Java/3D/Object VRML File
Содержание
Java 3D"s built in object loader to load a Lightwave file
<source lang="java">
/********************************************************** Copyright (C) 2001 Daniel Selman First distributed with the book "Java 3D Programming" by Daniel Selman and published by Manning Publications. http://manning.ru/selman This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Authors can be contacted at:
Daniel Selman: daniel@selman.org
If you make changes you think others would like, please contact one of the authors or someone at the www.j3d.org web site.
- /
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.GraphicsConfigTemplate; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.net.URL; import javax.media.j3d.Alpha; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; import javax.media.j3d.AudioDevice; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.Bounds; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.GraphicsConfigTemplate3D; import javax.media.j3d.Group; import javax.media.j3d.Locale; import javax.media.j3d.Material; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Shape3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.ViewPlatform; import javax.media.j3d.VirtualUniverse; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3d; import javax.vecmath.Vector3f; import com.sun.j3d.audioengines.javasound.JavaSoundMixer; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.objectfile.ObjectFile; import com.sun.j3d.utils.applet.MainFrame; /**
- Simple example that illustrates using Java 3D"s
- built in object loader to load a Lightwave file.
- /
public class LoaderTest extends Java3dApplet implements ActionListener {
private static int m_kWidth = 400;
private static int m_kHeight = 400;
public LoaderTest( )
{
initJava3d( );
}
public void actionPerformed( ActionEvent event )
{
}
protected BranchGroup createSceneBranchGroup( )
{
BranchGroup objRoot = super.createSceneBranchGroup( );
// create a TransformGroup to flip the hand onto its end and enlarge it.
TransformGroup objTrans1 = new TransformGroup( );
Transform3D tr = new Transform3D( );
objTrans1.getTransform( tr );
tr.rotX( 90.0 * Math.PI / 180.0 );
tr.setScale( 10.0 );
objTrans1.setTransform( tr );
// create a TransformGroup to rotate the hand
TransformGroup objTrans2 = new TransformGroup( );
objTrans2.setCapability( TransformGroup.ALLOW_TRANSFORM_WRITE );
objTrans2.setCapability( TransformGroup.ALLOW_TRANSFORM_READ );
BoundingSphere bounds = new BoundingSphere( new Point3d( 0.0,0.0,0.0 ), 100.0 );
// create a RotationInterpolator behavior to rotate the hand
Transform3D yAxis = new Transform3D( );
Alpha rotationAlpha = new Alpha( -1, Alpha.INCREASING_ENABLE,
0, 0,
4000, 0, 0,
0, 0, 0 );
RotationInterpolator rotator = new RotationInterpolator( rotationAlpha, objTrans2, yAxis, 0.0f, (float) Math.PI*2.0f );
rotator.setSchedulingBounds( bounds );
objTrans2.addChild( rotator );
// Set up the global lights
Color3f lColor1 = new Color3f( 0.7f, 0.7f, 0.7f );
Vector3f lDir1 = new Vector3f( -1.0f, -1.0f, -1.0f );
Color3f alColor = new Color3f( 0.2f, 0.2f, 0.2f );
AmbientLight aLgt = new AmbientLight( alColor );
aLgt.setInfluencingBounds( bounds );
DirectionalLight lgt1 = new DirectionalLight( lColor1, lDir1 );
lgt1.setInfluencingBounds( bounds );
objRoot.addChild( aLgt );
objRoot.addChild( lgt1 );
// load the object file
Scene scene = null;
Shape3D shape = null;
// read in the geometry information from the data file
ObjectFile objFileloader = new ObjectFile( ObjectFile.RESIZE );
try
{
scene = objFileloader.load( "hand1.obj" );
}
catch ( Exception e )
{
scene = null;
System.err.println( e );
}
if( scene == null )
System.exit( 1 );
// retrieve the Shape3D object from the scene
BranchGroup branchGroup = scene.getSceneGroup( );
shape = (Shape3D) branchGroup.getChild( 0 );
// create an Appearance and Material
Appearance app = new Appearance( );
Color3f objColor = new Color3f( 1.0f, 0.7f, 0.8f );
Color3f black = new Color3f( 0.0f, 0.0f, 0.0f );
app.setMaterial( new Material( objColor, black, objColor, black, 80.0f ) );
// assign the appearance to the Shape
shape.setAppearance( app );
// connect the scenegraph
objTrans2.addChild( scene.getSceneGroup( ) );
objTrans1.addChild( objTrans2 );
objRoot.addChild( objTrans1 );
return objRoot;
}
public static void main( String[] args )
{
LoaderTest loaderTest = new LoaderTest( );
loaderTest.saveCommandLineArguments( args );
new MainFrame( loaderTest, m_kWidth, m_kHeight );
}
}
/*******************************************************************************
* Copyright (C) 2001 Daniel Selman * * First distributed with the book "Java 3D Programming" by Daniel Selman and * published by Manning Publications. http://manning.ru/selman * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html * * Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite * 330, Boston, MA 02111-1307, USA. * * Authors can be contacted at: Daniel Selman: daniel@selman.org * * If you make changes you think others would like, please contact one of the * authors or someone at the www.j3d.org web site. ******************************************************************************/
//***************************************************************************** /**
* Java3dApplet * * Base class for defining a Java 3D applet. Contains some useful methods for * defining views and scenegraphs etc. * * @author Daniel Selman * @version 1.0 */
//***************************************************************************** abstract class Java3dApplet extends Applet {
public static int m_kWidth = 300;
public static int m_kHeight = 300;
protected String[] m_szCommandLineArray = null;
protected VirtualUniverse m_Universe = null;
protected BranchGroup m_SceneBranchGroup = null;
protected Bounds m_ApplicationBounds = null;
// protected com.tornadolabs.j3dtree.Java3dTree m_Java3dTree = null;
public Java3dApplet() {
}
public boolean isApplet() {
try {
System.getProperty("user.dir");
System.out.println("Running as Application.");
return false;
} catch (Exception e) {
}
System.out.println("Running as Applet.");
return true;
}
public URL getWorkingDirectory() throws java.net.MalformedURLException {
URL url = null;
try {
File file = new File(System.getProperty("user.dir"));
System.out.println("Running as Application:");
System.out.println(" " + file.toURL());
return file.toURL();
} catch (Exception e) {
}
System.out.println("Running as Applet:");
System.out.println(" " + getCodeBase());
return getCodeBase();
}
public VirtualUniverse getVirtualUniverse() {
return m_Universe;
}
//public com.tornadolabs.j3dtree.Java3dTree getJ3dTree() {
//return m_Java3dTree;
// }
public Locale getFirstLocale() {
java.util.Enumeration e = m_Universe.getAllLocales();
if (e.hasMoreElements() != false)
return (Locale) e.nextElement();
return null;
}
protected Bounds getApplicationBounds() {
if (m_ApplicationBounds == null)
m_ApplicationBounds = createApplicationBounds();
return m_ApplicationBounds;
}
protected Bounds createApplicationBounds() {
m_ApplicationBounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
return m_ApplicationBounds;
}
protected Background createBackground() {
Background back = new Background(new Color3f(0.9f, 0.9f, 0.9f));
back.setApplicationBounds(createApplicationBounds());
return back;
}
public void initJava3d() {
// m_Java3dTree = new com.tornadolabs.j3dtree.Java3dTree();
m_Universe = createVirtualUniverse();
Locale locale = createLocale(m_Universe);
BranchGroup sceneBranchGroup = createSceneBranchGroup();
ViewPlatform vp = createViewPlatform();
BranchGroup viewBranchGroup = createViewBranchGroup(
getViewTransformGroupArray(), vp);
createView(vp);
Background background = createBackground();
if (background != null)
sceneBranchGroup.addChild(background);
// m_Java3dTree.recursiveApplyCapability(sceneBranchGroup);
// m_Java3dTree.recursiveApplyCapability(viewBranchGroup);
locale.addBranchGraph(sceneBranchGroup);
addViewBranchGroup(locale, viewBranchGroup);
onDoneInit();
}
protected void onDoneInit() {
// m_Java3dTree.updateNodes(m_Universe);
}
protected double getScale() {
return 1.0;
}
public TransformGroup[] getViewTransformGroupArray() {
TransformGroup[] tgArray = new TransformGroup[1];
tgArray[0] = new TransformGroup();
// move the camera BACK a little...
