Class PhysicalBody

java.lang.Object
javax.media.j3d.PhysicalBody

public class PhysicalBody extends Object
This object contains a specification of the user's head. Attributes of this object are defined in the head coordinate system. The orgin is defined to be halfway between the left and right eye in the plane of the face. The x-axis extends to the right (of the head looking out from the head). The y-axis extends up. The z-axis extends to the rear of the head.
See Also:
  • Constructor Summary

    Constructors
    Constructor
    Description
    Constructs a PhysicalBody object with default parameters.
    PhysicalBody(javax.vecmath.Point3d leftEyePosition, javax.vecmath.Point3d rightEyePosition)
    Constructs and initializes a PhysicalBody object from the specified parameters.
    PhysicalBody(javax.vecmath.Point3d leftEyePosition, javax.vecmath.Point3d rightEyePosition, javax.vecmath.Point3d leftEarPosition, javax.vecmath.Point3d rightEarPosition)
    Constructs and initializes a PhysicalBody object from the specified parameters.
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    Retrieves the head to head-tracker coordinate system transform.
    void
    getLeftEarPosition(javax.vecmath.Point3d position)
    Retrieves the user head object's left ear position and places that value in the specified object.
    void
    getLeftEyePosition(javax.vecmath.Point3d position)
    Retrieves the user head object's left eye position and places that value in the specified object.
    double
    Retrieves the nominal eye height from the ground plane.
    double
    Retrieves the nominal eye offset from the display screen.
    void
    getRightEarPosition(javax.vecmath.Point3d position)
    Retrieves the user head object's right ear position and places that value in the specified object.
    void
    getRightEyePosition(javax.vecmath.Point3d position)
    Retrieves the user head object's right eye position and places that value in the specified object.
    void
    Sets the head to head-tracker coordinate system transform.
    void
    setLeftEarPosition(javax.vecmath.Point3d position)
    Sets the user head object's left ear position.
    void
    setLeftEyePosition(javax.vecmath.Point3d position)
    Sets the user head object's left eye position.
    void
    Sets the nominal eye height from the ground plane.
    void
    Sets the nominal eye offset from the display screen.
    void
    setRightEarPosition(javax.vecmath.Point3d position)
    Sets the user head object's right ear position.
    void
    setRightEyePosition(javax.vecmath.Point3d position)
    Sets the user head object's right eye position.
    Returns a string representation of this PhysicalBody's values.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
  • Constructor Details

    • PhysicalBody

      public PhysicalBody()
      Constructs a PhysicalBody object with default parameters. The default values are as follows:
        left eye position : (-0.033, 0.0, 0.0)
        right eye position : (0.033, 0.0, 0.0)
        left ear position : (-0.080, -0.030, 0.095)
        right ear position : (0.080, -0.030, 0.095)
        nominal eye height from ground : 1.68
        nominal eye offset from nominal screen : 0.4572
        head to head tracker transform : identity
    • PhysicalBody

      public PhysicalBody(javax.vecmath.Point3d leftEyePosition, javax.vecmath.Point3d rightEyePosition)
      Constructs and initializes a PhysicalBody object from the specified parameters.
      Parameters:
      leftEyePosition - the user's left eye position
      rightEyePosition - the user's right eye position
    • PhysicalBody

      public PhysicalBody(javax.vecmath.Point3d leftEyePosition, javax.vecmath.Point3d rightEyePosition, javax.vecmath.Point3d leftEarPosition, javax.vecmath.Point3d rightEarPosition)
      Constructs and initializes a PhysicalBody object from the specified parameters.
      Parameters:
      leftEyePosition - the user's left eye position
      rightEyePosition - the user's right eye position
      leftEarPosition - the user's left ear position
      rightEarPosition - the user's right ear position
  • Method Details

    • toString

      public String toString()
      Returns a string representation of this PhysicalBody's values.
      Overrides:
      toString in class Object
    • getLeftEyePosition

      public void getLeftEyePosition(javax.vecmath.Point3d position)
      Retrieves the user head object's left eye position and places that value in the specified object.
      Parameters:
      position - the object that will receive the left-eye's position in head coordinates
    • setLeftEyePosition

      public void setLeftEyePosition(javax.vecmath.Point3d position)
      Sets the user head object's left eye position.
      Parameters:
      position - the left-eye's position in head coordinates
    • getRightEyePosition

      public void getRightEyePosition(javax.vecmath.Point3d position)
      Retrieves the user head object's right eye position and places that value in the specified object.
      Parameters:
      position - the object that will receive the right-eye's position in head coordinates
    • setRightEyePosition

      public void setRightEyePosition(javax.vecmath.Point3d position)
      Sets the user head object's right eye position.
      Parameters:
      position - the right-eye's position in head coordinates
    • getLeftEarPosition

      public void getLeftEarPosition(javax.vecmath.Point3d position)
      Retrieves the user head object's left ear position and places that value in the specified object.
      Parameters:
      position - the object that will receive the left-ear's position in head coordinates
    • setLeftEarPosition

      public void setLeftEarPosition(javax.vecmath.Point3d position)
      Sets the user head object's left ear position.
      Parameters:
      position - the left-ear's position in head coordinates
    • getRightEarPosition

      public void getRightEarPosition(javax.vecmath.Point3d position)
      Retrieves the user head object's right ear position and places that value in the specified object.
      Parameters:
      position - the object that will receive the right-ear's position in head coordinates
    • setRightEarPosition

      public void setRightEarPosition(javax.vecmath.Point3d position)
      Sets the user head object's right ear position.
      Parameters:
      position - the right-ear's position in head coordinates
    • setNominalEyeHeightFromGround

      public void setNominalEyeHeightFromGround(double height)
      Sets the nominal eye height from the ground plane. This parameter defines the distance from the origin of the user's head (the eyepoint) to the ground. It is used when the view attach policy is NOMINAL_FEET.
      Parameters:
      height - the nominal height of the eye above the ground plane
    • getNominalEyeHeightFromGround

      public double getNominalEyeHeightFromGround()
      Retrieves the nominal eye height from the ground plane.
      Returns:
      the current nominal eye height above the ground plane
    • setNominalEyeOffsetFromNominalScreen

      public void setNominalEyeOffsetFromNominalScreen(double offset)
      Sets the nominal eye offset from the display screen. This parameter defines the distance from the origin of the user's head (the eyepoint), in it's nominal position, to the screen. It is used when the view attach policy is NOMINAL_HEAD or NOMINAL_FEET. This value is overridden to be the actual eyepoint when the window eyepoint policy is RELATIVE_TO_FIELD_OF_VIEW.
      Parameters:
      offset - the nominal offset from the eye to the screen
    • getNominalEyeOffsetFromNominalScreen

      public double getNominalEyeOffsetFromNominalScreen()
      Retrieves the nominal eye offset from the display screen.
      Returns:
      the current nominal offset from the eye to the display screen
    • setHeadToHeadTracker

      public void setHeadToHeadTracker(Transform3D t)
      Sets the head to head-tracker coordinate system transform. If head tracking is enabled, this transform is a calibration constant. If head tracking is not enabled, this transform is not used. This is used in both SCREEN_VIEW and HMD_VIEW modes.
      Parameters:
      t - the new transform
      Throws:
      BadTransformException - if the transform is not rigid
    • getHeadToHeadTracker

      public void getHeadToHeadTracker(Transform3D t)
      Retrieves the head to head-tracker coordinate system transform.
      Parameters:
      t - the object that will receive the transform