| Interface | Description | 
|---|---|
| KdNode.IKdValueFetcher | 
 Interface for hyperplane coordinate value fetchers. 
 | 
| Class | Description | 
|---|---|
| ContinuousSpace2D | 
 Continuous version of 2D space. 
 | 
| DefaultVisionGenerator | 
 Percept generator for moving components. 
 | 
| Grid2D | 
 2D grid environment. 
 | 
| GridController | |
| KdNode | 
 Node for the k-dimensional-tree. 
 | 
| KdNode.KdValueFetcherX | 
 Fetcher for the x-axis values. 
 | 
| KdNode.KdValueFetcherY | 
 Fetcher for the x-axis values. 
 | 
| KdTree | 
 Implementation of a 2D variant of a k-dimensional-tree for spatial separation and searches. 
 | 
| Space2D | 
 General 2D space. 
 |