// note that we have to invert the matrix as
// we are moving the viewer
Transform3D t3d = new Transform3D();
t3d.setScale(getScale());
t3d.setTranslation(new Vector3d(0.0, 0.0, -20.0));
t3d.invert();
tgArray[0].setTransform(t3d);
return tgArray;
}
protected void addViewBranchGroup(Locale locale, BranchGroup bg) {
locale.addBranchGraph(bg);
}
protected Locale createLocale(VirtualUniverse u) {
return new Locale(u);
}
protected BranchGroup createSceneBranchGroup() {
m_SceneBranchGroup = new BranchGroup();
return m_SceneBranchGroup;
}
protected View createView(ViewPlatform vp) {
View view = new View();
PhysicalBody pb = createPhysicalBody();
PhysicalEnvironment pe = createPhysicalEnvironment();
AudioDevice audioDevice = createAudioDevice(pe);
if (audioDevice != null) {
pe.setAudioDevice(audioDevice);
audioDevice.initialize();
}
view.setPhysicalEnvironment(pe);
view.setPhysicalBody(pb);
if (vp != null)
view.attachViewPlatform(vp);
view.setBackClipDistance(getBackClipDistance());
view.setFrontClipDistance(getFrontClipDistance());
Canvas3D c3d = createCanvas3D();
view.addCanvas3D(c3d);
addCanvas3D(c3d);
return view;
}
protected PhysicalBody createPhysicalBody() {
return new PhysicalBody();
}
protected AudioDevice createAudioDevice(PhysicalEnvironment pe) {
JavaSoundMixer javaSoundMixer = new JavaSoundMixer(pe);
if (javaSoundMixer == null)
System.out.println("create of audiodevice failed");
return javaSoundMixer;
}
protected PhysicalEnvironment createPhysicalEnvironment() {
return new PhysicalEnvironment();
}
protected float getViewPlatformActivationRadius() {
return 100;
}
protected ViewPlatform createViewPlatform() {
ViewPlatform vp = new ViewPlatform();
vp.setViewAttachPolicy(View.RELATIVE_TO_FIELD_OF_VIEW);
vp.setActivationRadius(getViewPlatformActivationRadius());
return vp;
}
protected Canvas3D createCanvas3D() {
GraphicsConfigTemplate3D gc3D = new GraphicsConfigTemplate3D();
gc3D.setSceneAntialiasing(GraphicsConfigTemplate.PREFERRED);
GraphicsDevice gd[] = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getScreenDevices();
Canvas3D c3d = new Canvas3D(gd[0].getBestConfiguration(gc3D));
c3d.setSize(getCanvas3dWidth(c3d), getCanvas3dHeight(c3d));
return c3d;
}
protected int getCanvas3dWidth(Canvas3D c3d) {
return m_kWidth;
}
protected int getCanvas3dHeight(Canvas3D c3d) {
return m_kHeight;
}
protected double getBackClipDistance() {
return 100.0;
}
protected double getFrontClipDistance() {
return 1.0;
}
protected BranchGroup createViewBranchGroup(TransformGroup[] tgArray,
ViewPlatform vp) {
BranchGroup vpBranchGroup = new BranchGroup();
if (tgArray != null && tgArray.length > 0) {
Group parentGroup = vpBranchGroup;
TransformGroup curTg = null;
for (int n = 0; n < tgArray.length; n++) {
curTg = tgArray[n];
parentGroup.addChild(curTg);
parentGroup = curTg;
}
tgArray[tgArray.length - 1].addChild(vp);
} else
vpBranchGroup.addChild(vp);
return vpBranchGroup;
}
protected void addCanvas3D(Canvas3D c3d) {
setLayout(new BorderLayout());
add(c3d, BorderLayout.CENTER);
doLayout();
}
protected VirtualUniverse createVirtualUniverse() {
return new VirtualUniverse();
}
protected void saveCommandLineArguments(String[] szArgs) {
m_szCommandLineArray = szArgs;
}
protected String[] getCommandLineArguments() {
return m_szCommandLineArray;
}
}
//File: hand1.obj /*
- Mon Jun 02 17:09:33 1997
g hand1 v -0.551223 0.307562 -3.946050 v -0.215465 0.030475 -3.703516 v -0.059140 0.068255 -1.551531 v -0.487235 0.455792 -4.006029 v -0.168743 0.090975 -3.755638 v -0.338689 0.569450 -4.244848 v -0.639211 0.502297 -4.165243 v -0.760687 0.647871 -4.482797 v -0.529792 0.073768 -3.945949 v -0.707612 0.258064 -4.192451 v -0.866004 0.446161 -4.511733 v -0.367733 -0.147323 -4.191223 v -0.717413 0.071719 -4.433171 v -0.893823 0.253971 -4.589350 v -0.172976 -0.188212 -3.754734 v -0.089148 -0.103984 -1.450071 v -0.234491 -0.100206 -3.756646 v -0.131305 -0.032994 -1.531782 v -0.589492 0.641054 -4.376035 v -0.050594 -0.257375 -4.417058 v 0.208857 -0.205637 -4.768191 v 0.007882 -0.231806 -4.028160 v 0.230232 -0.186379 -4.335583 v 0.390435 -0.043258 -4.060836 v 0.002626 -0.129308 -1.430840 v -0.058465 -0.217994 -3.717670 v 0.087189 -0.100005 -1.425612 v 0.044163 -0.171797 -3.707954 v 0.044240 0.657156 -4.536777 v -0.137070 0.604272 -4.344090 v 0.041139 0.604901 -4.118776 v -0.080844 0.531805 -3.993031 v 0.165095 0.484110 -3.906230 v -0.081629 0.087632 -3.782753 v -0.013872 0.088823 -1.554481 v 0.008630 0.041677 -3.708195 v 0.070162 0.059225 -1.467241 v 0.349126 0.784380 -4.327246 v 0.192656 0.707311 -4.316467 v 0.240026 0.669896 -4.092967 v 0.614077 0.770599 -4.245997 v 0.448901 0.789330 -4.242595 v 0.390683 0.635870 -4.050064 v 0.823568 1.030378 -5.230011 v 0.583262 0.935220 -4.789198 v 0.936485 1.075914 -5.144932 v 0.708930 0.972489 -4.713959 v 1.079595 1.050653 -5.079602 v 0.863290 0.942616 -4.657226 v 0.731356 0.950572 -5.335061 v 0.698927 0.816156 -5.569689 v 0.452954 0.862935 -4.860037 v 0.354245 0.777679 -5.103039 v 0.109515 -0.020305 -1.439012 v 0.321579 0.190660 -3.847763 v 0.056950 -0.068344 -3.678991 v 0.551677 0.397382 -4.027330 v 0.748943 0.261978 -4.201552 v 0.797463 0.611225 -4.241810 v 0.934536 0.472987 -4.298673 v 