circular terrain possible?

[joe_coke]

I'm trying to see what the best way is to get a circular terrain as opposed to a rectangular one.

TyBoolean works on an extracted mesh, but it does take a bit of time & was wondering if there was a way to "cut the corners off" within tyflow before the mesh extraction?

Is there a way to delete terrain on height? Perhaps some way using the border interpolation to remove, i'm typing out loud really.

[tyFlow]

tyBoolean would be the way to go, yes. Any pre-export geometry culling would use the same routines. As for speed...it's very quick to create a rectangular mesh...much slower to trim its faces to match another shape. That's just the nature of CSG operations.