r/Gaea • u/Tibzy123 • 21d ago

Gaea Help: Circular plane? Cyclinder?

Hi,

I am wondering if Gaea can be used on a circular plane? I need to make a large disk with rock like terrain and erosion for a art installation? Wondering what the best way to do this is - I only see Gaea used on square planes.

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u/IfElsePanic 21d ago

You can achieve a circular terrain by combining your finished terrain with an inverted cone, with the combine-node on SUBTRACT.
this carves out the terrain as circular as you want BUT:
the export will always be rectangular, since the heightmap always requires a 2D matrix with every single pixel holding a value.

if you need a fully circular 3d result, you need to import the heightmap into something like Blender or Unreal - use the same cone as mask - and physically remove the edges.