Navigation Mesh

The Navigation Mesh is a navigation area which is arranged above the surface of an arbitrary mesh. In fact, the Navigation Mesh is an area of the specified height above the mesh polygons, which is available for pathfinding.

In contrast to navigation sectors, the Navigation Mesh enables the following:

• Only 2D routes can be calculated within the Navigation Mesh.

• Pathfinding can be performed within 1 Navigation Mesh only. Pathfinding within the following areas is not supported:

  • Within several intersecting Navigation Meshes
  • Within the intersecting Navigation Mesh and sector

See also#

Before adding a Navigation Mesh, you should prepare a mesh, on which this Navigation Mesh will be based. Such mesh is created separately and should meet the following requirements:

• Any polygon of the mesh must not share its edge with more than 2 other polygons; otherwise, an error will occur.
• Mesh polygons should be as wide as possible (ideally, they should be equilateral). Too narrow and high polygons may reduce accuracy of path calculation.
• The mesh should be optimized: it should not contain a large number of polygons.

When a mesh is prepared, you can add the Navigation Mesh to the scene via UnigineEditor:

1. Run UnigineEditor.

2. On the Menu bar, click Create -> Navigation -> Navigation Mesh.

   

3. In the file dialog window that opens, choose the required mesh to be used as a base for the new navigation area and click OK.

   

4. Click somewhere in the world to place the Navigation Mesh. A new Navigation Mesh is added to UnigineEditor and you can edit it via the Parameters window.

Example#

In the Node tab of the Parameters window, you can adjust the following parameters of the Navigation Mesh:

Loading a New Mesh#

Saving the Current Mesh#