java.lang.Object
- com.sun.j3d.utils.behaviors.sensor.SensorInputAdaptor
- - com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase

All Implemented Interfaces:

SensorButtonListener, SensorReadListener

Direct Known Subclasses:

WandViewBehavior.GrabViewListener6D, WandViewBehavior.RotationListener2D, WandViewBehavior.RotationListener6D, WandViewBehavior.ScaleListener2D, WandViewBehavior.ScaleListener6D, WandViewBehavior.TranslationListener2D, WandViewBehavior.TranslationListener6D

Enclosing class:

WandViewBehavior
```
public class WandViewBehavior.ListenerBase
extends SensorInputAdaptor
```
A base class for implementing some of this behavior's listeners.

Field Summary

Fields
Modifier and Type	Field	Description
`protected Transform3D`	`sensorToTracker`	The initial transform from sensor coordinates to tracker base coordinates, set by `initAction`.
`protected Transform3D`	`sensorToVworld`	The initial transform from sensor coordinates to virtual world coordinates, set by `initAction`.
`protected Transform3D`	`trackerToVworld`	The initial transform from tracker base coordinates to virtual world coordinates, set by `initAction`.
`protected Transform3D`	`viewPlatformToVworld`	The initial transform from view platform coordinates to virtual world coordinates, set by `initAction`.

Constructor Summary

Constructors
Constructor Description

ListenerBase()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`conditionViewScale(Transform3D viewPlatformToVworld)`	Equalizes the scale factors in the view tranform, which must be congruent.
`protected void`	`endAction(Sensor s)`	Ends the action.
`protected double`	`getPhysicalToViewPlatformScale()`	Gets the scale from physical units to view platform units.
`protected double`	`getPhysicalToVirtualScale()`	Gets the physical to virtual scale.
`protected void`	`initAction(Sensor s)`	Initializes the listener action.
`protected boolean`	`isActive()`	Returns true if the listener is currently active; that is, if `initAction` has been called but not yet `endAction`.
`void`	`pressed(SensorEvent e)`	This method is called when a sensor's button is pressed.
`void`	`released(SensorEvent e)`	This method is called when a sensor's button is released.
`protected void`	`transformAboutCenter(Transform3D target, javax.vecmath.Point3d center, Transform3D transform)`	Transforms the target coordinate system about a center point.
`protected void`	`translateTransform(Transform3D transform, javax.vecmath.Vector3d translation)`	Translates a coordinate system.

Methods inherited from class com.sun.j3d.utils.behaviors.sensor.SensorInputAdaptor
clicked, dragged, read

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - viewPlatformToVworld
```
protected Transform3D viewPlatformToVworld
```
    The initial transform from view platform coordinates to virtual world coordinates, set by initAction.
  - trackerToVworld
```
protected Transform3D trackerToVworld
```
    The initial transform from tracker base coordinates to virtual world coordinates, set by initAction.
  - sensorToVworld
```
protected Transform3D sensorToVworld
```
    The initial transform from sensor coordinates to virtual world coordinates, set by initAction.
  - sensorToTracker
```
protected Transform3D sensorToTracker
```
    The initial transform from sensor coordinates to tracker base coordinates, set by initAction.
- Constructor Detail
  - ListenerBase
```
public ListenerBase()
```
- Method Detail
  - initAction
```
protected void initAction(Sensor s)
```
    Initializes the listener action. Subclasses must call this before starting the action, either from pressed or when a 2D valuator exits the deadzone threshold.
    
    Parameters:
    
    s - reference to a 6DOF sensor if used by the listener; may be null
  - endAction
```
protected void endAction(Sensor s)
```
    Ends the action. Subclasses must be call this from released or when a 2D valuator enters the deadzone threshold.
    
    Parameters:
    
    s - reference to a 6DOF sensor if used by the listener; may be null
  - isActive
```
protected boolean isActive()
```
    Returns true if the listener is currently active; that is, if initAction has been called but not yet endAction.
    
    Returns:
    
    true if the listener is active, false otherwise
  - pressed
```
public void pressed(SensorEvent e)
```
    Description copied from interface: SensorButtonListener
    
    This method is called when a sensor's button is pressed.
    
    Specified by:
    
    pressed in interface SensorButtonListener
    
    Overrides:
    
    pressed in class SensorInputAdaptor
    
    Parameters:
    
    e - the sensor event
  - released
```
public void released(SensorEvent e)
```
    Description copied from interface: SensorButtonListener
    
    This method is called when a sensor's button is released.
    
    Specified by:
    
    released in interface SensorButtonListener
    
    Overrides:
    
    released in class SensorInputAdaptor
    
    Parameters:
    
    e - the sensor event
  - getPhysicalToVirtualScale
```
protected double getPhysicalToVirtualScale()
```
    Gets the physical to virtual scale.
  - getPhysicalToViewPlatformScale
```
protected double getPhysicalToViewPlatformScale()
```
    Gets the scale from physical units to view platform units.
  - translateTransform
```
protected void translateTransform(Transform3D transform,
                                  javax.vecmath.Vector3d translation)
```
    Translates a coordinate system.
    
    Parameters:
    
    transform - the coordinate system to be translated
    
    translation - the vector by which to translate
  - transformAboutCenter
```
protected void transformAboutCenter(Transform3D target,
                                    javax.vecmath.Point3d center,
                                    Transform3D transform)
```
    Transforms the target coordinate system about a center point. This can be used for rotation and scaling.
    
    Parameters:
    
    target - the coordinate system to transform
    
    center - the center point about which to transform
    
    transform - the transform to apply
  - conditionViewScale
```
protected void conditionViewScale(Transform3D viewPlatformToVworld)
```
    Equalizes the scale factors in the view tranform, which must be congruent. If successful, the ViewingPlatform TransformGroup is updated; otherwise, its transform is reset to the home transform. This should be called if multiple incremental scale factors are applied to the view transform.
    
    Parameters:
    
    viewPlatformToVworld - the view transform

Class WandViewBehavior.ListenerBase

Field Summary

Constructor Summary

Method Summary

Methods inherited from class com.sun.j3d.utils.behaviors.sensor.SensorInputAdaptor

Methods inherited from class java.lang.Object

Field Detail

viewPlatformToVworld

trackerToVworld

sensorToVworld

sensorToTracker

Constructor Detail

ListenerBase

Method Detail

initAction

endAction

isActive

pressed

released

getPhysicalToVirtualScale

getPhysicalToViewPlatformScale

translateTransform

transformAboutCenter

conditionViewScale