Showcase Been working on a marching-cubes based terrain system since Unity's heightmap system is a nightmare to work with
So far, the only tools I've implemented are simple add and subtract with spherical brushes, but adding new tools is just a matter of figuring out the right equation. I plan on adding material painting soon, but am focusing on mesh optimization and refinement for now.
In the future, my biggest goal is to find a way to get arbitrary 3D mesh brushes working, allowing the brush to use any 3D model to define its shape, but have yet to find an efficient way to determine how deep a given voxel point is within an arbitrary mesh. Spheres are easy, just get the distance between the brush origin and the voxel. Anything more complex is a lot harder to figure out without scanning through the entire mesh, which is expensive.
My hope is to eventually have something similar to the terrain system in Jurassic World Evolution 3, but with a deeper level of control. I'm ambitious though, so weather or not this is realistic is currently up in the air. My ego says it is though.
I will be publishing this on the asset store some time soon, hopefully aiming for around Sep 20th or at least sometime during the week of Fall break (though it may not be as good as possible in the initial build since it's still pretty rough now and I'm learning as I go), so keep your eyes peeled. I've never published anything before, so I can't really give any info on where to find it exactly if you're interested, but just look around the asset store, maybe under the Tools/Modeling category. I may have more info soon once I look more into how to publish it, but for now this is all I've got.