org.web3d.vrml.nodes
Interface VRMLPickingSensorNodeType

All Superinterfaces:

FrameStateListener, VRMLChildNodeType, VRMLNode, VRMLNodeType, VRMLSensorNodeType, VRMLWorldRootChildNodeType

All Known Subinterfaces:

OGLPickingSensorNodeType

public interface VRMLPickingSensorNodeType
extends VRMLSensorNodeType

A sensor that handles pick intersection tests.

The picking sensor capabilities is an Xj3D extension specification. You can find more details about it at http://www.xj3d.org/extensions/picking.html

Version:

$Revision: 1.6 $

Author:

Justin Couch

Field Summary

static int	BOX_PICK The picking type is box
static int	CONE_PICK The picking type is cone
static int	CYLINDER_PICK The picking type is cylinder
static int	INTERSECT_BOUNDS Intersection test type is BOUNDS
static int	INTERSECT_GEOMETRY Intersection test type is GEOMETRY
static int	LINE_PICK The picking type is line
static int	POINT_PICK The picking type is point
static int	SORT_ALL Sort order is ALL
static int	SORT_ALL_SORTED Sort order is ALL_SORTED
static int	SORT_ANY Sort order is ANY
static int	SORT_CLOSEST Sort order is CLOSEST
static int	SPHERE_PICK The picking type is sphere
static int	UNDEFINED_PICK The picking type is not defined because there isn't a pickGeometry given
static int	VOLUME_PICK The picking type is polytope/volume

Method Summary

int	getIntersectionType() Get the intersection type requested for this node
void	getObjectType(java.lang.String[] val) Fetch the number of object type values in use currently.
VRMLNodeType	getPickingGeometry() Fetch the real node that is being used to pick the geometry.
VRMLNodeType[]	getPickingTargets() Get the list of nodes that are used for the target geometry.
int	getPickingType() Get the picking type that this class represents.
int	getSortOrder() Get the intersection type requested for this node
void	notifyPickChange(int numPicks, VRMLNodeType[] nodes, float[] points, float[] normals, float[] texCoords) Notify the drag sensor that a sensor is currently dragging this device and that it's position and orientation are as given.
void	notifyPickEnd() Notification that this sensor has finished a picking action.
void	notifyPickStart(int numPicks, VRMLNodeType[] nodes, float[] points, float[] normals, float[] texCoords) Notification that this sensor has just been clicked on to start the pick action.
int	numObjectType() Get the current number of valid object type strings.
void	setObjectType(java.lang.String[] types, int numValid) Set the list of picking targets that this object corresponds to.
void	setPickingGeometry(VRMLNodeType geom) Set the goemetry used to perform the picking.

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

getEnabled, getIsActive, setEnabled

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

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

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

getFieldDeclaration, getFieldIndex, getNodeFieldIndices, getNumFields, getPrimaryType, getSecondaryType, getUserData, getVRMLNodeName, isDEF, setErrorReporter, setUserData, setVersion

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

allEventsComplete

Field Detail

UNDEFINED_PICK

static final int UNDEFINED_PICK

The picking type is not defined because there isn't a pickGeometry given

See Also:

Constant Field Values

POINT_PICK

static final int POINT_PICK

The picking type is point

See Also:

Constant Field Values

LINE_PICK

static final int LINE_PICK

The picking type is line

See Also:

Constant Field Values

SPHERE_PICK

static final int SPHERE_PICK

The picking type is sphere

See Also:

Constant Field Values

BOX_PICK

static final int BOX_PICK

The picking type is box

See Also:

Constant Field Values

CONE_PICK

static final int CONE_PICK

The picking type is cone

See Also:

Constant Field Values

CYLINDER_PICK

static final int CYLINDER_PICK

The picking type is cylinder

See Also:

Constant Field Values

VOLUME_PICK

static final int VOLUME_PICK

The picking type is polytope/volume

See Also:

Constant Field Values

SORT_CLOSEST

static final int SORT_CLOSEST

Sort order is CLOSEST

See Also:

Constant Field Values

SORT_ALL

static final int SORT_ALL

Sort order is ALL

See Also:

Constant Field Values

SORT_ALL_SORTED

static final int SORT_ALL_SORTED

Sort order is ALL_SORTED

See Also:

Constant Field Values

SORT_ANY

static final int SORT_ANY

Sort order is ANY

See Also:

Constant Field Values

INTERSECT_BOUNDS

static final int INTERSECT_BOUNDS

Intersection test type is BOUNDS

See Also:

Constant Field Values

INTERSECT_GEOMETRY

static final int INTERSECT_GEOMETRY

Intersection test type is GEOMETRY

See Also:

Constant Field Values

Method Detail

setObjectType

void setObjectType(java.lang.String[] types,
                   int numValid)

Set the list of picking targets that this object corresponds to. These can be an array of strings.

Parameters:

types - The list of object type strings to use

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

numObjectType

int numObjectType()

Get the current number of valid object type strings.

Returns:

a number >= 0

getObjectType

void getObjectType(java.lang.String[] val)

Fetch the number of object type values in use currently.

Parameters:

val - An array to copy the values to

getPickingType

int getPickingType()

Get the picking type that this class represents. A shortcut way of quickly determining the picking strategy to be used by the internal implementation to avoid unnessary calculations.

Returns:

One of the *_PICK constants

getSortOrder

int getSortOrder()

Get the intersection type requested for this node

Returns:

one of the SORT_* constants

getIntersectionType

int getIntersectionType()

Get the intersection type requested for this node

Returns:

one of the INTERSECT_* constants

setPickingGeometry

void setPickingGeometry(VRMLNodeType geom)

Set the goemetry used to perform the picking.

Parameters:

geom - VRMLGeometryNodeType

Throws:

InvalidFieldValueException - The geometry is not acceptable for this picking type.

getPickingGeometry

VRMLNodeType getPickingGeometry()

Fetch the real node that is being used to pick the geometry. This returns the real node that may be buried under one or more proto instances as part of the geometry picking scheme. If the picker is an externproto that hasn't resolved, obviously this will return null.

Returns:

The valid geometry node or null if not set

getPickingTargets

VRMLNodeType[] getPickingTargets()

Get the list of nodes that are used for the target geometry. This can be a internal listing of children. Any node valid entries in the can be set to null.

notifyPickStart

void notifyPickStart(int numPicks,
                     VRMLNodeType[] nodes,
                     float[] points,
                     float[] normals,
                     float[] texCoords)

Notification that this sensor has just been clicked on to start the pick action.

Parameters:

numPicks - The number of items picked in the array

nodes - The geometry that was picked

points - Optional array of points that are the intersection points

normals - Optional array of normals that are the intersection points

texCoords - Optional array of texture coordinates that are the intersection points

notifyPickChange

void notifyPickChange(int numPicks,
                      VRMLNodeType[] nodes,
                      float[] points,
                      float[] normals,
                      float[] texCoords)

Notify the drag sensor that a sensor is currently dragging this device and that it's position and orientation are as given.

Parameters:

numPicks - The number of items picked in the array

nodes - The geometry that was picked

points - Optional array of points that are the intersection points

normals - Optional array of normals that are the intersection points

texCoords - Optional array of texture coordinates that are the intersection points

notifyPickEnd

void notifyPickEnd()

Notification that this sensor has finished a picking action.