0.919641 0.370477 -5.597496 v 1.079582 0.375487 -5.341094 v 1.225601 0.456396 -5.207421 v 0.593068 0.043314 -5.202118 v 0.711852 0.101000 -4.865152 v 0.871615 0.211454 -4.690717 v 1.063296 0.399320 -4.647913 v 1.342637 0.585582 -5.122607 v 1.150690 0.608137 -4.641154 v 1.366648 0.748651 -5.071675 v 0.745367 0.246406 -5.988852 v 0.494019 -0.022198 -5.740361 v 0.141480 -0.193021 -5.470416 v 0.693354 0.148862 -6.455598 v 0.458179 -0.058425 -6.342125 v 0.092861 -0.121753 -6.334044 v 0.001903 0.615014 -5.359071 v 0.310613 0.694999 -5.659912 v 0.602326 0.700149 -5.960638 v 0.014377 0.478587 -6.304075 v 0.335968 0.619833 -6.312831 v 0.600780 0.612337 -6.446789 v -0.303419 0.594566 -6.098518 v -0.599974 0.655996 -6.132385 v -0.241202 0.626083 -5.200386 v -0.457099 0.677790 -5.161324 v -0.259616 -0.163854 -6.116562 v -0.183392 -0.223625 -5.241480 v -0.635209 0.061396 -6.121774 v -0.504788 -0.103060 -5.122423 v -0.950019 0.234128 -5.837874 v -0.810067 0.092804 -5.080121 v -1.144829 0.478824 -5.746136 v -0.998398 0.334709 -5.084644 v -0.994164 0.856674 -5.773610 v -0.863354 0.756330 -5.102725 v -0.801998 0.842826 -5.870856 v -0.671650 0.764754 -5.123487 v 1.045049 0.802118 -4.632644 v 1.252493 0.924338 -5.055513 v -0.995449 0.583125 -5.083862 v -1.137996 0.713069 -5.735577 v 1.598002 0.816988 -5.564189 v 1.599381 0.700758 -5.624741 v 1.532017 0.614642 -5.716787 v 1.715526 0.933794 -5.717422 v 1.699604 0.816034 -5.787023 v 1.629737 0.731598 -5.898082 v 1.883043 1.059492 -5.899169 v 1.855109 0.932664 -5.998640 v 1.774384 0.842472 -6.140775 v 1.424351 0.559021 -5.523375 v 1.505227 0.658051 -5.434678 v 1.502338 0.787710 -5.373565 v 1.297397 0.577850 -5.903827 v 1.425129 0.560695 -5.822476 v 1.155962 0.509306 -5.718982 v 1.300644 0.494656 -5.623770 v 1.509245 0.835318 -6.384689 v 1.646807 0.801147 -6.286009 v 1.406474 0.713747 -6.133959 v 1.525574 0.687385 -6.031679 v 1.380351 1.065119 -5.565239 v 1.564172 1.172023 -5.714888 v 1.780605 1.304970 -5.893034 v 1.255719 1.087198 -5.619839 v 1.438416 1.182678 -5.766468 v 1.652418 1.312790 -5.952035 v 1.154437 1.043031 -5.702960 v 1.320461 1.134701 -5.855917 v 1.512782 1.262635 -6.051604 v 1.003945 1.036752 -5.521133 v 1.104476 1.081637 -5.435655 v 1.236055 1.056913 -5.374795 v 1.089111 0.843044 -5.888583 v 1.089661 0.962064 -5.803318 v 1.230625 0.966122 -6.097103 v 1.242952 1.066407 -5.981094 v 1.362597 1.098246 -6.323909 v 1.405432 1.196541 -6.191591 v 0.929064 0.824679 -5.709339 v 0.934340 0.953520 -5.615597 v 1.859089 1.203879 -5.868989 v 1.664971 1.072200 -5.695913 v 1.510868 0.957577 -5.544997 v 1.391678 0.940769 -5.352942 v 1.170557 0.692380 -5.926214 v 1.027666 0.653090 -5.757548 v 0.869972 0.619560 -5.748698 v 1.295478 0.827279 -6.155195 v 1.403801 0.956111 -6.395917 v 1.981874 0.878914 -6.465936 v 1.802272 0.826665 -6.577847 v 1.615752 0.851027 -6.620514 v 2.128560 0.944598 -6.721747 v 1.907593 0.869058 -6.790360 v 1.708489 0.849226 -6.769275 v 2.238363 1.116521 -6.349912 v 2.094190 1.105140 -6.141595 v 2.237261 1.035889 -6.535950 v 2.075505 0.976585 -6.291769 v 1.727506 1.346013 -6.328338 v 1.936762 1.311864 -6.600124 v 1.576315 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- 281 vertices
- 0 texture vertices
- 0 normals
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- 552 elements
- /
</source>
Loading a VRML file
<source lang="java">
/**********************************************************
Copyright (C) 2001 Daniel Selman First distributed with the book "Java 3D Programming" by Daniel Selman and published by Manning Publications. http://manning.ru/selman This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Authors can be contacted at: Daniel Selman: daniel@selman.org If you make changes you think others would like, please contact one of the authors or someone at the www.j3d.org web site. **************************************************************/
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Cursor; import java.awt.GraphicsConfigTemplate; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.File; import java.net.MalformedURLException; import java.net.URL; import java.util.Hashtable; import javax.media.j3d.AmbientLight; import javax.media.j3d.AudioDevice; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.Bounds; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.GraphicsConfigTemplate3D; import javax.media.j3d.Group; import javax.media.j3d.Locale; import javax.media.j3d.Morph; import javax.media.j3d.Node; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; import javax.media.j3d.SceneGraphObject; import javax.media.j3d.Shape3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.ViewPlatform; import javax.media.j3d.VirtualUniverse; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3d; import com.sun.j3d.audioengines.javasound.JavaSoundMixer; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.vrml97.VrmlLoader; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.mouse.MouseRotate; import com.sun.j3d.utils.behaviors.mouse.MouseTranslate; import com.sun.j3d.utils.behaviors.mouse.MouseZoom; import com.sun.j3d.utils.picking.PickCanvas; import com.sun.j3d.utils.picking.PickResult; import com.sun.j3d.utils.picking.PickTool; /**
