. I have to use 0.836.

       enter image description here

  1. Tab into Edit Mode. Key W to open the Specials menu and select Subdivide. Key T to toggle open/close the Toolshelf. Change the Number of Cuts to 3.

       enter image description here

  1. In the UV Image Editor, key S, then .25. Additional UV Editing may be required, but this should start you.
  2. Key Ctrl + Tab to open the Mesh Select Mode menu and either key 2 or select Edge.
  3. Select these edges:

       enter image description here

  1. Key V to Rip the edges.
  2. Select these edges:

       enter image description here

  1. Key V to Rip the edges.
  2. Key Ctrl + Tab to open the Mesh Select Mode menu and either key 3 or select Face.
  3. Key A once to select everything.
  4. Key P to open the Separate menu and select By Loose Parts.
  5. Tab out of Edit Mode.

Note that one reason the separated planes may not look the same as one intact planes is that the separation provided each plane with an additional two subsurf levels, effectively. You would have to turn down the subsurf to 4 on each midget plane to get the midget planes to look the same as one large plane.

Here is the .blend file:

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  • $\begingroup$ Is there any way how I can add Smooth modification to this workflow? When I add Smooth modification and I split my mesh, than it always ends like this c2n.me/3AKshwc.png then I go back to from edit mode $\endgroup$ – user3016214 Jul 31 '16 at 21:12
  • $\begingroup$ @user3016214 Played with it a bit, and the only thing I can think of would be to apply all of the modifiers and then split everything. $\endgroup$ – Shady Puck Aug 1 '16 at 15:39
  • $\begingroup$ This is problem for me, because in this case I will lost my UV and I need those grid UVs because I am using splat map to apply colors to mesh $\endgroup$ – user3016214 Aug 1 '16 at 16:31

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