Package com.sun.j3d.utils.behaviors.vp
Class WandViewBehavior.ScaleListener2D
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
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:
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Field Summary
Fields inherited from class com.sun.j3d.utils.behaviors.vp.WandViewBehavior.ListenerBase
sensorToTracker, sensorToVworld, trackerToVworld, viewPlatformToVworld
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Constructor Summary
ConstructorsConstructorDescriptionScaleListener2D
(Sensor sensor2D, Sensor sensor6D) Construct an instance of this class with the specified sensors. -
Method Summary
Modifier and TypeMethodDescriptionvoid
This method is called with each invocation of thedispatchEvents
method ofSensorEventAgent
if any button bound to the listener is down and has not changed state since the last invocation.protected void
Ends the action.protected void
initAction
(Sensor s) Initializes the listener action.void
This method is called when a sensor's button is pressed.void
read
(SensorEvent e) This method is called each time thedispatchEvents
method ofSensorEventAgent
is called and none of a sensor's buttons have been handled by a button listener.void
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
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Constructor Details
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ScaleListener2D
Construct an instance of this class with the specified sensors.- Parameters:
sensor2D
- the 2D valuator whose Y value drive the scalingsensor6D
- the 6DOF sensor to use if the rotation/scale center source isHOTSPOT
; may benull
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Method Details
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initAction
Description copied from class:WandViewBehavior.ListenerBase
Initializes the listener action. Subclasses must call this before starting the action, either frompressed
or when a 2D valuator exits the deadzone threshold.- Overrides:
initAction
in classWandViewBehavior.ListenerBase
- Parameters:
s
- reference to a 6DOF sensor if used by the listener; may benull
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endAction
Description copied from class:WandViewBehavior.ListenerBase
Ends the action. Subclasses must be call this fromreleased
or when a 2D valuator enters the deadzone threshold.- Overrides:
endAction
in classWandViewBehavior.ListenerBase
- Parameters:
s
- reference to a 6DOF sensor if used by the listener; may benull
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read
Description copied from interface:SensorReadListener
This method is called each time thedispatchEvents
method ofSensorEventAgent
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 interfaceSensorReadListener
- Overrides:
read
in classSensorInputAdaptor
- Parameters:
e
- the sensor event
-
pressed
Description copied from interface:SensorButtonListener
This method is called when a sensor's button is pressed.- Specified by:
pressed
in interfaceSensorButtonListener
- Overrides:
pressed
in classWandViewBehavior.ListenerBase
- Parameters:
e
- the sensor event
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released
Description copied from interface:SensorButtonListener
This method is called when a sensor's button is released.- Specified by:
released
in interfaceSensorButtonListener
- Overrides:
released
in classWandViewBehavior.ListenerBase
- Parameters:
e
- the sensor event
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dragged
Description copied from interface:SensorButtonListener
This method is called with each invocation of thedispatchEvents
method ofSensorEventAgent
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 interfaceSensorButtonListener
- Overrides:
dragged
in classSensorInputAdaptor
- Parameters:
e
- the sensor event
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