【Java3D】Java3D的Demo

题记
在2020年，笔者最好的朋友浩哥找工作的时候，北京的一家公司让他做一个正方体内接一个球然后再球里面套入一个内接四面体，然后鼠标移动，这个整体就会移动。动态图丢失了，非常抱歉没有场景给了24h，让他完成，如果做出来了，就录用他。当时，我和这位朋友研究了一下，然后开始找资料–找到一本书好像叫什么Java3d游戏编程，然后网上有一篇Blog在eclipse搭建环境来做3d效果。最终我们没把里面的四面体做出来，结果我这个兄弟就错过这次工作机会，目前去了北京考研教育机构担任team leader。
不忍心当初写的一些demo丢失，还是水一篇Blog记录一下，那时候我们一下写的垃圾代码。

demo1

一个没做到位的实例


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.MouseWheelZoom;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.geometry.GeometryInfo;
import com.sun.j3d.utils.geometry.NormalGenerator;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.universe.SimpleUniverse;
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GraphicsConfiguration;
import javax.media.j3d.Alpha;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
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.GeometryArray;
import javax.media.j3d.LineArray;
import javax.media.j3d.LineAttributes;
import javax.media.j3d.Material;
import javax.media.j3d.PolygonAttributes;
import javax.media.j3d.PositionInterpolator;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Texture;
import javax.media.j3d.Texture2D;
import javax.media.j3d.TextureAttributes;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.TransparencyAttributes;
import javax.media.j3d.TriangleArray;
import javax.vecmath.Color3f;
import javax.vecmath.Color4f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;/**** @author Administrator*/
public class MyJava3D extends Applet {public MyJava3D() {this.setLayout(new BorderLayout());GraphicsConfiguration configuration = SimpleUniverse.getPreferredConfiguration();Canvas3D canvas3D = new Canvas3D(configuration);this.add(canvas3D);SimpleUniverse universe = new SimpleUniverse(canvas3D);universe.addBranchGraph(getBranchGroup());Vector3f viewTranslation = new Vector3f();viewTranslation.z = 3;viewTranslation.x = 0f;viewTranslation.y = .3f;Transform3D viewTransform = new Transform3D();viewTransform.setTranslation(viewTranslation);Transform3D rotation = new Transform3D();rotation.rotX(-Math.PI / 12.0d);rotation.mul(viewTransform);universe.getViewingPlatform().getViewPlatformTransform().setTransform(rotation);universe.getViewingPlatform().getViewPlatformTransform().getTransform(viewTransform);}private GeometryArray getGeo(float radius) {/*** 需要改变这个点的坐标 传入参数是外接圆的半径*/Point3f e = new Point3f((float) (radius / Math.cos(60.0)), -radius, 1.0f); // eastPoint3f w = new Point3f((float) (-radius / Math.cos(60.0)), 0.0f, 1.0f); // west// Point3f s = new Point3f(0.0f, 0.0f, 1.0f); // southPoint3f n = new Point3f(0.0f, 0.0f, -1.0f); // northPoint3f t = new Point3f(0.0f, 0.0f, 0.0f); // topTriangleArray pyramidGeometry = new TriangleArray(12, TriangleArray.COORDINATES);// 18个创建金字塔索引点pyramidGeometry.setCoordinate(0, e);pyramidGeometry.setCoordinate(1, t);pyramidGeometry.setCoordinate(2, n);pyramidGeometry.setCoordinate(3, n);pyramidGeometry.setCoordinate(4, t);pyramidGeometry.setCoordinate(5, w);pyramidGeometry.setCoordinate(6, w);pyramidGeometry.setCoordinate(7, t);pyramidGeometry.setCoordinate(8, e);pyramidGeometry.setCoordinate(9, n);pyramidGeometry.setCoordinate(10, w);pyramidGeometry.setCoordinate(11, e);GeometryInfo geometryInfo = new GeometryInfo(pyramidGeometry);NormalGenerator ng = new NormalGenerator();ng.generateNormals(geometryInfo);GeometryArray