java.lang.Object
- com.sun.j3d.utils.behaviors.sensor.SensorInputAdaptor
- - com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase
  - - com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ScaleListener2D

All Implemented Interfaces:

SensorButtonListener, SensorReadListener

Enclosing class:

WandViewBehavior
```
public class WandViewBehavior.ScaleListener2D
extends WandViewBehavior.ListenerBase
```
Implements a 2D valuator listener that scales the view platform. Pushing the valuator forwards gives the appearance of the virtual world increasing in size, while pushing the valuator backwards makes the virtual world appear to shrink. The X and Y values from the valuator should have a continuous range from -1.0 to +1.0, although the scale speed can be adjusted to compensate for a different range.
This listener will work in conjunction with a 6DOF sensor if supplied in the constructor. If setTransformCenterSource has been called with the value HOTSPOT, then scaling is about the 6DOF sensor's hotspot; otherwise, the scaling center is the value set by setTransformCenter.

See Also:

WandViewBehavior.setReadAction2D(int), WandViewBehavior.setButtonAction2D(int, int), WandViewBehavior.setScaleSpeed(double, int), WandViewBehavior.setTransformCenter(javax.vecmath.Point3d), WandViewBehavior.setThreshold2D(double), WandViewBehavior.setMatrixIndices2D(int, int)

Field Summary
- Fields inherited from class com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase
  sensorToTracker, sensorToVworld, trackerToVworld, viewPlatformToVworld

Constructor Summary

Constructors
Constructor Description

ScaleListener2D(Sensor sensor2D, Sensor sensor6D)
Construct an instance of this class with the specified sensors.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`dragged(SensorEvent e)`	This method is called with each invocation of the `dispatchEvents` method of `SensorEventAgent` if any button bound to the listener is down and has not changed state since the last invocation.
`protected void`	`endAction(Sensor s)`	Ends the action.
`protected void`	`initAction(Sensor s)`	Initializes the listener action.
`void`	`pressed(SensorEvent e)`	This method is called when a sensor's button is pressed.
`void`	`read(SensorEvent e)`	This method is called each time the `dispatchEvents` method of `SensorEventAgent` is called and none of a sensor's buttons have been handled by a button listener.
`void`	`released(SensorEvent e)`	This method is called when a sensor's button is released.

Methods inherited from class com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase
conditionViewScale, getPhysicalToViewPlatformScale, getPhysicalToVirtualScale, isActive, transformAboutCenter, translateTransform

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

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

- Constructor Detail
  - ScaleListener2D
```
public ScaleListener2D(Sensor sensor2D,
                       Sensor sensor6D)
```
    Construct an instance of this class with the specified sensors.
    
    Parameters:
    
    sensor2D - the 2D valuator whose Y value drive the scaling
    
    sensor6D - the 6DOF sensor to use if the rotation/scale center source is HOTSPOT; may be null
- Method Detail
  - initAction
```
protected void initAction(Sensor s)
```
    Description copied from class: WandViewBehavior.ListenerBase
    
    Initializes the listener action. Subclasses must call this before starting the action, either from pressed or when a 2D valuator exits the deadzone threshold.
    
    Overrides:
    
    initAction in class WandViewBehavior.ListenerBase
    
    Parameters:
    
    s - reference to a 6DOF sensor if used by the listener; may be null
  - endAction
```
protected void endAction(Sensor s)
```
    Description copied from class: WandViewBehavior.ListenerBase
    
    Ends the action. Subclasses must be call this from released or when a 2D valuator enters the deadzone threshold.
    
    Overrides:
    
    endAction in class WandViewBehavior.ListenerBase
    
    Parameters:
    
    s - reference to a 6DOF sensor if used by the listener; may be null
  - read
```
public void read(SensorEvent e)
```
    Description copied from interface: SensorReadListener
    
    This method is called each time the dispatchEvents method of SensorEventAgent is called and none of a sensor's buttons have been handled by a button listener. The sensor read value has not necessarily changed since the last read event.
    
    Specified by:
    
    read in interface SensorReadListener
    
    Overrides:
    
    read in class SensorInputAdaptor
    
    Parameters:
    
    e - the sensor event
  - 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 WandViewBehavior.ListenerBase
    
    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 WandViewBehavior.ListenerBase
    
    Parameters:
    
    e - the sensor event
  - dragged
```
public void dragged(SensorEvent e)
```
    Description copied from interface: SensorButtonListener
    
    This method is called with each invocation of the dispatchEvents method of SensorEventAgent if any button bound to the listener is down and has not changed state since the last invocation. The sensor value has not necessarily changed from the last drag event.
    
    Specified by:
    
    dragged in interface SensorButtonListener
    
    Overrides:
    
    dragged in class SensorInputAdaptor
    
    Parameters:
    
    e - the sensor event

Class WandViewBehavior.ScaleListener2D

Field Summary

Fields inherited from class com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase

Constructor Summary

Method Summary

Methods inherited from class com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase

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

Methods inherited from class java.lang.Object

Constructor Detail

ScaleListener2D

Method Detail

initAction

endAction

read

pressed

released

dragged