* This example loads a VRML file, automatically computes the view point to view * the objects in the file, and then mouse picks. For each pick all the selected * components of the scene are reported (by their VRML name). The VRML scene can * be rotates, scaled and translated using the mouse. */
public class VrmlPickingTest extends Java3dApplet implements MouseListener {
PickCanvas pickCanvas = null;
public VrmlPickingTest() {
}
public VrmlPickingTest(String[] args) {
saveCommandLineArguments(args);
initJava3d();
}
public void start() {
if (pickCanvas == null)
initJava3d();
}
protected void addCanvas3D(Canvas3D c3d) {
setLayout(new BorderLayout());
add(c3d, BorderLayout.CENTER);
doLayout();
if (m_SceneBranchGroup != null) {
c3d.addMouseListener(this);
pickCanvas = new PickCanvas(c3d, m_SceneBranchGroup);
pickCanvas.setMode(PickTool.GEOMETRY_INTERSECT_INFO);
pickCanvas.setTolerance(4.0f);
}
c3d.setCursor(new Cursor(Cursor.HAND_CURSOR));
}
public TransformGroup[] getViewTransformGroupArray() {
TransformGroup[] tgArray = new TransformGroup[1];
tgArray[0] = new TransformGroup();
Transform3D viewTrans = new Transform3D();
Transform3D eyeTrans = new Transform3D();
BoundingSphere sceneBounds = (BoundingSphere) m_SceneBranchGroup
.getBounds();
// point the view at the center of the object
Point3d center = new Point3d();
sceneBounds.getCenter(center);
double radius = sceneBounds.getRadius();
Vector3d temp = new Vector3d(center);
viewTrans.set(temp);
// pull the eye back far enough to see the whole object
double eyeDist = 1.4 * radius / Math.tan(Math.toRadians(40) / 2.0);
temp.x = 0.0;
temp.y = 0.0;
temp.z = eyeDist;
eyeTrans.set(temp);
viewTrans.mul(eyeTrans);
// set the view transform
tgArray[0].setTransform(viewTrans);
return tgArray;
}
protected BranchGroup createSceneBranchGroup() {
BranchGroup objRoot = super.createSceneBranchGroup();
Bounds lightBounds = getApplicationBounds();
AmbientLight ambLight = new AmbientLight(true, new Color3f(1.0f, 1.0f,
1.0f));
ambLight.setInfluencingBounds(lightBounds);
objRoot.addChild(ambLight);
DirectionalLight headLight = new DirectionalLight();
headLight.setInfluencingBounds(lightBounds);
objRoot.addChild(headLight);
TransformGroup mouseGroup = createMouseBehaviorsGroup();
String vrmlFile = null;
try {
URL codebase = getWorkingDirectory();
vrmlFile = codebase.toExternalForm() + "BoxConeSphere.wrl";
} catch (Exception e) {
e.printStackTrace();
}
if (m_szCommandLineArray != null) {
switch (m_szCommandLineArray.length) {
case 0:
break;
case 1:
vrmlFile = m_szCommandLineArray[0];
break;
default:
System.err.println("Usage: VrmlPickingTest [pathname|URL]");
System.exit(-1);
}
}
BranchGroup sceneRoot = loadVrmlFile(vrmlFile);
if (sceneRoot != null)
mouseGroup.addChild(sceneRoot);
objRoot.addChild(mouseGroup);
return objRoot;
}
private TransformGroup createMouseBehaviorsGroup() {
TransformGroup examineGroup = new TransformGroup();
examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Bounds behaviorBounds = getApplicationBounds();
MouseRotate mr = new MouseRotate(examineGroup);
mr.setSchedulingBounds(behaviorBounds);
examineGroup.addChild(mr);
MouseTranslate mt = new MouseTranslate(examineGroup);
mt.setSchedulingBounds(behaviorBounds);
examineGroup.addChild(mt);
MouseZoom mz = new MouseZoom(examineGroup);
mz.setSchedulingBounds(behaviorBounds);
examineGroup.addChild(mz);
return examineGroup;
}
private BranchGroup loadVrmlFile(String location) {
BranchGroup sceneGroup = null;
Scene scene = null;
VrmlLoader loader = new VrmlLoader();
try {
URL loadUrl = new URL(location);
try {
// load the scene
scene = loader.load(new URL(location));
} catch (Exception e) {
System.out.println("Exception loading URL:" + e);
e.printStackTrace();
}
} catch (MalformedURLException badUrl) {
// location may be a path name
try {
// load the scene
scene = loader.load(location);
} catch (Exception e) {
System.out.println("Exception loading file from path:" + e);
e.printStackTrace();
}
}
if (scene != null) {
// get the scene group
sceneGroup = scene.getSceneGroup();
sceneGroup.setCapability(BranchGroup.ALLOW_BOUNDS_READ);
sceneGroup.setCapability(BranchGroup.ALLOW_CHILDREN_READ);
Hashtable namedObjects = scene.getNamedObjects();
System.out.println("*** Named Objects in VRML file: \n"
+ namedObjects);
// recursively set the user data here
// so we can find our objects when they are picked
java.util.Enumeration enumValues = namedObjects.elements();
java.util.Enumeration enumKeys = namedObjects.keys();
if (enumValues != null) {
while (enumValues.hasMoreElements() != false) {
Object value = enumValues.nextElement();
Object key = enumKeys.nextElement();
recursiveSetUserData(value, key);
}
}
}
return sceneGroup;
}
// method to recursively set the user data for objects in the scenegraph
// tree
// we also set the capabilites on Shape3D and Morph objects required by the
// PickTool
void recursiveSetUserData(Object value, Object key) {
if (value instanceof SceneGraphObject != false) {
// set the user data for the item
SceneGraphObject sg = (SceneGraphObject) value;
sg.setUserData(key);
// recursively process group
if (sg instanceof Group) {
Group g = (Group) sg;
// recurse on child nodes
