Package javax.media.j3d
Class PhysicalBody
- java.lang.Object
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- javax.media.j3d.PhysicalBody
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public class PhysicalBody extends java.lang.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:
View
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Constructor Summary
Constructors Constructor Description PhysicalBody()
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.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
getHeadToHeadTracker(Transform3D t)
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
getNominalEyeHeightFromGround()
Retrieves the nominal eye height from the ground plane.double
getNominalEyeOffsetFromNominalScreen()
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
setHeadToHeadTracker(Transform3D t)
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
setNominalEyeHeightFromGround(double height)
Sets the nominal eye height from the ground plane.void
setNominalEyeOffsetFromNominalScreen(double offset)
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.java.lang.String
toString()
Returns a string representation of this PhysicalBody's values.
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Constructor Detail
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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
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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 positionrightEyePosition
- the user's right eye position
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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 positionrightEyePosition
- the user's right eye positionleftEarPosition
- the user's left ear positionrightEarPosition
- the user's right ear position
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Method Detail
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toString
public java.lang.String toString()
Returns a string representation of this PhysicalBody's values.- Overrides:
toString
in classjava.lang.Object
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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
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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
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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
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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
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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
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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
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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
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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
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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
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getNominalEyeHeightFromGround
public double getNominalEyeHeightFromGround()
Retrieves the nominal eye height from the ground plane.- Returns:
- the current nominal eye height above the ground plane
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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
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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
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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
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getHeadToHeadTracker
public void getHeadToHeadTracker(Transform3D t)
Retrieves the head to head-tracker coordinate system transform.- Parameters:
t
- the object that will receive the transform
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