org.freehep.j3d.plot
Class KeyNavigator

java.lang.Object
  org.freehep.j3d.plot.KeyNavigator

public class KeyNavigator

extends 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.

Version:

$Id: KeyNavigator.java,v 1.1 2001/05/19 00:11:53 tonyj Exp $

Author:

Joy Kyriakopulos (joyk@fnal.gov)

Source Code:

KeyNavigator.java

Constructor Summary

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

Method Summary

void	integrateTransformChanges() Computes a new transform for the next frame based on the current transform, accumulated keyboard inputs, and elapsed time.
void	processKeyEvent(KeyEvent keyEvent) Processed a keyboard event.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyNavigator

public KeyNavigator(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

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.

processKeyEvent

public void processKeyEvent(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