java.util.Enumeration enumKids = g.getAllChildren();
while (enumKids.hasMoreElements() != false)
recursiveSetUserData(enumKids.nextElement(), key);
} else if (sg instanceof Shape3D || sg instanceof Morph) {
PickTool.setCapabilities((Node) sg, PickTool.INTERSECT_FULL);
}
}
}
// rewritten to check for user data
public void mouseClicked(MouseEvent e) {
System.out.println("*** MouseClick ***");
pickCanvas.setShapeLocation(e);
PickResult[] results = pickCanvas.pickAllSorted();
if (results != null) {
for (int n = 0; n < results.length; n++) {
PickResult pickResult = results[n];
System.out
.println("Sorted PickResult " + n + ": " + pickResult);
Node actualNode = pickResult.getObject();
if (actualNode.getUserData() != null) {
System.out.println("Sorted Object " + n + ": "
+ actualNode.getUserData());
}
}
}
PickResult pickResult = pickCanvas.pickClosest();
if (pickResult != null) {
System.out.println("Closest PickResult: " + pickResult);
Node actualNode = pickResult.getObject();
if (actualNode.getUserData() != null) {
System.out.println("Closest Object: "
+ actualNode.getUserData());
}
}
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public static void main(String[] args) {
System.out.println("Current user.dir: "
+ System.getProperty("user.dir"));
VrmlPickingTest pickingTest = new VrmlPickingTest(args);
new MainFrame(pickingTest, 400, 400);
}
} /*******************************************************************************
* Copyright (C) 2001 Daniel Selman * * First distributed with the book "Java 3D Programming" by Daniel Selman and * published by Manning Publications. http://manning.ru/selman * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html * * Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite * 330, Boston, MA 02111-1307, USA. * * Authors can be contacted at: Daniel Selman: daniel@selman.org * * If you make changes you think others would like, please contact one of the * authors or someone at the www.j3d.org web site. ******************************************************************************/
//***************************************************************************** /**
* Java3dApplet * * Base class for defining a Java 3D applet. Contains some useful methods for * defining views and scenegraphs etc. * * @author Daniel Selman * @version 1.0 */
//***************************************************************************** abstract class Java3dApplet extends Applet {
public static int m_kWidth = 300;
public static int m_kHeight = 300;
protected String[] m_szCommandLineArray = null;
protected VirtualUniverse m_Universe = null;
protected BranchGroup m_SceneBranchGroup = null;
protected Bounds m_ApplicationBounds = null;
// protected com.tornadolabs.j3dtree.Java3dTree m_Java3dTree = null;
public Java3dApplet() {
}
public boolean isApplet() {
try {
System.getProperty("user.dir");
System.out.println("Running as Application.");
return false;
} catch (Exception e) {
}
System.out.println("Running as Applet.");
return true;
}
public URL getWorkingDirectory() throws java.net.MalformedURLException {
URL url = null;
try {
File file = new File(System.getProperty("user.dir"));
System.out.println("Running as Application:");
System.out.println(" " + file.toURL());
return file.toURL();
} catch (Exception e) {
}
System.out.println("Running as Applet:");
System.out.println(" " + getCodeBase());
return getCodeBase();
}
public VirtualUniverse getVirtualUniverse() {
return m_Universe;
}
//public com.tornadolabs.j3dtree.Java3dTree getJ3dTree() {
//return m_Java3dTree;
// }
public Locale getFirstLocale() {
java.util.Enumeration e = m_Universe.getAllLocales();
if (e.hasMoreElements() != false)
return (Locale) e.nextElement();
return null;
}
protected Bounds getApplicationBounds() {
if (m_ApplicationBounds == null)
m_ApplicationBounds = createApplicationBounds();
return m_ApplicationBounds;
}
protected Bounds createApplicationBounds() {
m_ApplicationBounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
return m_ApplicationBounds;
}
protected Background createBackground() {
Background back = new Background(new Color3f(0.9f, 0.9f, 0.9f));
back.setApplicationBounds(createApplicationBounds());
return back;
}
public void initJava3d() {
// m_Java3dTree = new com.tornadolabs.j3dtree.Java3dTree();
m_Universe = createVirtualUniverse();
Locale locale = createLocale(m_Universe);
BranchGroup sceneBranchGroup = createSceneBranchGroup();
ViewPlatform vp = createViewPlatform();
BranchGroup viewBranchGroup = createViewBranchGroup(
getViewTransformGroupArray(), vp);
createView(vp);
Background background = createBackground();
if (background != null)
sceneBranchGroup.addChild(background);
// m_Java3dTree.recursiveApplyCapability(sceneBranchGroup);
// m_Java3dTree.recursiveApplyCapability(viewBranchGroup);
locale.addBranchGraph(sceneBranchGroup);
addViewBranchGroup(locale, viewBranchGroup);
onDoneInit();
}
protected void onDoneInit() {
// m_Java3dTree.updateNodes(m_Universe);
}
protected double getScale() {
return 1.0;
}
public TransformGroup[] getViewTransformGroupArray() {
TransformGroup[] tgArray = new TransformGroup[1];
tgArray[0] = new TransformGroup();
// move the camera BACK a little...
