javax.media.j3d
Class SwitchValueInterpolator

java.lang.Object
  javax.media.j3d.SceneGraphObject
      javax.media.j3d.Node
          javax.media.j3d.Leaf
              javax.media.j3d.Behavior
                  javax.media.j3d.Interpolator
                      javax.media.j3d.SwitchValueInterpolator

public class SwitchValueInterpolator
extends Interpolator

SwitchValueInterpolator behavior. This class defines a behavior that modifies the selected child of the target switch node by linearly interpolating between a pair of specified child index values (using the value generated by the specified Alpha object).

Field Summary

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_LOCALE_READ, ALLOW_PARENT_READ, ALLOW_PICKABLE_READ, ALLOW_PICKABLE_WRITE, ENABLE_COLLISION_REPORTING, ENABLE_PICK_REPORTING

Constructor Summary

SwitchValueInterpolator(Alpha alpha, Switch target)
Constructs a SwitchValueInterpolator behavior that varies its target Switch node's child index between 0 and n-1, where n is the number of children in the target Switch node.

SwitchValueInterpolator(Alpha alpha, Switch target, int firstChildIndex, int lastChildIndex)
Constructs a SwitchValueInterpolator behavior that varies its target Switch node's child index between the two values provided.

Method Summary

Node	cloneNode(boolean forceDuplicate) Used to create a new instance of the node.
int	getFirstChildIndex() This method retrieves this interpolator's firstChildIndex.
int	getLastChildIndex() This method retrieves this interpolator's lastSwitchIndex.
Switch	getTarget() This method retrieves this interpolator's target Switch node reference.
void	processStimulus(java.util.Enumeration criteria) This method is invoked by the behavior scheduler every frame.
void	setFirstChildIndex(int firstIndex) This method sets the firstChildIndex for this interpolator.
void	setLastChildIndex(int lastIndex) This method sets the lastChildIndex for this interpolator.
void	setTarget(Switch target) This method sets the target for this interpolator.
void	updateNodeReferences(NodeReferenceTable referenceTable) Callback used to allow a node to check if any nodes referenced by that node have been duplicated via a call to cloneTree.

Methods inherited from class javax.media.j3d.Interpolator

getAlpha, initialize, setAlpha

Methods inherited from class javax.media.j3d.Behavior

getEnable, getNumSchedulingIntervals, getSchedulingBoundingLeaf, getSchedulingBounds, getSchedulingInterval, postId, setEnable, setSchedulingBoundingLeaf, setSchedulingBounds, setSchedulingInterval

Methods inherited from class javax.media.j3d.Node

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

Methods inherited from class javax.media.j3d.SceneGraphObject

clearCapability, clearCapabilityIsFrequent, getCapability, getCapabilityIsFrequent, getName, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setName, setUserData, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SwitchValueInterpolator

public SwitchValueInterpolator(Alpha alpha,
                               Switch target)

Constructs a SwitchValueInterpolator behavior that varies its target Switch node's child index between 0 and n-1, where n is the number of children in the target Switch node.

Parameters:

alpha - the alpha object for this interpolator

target - the Switch node affected by this interpolator

SwitchValueInterpolator

public SwitchValueInterpolator(Alpha alpha,
                               Switch target,
                               int firstChildIndex,
                               int lastChildIndex)

Constructs a SwitchValueInterpolator behavior that varies its target Switch node's child index between the two values provided.

Parameters:

alpha - the alpha object for this interpolator

target - the Switch node affected by this interpolator

firstChildIndex - the index of first child in the Switch node to select

lastChildIndex - the index of last child in the Switch node to select

Method Detail

setFirstChildIndex

public void setFirstChildIndex(int firstIndex)

This method sets the firstChildIndex for this interpolator.

Parameters:

firstIndex - the new index for the first child

getFirstChildIndex

public int getFirstChildIndex()

This method retrieves this interpolator's firstChildIndex.

Returns:

the interpolator's firstChildIndex

setLastChildIndex

public void setLastChildIndex(int lastIndex)

This method sets the lastChildIndex for this interpolator.

Parameters:

lastIndex - the new index for the last child

getLastChildIndex

public int getLastChildIndex()

This method retrieves this interpolator's lastSwitchIndex.

Returns:

the interpolator's maximum scale value

setTarget

public void setTarget(Switch target)

This method sets the target for this interpolator.

Parameters:

target - the target Switch node

getTarget

public Switch getTarget()

This method retrieves this interpolator's target Switch node reference.

Returns:

the interpolator's target Switch node

processStimulus

public void processStimulus(java.util.Enumeration criteria)

This method is invoked by the behavior scheduler every frame. It maps the alpha value that corresponds to the current time into a child index value and updates the specified Switch node with this new child index value.

Specified by:

processStimulus in class Behavior

Parameters:

criteria - an enumeration of the criteria that triggered this stimulus

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)

updateNodeReferences

public void updateNodeReferences(NodeReferenceTable referenceTable)

Callback used to allow a node to check if any nodes referenced by that node have been duplicated via a call to cloneTree. This method is called by cloneTree after all nodes in the sub-graph have been duplicated. The cloned Leaf node's method will be called and the Leaf node can then look up any node references by using the getNewObjectReference method found in the NodeReferenceTable object. If a match is found, a reference to the corresponding Node in the newly cloned sub-graph is returned. If no corresponding reference is found, either a DanglingReferenceException is thrown or a reference to the original node is returned depending on the value of the allowDanglingReferences parameter passed in the cloneTree call.

NOTE: Applications should not call this method directly. It should only be called by the cloneTree method.

Overrides:

updateNodeReferences in class Behavior

Parameters:

referenceTable - a NodeReferenceTableObject that contains the getNewObjectReference method needed to search for new object instances.

See Also:

NodeReferenceTable, Node.cloneTree(), DanglingReferenceException