Class KeyNavigatorEx

java.lang.Object
  |
  +--KeyNavigatorEx

Direct Known Subclasses:

PlayerKeyNavigator

public class KeyNavigatorEx

extends java.lang.Object

This is the KeyNavigator class. It accumulates AWT key events (key press and key release) and computes a new transform based on the accumulated events and elapsed time.

Field Summary

protected javax.vecmath.Vector3d	a
static int	ALT
protected javax.vecmath.Vector3d	bwdAcc
protected javax.vecmath.Vector3d	bwdDrag
protected double	bwdVMax
static int	DOWN_ARROW
protected javax.vecmath.Vector3d	downAcc
protected javax.vecmath.Vector3d	downDrag
protected float	downRotAngle
protected double	downVMax
protected javax.vecmath.Point3d	dp
protected javax.vecmath.Vector3d	dv
protected javax.vecmath.Vector3d	fwdAcc
protected javax.vecmath.Vector3d	fwdDrag
protected double	fwdVMax
static int	HOME_DIR
static int	HOME_NOMINAL
static int	KEY_DOWN
protected int	key_state
static int	KEY_UP
static int	LEFT_ARROW
protected javax.vecmath.Vector3d	leftAcc
protected javax.vecmath.Vector3d	leftDrag
protected float	leftRotAngle
protected double	leftVMax
protected javax.vecmath.Quat4d	lrQuat
protected int	m_Backward
protected int	m_Equals
protected int	m_Forward
protected int	m_Left
protected int	m_Minus
protected int	m_Plus
protected int	m_Right
protected int	m_ViewDown
protected int	m_ViewUp
protected javax.vecmath.Matrix4d	mat
static int	META
static int	MINUS_SIGN
protected double	mmx
protected int	modifier_key_state
protected javax.vecmath.Vector3d	navVec
protected javax.vecmath.Vector3d	nda
protected javax.media.j3d.Transform3D	nominal
static int	PAGE_DOWN
static int	PAGE_UP
static int	PLUS_SIGN
static int	RIGHT_ARROW
protected javax.vecmath.Vector3d	rightAcc
protected javax.vecmath.Vector3d	rightDrag
protected float	rightRotAngle
protected double	rightVMax
static int	SHIFT
protected javax.media.j3d.TransformGroup	targetTG
protected javax.vecmath.Vector3d	temp
protected long	time
protected javax.vecmath.Quat4d	udQuat
static int	UP_ARROW
protected javax.vecmath.Vector3d	upAcc
protected javax.vecmath.Vector3d	upDrag
protected float	upRotAngle
protected double	upVMax
protected javax.vecmath.Matrix4d	vpMatrix
protected javax.vecmath.Vector3d	vpPos
protected javax.vecmath.Quat4d	vpQuat
protected double	vpScale
protected javax.media.j3d.Transform3D	vpTrans

Constructor Summary

KeyNavigatorEx(javax.media.j3d.TransformGroup targetTG)
Constructs a new key navigator object that operates on the specified transform group.

Method Summary

protected void	accKeyAdd(javax.vecmath.Vector3d a, javax.vecmath.Vector3d da, javax.vecmath.Vector3d drag, double scaleVel)
protected void	genRotQuat(double av, int axis, javax.vecmath.Quat4d q)
protected long	getDeltaTime()
void	integrateTransformChanges() Computes a new transform for the next frame based on the current transform, accumulated keyboard inputs, and elapsed time.
void	processKeyEvent(java.awt.event.KeyEvent keyEvent) Processed a keyboard event.
protected void	resetVelocity() Resets the keyboard navigation velocity to 0.
void	setBackwardKey(int iKey)
void	setEqualKey(int iKey)
void	setForwardKey(int iKey)
void	setLeftKey(int iKey)
void	setMinusKey(int iKey)
void	setPlusKey(int iKey)
void	setRightKey(int iKey)
void	setViewDownKey(int iKey)
void	setViewUpKey(int iKey)