// note that we have to invert the matrix as
// we are moving the viewer
Transform3D t3d = new Transform3D();
t3d.setScale(getScale());
t3d.setTranslation(new Vector3d(0.0, 0.0, -20.0));
t3d.invert();
tgArray[0].setTransform(t3d);
return tgArray;
}
protected void addViewBranchGroup(Locale locale, BranchGroup bg) {
locale.addBranchGraph(bg);
}
protected Locale createLocale(VirtualUniverse u) {
return new Locale(u);
}
protected BranchGroup createSceneBranchGroup() {
m_SceneBranchGroup = new BranchGroup();
return m_SceneBranchGroup;
}
protected View createView(ViewPlatform vp) {
View view = new View();
PhysicalBody pb = createPhysicalBody();
PhysicalEnvironment pe = createPhysicalEnvironment();
AudioDevice audioDevice = createAudioDevice(pe);
if (audioDevice != null) {
pe.setAudioDevice(audioDevice);
audioDevice.initialize();
}
view.setPhysicalEnvironment(pe);
view.setPhysicalBody(pb);
if (vp != null)
view.attachViewPlatform(vp);
view.setBackClipDistance(getBackClipDistance());
view.setFrontClipDistance(getFrontClipDistance());
Canvas3D c3d = createCanvas3D();
view.addCanvas3D(c3d);
addCanvas3D(c3d);
return view;
}
protected PhysicalBody createPhysicalBody() {
return new PhysicalBody();
}
protected AudioDevice createAudioDevice(PhysicalEnvironment pe) {
JavaSoundMixer javaSoundMixer = new JavaSoundMixer(pe);
if (javaSoundMixer == null)
System.out.println("create of audiodevice failed");
return javaSoundMixer;
}
protected PhysicalEnvironment createPhysicalEnvironment() {
return new PhysicalEnvironment();
}
protected float getViewPlatformActivationRadius() {
return 100;
}
protected ViewPlatform createViewPlatform() {
ViewPlatform vp = new ViewPlatform();
vp.setViewAttachPolicy(View.RELATIVE_TO_FIELD_OF_VIEW);
vp.setActivationRadius(getViewPlatformActivationRadius());
return vp;
}
protected Canvas3D createCanvas3D() {
GraphicsConfigTemplate3D gc3D = new GraphicsConfigTemplate3D();
gc3D.setSceneAntialiasing(GraphicsConfigTemplate.PREFERRED);
GraphicsDevice gd[] = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getScreenDevices();
Canvas3D c3d = new Canvas3D(gd[0].getBestConfiguration(gc3D));
c3d.setSize(getCanvas3dWidth(c3d), getCanvas3dHeight(c3d));
return c3d;
}
protected int getCanvas3dWidth(Canvas3D c3d) {
return m_kWidth;
}
protected int getCanvas3dHeight(Canvas3D c3d) {
return m_kHeight;
}
protected double getBackClipDistance() {
return 100.0;
}
protected double getFrontClipDistance() {
return 1.0;
}
protected BranchGroup createViewBranchGroup(TransformGroup[] tgArray,
ViewPlatform vp) {
BranchGroup vpBranchGroup = new BranchGroup();
if (tgArray != null && tgArray.length > 0) {
Group parentGroup = vpBranchGroup;
TransformGroup curTg = null;
for (int n = 0; n < tgArray.length; n++) {
curTg = tgArray[n];
parentGroup.addChild(curTg);
parentGroup = curTg;
}
tgArray[tgArray.length - 1].addChild(vp);
} else
vpBranchGroup.addChild(vp);
return vpBranchGroup;
}
protected void addCanvas3D(Canvas3D c3d) {
setLayout(new BorderLayout());
add(c3d, BorderLayout.CENTER);
doLayout();
}
protected VirtualUniverse createVirtualUniverse() {
return new VirtualUniverse();
}
protected void saveCommandLineArguments(String[] szArgs) {
m_szCommandLineArray = szArgs;
}
protected String[] getCommandLineArguments() {
return m_szCommandLineArray;
}
}
//File: BoxConeSphere.wrl /*
- VRML V2.0 utf8
- Cosmo Worlds V2.0
DEF Box Transform {
children Shape {
appearance Appearance {
material Material {
ambientIntensity 0.25
diffuseColor 0.33 0.34 0.6
specularColor 0.29 0.29 0.29
emissiveColor 0 0 0
shininess 0.79
transparency 0
}
}
geometry Box {
}
}
translation 0 1 0
} DEF Cone Transform {
children Shape {
appearance Appearance {
material Material {
ambientIntensity 0.238636
diffuseColor 0.88 0.15 0.01
specularColor 0.19 0.03 0.03
emissiveColor 0 0 0
shininess 0.08
transparency 0
}
}
geometry Cone {
}
}
translation 0 3 0
} DEF Sphere Transform {
children Shape {
appearance Appearance {
material Material {
ambientIntensity 0.25
diffuseColor 1 0.85 0
specularColor 0.87 0.25 0.25
emissiveColor 0 0 0
shininess 1
transparency 0
}
}
geometry Sphere {
}
}
translation 0 5 0
} DEF Start Viewpoint {
position -6.83953 4.47054 7.64913 orientation -0.237334 -0.967284 -0.0896321 0.744468 fieldOfView 0.785398 description "Start"
}
- /
</source>
Object File Loader
<source lang="java">
/*
* @(#)ConfigObjLoad.java 1.3 02/04/01 15:04:14 * * Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistribution in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * 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. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */
import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.io.FileNotFoundException; import java.net.MalformedURLException; import java.net.URL; import java.util.Map; import javax.media.j3d.Alpha; import javax.media.j3d.AmbientLight; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Sensor; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3f; import com.sun.j3d.loaders.IncorrectFormatException; import com.sun.j3d.loaders.ParsingErrorException; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.objectfile.ObjectFile; import com.sun.j3d.utils.behaviors.sensor.Mouse6DPointerBehavior; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.universe.ConfiguredUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class ConfigObjLoad {
private boolean spin = false;
private boolean noTriangulate = false;
private boolean noStripify = false;
private double creaseAngle = 60.0;
private URL filename = null;
private ConfiguredUniverse u;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create a Transformgroup to scale all objects so they
// appear in the scene.