result = geometryInfo.getGeometryArray();return result;}BranchGroup getBranchGroup() {BranchGroup branchGroup = new BranchGroup();BoundingSphere bounds = new BoundingSphere(new Point3d(0, 2.0, 7.0), 1000.0);// set coordinates 设置坐标Transform3D transform3D = new Transform3D();transform3D.setTranslation(new Vector3d(0, 0, -7));TransformGroup transformGroup = new TransformGroup();transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);transformGroup.setTransform(transform3D);// set back color 设置背景色Color3f backgroudColor3f = new Color3f(Color.GRAY);Background background = new Background(backgroudColor3f);background.setApplicationBounds(bounds);branchGroup.addChild(background);// set mouse's behavior 设置鼠标行为MouseRotate mouseRotate = new MouseRotate();mouseRotate.setTransformGroup(transformGroup);mouseRotate.setSchedulingBounds(bounds);transformGroup.addChild(mouseRotate);MouseWheelZoom mouseZoom = new MouseWheelZoom();mouseZoom.setTransformGroup(transformGroup);mouseZoom.setSchedulingBounds(bounds);transformGroup.addChild(mouseZoom);MouseTranslate mouseTranslate = new MouseTranslate();mouseTranslate.setTransformGroup(transformGroup);mouseTranslate.setSchedulingBounds(bounds);transformGroup.addChild(mouseTranslate);// around in the dark 在和黑暗中Color3f lightColor = new Color3f(Color.green);AmbientLight ambientLight = new AmbientLight(lightColor);ambientLight.setInfluencingBounds(bounds);branchGroup.addChild(ambientLight);DirectionalLight directionalLight = new DirectionalLight();directionalLight.setColor(lightColor);directionalLight.setInfluencingBounds(bounds);branchGroup.addChild(directionalLight);// add box 立方体Color3f black = new Color3f(0.0f, 0.0f, 0.0f);Color3f white = new Color3f(1.0f, 1.0f, 1.0f);Color3f red = new Color3f(0.7f, .15f, .15f);Appearance ap = new Appearance();TransparencyAttributes t_attr = new TransparencyAttributes(TransparencyAttributes.BLENDED, 0.7f,TransparencyAttributes.BLEND_SRC_ALPHA, TransparencyAttributes.BLEND_ONE);ap.setTransparencyAttributes(t_attr);ap.setMaterial(new Material(red, black, red, black, 1.0f));TransformGroup boxGroup = new TransformGroup();boxGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);Transform3D boxTransform3D = new Transform3D();boxTransform3D.setTranslation(new Vector3d(0, 0, 0));boxGroup.setTransform(boxTransform3D);Box box = new Box(0.5f, 0.5f, 0.5f, ap); // 长宽高boxGroup.addChild(box);transformGroup.addChild(boxGroup);// ------------------------------------------------------// add sphere 添加球体TransformGroup sphereGroup = new TransformGroup();Transform3D sphereTransform3D = new Transform3D();sphereTransform3D.setTranslation(new Vector3d(0, 0, 0));sphereGroup.setTransform(sphereTransform3D);Sphere sphere = new Sphere(0.5f, -1, 80, ap);sphereGroup.addChild(sphere);transformGroup.addChild(sphereGroup);// add cone 添加锥体TransformGroup coneGroup = new TransformGroup();Transform3D coneTransform3D = new Transform3D();coneTransform3D.setTranslation(new Vector3d(0, 0.25, 0));coneGroup.setTransform(coneTransform3D);Cone cone = new Cone(0.5f, 0.5f, ap);// 半径和高都为0.5f的圆锥coneGroup.addChild(cone);transformGroup.addChild(coneGroup);// 添加正四面体/** //add coordinates 添加坐标 float[] linevertX = { -5.0f, 0f, 0f, 5.0f, 0f, 0f,};* float[] linevertY = { 0 , -5.0f, 0f, 0, 5.0f, 0f,}; float[] linevertZ = { 0 ,* 0, -5.0f, 0, 