NeighbourFinder (jMonkeyEngine3)

```
public interface NeighbourFinder
```
Used for TerrainQuad to find neighbours that are not part of the same quad tree. Normally TerrainQuads function in a quad tree and use the neighbour methods getRightQuad, getLeftQuad etc. to update LOD values of the terrain (and for some other routines). With this you can have a parent, control or spatial, that manages a group of TerrainQuads by linking them together through these four methods. The general orientation of TerrainQuads and their sub-quads is as such: +-- x+ ----> | | 1 | 3 (quadrants) z+ --+-- | 2 | 4 | \/ Your implementation will still have to manage getHeight, getNormal, and most other Terrain.java interface methods; often by offsetting the XZ coordinate parameters.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`TerrainQuad`	`getDownQuad(TerrainQuad center)` Get the TerrainQuad below the supplied 'center' quad.
`TerrainQuad`	`getLeftQuad(TerrainQuad center)` Get the TerrainQuad to the left of the supplied 'center' quad.
`TerrainQuad`	`getRightQuad(TerrainQuad center)` Get the TerrainQuad to the right of the supplied 'center' quad.
`TerrainQuad`	`getTopQuad(TerrainQuad center)` Get the TerrainQuad above the supplied 'center' quad.

Interface NeighbourFinder