The landscape generator plugin is built on top of the Noise Library. It allows to use noise functions (Perlin, Voronoi) and so on to procedurally generate landscape from blueprints.
Generate your landscape global shape using procedural generation. Then, add more details by hand using UE4 terrain tools to perfectly fit your needs.
Apply material layers on your landscape with procedural functions. You can use the landscape height in order to spawn snow on mountains and grass in plains.
Use seed-based functions to generate forests with many different trees. Add more details with rocks, boulder, moss and more…
For really big environments, a single landscape object might not be enough. That’s why the landscape generator proposes a method to generate tiled terrains. A tiled terrain is a grid of smaller terrains seamlessly connected together.