高分求大牛来解决这个关于java3d在网页中显示的问题。
同学的毕业设计。向一个黑心的家伙买的。。付了钱就不理人了。。向我请教。。我捣鼓了两天还是搞不定。。现在出高分向论坛中大牛们请教啊。。
题目是在网页中显示3d模型。。有两个模型。。第一个是UglyCube.java。是一个方块。
它可以在applet中运行。也可以放在浏览器中运行。它的代码和运行效果图片如下。
import java.applet.Applet;
import java.awt.BorderLayout;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
public class UglyCube extends Applet
{
private SimpleUniverse universe ;
public UglyCube()
{}
public void init()
{
//canvas to draw on, ask SimpleUniverse what config to use
Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
setLayout(new BorderLayout());
add("Center", canvas);
//create top of our scene graph
BranchGroup scene = new BranchGroup();
//create universe, and attach our geometry to it.
SimpleUniverse u = new SimpleUniverse(canvas);
u.getViewingPlatform().setNominalViewingTransform();
// Create the bounding leaf node
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
// Create the transform node
TransformGroup transformGroup = new TransformGroup();
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
// Create the drag behavior node
MouseRotate behavior = new MouseRotate();
behavior.setTransformGroup(transformGroup);
transformGroup.addChild(behavior);
behavior.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseZoom behavior2 = new MouseZoom();
behavior2.setTransformGroup(transformGroup);
transformGroup.addChild(behavior2);
behavior2.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseTranslate behavior3 = new MouseTranslate();
behavior3.setTransformGroup(transformGroup);
transformGroup.addChild(behavior3);
behavior3.setSchedulingBounds(bounds);
transformGroup.addChild(new ColorCube(0.4));
scene.addChild(transformGroup);
u.addBranchGraph(scene);
}
// The following allows UglyCube to be run as an application
// as well as an applet
public static void main(String[] args)
{
new MainFrame(new UglyCube(), 256, 256);
}
}
放在applet中正确运行
插入在网页中正确运行
另外一个是船的模型ConfigObjLoader.java。只可以在applet中运行。在浏览器中运行则报错。其源代码和在applet正确运行和浏览器重报错的图片如下。
放在applet中正确运行
放在网页中报错
其报错信息如下
java.lang.reflect.InvocationTargetException
at com.sun.deploy.util.DeployAWTUtil.invokeAndWait(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.runOnEDT(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: java.lang.InstantiationException: ConfigObjLoader
at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.InstantiationException: ConfigObjLoader
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
... 15 more
异常：java.lang.reflect.InvocationTargetException
--------------------编程问答-------------------- ConfigObjLoader文件太长了。我分两段发上来。
网上查了下java.lang.InstantiationException错误说是没有默认的构造函数。。我对比了下UglyCube.java和ConfigObjLoad.java文件发现可以运行的UglyCube.java文件有默认的构造函数。。其调用格式如下
public static void main(String[] args)
{
new MainFrame(new UglyCube(), 256, 256);
}
ConfigObjLoader.java中无默认的构造函数。在main函数中调用方法如下。。
public static void main(String[] args) {
new ConfigObjLoader(args);
}
我又给ConfigObjLoader.java中加了个默认的构造函数。运行后还是报同样的错误。
调用applet的网页中的代码如下
<applet code="ConfigObjLoader.class" archive="keke.jar" width=600 height=500 hspace=0 align=center></applet></p>
哎。。求好心的大牛帮助。。
--------------------编程问答--------------------
ConfigObjLoader.java段一
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 ConfigObjLoader {
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:./files/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();
--------------------编程问答-------------------- 瀏覽器中的啟動方式可能和applet中不一樣
ConfigObjLoader.java段二
// 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 ConfigObjLoader()
{}
public ConfigObjLoader(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 ConfigObjLoader(args);
}
}
你可以試試增加一個ConfigObjLoader()無參方法，
而方法體和ConfigObjLoader(String[] args)一樣 --------------------编程问答-------------------- 真黑心啊，这就是Java3D的Sample啊 --------------------编程问答-------------------- 这玩意能做毕业设计？标题挺大，但是你都是用别人的东西。自己的东西有什么啊。也就算是设计了一个盒子和一条船的模型。听楼上说还是人家的Sample。还有时间，赶紧换题目吧。
补充：Java , Java相关
