javax.media.j3d
Class BoundingLeaf

java.lang.Object
  |
  +--javax.media.j3d.SceneGraphObject
        |
        +--javax.media.j3d.Node
              |
              +--javax.media.j3d.Leaf
                    |
                    +--javax.media.j3d.BoundingLeaf

public class BoundingLeaf

extends Leaf

The BoundingLeaf node defines a bounding region object that can be referenced by other nodes to define a region of influence (Fog and Light nodes), an activation region (Background, Clip, and Soundscape nodes), or a scheduling region (Sound and Behavior nodes). The bounding region is defined in the local coordinate system of the BoundingLeaf node. A reference to a BoundingLeaf node can be used in place of a locally defined bounds object for any of the aforementioned regions.

This allows an application to specify a bounding region in one coordinate system (the local coordinate system of the BoundingLeaf node) other than the local coordinate system of the node that references the bounds. For an example of how this might be used, consider a closed room with a number of track lights. Each light can move independent of the other lights and, as such, needs its own local coordinate system. However, the bounding volume is used by all the lights in the boundary of the room, which doesn't move when the lights move. In this example, the BoundingLeaf node allows the bounding region to be defined in the local coordinate system of the room, rather than in the local coordinate system of a particular light. All lights can then share this single bounding volume.

Field Summary

static int	ALLOW_REGION_READ Specifies that this BoundingLeaf node allows read access to its bounding region object.
static int	ALLOW_REGION_WRITE Specifies that this BoundingLeaf node allows write access to its bounding region object.

Fields inherited from class javax.media.j3d.Node

ALLOW_AUTO_COMPUTE_BOUNDS_READ, ALLOW_AUTO_COMPUTE_BOUNDS_WRITE, ALLOW_BOUNDS_READ, ALLOW_BOUNDS_WRITE, ALLOW_COLLIDABLE_READ, ALLOW_COLLIDABLE_WRITE, ALLOW_LOCAL_TO_VWORLD_READ, ALLOW_PICKABLE_READ, ALLOW_PICKABLE_WRITE, ENABLE_COLLISION_REPORTING, ENABLE_PICK_REPORTING

Constructor Summary

BoundingLeaf()
Constructs a BoundingLeaf node with a null (empty) bounding region.

BoundingLeaf(Bounds region)
Constructs a BoundingLeaf node with the specified bounding region.

Method Summary

Node	cloneNode(boolean forceDuplicate) Used to create a new instance of the node.
Bounds	getRegion() Retrieves this BoundingLeaf's bounding region.
void	setRegion(Bounds region) Sets this BoundingLeaf node's bounding region.

Methods inherited from class javax.media.j3d.Node

cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, duplicateNode, getBounds, getBoundsAutoCompute, getCollidable, getLocalToVworld, getLocalToVworld, getParent, getPickable, setBounds, setBoundsAutoCompute, setCollidable, setPickable

Methods inherited from class javax.media.j3d.SceneGraphObject

clearCapability, duplicateSceneGraphObject, getCapability, getUserData, isCompiled, isLive, setCapability, setUserData, updateNodeReferences

Methods inherited from class java.lang.Object

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

Field Detail

ALLOW_REGION_READ

public static final int ALLOW_REGION_READ

Specifies that this BoundingLeaf node allows read access to its bounding region object.

ALLOW_REGION_WRITE

public static final int ALLOW_REGION_WRITE

Specifies that this BoundingLeaf node allows write access to its bounding region object.

Constructor Detail

BoundingLeaf

public BoundingLeaf()

Constructs a BoundingLeaf node with a null (empty) bounding region.

BoundingLeaf

public BoundingLeaf(Bounds region)

Constructs a BoundingLeaf node with the specified bounding region.

Parameters:

region - the bounding region of this leaf node

Method Detail

setRegion

public void setRegion(Bounds region)

Sets this BoundingLeaf node's bounding region.

Parameters:

region - the bounding region of this leaf node

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

getRegion

public Bounds getRegion()

Retrieves this BoundingLeaf's bounding region.

Returns:

the bounding region of this leaf node

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

cloneNode

public Node cloneNode(boolean forceDuplicate)

Used to create a new instance of the node. This routine is called by cloneTree to duplicate the current node.

Overrides:

cloneNode in class Node

Parameters:

forceDuplicate - when set to true, causes the duplicateOnCloneTree flag to be ignored. When false, the value of each node's duplicateOnCloneTree variable determines whether NodeComponent data is duplicated or copied.

See Also:

Node.cloneTree(), Node.cloneNode(boolean), Node.duplicateNode(javax.media.j3d.Node, boolean), NodeComponent.setDuplicateOnCloneTree(boolean)