JAVA 3D 开发

 

import java.applet.Applet;

import java.awt.BorderLayout;

import java.awt.Frame;

import java.awt.GraphicsConfiguration;

 

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;

//import javax.media.jai.ColorCube;

 

// 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());

GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();

 

Canvas3D canvas3D=new Canvas3D(config);

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:");

System.out.println("http://www.sun.com/desktop/java3d/collateral");

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

 

 

附件中有效果和jar包

 

j3d-1_5_2-windows-i586.zip的使用：

 

解压--》里边有j3d-jre.zip，继续解压j3d-jre.zip。--》里边有bin 和 lib 文件夹， 其中lib文件夹中是我们需要的jar包，要完整的添加到CLASSPATH中，bin文件夹下的dll 文件 要放在 jdk/jre/lib/ext（机器中的JAVA安装目录） 中。

 

评论

2 楼 libochongjing 2013-04-24  

学习java 3d刚刚起步，遇到些问题。请教博主，java 3d 如何画圆台？谢谢

1 楼 brospy 2013-03-26  

  博主威武！