Creating a NavMesh

NavMesh is a ground-based system and needs one or more meshes that represent a traversable area to build upon. It can build off of simple geometry or a custom polygon mesh.

Once the meshes are in the scene, generate a NavMesh by creating a new volume via Create > Navigation > NavMesh Volume. A new NavMesh volume will be created, and the NavMesh automatically built on the ground.

NavMesh Bake

There are two ways to access the build settings:

• The Window > Navigation > NavMesh menu item

• Select any NavMeshVolume prim in the Stage and and in the Property panel, go to the NavMesh Volume section. Click on the Edit NavMesh Settings button.

Common Settings	Result
Bake	Rebuild the NavMesh
Cancel All	Cancels building the NavMesh
Auto Rebake	If enabled, upon every stage update the NavMesh will rebuild. WARNING: this can be computationally expensive with large and complex scenes.
Auto Rebake Delay	The time in seconds it takes for the NavMesh to trigger a rebuild after the scene has changed. This is good to use for large and complex scenes.

NavMesh Settings

Nav Mesh Generation Settings	Result
Agent Height	The height of the agent size in scene units. The NavMesh will build only in areas where the agent height will fit.
Agent Radius	The radius of the agent size in scene units.The NavMesh will build a buffer area against objects so that the agent cannot get too close to collide through.
Voxel Ceiling	Sets the maximum difference in height between any two walkable areas stacked on top of each other. If this value is too low, certain areas may become unreachable, but larger values reduce vertical fidelity.

Visualization	Result
Mesh	Displays the NavMesh in viewport
Mesh Outline	Highlights the NavMesh borders in viewport
Voxels Floor	Displays the voxels’s floor in viewport
Voxels Ceiling	Displays the voxels’s ceiling in viewport