Methods inherited from class java.lang.Object

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

Field Detail

navVec

protected javax.vecmath.Vector3d navVec

time

protected long time

fwdAcc

protected javax.vecmath.Vector3d fwdAcc

bwdAcc

protected javax.vecmath.Vector3d bwdAcc

leftAcc

protected javax.vecmath.Vector3d leftAcc

rightAcc

protected javax.vecmath.Vector3d rightAcc

upAcc

protected javax.vecmath.Vector3d upAcc

downAcc

protected javax.vecmath.Vector3d downAcc

fwdDrag

protected javax.vecmath.Vector3d fwdDrag

bwdDrag

protected javax.vecmath.Vector3d bwdDrag

leftDrag

protected javax.vecmath.Vector3d leftDrag

rightDrag

protected javax.vecmath.Vector3d rightDrag

upDrag

protected javax.vecmath.Vector3d upDrag

downDrag

protected javax.vecmath.Vector3d downDrag

fwdVMax

protected double fwdVMax

bwdVMax

protected double bwdVMax

leftVMax

protected double leftVMax

rightVMax

protected double rightVMax

upVMax

protected double upVMax

downVMax

protected double downVMax

leftRotAngle

protected float leftRotAngle

rightRotAngle

protected float rightRotAngle

upRotAngle

protected float upRotAngle

downRotAngle

protected float downRotAngle

mmx

protected double mmx

a

protected javax.vecmath.Vector3d a

dv

protected javax.vecmath.Vector3d dv

dp

protected javax.vecmath.Point3d dp

udQuat

protected javax.vecmath.Quat4d udQuat

lrQuat

protected javax.vecmath.Quat4d lrQuat

vpPos

protected javax.vecmath.Vector3d vpPos

vpScale

protected double vpScale

vpQuat

protected javax.vecmath.Quat4d vpQuat

vpMatrix

protected javax.vecmath.Matrix4d vpMatrix

vpTrans

protected javax.media.j3d.Transform3D vpTrans

mat

protected javax.vecmath.Matrix4d mat

nda

protected javax.vecmath.Vector3d nda

temp

protected javax.vecmath.Vector3d temp

nominal

protected javax.media.j3d.Transform3D nominal

targetTG

protected javax.media.j3d.TransformGroup targetTG

UP_ARROW

public static final int UP_ARROW

DOWN_ARROW

public static final int DOWN_ARROW

LEFT_ARROW

public static final int LEFT_ARROW

RIGHT_ARROW

public static final int RIGHT_ARROW

PLUS_SIGN

public static final int PLUS_SIGN

MINUS_SIGN

public static final int MINUS_SIGN

PAGE_UP

public static final int PAGE_UP

PAGE_DOWN

public static final int PAGE_DOWN

HOME_DIR

public static final int HOME_DIR

HOME_NOMINAL

public static final int HOME_NOMINAL

SHIFT

public static final int SHIFT

ALT

public static final int ALT

META

public static final int META

KEY_UP

public static final int KEY_UP

KEY_DOWN

public static final int KEY_DOWN

key_state

protected int key_state

modifier_key_state

protected int modifier_key_state

m_Forward

protected int m_Forward

m_Backward

protected int m_Backward

m_Left

protected int m_Left

m_Right

protected int m_Right

m_ViewUp

protected int m_ViewUp

m_ViewDown

protected int m_ViewDown

m_Equals

protected int m_Equals

m_Plus

protected int m_Plus

m_Minus

protected int m_Minus

Constructor Detail

KeyNavigatorEx

public KeyNavigatorEx(javax.media.j3d.TransformGroup targetTG)

Constructs a new key navigator object that operates on the specified transform group. All parameters are set to their default, idle state.

Parameters:

targetTG - the target transform group

Method Detail

getDeltaTime

protected long getDeltaTime()

genRotQuat

protected void genRotQuat(double av,
                          int axis,
                          javax.vecmath.Quat4d q)

accKeyAdd

protected void accKeyAdd(javax.vecmath.Vector3d a,
                         javax.vecmath.Vector3d da,
                         javax.vecmath.Vector3d drag,
                         double scaleVel)

integrateTransformChanges

public void integrateTransformChanges()

Computes a new transform for the next frame based on the current transform, accumulated keyboard inputs, and elapsed time. This new transform is written into the target transform group. This method should be called once per frame.

resetVelocity

protected void resetVelocity()

Resets the keyboard navigation velocity to 0.

processKeyEvent

public void processKeyEvent(java.awt.event.KeyEvent keyEvent)

Processed a keyboard event. This routine should be called every time a KEY_PRESSED or KEY_RELEASED event is received.

Parameters:

keyEvent - the AWT key event

setForwardKey

public void setForwardKey(int iKey)

setBackwardKey

public void setBackwardKey(int iKey)

setLeftKey

public void setLeftKey(int iKey)

setRightKey

public void setRightKey(int iKey)

setViewUpKey

public void setViewUpKey(int iKey)

setViewDownKey

public void setViewDownKey(int iKey)

setEqualKey

public void setEqualKey(int iKey)

setPlusKey

public void setPlusKey(int iKey)

setMinusKey

public void setMinusKey(int iKey)