0,5.0f,}; float[] linecolorsX = { 5.0f, 0f, 0f, 5.0f, 0.0f,* 0f,}; float[] linecolorsY = { 0f, 5.0f, 0f, 0f, 5.0f, 0f,}; float[]* linecolorsZ = { 0f, 0f, 5.0f, 0f, 0.0f, 5.0f,}; LineArray lineX = new* LineArray(2, LineArray.COORDINATES | LineArray.COLOR_3);* lineX.setCoordinates(0, linevertX); lineX.setColors(0, linecolorsX);* LineArray lineY = new LineArray(2, LineArray.COORDINATES |* LineArray.COLOR_3); lineY.setCoordinates(0, linevertY); lineY.setColors(0,* linecolorsY); LineArray lineZ = new LineArray(2, LineArray.COORDINATES |* LineArray.COLOR_3); lineZ.setCoordinates(0, linevertZ); lineZ.setColors(0,* linecolorsZ); LineAttributes lineAttributes = new LineAttributes();* lineAttributes.setLineWidth(3.0f);* * Appearance lineappearance = new Appearance();* lineappearance.setLineAttributes(lineAttributes);*/Shape3D shape = getShape();transformGroup.addChild(shape);branchGroup.addChild(transformGroup);// lights//  BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 1000.0);Color3f light1Color = new Color3f(.7f, .7f, .7f);Vector3f light1Direction = new Vector3f(4.0f, -7.0f, -12.0f);DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction);light1.setInfluencingBounds(bounds);branchGroup.addChild(light1);Color3f ambientColor = new Color3f(.4f, .4f, .4f);AmbientLight ambientLightNode = new AmbientLight(ambientColor);ambientLightNode.setInfluencingBounds(bounds);branchGroup.addChild(ambientLightNode);return branchGroup;}private Shape3D getShape() {// yellow appearanceAppearance appearance = new Appearance();Color3f color = new Color3f(Color.red);Color3f black = new Color3f(0.0f, 0.0f, 0.0f);Color3f white = new Color3f(1.0f, 1.0f, 1.0f);Texture texture = new Texture2D();TextureAttributes texAttr = new TextureAttributes();texAttr.setTextureMode(TextureAttributes.MODULATE);texture.setBoundaryModeS(Texture.WRAP);texture.setBoundaryModeT(Texture.WRAP);texture.setBoundaryColor(new Color4f(0.0f, 1.0f, 0.0f, 0.0f));Material mat = new Material(color, black, color, white, 70f);appearance.setTextureAttributes(texAttr);appearance.setMaterial(mat);appearance.setTexture(texture);GeometryArray result = getGeo();Shape3D shape = new Shape3D(result, appearance);return shape;}private GeometryArray getGeo() {Point3f e = new Point3f(1.0f, 0.0f, 1.0f); // eastPoint3f w = new Point3f(-1.0f, 0.0f, 1.0f); // west// Point3f s = new Point3f(0.0f, 0.0f, 1.0f); // southPoint3f n = new Point3f(0.0f, 0.0f, -1.0f); // northPoint3f t = new Point3f(0.0f, 0.721f, 0.0f); // topTriangleArray pyramidGeometry = new TriangleArray(12, TriangleArray.COORDINATES);// 18个创建金字塔索引点pyramidGeometry.setCoordinate(0, e);pyramidGeometry.setCoordinate(1, t);pyramidGeometry.setCoordinate(2, n);pyramidGeometry.setCoordinate(3, n);pyramidGeometry.setCoordinate(4, t);pyramidGeometry.setCoordinate(5, w);pyramidGeometry.setCoordinate(6, w);pyramidGeometry.setCoordinate(7, t);pyramidGeometry.setCoordinate(8, e);pyramidGeometry.setCoordinate(9, n);pyramidGeometry.setCoordinate(10, w);pyramidGeometry.setCoordinate(11, e);GeometryInfo geometryInfo = new GeometryInfo(pyramidGeometry);NormalGenerator ng = new NormalGenerator();ng.generateNormals(geometryInfo);GeometryArray result = geometryInfo.getGeometryArray();return result;}public static void main(String[] argsSes) {new MainFrame(new MyJava3D(), 256, 256);}
}

