Unity - Manual: Building a NavMesh
docs.unity3d.com › Manual › nav-BuildingNavMeshNov 20, 2021 · Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info See in Glossary that approximates the walkable surfaces of the level. In Unity, NavMesh generation is handled from the Navigation window (menu: Window > AI > Navigation).