Flying Java 3D - Java 3D Cube Runner Part 5

[Java 3D] Cube Runner Part 5: Viewing the Scene from Above

/* Mykeynavbeh.java * Originally based on code from BackgroundApp.java * @(#)BackgroundApp.java 1.1 00/09/22 14:03 * * portions Copyright (c) 1996-2000 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */
import java.awt.*;
import javax.media.j3d.*;import javax.vecmath.*;
import com.sun.j3d.utils.universe.SimpleUniverse;import com.sun.j3d.utils.universe.PlatformGeometry;import com.sun.j3d.utils.behaviors.keyboard.*;
import com.sun.j3d.loaders.Scene;import com.sun.j3d.utils.geometry.ColorCube;
import java.awt.event.*;
import java.awt.event.KeyListener;import java.awt.event.KeyEvent;
import java.util.*;
import javax.media.j3d.WakeupOnCollisionEntry;import javax.media.j3d.WakeupOnCollisionExit;
import com.sun.j3d.utils.geometry.Text2D;import java.text.SimpleDateFormat;
public class Mykeynavbeh extends Frame implements KeyListener {
private SimpleUniverse universe = null; private Canvas3D canvas = null; private TransformGroup viewtrans = null; private TransformGroup viewtrans_2 = null;
private TransformGroup tg = null; private Transform3D t3d = null; private Transform3D t3dstep = new Transform3D(); private Matrix4d matrix = new Matrix4d();
private float speed = -0.06f; private boolean cstate = true;
private MovingColorCube cCube = null; private Vector3d trans = new Vector3d(); private boolean cfell = false;
private Text2D text2d; private Text2D text2d_2; private boolean inCollision = false; private double angle = -Math.PI / 2;
private static final Point3d USERPOSN = new Point3d(0, 6, 20);
public Mykeynavbeh() { setLayout(new BorderLayout()); GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
canvas = new Canvas3D(config); add("Center", canvas); universe = new SimpleUniverse(canvas);
BranchGroup scene = createSceneGraph(); universe.getViewingPlatform().setNominalViewingTransform();
universe.getViewer().getView().setBackClipDistance(1000.0);
canvas.addKeyListener(this);
universe.addBranchGraph(scene);
viewtrans_2 = universe.getViewingPlatform().getViewPlatformTransform();
Transform3D t3d_vt = new Transform3D(); viewtrans_2.getTransform(t3d_vt);
t3d_vt.lookAt(USERPOSN, new Point3d(0, 0, 0), new Vector3d(0, 1, 0)); t3d_vt.invert();
viewtrans_2.setTransform(t3d_vt); }
private BranchGroup createSceneGraph() { BranchGroup objRoot = new BranchGroup();
BoundingSphere bounds = new BoundingSphere(new Point3d(), 10000.0);
viewtrans = universe.getViewingPlatform().getViewPlatformTransform();
KeyNavigatorBehavior keyNavBeh = new KeyNavigatorBehavior(viewtrans); keyNavBeh.setSchedulingBounds(bounds); PlatformGeometry platformGeom = new PlatformGeometry(); platformGeom.addChild(keyNavBeh); universe.getViewingPlatform().setPlatformGeometry(platformGeom);
objRoot.addChild(createScene()); viewtrans.addChild(createText2D());
Background background = new Background(); background.setColor(1.0f, 1.0f, 1.0f); background.setApplicationBounds(bounds); objRoot.addChild(background);
return objRoot; }
public BranchGroup createScene() {
BranchGroup root = new BranchGroup(); TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D();
t3d.setTranslation(new Vector3d(0.0, -20.0, 0.0)); tg.setTransform(t3d);
tg.addChild(createBase()); tg.addChild(createRndColorCubes()); tg.addChild(createMovingCube());
root.addChild(tg);
root.compile();
return root; }
public BranchGroup createBase() {
BranchGroup root = new BranchGroup(); TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D();
tg.setCollidable(false);
t3d.setTranslation(new Vector3d(0.0, -15.0, 0.0)); tg.setTransform(t3d);
SharedGroup shared = new SharedGroup(); shared.addChild(new ColorCube());
TransformGroup tg_link = null; Transform3D t3d_link = new Transform3D();
for (float x = -180.0f; x <= 180.0f; x += 6.0f) { for (float z = -440.0f; z <= -50.0f; z += 6.0f) {
t3d_link.setScale(3.0); t3d_link.setTranslation(new Vector3d(x, 0.0, z)); t3d_link.setRotation(new AxisAngle4f(0.0f, 0.0f, 1.0f, -1.57f)); tg_link = new TransformGroup(t3d_link);
tg_link.addChild(new Link(shared)); tg.addChild(tg_link); } }
root.addChild(tg);
root.compile();
return root; }
public BranchGroup createRndColorCubes() {
BranchGroup root = new BranchGroup(); TransformGroup tg = new TransformGroup();
SharedGroup shared = new SharedGroup(); shared.addChild(new ColorCube());
TransformGroup tg_link = null; Transform3D t3d_link = new Transform3D();
for (float x = -180.0f; x <= 180.0f; x += 50.0f) { for (float z = -340.0f; z <= 40.0f; z += 20.0f) {
t3d_link.setScale(2.5); t3d_link.setTranslation(new Vector3d(x * Math.random(), -9.5, (z * Math.random() - 100.0))); tg_link = new TransformGroup(t3d_link);
tg_link.addChild(new Link(shared)); tg.addChild(tg_link); } }
root.addChild(tg);
root.compile();
return root; }
private BranchGroup createMovingCube() {
BranchGroup objRoot = new BranchGroup();
tg = new TransformGroup(); t3d = new Transform3D(); // tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
