I got a question from someone via e-mail and I thought this could be useful info to everyone. The question was whether it is possible to render only the navigation mesh. This can result in a clearer outline of the walkable area, especially if your world has rooftops, trees and other meshes that appears in the render but are basically noise when you’re trying to render an outline of the walkable area.
This is certainly possible. To do this, select the CaptureComponent2D on the MapBackground actor and add the “RecastNavMesh-…” actor from your level to the list, like shown here:
Now, only the nav mesh is rendered. 