KeyNavigator (3D 1.5.3-pre3-1409021351)

java.lang.Object
- com.sun.j3d.utils.behaviors.keyboard.KeyNavigator

```
public class KeyNavigator
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

Fields
Modifier and Type	Field and Description
`private Vector3d`	`a`
`private static int`	`ALT`
`private Vector3d`	`bwdAcc`
`private Vector3d`	`bwdDrag`
`private double`	`bwdVMax`
`private static int`	`DOWN_ARROW`
`private Vector3d`	`downAcc`
`private Vector3d`	`downDrag`
`private float`	`downRotAngle`
`private double`	`downVMax`
`private Point3d`	`dp`
`private Vector3d`	`dv`
`private Vector3d`	`fwdAcc`
`private Vector3d`	`fwdDrag`
`private double`	`fwdVMax`
`private static int`	`HOME_DIR`
`private static int`	`HOME_NOMINAL`
`private static int`	`KEY_DOWN`
`private int`	`key_state`
`private static int`	`KEY_UP`
`private static int`	`LEFT_ARROW`
`private Vector3d`	`leftAcc`
`private Vector3d`	`leftDrag`
`private float`	`leftRotAngle`
`private double`	`leftVMax`
`private Quat4d`	`lrQuat`
`private Matrix4d`	`mat`
`private static int`	`META`
`private static int`	`MINUS_SIGN`
`private double`	`mmx`
`private int`	`modifier_key_state`
`private Vector3d`	`navVec`
`private Vector3d`	`nda`
`private Transform3D`	`nominal`
`private static int`	`PAGE_DOWN`
`private static int`	`PAGE_UP`
`private static int`	`PLUS_SIGN`
`private static int`	`RIGHT_ARROW`
`private Vector3d`	`rightAcc`
`private Vector3d`	`rightDrag`
`private float`	`rightRotAngle`
`private double`	`rightVMax`
`private static int`	`SHIFT`
`private TransformGroup`	`targetTG`
`private Vector3d`	`temp`
`private long`	`time`
`private Quat4d`	`udQuat`
`private static int`	`UP_ARROW`
`private Vector3d`	`upAcc`
`private Vector3d`	`upDrag`
`private float`	`upRotAngle`
`private double`	`upVMax`
`private Matrix4d`	`vpMatrix`
`private Vector3d`	`vpPos`
`private Quat4d`	`vpQuat`
`private double`	`vpScale`
`private Transform3D`	`vpTrans`

Constructor Summary

Constructors
Constructor and Description

KeyNavigator(TransformGroup targetTG)
Constructs a new key navigator object that operates on the specified transform group.

Constructors
Constructor and Description
`KeyNavigator(TransformGroup targetTG)` Constructs a new key navigator object that operates on the specified transform group.

Method Summary

Methods
Modifier and Type	Method and Description
`private void`	`accKeyAdd(Vector3d a, Vector3d da, Vector3d drag, double scaleVel)`
`private void`	`genRotQuat(double av, int axis, Quat4d q)`
`private 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.
`private void`	`resetVelocity()` Resets the keyboard navigation velocity to 0.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

navVec
```
private Vector3d navVec
```

time
```
private long time
```

fwdAcc
```
private Vector3d fwdAcc
```

bwdAcc
```
private Vector3d bwdAcc
```

leftAcc
```
private Vector3d leftAcc
```

rightAcc
```
private Vector3d rightAcc
```

upAcc
```
private Vector3d upAcc
```

downAcc
```
private Vector3d downAcc
```

fwdDrag
```
private Vector3d fwdDrag
```

bwdDrag
```
private Vector3d bwdDrag
```

leftDrag
```
private Vector3d leftDrag
```

rightDrag
```
private Vector3d rightDrag
```

upDrag
```
private Vector3d upDrag
```

downDrag
```
private Vector3d downDrag
```

fwdVMax
```
private double fwdVMax
```

bwdVMax
```
private double bwdVMax
```

leftVMax
```
private double leftVMax
```

rightVMax
```
private double rightVMax
```

upVMax
```