System.out.println("trans.x: " + trans.x); System.out.println("trans.y: " + trans.y); System.out.println("trans.z: " + trans.z);
cCube = new MovingColorCube(); tg.addChild(cCube.tg); tg.addChild(cCube);
CollisionDetector cd = new CollisionDetector(cCube.movCube); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 1000.0); cd.setSchedulingBounds(bounds);
tg.addChild(cd);
objRoot.addChild(tg);
objRoot.compile();
return objRoot;
}
private BranchGroup createText2D() {
BranchGroup objRoot = new BranchGroup();
TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D();
t3d.setTranslation(new Vector3d(-3.5, 18.0, -70.0)); t3d.setRotation(new AxisAngle4f(0.0f, 0.0f, 0.0f, 0.0f)); t3d.setScale(12.0); tg.setTransform(t3d);
TransformGroup tg_2 = new TransformGroup(); Transform3D t3d_2 = new Transform3D();
t3d_2.setTranslation(new Vector3d(-3.5, 15.0, -70.0)); t3d_2.setRotation(new AxisAngle4f(0.0f, 0.0f, 0.0f, 0.0f)); t3d_2.setScale(12.0); tg_2.setTransform(t3d_2);
text2d = new Text2D("", new Color3f(1.0f, 0.1f, 0.1f), "SansSerif", 48, Font.BOLD); text2d_2 = new Text2D("", new Color3f(0.1f, 0.1f, 1.0f), "SansSerif", 48, Font.BOLD);
tg.addChild(text2d); tg_2.addChild(text2d_2); objRoot.addChild(tg); objRoot.addChild(tg_2);
objRoot.compile();
return objRoot;
}
public static void main(String args[]) {
Mykeynavbeh window = new Mykeynavbeh();
window.setSize(800, 600);
window.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } });
window.setVisible(true); }
public void keyTyped(KeyEvent e) { char key = e.getKeyChar();
if (key == 's') {
t3dstep.rotY(-Math.PI / 32); cCube.tg.getTransform(cCube.t3d); cCube.t3d.get(matrix); cCube.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); cCube.t3d.mul(t3dstep); cCube.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); cCube.tg.setTransform(cCube.t3d);
angle -= Math.PI / 32;
}
if (key == 'f') {
t3dstep.rotY(Math.PI / 32); cCube.tg.getTransform(cCube.t3d); cCube.t3d.get(matrix); cCube.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); cCube.t3d.mul(t3dstep); cCube.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); cCube.tg.setTransform(cCube.t3d);
angle += Math.PI / 32;
}
if (key == 'e') { speed -= 0.01f; System.out.println("speed: " + speed); }
}
public void keyReleased(KeyEvent e) { }
public void keyPressed(KeyEvent e) { }
class CollisionDetector extends Behavior { // private boolean inCollision = false; private Shape3D shape;
private WakeupOnCollisionEntry wEnter; private WakeupOnCollisionExit wExit;
public CollisionDetector(Shape3D s) { shape = s; inCollision = false; }
public void initialize() { wEnter = new WakeupOnCollisionEntry(shape); wExit = new WakeupOnCollisionExit(shape); wakeupOn(wEnter); }
public void processStimulus(Enumeration criteria) { inCollision = !inCollision;
if (inCollision) {
text2d.setString("GAME"); text2d_2.setString("OVER!");
cstate = false; cCube.setEnable(cstate); wakeupOn(wExit); } else { wakeupOn(wEnter); } } }
class MovingColorCube extends Behavior {
public TransformGroup tg = null; public Transform3D t3d = null; private WakeupOnElapsedFrames wakeFrame = null;
public ColorCube movCube;
private long start; private long delay; private boolean firstTime = true;
private long current; private long elapsed;
private SimpleDateFormat format = new SimpleDateFormat("mm:ss");
public MovingColorCube() { tg = new TransformGroup(); t3d = new Transform3D();
t3d.setTranslation(new Vector3d(0.0, -11.0, -49.0)); t3d.setRotation(new AxisAngle4f(0.0f, 0.0f, 1.0f, -3.14f)); t3d.setScale(1.0); tg.setTransform(t3d);
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 1000.0); this.setSchedulingBounds(bounds);
start = System.currentTimeMillis(); System.out.println("start: " + start);
movCube = new ColorCube(); tg.addChild(movCube); }
public void initialize() { wakeFrame = new WakeupOnElapsedFrames(0); wakeupOn(wakeFrame); }
public void processStimulus(Enumeration criteria) {
if (!cfell) { t3dstep.set(new Vector3d(0.0, 0.0, speed)); tg.getTransform(t3d); t3d.get(trans); t3d.mul(t3dstep); tg.setTransform(t3d);
current = System.currentTimeMillis(); System.out.println("current: " + current); if (firstTime) { delay = current - start; firstTime = false; } elapsed = current - start - delay; String str = format.format(elapsed);
if (!inCollision) { text2d.setString(str); }
System.out.println("trans.x: " + trans.x); System.out.println("trans.y: " + trans.y); System.out.println("trans.z: " + trans.z);
if ((trans.x <= -184.4) || (trans.x >= 184.4) || (trans.z >= -45.6)) { t3dstep.set(new Vector3d(0.0, 6.0, 0.0)); tg.getTransform(t3d); t3d.mul(t3dstep); tg.setTransform(t3d); cfell = true;
text2d.setString("GAME"); text2d_2.setString("OVER!"); }
double vz = Math.sin(angle); System.out.println("Math.sin(angle): " + Math.sin(angle)); System.out.println("vz: " + vz);
if (trans.z <= -442.0 + speed * vz) { text2d_2.setString("GOAL!");
cstate = false; cCube.setEnable(cstate); } wakeupOn(wakeFrame); } } }}

Page updated

Google Sites

Report abuse