Package com.sun.j3d.utils.behaviors.vp

Class WandViewBehavior.ListenerBase

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 Details

    • 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 Details

    • ListenerBase

      public ListenerBase()

  • Method Details

    • 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