DecisionTree.Controller (NASA WorldWind)

Type Parameters:

T - the data type of objects associated with tree nodes -- the objects implicitly contained in the tree.

C - the traversal context type.

Enclosing class:

DecisionTree<T,C>
```
public static interface DecisionTree.Controller<T,C>
```
Interface defined by the class user to control traversal.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isTerminal(T o, C context)`	Indicates whether traversal should contine or end at a node.
`boolean`	`isVisible(T o, C context)`	Indicates whether a node is active during traversal.
`T[]`	`split(T o, C context)`	Create a cell's descendant nodes.

- Method Detail
  - isVisible
```
boolean isVisible(T o,
                  C context)
```
    Indicates whether a node is active during traversal.
    
    Parameters:
    
    o - the user-defined object specified at traversal start and examined at each tree nodes.
    
    context - the traversal context.
    
    Returns:
    
    true if the node is active, otherwise false.
  - isTerminal
```
boolean isTerminal(T o,
                   C context)
```
    Indicates whether traversal should contine or end at a node.
    
    Parameters:
    
    o - the user-defined object specified at traversal start and examined at each tree nodes.
    
    context - the traversal context.
    
    Returns:
    
    true if the node is terminal, otherwise false. Traversal continues to descendants if false is returned. otherwise traversal of the node's branch of the tree stops.
  - split
```
T[] split(T o,
          C context)
```
    Create a cell's descendant nodes. Called in order to continue traversal down a branch of the tree from the current node. The returned nodes are visited in the order returned.
    
    Parameters:
    
    o - the user-defined object specified at traversal start and examined at each tree nodes.
    
    context - the traversal context.
    
    Returns:
    
    an array of descendant nodes.