TransformGroup objScale = new TransformGroup();
Transform3D t3d = new Transform3D();
t3d.setScale(0.7);
objScale.setTransform(t3d);
objRoot.addChild(objScale);
// Create the transform group node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at runtime. Add it to the
// root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objScale.addChild(objTrans);
int flags = ObjectFile.RESIZE;
if (!noTriangulate)
flags |= ObjectFile.TRIANGULATE;
if (!noStripify)
flags |= ObjectFile.STRIPIFY;
ObjectFile f = new ObjectFile(flags,
(float) (creaseAngle * Math.PI / 180.0));
Scene s = null;
try {
s = f.load(filename);
} catch (FileNotFoundException e) {
System.err.println(e);
System.exit(1);
} catch (ParsingErrorException e) {
System.err.println(e);
System.exit(1);
} catch (IncorrectFormatException e) {
System.err.println(e);
System.exit(1);
}
objTrans.addChild(s.getSceneGroup());
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
if (spin) {
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0,
4000, 0, 0, 0, 0, 0);
RotationInterpolator rotator = new RotationInterpolator(
rotationAlpha, objTrans, yAxis, 0.0f,
(float) Math.PI * 2.0f);
rotator.setSchedulingBounds(bounds);
objTrans.addChild(rotator);
}
// Set up the background
Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
Background bgNode = new Background(bgColor);
bgNode.setApplicationBounds(bounds);
objRoot.addChild(bgNode);
// Set up the ambient light
Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
AmbientLight ambientLightNode = new AmbientLight(ambientColor);
ambientLightNode.setInfluencingBounds(bounds);
objRoot.addChild(ambientLightNode);
// Set up the directional lights
Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f);
Color3f light2Color = new Color3f(1.0f, 1.0f, 1.0f);
Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f);
DirectionalLight light1 = new DirectionalLight(light1Color,
light1Direction);
light1.setInfluencingBounds(bounds);
objRoot.addChild(light1);
DirectionalLight light2 = new DirectionalLight(light2Color,
light2Direction);
light2.setInfluencingBounds(bounds);
objRoot.addChild(light2);
return objRoot;
}
private void usage() {
System.out
.println("Usage: java ObjLoad [-s] [-n] [-t] [-c degrees] <.obj file>");
System.out.println(" -s Spin (no user interaction)");
System.out.println(" -n No triangulation");
System.out.println(" -t No stripification");
System.out
.println(" -c Set crease angle for normal generation (default is 60 without");
System.out
.println(" smoothing group info, otherwise 180 within smoothing groups)");
System.exit(0);
} // End of usage
public void init() {
if (filename == null) {
try {
filename = new URL("file:galleon.obj");
} catch (MalformedURLException e) {
System.err.println(e);
System.exit(1);
}
}
// Get the config file URL from the j3d.configURL property or use the
// default config file "j3d1x1-window" in the current directory.
URL configURL = ConfiguredUniverse.getConfigURL("file:j3d1x1-window");
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new ConfiguredUniverse(configURL);
// Get the ViewingPlatform.
ViewingPlatform viewingPlatform = u.getViewingPlatform();
// This will move the ViewPlatform back a bit so the objects in the
// scene can be viewed. This will only have an effect if the config
// file sets the window eyepoint policy to something other than
// RELATIVE_TO_COEXISTENCE, which is the default eyepoint policy
// applied by ConfiguredUniverse.
//
// The default view attach policy for ConfiguredUniverse applications
// is NOMINAL_SCREEN. This sets the view platform origin in the
// physical world to the center of coexistence, which allows eye
// positions expressed relative to coexistence to see the appropriate
// field of view automatically.
viewingPlatform.setNominalViewingTransform();
// Add a ViewPlatformBehavior if not specified in the config file.
if (!spin && viewingPlatform.getViewPlatformBehavior() == null) {
OrbitBehavior orbit = new OrbitBehavior(u.getCanvas(),
OrbitBehavior.REVERSE_ALL);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0,
0.0), 100.0);
orbit.setSchedulingBounds(bounds);
viewingPlatform.setViewPlatformBehavior(orbit);
}
// See if there"s a 6 degree of freedom mouse in the environment.
// We look for one named "mouse6d".
Map sensorMap = null;
sensorMap = u.getNamedSensors();
if (sensorMap != null) {
Sensor mouse6d = (Sensor) sensorMap.get("mouse6d");
if (mouse6d != null) {
Mouse6DPointerBehavior behavior = new Mouse6DPointerBehavior(
mouse6d, 1.0, true);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,
0.0, 0.0), 100.0);
behavior.setSchedulingBounds(bounds);
scene.addChild(behavior);
scene.addChild(behavior.getEcho());
}
}
// Listen for a typed "q", "Q", or "Escape" key on each canvas to
// allow a convenient exit from full screen configurations.
Canvas3D[] canvases;
canvases = u.getViewer().getCanvas3Ds();
class QuitListener extends KeyAdapter {
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (c == "q" || c == "Q" || c == 27)
System.exit(0);
}
}
QuitListener quitListener = new QuitListener();
for (int i = 0; i < canvases.length; i++)
canvases[i].addKeyListener(quitListener);
// Make the scenegraph live.
u.addBranchGraph(scene);
}
public ConfigObjLoad(String[] args) {
if (args.length != 0) {
for (int i = 0; i < args.length; i++) {
if (args[i].startsWith("-")) {
if (args[i].equals("-s")) {
spin = true;
} else if (args[i].equals("-n")) {
noTriangulate = true;
} else if (args[i].equals("-t")) {
noStripify = true;
} else if (args[i].equals("-c")) {
if (i < args.length - 1) {
creaseAngle = (new Double(args[++i])).doubleValue();
} else
usage();
} else {
usage();
}
} else {
try {
if ((args[i].indexOf("file:") == 0)
|| (args[i].indexOf("http") == 0)) {
filename = new URL(args[i]);
} else if (args[i].charAt(0) != "/") {
filename = new URL("file:./" + args[i]);
} else {
filename = new URL("file:" + args[i]);
}
} catch (MalformedURLException e) {
System.err.println(e);
System.exit(1);
}
}
}
}
init();
}
public static void main(String[] args) {
new ConfigObjLoad(args);
}
}
</source>
Object Loader 3
<source lang="java">
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Frame; import java.awt.GraphicsConfiguration; import java.io.FileNotFoundException; import java.net.MalformedURLException; import java.net.URL; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3f; import com.sun.j3d.loaders.IncorrectFormatException; import com.sun.j3d.loaders.ParsingErrorException; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.objectfile.ObjectFile; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.universe.SimpleUniverse; /**
* !Diese Klasse wurde fur das Laden uber ein JAR-Archiv oder Applet welches ein * JAR - Archiv nutzt angepasst Um das Programm als einfache Applikation uber * einen class-File laufen zu lassen bitte auf den Code zum Einladen der OBJ * Datei im Tutorial zuruckgreifen! */
public class ObjectLoader extends Applet {
/**
* init Methoden fur die Darstellung als Applet
*/
public void init() {
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
canvas3D = new Canvas3D(config);
add("Center", canvas3D);
BranchGroup szene = macheSzene();
szene.rupile();