private double upVMax
```

downVMax
```
private double downVMax
```

leftRotAngle
```
private float leftRotAngle
```

rightRotAngle
```
private float rightRotAngle
```

upRotAngle
```
private float upRotAngle
```

downRotAngle
```
private float downRotAngle
```

mmx
```
private double mmx
```

a
```
private Vector3d a
```

dv
```
private Vector3d dv
```

dp
```
private Point3d dp
```

udQuat
```
private Quat4d udQuat
```

lrQuat
```
private Quat4d lrQuat
```

vpPos
```
private Vector3d vpPos
```

vpScale
```
private double vpScale
```

vpQuat
```
private Quat4d vpQuat
```

vpMatrix
```
private Matrix4d vpMatrix
```

vpTrans
```
private Transform3D vpTrans
```

mat
```
private Matrix4d mat
```

nda
```
private Vector3d nda
```

temp
```
private Vector3d temp
```

nominal
```
private Transform3D nominal
```

targetTG
```
private TransformGroup targetTG
```

UP_ARROW
```
private static final int UP_ARROW
```
See Also:
Constant Field Values

DOWN_ARROW
```
private static final int DOWN_ARROW
```
See Also:
Constant Field Values

LEFT_ARROW
```
private static final int LEFT_ARROW
```
See Also:
Constant Field Values

RIGHT_ARROW
```
private static final int RIGHT_ARROW
```
See Also:
Constant Field Values

PLUS_SIGN
```
private static final int PLUS_SIGN
```
See Also:
Constant Field Values

MINUS_SIGN
```
private static final int MINUS_SIGN
```
See Also:
Constant Field Values

PAGE_UP
```
private static final int PAGE_UP
```
See Also:
Constant Field Values

PAGE_DOWN
```
private static final int PAGE_DOWN
```
See Also:
Constant Field Values

HOME_DIR
```
private static final int HOME_DIR
```
See Also:
Constant Field Values

HOME_NOMINAL
```
private static final int HOME_NOMINAL
```
See Also:
Constant Field Values

SHIFT
```
private static final int SHIFT
```
See Also:
Constant Field Values

ALT
```
private static final int ALT
```
See Also:
Constant Field Values

META
```
private static final int META
```
See Also:
Constant Field Values

KEY_UP
```
private static final int KEY_UP
```
See Also:
Constant Field Values

KEY_DOWN
```
private static final int KEY_DOWN
```
See Also:
Constant Field Values

key_state
```
private int key_state
```

modifier_key_state
```
private int modifier_key_state
```

Constructor Detail
- KeyNavigator
```
public KeyNavigator(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
```
private long getDeltaTime()
```
- genRotQuat
```
private void genRotQuat(double av,
              int axis,
              Quat4d q)
```
- accKeyAdd
```
private void accKeyAdd(Vector3d a,
             Vector3d da,
             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
```
private 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

Class KeyNavigator

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

navVec

time

fwdAcc

bwdAcc

leftAcc

rightAcc

upAcc

downAcc

fwdDrag

bwdDrag

leftDrag

rightDrag

upDrag

downDrag

fwdVMax

bwdVMax

leftVMax

rightVMax

upVMax

downVMax

leftRotAngle

rightRotAngle

upRotAngle

downRotAngle

mmx

a

dv

dp

udQuat

lrQuat

vpPos

vpScale

vpQuat

vpMatrix

vpTrans

mat

nda

temp

nominal

targetTG

UP_ARROW

DOWN_ARROW

LEFT_ARROW

RIGHT_ARROW

PLUS_SIGN

MINUS_SIGN

PAGE_UP

PAGE_DOWN

HOME_DIR

HOME_NOMINAL

SHIFT

ALT

META

KEY_UP

KEY_DOWN

key_state

modifier_key_state

Constructor Detail

KeyNavigator

Method Detail

getDeltaTime

genRotQuat

accKeyAdd

integrateTransformChanges

resetVelocity

processKeyEvent