Package org.web3d.vrml.renderer.common.nodes.lighting

Class BaseDirectionalLight

java.lang.Object

org.web3d.vrml.renderer.common.nodes.AbstractNode

org.web3d.vrml.renderer.common.nodes.BaseLightNode

org.web3d.vrml.renderer.common.nodes.lighting.BaseDirectionalLight

All Implemented Interfaces:

VRMLNode, FrameStateListener, VRMLChildNodeType, VRMLLightNodeType, VRMLNodeType, VRMLWorldRootChildNodeType

Direct Known Subclasses:

NRDirectionalLight, OGLDirectionalLight

public abstract class BaseDirectionalLight
extends BaseLightNode

Common implementation code of a directional light.

Version:

$Revision: 1.11 $

Author:

Alan Hudson

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	FIELD_DIRECTION	direction field index
protected static final int	LAST_DIRECTIONALLIGHT_INDEX	Index of last field declared
protected static final int	NUM_FIELDS	Number of fields constant
protected float[]	vfDirection	exposedField SFVec3f direction 0 0 -1

Fields inherited from class org.web3d.vrml.renderer.common.nodes.BaseLightNode

FIELD_AMBIENT_INTENSITY, FIELD_COLOR, FIELD_GLOBAL, FIELD_INTENSITY, FIELD_ON, GLOBAL_VERSION_ERR, LAST_LIGHT_INDEX, vfAmbientIntensity, vfColor, vfGlobal, vfIntensity, vfOn

Fields inherited from class org.web3d.vrml.renderer.common.nodes.AbstractNode

errorReporter, FIELD_METADATA, fieldLocalData, hasChanged, inSetup, isDEF, isStatic, LAST_NODE_INDEX, layerIds, nodeName, pMetadata, refCounts, removedLayerIds, stateManager, STATIC_SCENE_GRAPH, vfMetadata, vrmlMajorVersion, vrmlMinorVersion

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseDirectionalLight()	Construct a new default instance of this class.
protected	BaseDirectionalLight(VRMLNodeType node)	Construct a new instance of this node based on the details from the given node.

Method Summary

Modifier and Type	Method	Description
VRMLFieldDeclaration	getFieldDeclaration(int index)	Get the declaration of the field at the given index.
int	getFieldIndex(String fieldName)	Get the index of the given field name.
VRMLFieldData	getFieldValue(int index)	Get the value of a field.
int[]	getNodeFieldIndices()	Get the list of indices that correspond to fields that contain nodes ie MFNode and SFNode).
int	getNumFields()	Get the number of fields.
void	sendRoute(double time, int srcIndex, VRMLNodeType destNode, int destIndex)	Send a routed value from this node to the given destination node.
protected void	setDirection(float[] dir)	Set the direction of the spot light.
void	setValue(int index, float[] value, int numValid)	Set the value of the field at the given index as an array of floats.

Methods inherited from class org.web3d.vrml.renderer.common.nodes.BaseLightNode

copy, getAmbientIntensity, getColor, getGlobal, getIntensity, getOn, getPrimaryType, setAmbientIntensity, setColor, setGlobal, setIntensity, setOn, setValue, setValue

Methods inherited from class org.web3d.vrml.renderer.common.nodes.AbstractNode

addNodeListener, allEventsComplete, checkNodeType, checkSecondaryType, checkSecondaryType, clearRemovedLayerIds, fireFieldChanged, getLayerIds, getMetadataObject, getRefCount, getRemovedLayerIds, getSecondaryType, getUserData, getVRMLNodeName, hasFieldChanged, isDEF, isSetupFinished, notifyExternProtoLoaded, removeNodeListener, setDEF, setErrorReporter, setFrameStateManager, setMetadataObject, setupFinished, setUserData, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setVersion, throwInitOnlyWriteException, throwInputOnlyWriteException, throwInvalidNodeException, throwInvalidProtoException, throwOutputOnlyWriteException, updateRefCount, updateRefs

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.web3d.vrml.nodes.FrameStateListener

allEventsComplete

Methods inherited from interface org.web3d.vrml.lang.VRMLNode

getSecondaryType, getUserData, getVRMLNodeName, isDEF, setErrorReporter, setUserData, setVersion

