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import?java.applet.Applet;

import?java.awt.BorderLayout;

import?java.awt.Frame;

import?javax.media.j3d.BoundingSphere;

import?javax.media.j3d.BranchGroup;

import?javax.media.j3d.Canvas3D;

import?javax.media.j3d.Geometry;

import?javax.media.j3d.GeometryArray;

import?javax.media.j3d.IndexedLineArray;

import?javax.media.j3d.Shape3D;

import?javax.media.j3d.TransformGroup;

import?javax.vecmath.Point3f;

import?com.sun.j3d.utils.applet.MainFrame;

import?com.sun.j3d.utils.behaviors.mouse.MouseRotate;

import?com.sun.j3d.utils.geometry.ColorCube;

import?com.sun.j3d.utils.universe.SimpleUniverse;

//?MouseRotateApp?renders?a?single,?interactively?rotatable?cube.

public?class?MouseRotateApp?extends?Applet?{

public?BranchGroup?createSceneGraph()?{

//?Create?the?root?of?the?branch?graph

BranchGroup?objRoot?=?new?BranchGroup();

TransformGroup?objRotate?=?new?TransformGroup();

objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

objRoot.addChild(objRotate);

objRotate.addChild(new?ColorCube(0.4));

objRoot.addChild(new?Axis());

MouseRotate?myMouseRotate?=?new?MouseRotate();

myMouseRotate.setTransformGroup(objRotate);

myMouseRotate.setSchedulingBounds(new?BoundingSphere());

objRoot.addChild(myMouseRotate);

//?Let?Java?3D?perform?optimizations?on?this?scene?graph.

objRoot.compile();

return?objRoot;

}?//?end?of?CreateSceneGraph?method?of?MouseRotateApp

//?Create?a?simple?scene?and?attach?it?to?the?virtual?universe

public?MouseRotateApp()?{

setLayout(new?BorderLayout());

Canvas3D?canvas3D?=?new?Canvas3D(null);

add("Center",?canvas3D);

BranchGroup?scene?=?createSceneGraph();

//?SimpleUniverse?is?a?Convenience?Utility?class

SimpleUniverse?simpleU?=?new?SimpleUniverse(canvas3D);

//?This?will?move?the?ViewPlatform?back?a?bit?so?the

//?objects?in?the?scene?can?be?viewed.

simpleU.getViewingPlatform().setNominalViewingTransform();

simpleU.addBranchGraph(scene);

}?//?end?of?MouseRotateApp?(constructor)

//?The?following?allows?this?to?be?run?as?an?application

//?as?well?as?an?applet

public?static?void?main(String[]?args)?{

System.out

.print("MouseRotateApp.java?\n-?a?demonstration?of?using?the?MouseRotate?");

System.out

.println("utility?behavior?class?to?provide?interaction?in?a?Java?3D?scene.");

System.out

.println("Hold?the?mouse?button?while?moving?the?mouse?to?make?the?cube?rotate.");

System.out

.println("This?is?a?simple?example?progam?from?The?Java?3D?API?Tutorial.");

System.out.println("The?Java?3D?Tutorial?is?available?on?the?web?at:");

Frame?frame?=?new?MainFrame(new?MouseRotateApp(),?256,?256);

}?//?end?of?main?(method?of?MouseRotateApp)

}?//?end?of?class?MouseRotateApp

/*

*?Getting?Started?with?the?Java?3D?API?written?in?Java?3D

*

*?This?program?demonstrates:?1.?writing?a?visual?object?class?In?this?program,

*?Axis?class?defines?a?visual?object?This?particular?class?extends?Shape3D?See

*?the?text?for?a?discussion.?2.?Using?LineArray?to?draw?3D?lines.

