TileSet / TileMap Terrains - What Does the Middle or Center Bit Do?

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Godot Version

4.2

Question

Hi all, I am trying to figure out in the TileSet Terrains. When you’re painting bits onto your map. What is the purpose of the Center/Middle bit? I can’t seem to figure out what the difference is between turning it on vs off when matching sides, corners, or both. Is it for a more advanced system? Is it if you’re using multiple sets?

I don’t see it explained in the documentation section on tileset terrains either, and I can’t seem to figure out the difference with experimenting either.

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I’m still playing around with tile sets and haven’t completely got my head around it but I think its because you can make edge tiles that will appear where you haven’t painted the terrain and this will appear if the middle dot is not selected.

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Here is a pdf from an archived PR that goes into a lot more detail than the current Godot docs. Information about the center bit is in the first section, “Understanding how terrains work”.

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Just posting here to thank you for that and to ask why isn’t this info into the official documentation? Would the Godot team accept a PR to the docs where this information is cleaned up and able to be put on the terrain chapter of the docs?

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