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:

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

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 Details
- 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 Details
- 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 Details

ScaleListener2D

Method Details

initAction

endAction

read

pressed

released

dragged