*/

class?Axis?extends?Shape3D?{

//

//?create?axis?visual?object

//

public?Axis()?{

this.setGeometry(createGeometry());

}

private?Geometry?createGeometry()?{

//?create?line?for?X?axis

IndexedLineArray?axisLines?=?new?IndexedLineArray(18,

GeometryArray.COORDINATES,?30);

axisLines.setCoordinate(0,?new?Point3f(-1.0f,?0.0f,?0.0f));

axisLines.setCoordinate(1,?new?Point3f(1.0f,?0.0f,?0.0f));

axisLines.setCoordinate(2,?new?Point3f(0.9f,?0.1f,?0.1f));

axisLines.setCoordinate(3,?new?Point3f(0.9f,?-0.1f,?0.1f));

axisLines.setCoordinate(4,?new?Point3f(0.9f,?0.1f,?-0.1f));

axisLines.setCoordinate(5,?new?Point3f(0.9f,?-0.1f,?-0.1f));

axisLines.setCoordinate(6,?new?Point3f(0.0f,?-1.0f,?0.0f));

axisLines.setCoordinate(7,?new?Point3f(0.0f,?1.0f,?0.0f));

axisLines.setCoordinate(8,?new?Point3f(0.1f,?0.9f,?0.1f));

axisLines.setCoordinate(9,?new?Point3f(-0.1f,?0.9f,?0.1f));

axisLines.setCoordinate(10,?new?Point3f(0.1f,?0.9f,?-0.1f));

axisLines.setCoordinate(11,?new?Point3f(-0.1f,?0.9f,?-0.1f));

axisLines.setCoordinate(12,?new?Point3f(0.0f,?0.0f,?-1.0f));

axisLines.setCoordinate(13,?new?Point3f(0.0f,?0.0f,?1.0f));

axisLines.setCoordinate(14,?new?Point3f(0.1f,?0.1f,?0.9f));

axisLines.setCoordinate(15,?new?Point3f(-0.1f,?0.1f,?0.9f));

axisLines.setCoordinate(16,?new?Point3f(0.1f,?-0.1f,?0.9f));

axisLines.setCoordinate(17,?new?Point3f(-0.1f,?-0.1f,?0.9f));

axisLines.setCoordinateIndex(0,?0);

axisLines.setCoordinateIndex(1,?1);

axisLines.setCoordinateIndex(2,?2);

axisLines.setCoordinateIndex(3,?1);

axisLines.setCoordinateIndex(4,?3);

axisLines.setCoordinateIndex(5,?1);

axisLines.setCoordinateIndex(6,?4);

axisLines.setCoordinateIndex(7,?1);

axisLines.setCoordinateIndex(8,?5);

axisLines.setCoordinateIndex(9,?1);

axisLines.setCoordinateIndex(10,?6);

axisLines.setCoordinateIndex(11,?7);

axisLines.setCoordinateIndex(12,?8);

axisLines.setCoordinateIndex(13,?7);

axisLines.setCoordinateIndex(14,?9);

axisLines.setCoordinateIndex(15,?7);

axisLines.setCoordinateIndex(16,?10);

axisLines.setCoordinateIndex(17,?7);

axisLines.setCoordinateIndex(18,?11);

axisLines.setCoordinateIndex(19,?7);

axisLines.setCoordinateIndex(20,?12);

axisLines.setCoordinateIndex(21,?13);

axisLines.setCoordinateIndex(22,?14);

axisLines.setCoordinateIndex(23,?13);

axisLines.setCoordinateIndex(24,?15);

axisLines.setCoordinateIndex(25,?13);

axisLines.setCoordinateIndex(26,?16);

axisLines.setCoordinateIndex(27,?13);

axisLines.setCoordinateIndex(28,?17);

axisLines.setCoordinateIndex(29,?13);

return?axisLines;

}?//?end?of?Axis?createGeometry()

}?//?end?of?class?Axis

代碼沒(méi)有問(wèn)題，e68a843231313335323631343130323136353331333238653835可能是安裝配置問(wèn)題。

這里有教程，你研究一下吧，很多實(shí)例。

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