266 lines
8.8 KiB
Java
266 lines
8.8 KiB
Java
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/*
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File: KeyNavigation.java
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University of Applied Science Berne,HTA-Biel/Bienne,
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Computer Science Department.
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Diploma thesis J3D Solar System Simulator
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Originally written by Marcel Portner & Bernhard Hari (c) 2000
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CVS - Information :
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$Header: /var/cvsreps/projects/c450/2000/sss3d/source_diploma/sss3d/viewbranch/KeyNavigation.java,v 1.12 2000/12/15 02:58:25 portm Exp $
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$Author: portm $
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$Date: 2000/12/15 02:58:25 $
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$State: Exp $
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*/
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package sss3d.viewbranch;
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import sss3d.SolarSystemSimulator;
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import java.awt.AWTEvent;
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import java.util.Enumeration;
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import java.awt.event.*;
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import javax.vecmath.*;
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import javax.media.j3d.*;
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/**
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* This class is a keyboard behavior to control the navigation
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* of the view (camera).
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*
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* @author Marcel Portner & Bernhard Hari
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* @version $Revision: 1.12 $
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*/
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public class KeyNavigation extends Behavior {
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/**
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* The reference to the main class.
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*/
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private SolarSystemSimulator sss3d;
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/**
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* The TransformGroup node to modify by the keyboard interaction.
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*/
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private TransformGroup new_tgView;
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/**
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* Wake up event when a key is pressed.
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*/
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private WakeupOnAWTEvent wakeUp = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
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/**
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* The angle to turn when the directionkeys are pressed
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*/
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private static final float ANGLE = (float) Math.PI / 100;
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/**
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* The step size to move when a direction key is pressed
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*/
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private static final float F1_STEP = 0.01f;
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private static final float F2_STEP = 0.1f;
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private static final float F3_STEP = 1.0f;
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private static final float F4_STEP = 10.0f;
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private float step = F3_STEP;
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private Transform3D t3dView = new Transform3D();
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private Transform3D t3dRot = new Transform3D();
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private Vector3f v3fTrans = new Vector3f();
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private Vector3f v3fTemp = new Vector3f();
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private Matrix3f m3fRot = new Matrix3f();
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/**
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* The turn or move modus
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*/
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private boolean turn = false;
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/**
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* Constructor that allows to specify the desired target transform group.
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*
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* @param targetTG the target transform group
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* @param sss3d reference to the main class
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*/
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public KeyNavigation(TransformGroup targetTG, SolarSystemSimulator sss3d) {
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new_tgView = targetTG;
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this.sss3d = sss3d;
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}
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/**
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* Override Behavior's initialize method to setup wakeup criteria.
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*/
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public void initialize() {
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wakeupOn(wakeUp);
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}
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/**
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* Override Behavior's stimulus method to handle the event.
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* This method is called when a key on the keyboard has been pressed and
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* operates on the specified transform group to move the camera position.
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*
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* @param criteria all pressed keys in a list. This will be passed by the system.
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*/
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public void processStimulus(Enumeration criteria) {
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WakeupOnAWTEvent ev;
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AWTEvent[] events;
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if(criteria.hasMoreElements()) {
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ev = (WakeupOnAWTEvent) criteria.nextElement();
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events = ev.getAWTEvent();
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KeyEvent eventKey = (KeyEvent) events[0];
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int keyCode = eventKey.getKeyCode();
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new_tgView.getTransform(t3dView);
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if(keyCode == KeyEvent.VK_F1) {
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step = F1_STEP;
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.setFactor(1);
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}
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} else if(keyCode == KeyEvent.VK_F2) {
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step = F2_STEP;
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.setFactor(2);
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}
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} else if(keyCode == KeyEvent.VK_F3) {
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step = F3_STEP;
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.setFactor(3);
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}
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} else if(keyCode == KeyEvent.VK_F4) {
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step = F4_STEP;
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.setFactor(4);
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}
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} else if(keyCode == KeyEvent.VK_SPACE) {
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turn = !turn;
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.setNavigationMode();
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}
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} else if(keyCode == KeyEvent.VK_P) {
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if(sss3d.canvas != null) {
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sss3d.canvas.writeJPEG_ = true;
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sss3d.canvas.repaint();
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}
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} else if(keyCode == KeyEvent.VK_G) {
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sss3d.lnkSceneSolarSystem.setAnimation(true, true);
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if(sss3d.lnkInfoBox != null) {
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sss3d.lnkInfoBox.miGo.setEnabled(false);
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sss3d.lnkInfoBox.miStop.setEnabled(true);
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sss3d.lnkInfoBox.miRot.setEnabled(true);
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}
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.startDate();
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}
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} else if(keyCode == KeyEvent.VK_S) {
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sss3d.lnkSceneSolarSystem.setAnimation(false, false);
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if(sss3d.lnkInfoBox != null) {
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sss3d.lnkInfoBox.miGo.setEnabled(true);
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sss3d.lnkInfoBox.miStop.setEnabled(false);
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sss3d.lnkInfoBox.miRot.setEnabled(false);
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}
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if(sss3d.infoPanel != null) {
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sss3d.infoPanel.stopDate();
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}
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} else if(!turn) {
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switch(keyCode) {
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case KeyEvent.VK_UP: // Up arrow - to move up
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f(0.0f, step, 0.0f), v3fTemp);
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v3fTrans.add(v3fTemp); // v3fTemp = result of the product .transform
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_DOWN: // Down arrow - to move down
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f(0.0f, -step, 0.0f), v3fTemp);
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v3fTrans.add(v3fTemp);
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_RIGHT: // Right arrow - to move right
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f( step, 0.0f, 0.0f), v3fTemp);
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v3fTrans.add(v3fTemp);
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_LEFT: // Left arrow - to move left
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f(-step, 0.0f, 0.0f), v3fTemp);
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v3fTrans.add(v3fTemp);
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_PAGE_UP: // Page Up - to move forward
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f(0.0f, 0.0f, -step), v3fTemp);
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v3fTrans.add(v3fTemp);
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_PAGE_DOWN: // Page Down - to move backward
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t3dView.get(v3fTrans);
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t3dView.get(m3fRot);
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m3fRot.transform(new Vector3f(0.0f, 0.0f, step), v3fTemp);
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v3fTrans.add(v3fTemp);
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t3dView.setTranslation(v3fTrans);
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break;
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case KeyEvent.VK_HOME: // Home - go to the start position
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t3dView.setIdentity();
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break;
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default:
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}
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} else {
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switch(keyCode) {
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case KeyEvent.VK_UP: // Up arrow - to turn up
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t3dRot.rotX(-ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_DOWN: // Down arrow - to turn down
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t3dRot.rotX(ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_RIGHT: // Right arrow - to turn right
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t3dRot.rotY(-ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_LEFT: // Left arrow - to turn left
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t3dRot.rotY(ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_PAGE_UP: // Page Up - to turn
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t3dRot.rotZ(-ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_PAGE_DOWN: // Page Down - to turn arround
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t3dRot.rotZ(ANGLE);
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t3dView.mul(t3dRot);
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break;
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case KeyEvent.VK_HOME: // Home - go to the start position
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t3dView.setIdentity();
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break;
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default:
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}
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}
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new_tgView.setTransform(t3dView);
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}
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// Set wakeup criteria for next time.
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wakeupOn(wakeUp);
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}
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}
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