Package eu.svjatoslav.sixth.e3d.gui

Class UserRelativityTracker

java.lang.Object

eu.svjatoslav.sixth.e3d.gui.UserRelativityTracker

public class UserRelativityTracker
extends Object

Tracks the position of the user in the 3D space.

It can be used to determine the angle between the user and the object. Also, it can be used to determine the distance between the user and the object.

Field Summary

Fields

Modifier and Type	Field	Description
Vertex	center	Points to 0, 0, 0 in object own relative space.
Vertex	down	Points to 0, 10, 0 in object own relative space if orientation tracking is enabled.
Vertex	right	Points to 10, 0, 0 in object own relative space if orientation tracking is enabled.

Constructor Summary

Constructors

Constructor	Description
UserRelativityTracker()

Method Summary

Modifier and Type	Method	Description
void	analyze(TransformsStack transformPipe, RenderingContext renderingContext)
void	enableOrientationTracking()	Initializes the orientation tracking.
double	getAngleXY()	Calculates the angle between the user and the object in the XY plane.
double	getAngleXZ()	Calculates the angle between the user and the object in the XZ plane.
double	getAngleYZ()	Calculates the angle between the user and the object in the YZ plane.
double	getDistanceToUser()	Calculates the distance between the user and the object.
double	proposeSliceFactor()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

center

public Vertex center

Points to 0, 0, 0 in object own relative space.

right

public Vertex right

Points to 10, 0, 0 in object own relative space if orientation tracking is enabled. It is used to determine the angle between the user and the object.

down

public Vertex down

Points to 0, 10, 0 in object own relative space if orientation tracking is enabled. It is used to determine the angle between the user and the object.

Constructor Details

UserRelativityTracker

public UserRelativityTracker()

Method Details

analyze

public void analyze(TransformsStack transformPipe,
 RenderingContext renderingContext)

enableOrientationTracking

public void enableOrientationTracking()

Initializes the orientation tracking. Orientation tracking is used to determine the angle between the user and the object. Orientation tracking is disabled by default and it is optional.

getAngleXY

public double getAngleXY()

Calculates the angle between the user and the object in the XY plane.

Returns:

the angle between the user and the object in the XY plane.

getAngleXZ

public double getAngleXZ()

Calculates the angle between the user and the object in the XZ plane.

Returns:

the angle between the user and the object in the XZ plane.

getAngleYZ

public double getAngleYZ()

Calculates the angle between the user and the object in the YZ plane.

Returns:

the angle between the user and the object in the YZ plane.

getDistanceToUser

public double getDistanceToUser()

Calculates the distance between the user and the object. Distance to the user can be used to determine object detail level.

proposeSliceFactor

public double proposeSliceFactor()