Flying Java 3D - Java 3D: How to Make a Rider .obj Model Take off and Land

Java 3D: How to Make a Rider .obj Model Take off and Land

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/* 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.loaders.objectfile.ObjectFile;import java.io.*;
import java.awt.event.KeyListener;import java.awt.event.KeyEvent;
import java.util.*;
import java.awt.event.*;
public class Mykeynavbeh extends Frame implements KeyListener {
private SimpleUniverse universe = null; private Canvas3D canvas = null; private TransformGroup viewtrans = null;
private TransformGroup tg = null; private Transform3D t3d = null; private Transform3D t3dstep = new Transform3D(); private Matrix4d matrix = new Matrix4d();
private MovingMScooter mscooter = null; private boolean cstate = false;
private RotationInterpolator rotator; private RotationInterpolator rotator_2;
private Transform3D t3d_vt = new Transform3D();
private Vector3d trans = new Vector3d(); private Vector3d pre_trans = new Vector3d();
private float total_angle_x = 0.0f; private static final double ANGLE_X = Math.PI / 128;
private boolean down = false;
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(100.0);
canvas.addKeyListener(this);
universe.addBranchGraph(scene); }
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(createMScooter()); objRoot.addChild(createApartment());
return objRoot; }
private BranchGroup createMScooter() {
BranchGroup objRoot = new BranchGroup(); tg = new TransformGroup(); t3d = new Transform3D();
// tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
t3d.setTranslation(new Vector3d(0.0, -0.3, -1.9)); // t3d.setRotation(new AxisAngle4f(0.0f, 1.0f, 0.0f, 3.0f)); t3d.setScale(0.1);
tg.setTransform(t3d);
mscooter = new MovingMScooter("model/sitMale&scooter2_wo_wh.obj"); tg.addChild(mscooter.tg); // car.tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
tg.addChild(mscooter);
objRoot.addChild(tg); objRoot.addChild(createLight()); objRoot.addChild(createLight2());
objRoot.compile();
return objRoot;
}
private BranchGroup createWheels() {
BranchGroup objRoot = new BranchGroup();
TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D(); t3d.setTranslation(new Vector3d(-0.2, -0.141, 4.43)); tg.setTransform(t3d);
TransformGroup tg_2 = new TransformGroup(); Transform3D t3d_2 = new Transform3D(); t3d_2.setTranslation(new Vector3d(-0.2, -0.141, -3.4)); tg_2.setTransform(t3d_2);
TransformGroup tg_rot = new TransformGroup(); Transform3D t3d_rot = new Transform3D(); tg_rot.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); tg_rot.addChild(createObjLoad("model/wheel.obj"));
TransformGroup tg_rot_2 = new TransformGroup(); Transform3D t3d_rot_2 = new Transform3D(); tg_rot_2.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); tg_rot_2.addChild(createObjLoad("model/wheel.obj"));
Alpha alpha = new Alpha(-1, 400);
Transform3D axis = new Transform3D(); axis.setRotation(new AxisAngle4f(0.0f, 0.0f, 1.0f, 1.57f));
rotator = new RotationInterpolator(alpha, tg_rot, axis, 0.0f, -(float) Math.PI * (2.0f));
rotator_2 = new RotationInterpolator(alpha, tg_rot_2, axis, 0.0f, -(float) Math.PI * (2.0f));
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 10000.0);
rotator.setSchedulingBounds(bounds); rotator_2.setSchedulingBounds(bounds);
tg_rot.addChild(rotator); tg_rot_2.addChild(rotator_2);
tg.addChild(tg_rot); tg_2.addChild(tg_rot_2);
objRoot.addChild(tg); objRoot.addChild(tg_2);
objRoot.compile();
return objRoot;
}
private BranchGroup createApartment() {
BranchGroup objRoot = new BranchGroup();
TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D();
t3d.setTranslation(new Vector3d(0.0, -0.8, -16.0)); t3d.setScale(2.5); tg.setTransform(t3d);
tg.addChild(createObjLoad("model/apartment2.obj"));
objRoot.addChild(tg); objRoot.addChild(createLight()); objRoot.addChild(createLight2());
objRoot.compile();
return objRoot;
}
private BranchGroup createObjLoad(String filename) {
BranchGroup objRoot = new BranchGroup();
TransformGroup tg = new TransformGroup(); Transform3D t3d = new Transform3D(); t3d.setScale(1.0); tg.setTransform(t3d);
ObjectFile loader = new ObjectFile(); Scene s = null;
File file = new java.io.File(filename);
try { s = loader.load(file.toURI().toURL()); } catch (Exception e) { System.err.println(e); System.exit(1); }
tg.addChild(s.getSceneGroup());
objRoot.addChild(tg);
objRoot.compile();
return objRoot;
}
private Light createLight() { DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f, 1.0f, 1.0f), new Vector3f(-0.3f, 0.2f, -1.0f));