Methods inherited from interface org.web3d.vrml.nodes.VRMLNodeType

addNodeListener, clearRemovedLayerIds, getLayerIds, getMetadataObject, getRefCount, getRemovedLayerIds, hasFieldChanged, isSetupFinished, notifyExternProtoLoaded, removeNodeListener, setDEF, setFrameStateManager, setMetadataObject, setupFinished, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, updateRefCount

Field Details

FIELD_DIRECTION

protected static final int FIELD_DIRECTION

direction field index

See Also:

• Constant Field Values

LAST_DIRECTIONALLIGHT_INDEX

protected static final int LAST_DIRECTIONALLIGHT_INDEX

Index of last field declared

See Also:

• Constant Field Values

NUM_FIELDS

protected static final int NUM_FIELDS

Number of fields constant

See Also:

• Constant Field Values

vfDirection

protected float[] vfDirection

exposedField SFVec3f direction 0 0 -1

Constructor Details

BaseDirectionalLight

protected BaseDirectionalLight()

Construct a new default instance of this class.

BaseDirectionalLight

protected BaseDirectionalLight(VRMLNodeType node)

Construct a new instance of this node based on the details from the given node. If the node is not a light node, an exception will be thrown.

Parameters:

node - The node to copy

Throws:

IllegalArgumentException - Incorrect Node Type

Method Details

getFieldValue

public VRMLFieldData getFieldValue(int index)
                            throws InvalidFieldException

Get the value of a field. If the field is a primitive type, it will return a class representing the value. For arrays or nodes it will return the instance directly.

Specified by:

getFieldValue in interface VRMLNodeType

Overrides:

getFieldValue in class BaseLightNode

Parameters:

index - The index of the field to change.

Returns:

The class representing the field value

Throws:

InvalidFieldException - The field index is not known

getFieldIndex

public int getFieldIndex(String fieldName)

Get the index of the given field name. If the name does not exist for this node then return a value of -1.

Parameters:

fieldName - The name of the field we want the index from

Returns:

The index of the field name or -1

getNodeFieldIndices

public int[] getNodeFieldIndices()

Get the list of indices that correspond to fields that contain nodes ie MFNode and SFNode). Used for blind scene graph traversal without needing to spend time querying for all fields etc. If a node does not have any fields that contain nodes, this shall return null. The field list covers all field types, regardless of whether they are readable or not at the VRML-level.

Returns:

The list of field indices that correspond to SF/MFnode fields or null if none

getFieldDeclaration

public VRMLFieldDeclaration getFieldDeclaration(int index)

Get the declaration of the field at the given index. This allows for reverse lookup if needed. If the field does not exist, this will give a value of null.

Parameters:

index - The index of the field to get information

Returns:

A representation of this field's information

getNumFields

public int getNumFields()

Get the number of fields.

Returns:

The number of fields.

sendRoute

public void sendRoute(double time,
 int srcIndex,
 VRMLNodeType destNode,
 int destIndex)

Send a routed value from this node to the given destination node. The route should use the appropriate setValue() method of the destination node. It should not attempt to cast the node up to a higher level. Routing should also follow the standard rules for the loop breaking and other appropriate rules for the specification.

Specified by:

sendRoute in interface VRMLNodeType

Overrides:

sendRoute in class BaseLightNode

Parameters:

time - The time that this route occurred (not necessarily epoch time. Should be treated as a relative value only)

srcIndex - The index of the field in this node that the value should be sent from

destNode - The node reference that we will be sending the value to

destIndex - The index of the field in the destination node that the value should be sent to.

setValue

public void setValue(int index,
 float[] value,
 int numValid)
              throws InvalidFieldException,
InvalidFieldValueException

Set the value of the field at the given index as an array of floats. This would be used to set SFColor and SFVec3f field types.

Specified by:

setValue in interface VRMLNodeType

Overrides:

setValue in class BaseLightNode

Parameters:

index - The index of destination field to set

value - The new value to use for the node

numValid - The number of valid values to copy from the array

Throws:

InvalidFieldException - The field index is not known

InvalidFieldValueException - The value provided is not in range or not appropriate for this field

setDirection

protected void setDirection(float[] dir)

Set the direction of the spot light. Should be overridden by derived classes for implementation-specific additions.

Parameters:

dir - The new direction vector to use