universe = new SimpleUniverse(canvas3D);
universe.getViewingPlatform().setNominalViewingTransform();
universe.addBranchGraph(szene);
}
/**
* Erstellt den Szenegraphen
*
* @return BranchGroup
*/
public BranchGroup macheSzene() {
BranchGroup objWurzel = new BranchGroup();
// Transformation, 2 Rotationen:
Transform3D drehung = new Transform3D();
Transform3D drehung2 = new Transform3D();
drehung.rotX(Math.PI / 4.0d);
drehung2.rotY(Math.PI / 5.0d);
drehung.mul(drehung2);
TransformGroup objDreh = new TransformGroup(drehung);
//Loader
ObjectFile file = new ObjectFile(ObjectFile.RESIZE);
Scene scene = null;
try {
scene = file.load(ClassLoader.getSystemResource("teapot.obj"));
} catch (Exception e) {
}
objDreh.addChild(scene.getSceneGroup());
DirectionalLight d_Licht = new DirectionalLight(new Color3f(1.0f, 0.5f,
0.3f), new Vector3f(-1.0f, -1.0f, -1.0f));
d_Licht.setInfluencingBounds(new BoundingSphere(new Point3d(0.0d, 0.0d,
0.0d), 100.0d));
// d_Licht.setColor(new Color3f(1.0f,0.5f,0.3f));
objDreh.addChild(d_Licht);
objWurzel.addChild(objDreh);
return objWurzel;
}
/**
* gibt speicher frei
*/
public void destroy() {
universe.removeAllLocales();
}
public static void main(String[] args) {
frame = new MainFrame(new ObjectLoader(), 500, 500);
frame.setTitle("ObjectLoader");
}
//---- Attribute -----------------------
private SimpleUniverse universe;
private Canvas3D canvas3D;
private static Frame frame;
}
</source>
Object Loader Example
<source lang="java">
/*
* @(#)ObjLoad.java 1.22 02/10/21 13:46:12 * * Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistribution in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * 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. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.GraphicsConfiguration; import java.io.FileNotFoundException; import java.net.MalformedURLException; import java.net.URL; import javax.media.j3d.Alpha; import javax.media.j3d.AmbientLight; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3f; import com.sun.j3d.loaders.IncorrectFormatException; import com.sun.j3d.loaders.ParsingErrorException; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.objectfile.ObjectFile; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.universe.PlatformGeometry; import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class ObjLoad extends Applet {
private boolean spin = false;
private boolean noTriangulate = false;
private boolean noStripify = false;
private double creaseAngle = 60.0;
private URL filename = null;
private SimpleUniverse u;
private BoundingSphere bounds;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create a Transformgroup to scale all objects so they
// appear in the scene.
TransformGroup objScale = new TransformGroup();
Transform3D t3d = new Transform3D();
t3d.setScale(0.7);
objScale.setTransform(t3d);
objRoot.addChild(objScale);
// Create the transform group node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at runtime. Add it to the
// root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objScale.addChild(objTrans);
int flags = ObjectFile.RESIZE;
if (!noTriangulate)
flags |= ObjectFile.TRIANGULATE;
if (!noStripify)
flags |= ObjectFile.STRIPIFY;
ObjectFile f = new ObjectFile(flags,
(float) (creaseAngle * Math.PI / 180.0));
Scene s = null;
try {
s = f.load(filename);
} catch (FileNotFoundException e) {
System.err.println(e);
System.exit(1);
} catch (ParsingErrorException e) {
System.err.println(e);
System.exit(1);
} catch (IncorrectFormatException e) {
System.err.println(e);
System.exit(1);
}
objTrans.addChild(s.getSceneGroup());
bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
if (spin) {
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0,
4000, 0, 0, 0, 0, 0);
RotationInterpolator rotator = new RotationInterpolator(
rotationAlpha, objTrans, yAxis, 0.0f,
(float) Math.PI * 2.0f);
rotator.setSchedulingBounds(bounds);
objTrans.addChild(rotator);
}
// Set up the background
Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
Background bgNode = new Background(bgColor);
bgNode.setApplicationBounds(bounds);
objRoot.addChild(bgNode);
return objRoot;
}
private void usage() {
System.out
.println("Usage: java ObjLoad [-s] [-n] [-t] [-c degrees] <.obj file>");
System.out.println(" -s Spin (no user interaction)");
System.out.println(" -n No triangulation");
System.out.println(" -t No stripification");
System.out
.println(" -c Set crease angle for normal generation (default is 60 without");
System.out
.println(" smoothing group info, otherwise 180 within smoothing groups)");
System.exit(0);
} // End of usage
public void init() {
if (filename == null) {
// Applet
try {
URL path = getCodeBase();
filename = new URL(path.toString() + "./galleon.obj");
} catch (MalformedURLException e) {
System.err.println(e);
System.exit(1);
}
}
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(c);
// add mouse behaviors to the ViewingPlatform
ViewingPlatform viewingPlatform = u.getViewingPlatform();
PlatformGeometry pg = new PlatformGeometry();
// Set up the ambient light
Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
AmbientLight ambientLightNode = new AmbientLight(ambientColor);
ambientLightNode.setInfluencingBounds(bounds);
pg.addChild(ambientLightNode);
// Set up the directional lights
Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f);
Color3f light2Color = new Color3f(1.0f, 1.0f, 1.0f);
Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f);
DirectionalLight light1 = new DirectionalLight(light1Color,
light1Direction);
light1.setInfluencingBounds(bounds);
pg.addChild(light1);
DirectionalLight light2 = new DirectionalLight(light2Color,
light2Direction);
light2.setInfluencingBounds(bounds);
pg.addChild(light2);
viewingPlatform.setPlatformGeometry(pg);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
viewingPlatform.setNominalViewingTransform();
if (!spin) {
OrbitBehavior orbit = new OrbitBehavior(c,
OrbitBehavior.REVERSE_ALL);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0,
0.0), 100.0);
orbit.setSchedulingBounds(bounds);
viewingPlatform.setViewPlatformBehavior(orbit);
}
u.addBranchGraph(scene);
}
// Caled if running as a program
public ObjLoad(String[] args) {
if (args.length != 0) {
for (int i = 0; i < args.length; i++) {
if (args[i].startsWith("-")) {
if (args[i].equals("-s")) {
spin = true;
} else if (args[i].equals("-n")) {
noTriangulate = true;
} else if (args[i].equals("-t")) {
noStripify = true;
} else if (args[i].equals("-c")) {
if (i < args.length - 1) {
creaseAngle = (new Double(args[++i])).doubleValue();
} else
usage();
} else {
usage();
}
} else {
try {
if ((args[i].indexOf("file:") == 0)
|| (args[i].indexOf("http") == 0)) {
filename = new URL(args[i]);
} else if (args[i].charAt(0) != "/") {
filename = new URL("file:./" + args[i]);
} else {
filename = new URL("file:" + args[i]);
}
} catch (MalformedURLException e) {
System.err.println(e);
System.exit(1);
}
}
}
}
}
// Running as an applet
public ObjLoad() {
}
public void destroy() {
u.cleanup();
}
//
// The following allows ObjLoad to be run as an application
// as well as an applet
//
public static void main(String[] args) {
new MainFrame(new ObjLoad(args), 700, 700);
}
}
</source>