light.setInfluencingBounds(new BoundingSphere(new Point3d(), 10000.0));
return light; }
private Light createLight2() { DirectionalLight light = new DirectionalLight(true, new Color3f(1.0f, 1.0f, 1.0f), new Vector3f(0.3f, -0.2f, 1.0f));
light.setInfluencingBounds(new BoundingSphere(new Point3d(), 10000.0));
return light; }
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 == 'd') && (trans.y <= 0.2)) { cstate = true; mscooter.setEnable(cstate); rotator.setEnable(cstate); rotator_2.setEnable(cstate); }
if ((key == 's') && (trans.y <= 0.2)) {
t3dstep.rotY(Math.PI / 32); mscooter.tg.getTransform(mscooter.t3d); mscooter.t3d.get(matrix); mscooter.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); mscooter.t3d.mul(t3dstep); mscooter.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); mscooter.tg.setTransform(mscooter.t3d);
}
if ((key == 'f') && (trans.y <= 0.2)) {
t3dstep.rotY(-Math.PI / 32); mscooter.tg.getTransform(mscooter.t3d); mscooter.t3d.get(matrix); mscooter.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); mscooter.t3d.mul(t3dstep); mscooter.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); mscooter.tg.setTransform(mscooter.t3d);
}
if (key == 'e') {
cstate = false; rotator.setEnable(cstate); rotator_2.setEnable(cstate);
t3dstep.rotX(-ANGLE_X); mscooter.tg.getTransform(mscooter.t3d); mscooter.t3d.get(matrix); mscooter.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); mscooter.t3d.mul(t3dstep); mscooter.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); mscooter.tg.setTransform(mscooter.t3d);
total_angle_x += -ANGLE_X;
}
if (key == 'c') {
t3dstep.rotX(ANGLE_X); mscooter.tg.getTransform(mscooter.t3d); mscooter.t3d.get(matrix); mscooter.t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); mscooter.t3d.mul(t3dstep); mscooter.t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); mscooter.tg.setTransform(mscooter.t3d);
total_angle_x += ANGLE_X;
}
if ((key == 'x') && (trans.y <= 0.2)) { cstate = false; mscooter.setEnable(cstate); rotator.setEnable(cstate); rotator_2.setEnable(cstate); }
}
public void keyReleased(KeyEvent e) { }
public void keyPressed(KeyEvent e) { }
class MovingMScooter extends Behavior {
public TransformGroup tg = null; public Transform3D t3d = null; private Transform3D t3dstep = new Transform3D(); private WakeupOnElapsedFrames wakeFrame = null;
public MovingMScooter(String filename) {
tg = new TransformGroup(); t3d = new Transform3D();
t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); t3d.setScale(1.0); tg.setTransform(t3d);
tg.addChild(createObjLoad(filename)); tg.addChild(createWheels());
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 1000.0); this.setSchedulingBounds(bounds); }
public void initialize() { wakeFrame = new WakeupOnElapsedFrames(0); wakeupOn(wakeFrame); }
public void processStimulus(Enumeration criteria) {
tg.getTransform(t3d); t3d.get(trans);
t3dstep.set(new Vector3d((trans.x - pre_trans.x) * 0.1, (trans.y - pre_trans.y) * 0.1, (trans.z - pre_trans.z) * 0.1 * 0.7)); viewtrans.getTransform(t3d_vt); t3d_vt.mul(t3dstep); viewtrans.setTransform(t3d_vt);
t3dstep.set(new Vector3d(0.0, 0.0, 0.2f)); tg.getTransform(t3d); t3d.mul(t3dstep); tg.setTransform(t3d);
System.out.println("trans.x: " + trans.x); System.out.println("trans.y: " + trans.y); System.out.println("trans.z: " + trans.z); System.out.println("pre_trans.x: " + pre_trans.x); System.out.println("pre_trans.y: " + pre_trans.y); System.out.println("pre_trans.z: " + pre_trans.z); System.out.println("trans.x - pre_trans.x: " + (trans.x - pre_trans.x)); System.out.println("trans.y - pre_trans.y: " + (trans.y - pre_trans.y)); System.out.println("trans.z - pre_trans.z: " + (trans.z - pre_trans.z));
if ((trans.y - pre_trans.y) >= 0.0) { down = false; } else { down = true; }
pre_trans.x = trans.x; pre_trans.y = trans.y; pre_trans.z = trans.z;
if ((trans.y <= 2.5) && (down == true)) {
t3dstep.rotX(-total_angle_x); tg.getTransform(t3d); t3d.get(matrix); t3d.setTranslation(new Vector3d(0.0, 0.0, 0.0)); t3d.mul(t3dstep); t3d.setTranslation(new Vector3d(matrix.m03, matrix.m13, matrix.m23)); tg.setTransform(t3d);
tg.getTransform(t3d); t3d.get(trans);
t3dstep.set(new Vector3d(0.0, -trans.y, 0.0)); tg.getTransform(t3d); t3d.mul(t3dstep); tg.setTransform(t3d);
total_angle_x = 0.0f;
tg.getTransform(t3d); t3d.get(trans);
down = false;
cstate = true; rotator.setEnable(cstate); rotator_2.setEnable(cstate);
}
wakeupOn(wakeFrame); } }
}

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