demo2

这个好像是一个网站的具体事例，应该是oracle的一个java3d网站，大家一搜就可以找到。

import javax.swing.*;
import java.awt.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.geometry.Sphere;import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.GraphicsConfiguration;/*** Simple Java 3D example program to display a spinning cube.*/
public class HelloUniverse extends JFrame {private SimpleUniverse univ = null;private BranchGroup scene = null;public BranchGroup createSceneGraph() {// Create the root of the branch graphBranchGroup objRoot = new BranchGroup();// Create the TransformGroup node and initialize it to the// identity. Enable the TRANSFORM_WRITE capability so that// our behavior code can modify it at run time. Add it to// the root of the subgraph.TransformGroup objTrans = new TransformGroup();objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);objRoot.addChild(objTrans);// Create a simple Shape3D node; add it to the scene graph.objTrans.addChild(new ColorCube(0.4));//objTrans.addChild(new Sphere(.5f));// Create a new Behavior object that will perform the// desired operation on the specified transform and add// it into the scene graph.Transform3D yAxis = new Transform3D();Alpha rotationAlpha = new Alpha(-1, 4000);RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f,(float) Math.PI * 2.0f);BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);rotator.setSchedulingBounds(bounds);objRoot.addChild(rotator);// Have Java 3D perform optimizations on this scene graph.objRoot.compile();return objRoot;}private Canvas3D createUniverse() {// Get the preferred graphics configuration for the default screenGraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();// Create a Canvas3D using the preferred configurationCanvas3D c = new Canvas3D(config);// Create simple universe with view branchuniv = new SimpleUniverse(c);// This will move the ViewPlatform back a bit so the// objects in the scene can be viewed.univ.getViewingPlatform().setNominalViewingTransform();// Ensure at least 5 msec per frame (i.e., < 200Hz)univ.getViewer().getView().setMinimumFrameCycleTime(5);return c;}/*** Creates new form HelloUniverse*/public HelloUniverse() {// Initialize the GUI componentsinitComponents();// Create Canvas3D and SimpleUniverse; add canvas to drawing panelCanvas3D c = createUniverse();drawingPanel.add(c, BorderLayout.CENTER);// Create the content branch and add it to the universescene = createSceneGraph();univ.addBranchGraph(scene);}// ----------------------------------------------------------------/*** This method is called from within the constructor to initialize the form.* WARNING: Do NOT modify this code. The content of this method is always* regenerated by the Form Editor.*/// <editor-fold defaultstate="collapsed" desc=" Generated Code// ">//GEN-BEGIN:initComponentsprivate void initComponents() {drawingPanel = new JPanel();setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);setTitle("HelloUniverse");drawingPanel.setLayout(new java.awt.BorderLayout());drawingPanel.setPreferredSize(new java.awt.Dimension(250, 250));getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);pack();}// </editor-fold>//GEN-END:initComponents/*** @param args*            the command line arguments*/public static void main(String args[]) {EventQueue.invokeLater(new Runnable() {public void run() {new HelloUniverse().setVisible(true);}});}// Variables declaration - do not modify//GEN-BEGIN:variablesprivate javax.swing.JPanel drawingPanel;// End of variables declaration//GEN-END:variables}

另外参考文献可以看这个https://blog.csdn.net/gaoyunpeng/article/details/1771423
https://www.oracle.com/java/technologies/javase/java-3d.html
最后，您所需要的一些jar包和一些demo可以参考：https://download.csdn.net/download/Alearn_/14945316