Package de.coreengine.rendering.renderable.terrain

Class TerrainNode

java.lang.Object

de.coreengine.rendering.renderable.terrain.TerrainNode

public class TerrainNode
extends Object

Class that represents one node of the terrain quadtree

Author:

Darius Dinger

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TerrainNode.Direction

Constructor Summary

Constructors

Constructor	Description
TerrainNode(TerrainNode parent, TerrainNode.Direction dir, javax.vecmath.Vector2f position, float size, int lod, Terrain terrain)	Creates a new terrain node and sets its position, size and lod

Method Summary

Modifier and Type	Method	Description
TerrainNode[]	getChilds()	Gets all child nodes of this node. If the node is a leaf, the childs will be returned anyway.
TerrainNode.Direction	getDirection()
int	getLod()	Getting the lod level of this specific node
TerrainNode	getNeighboursGeBottom()	Gets the greater or equal bottom neighbour node returns null if its root node or neighbour is smaller
TerrainNode	getNeighboursGeLeft()	Gets the greater or equal left neighbour node returns null if its root node or neighbour is smaller
TerrainNode	getNeighboursGeRight()	Gets the greater or equal right neighbour node returns null if its root node or neighbour is smaller
TerrainNode	getNeighboursGeTop()	Gets the greater or equal top neighbour node returns null if its root node or neighbour is smaller
TerrainNode	getParent()
javax.vecmath.Vector2f	getPosition()	Getting the position/offset of this chunk relative to the terrain (0, 0) coordinate
float	getSize()	Getting the horizontal scaling/size of this terrain node (squared)
boolean	isLeaf()	Is the node a leaf of the tree / has it children?

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TerrainNode

public TerrainNode(TerrainNode parent,
                   TerrainNode.Direction dir,
                   javax.vecmath.Vector2f position,
                   float size,
                   int lod,
                   Terrain terrain)

Creates a new terrain node and sets its position, size and lod

Parameters:

parent - Parent node of this node

dir - Id of the quad in the parent quad

position - Position of the node in world space (x,z)

size - Size / horizontal scale of this terrain node (squared)

lod - Lod level of this node

terrain - Parent terrain instance, this node belongs to

Method Detail

getNeighboursGeTop

public TerrainNode getNeighboursGeTop()

Gets the greater or equal top neighbour node
returns null if its root node or neighbour is smaller

Returns:

Top neighbour node or null

getNeighboursGeBottom

public TerrainNode getNeighboursGeBottom()

Gets the greater or equal bottom neighbour node
returns null if its root node or neighbour is smaller

Returns:

Bottom neighbour node or null

getNeighboursGeLeft

public TerrainNode getNeighboursGeLeft()

Gets the greater or equal left neighbour node
returns null if its root node or neighbour is smaller

Returns:

Left neighbour node or null

getNeighboursGeRight

public TerrainNode getNeighboursGeRight()

Gets the greater or equal right neighbour node
returns null if its root node or neighbour is smaller

Returns:

Right neighbour node or null

isLeaf

public boolean isLeaf()

Is the node a leaf of the tree / has it children?

Returns:

Wether the node is a leaf

getChilds

public TerrainNode[] getChilds()

Gets all child nodes of this node.
If the node is a leaf, the childs will be returned anyway.

Returns:

Child nodes of this node

getSize

public float getSize()

Getting the horizontal scaling/size of this terrain node (squared)

Returns:

Size of this node

getPosition

public javax.vecmath.Vector2f getPosition()

Getting the position/offset of this chunk relative to the terrain (0, 0) coordinate

Returns:

This terrain nodes position

getLod

public int getLod()

Getting the lod level of this specific node

Returns:

Lod level of this node

getDirection

public TerrainNode.Direction getDirection()

Returns:

Dir of the quad in the parent quad

getParent

public TerrainNode getParent()

Returns:

Parent node