3ds是3dsmax建模软件的衍生文件格式,做完max场景文件后可导出生3ds格式,可与其它建模软件兼容,也可用于渲染.

 

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Java3D 创建三维几何模型:[  ]

Java3D 加载外部Obj模型:[  ]

 

3ds模型加载时用到第三方jar包 Java3dloader包

Java3dloader包下载地址:   

 

实例一: 加载3ds文件到场景

效果图如下:

读取3ds模型加载到场景

package com.java3d.dennist.loader;import javax.media.j3d.BranchGroup;import com.microcrowd.loader.java3d.max3ds.Loader3DS;import com.sun.j3d.loaders.Scene;/** * * *  @version ： 1.1 *   *  @author  ： 苏若年         发送邮件 *     *  @since   ： 1.0      创建时间:    2013-5-7 下午02:44:02 *      *  TODO     :  * */public class ThreeDSFileReader  extends BranchGroup{            /**     *      * 读取ObjModel文件     *      * @param filePath    3ds文件路径     *      */    public ThreeDSFileReader(String filePath){        BranchGroup branchGroup = new BranchGroup();        Loader3DS l3ds = new Loader3DS();          Scene scene = null;        try {            scene = l3ds.load(filePath);        } catch (Exception e) {            e.printStackTrace();            System.out.println("3DS模型加载失败" + e.getMessage());        }        branchGroup.addChild(scene.getSceneGroup());        this.addChild(branchGroup);            }}

加载模型到场景

package com.java3d.dennist.loader;import java.applet.Applet;import java.awt.BorderLayout;import javax.media.j3d.Alpha;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.Vector3d;import javax.vecmath.Vector3f;import com.sun.j3d.utils.applet.MainFrame;import com.sun.j3d.utils.universe.SimpleUniverse;import com.sun.j3d.utils.universe.ViewingPlatform;/** * *  com.java3d.dennist.loaderJavaModel3dsLoaderApp.java    * *  @version ： 1.1 *   *  @author  ： 苏若年         发送邮件 *     *  @since   ： 1.0      创建时间:    2013-5-7 下午02:57:32 *      *  TODO     :  * */public class JavaModel3dsLoaderApp extends Applet{    public BranchGroup createSceneGraph(){        // 创建场景图分支        BranchGroup group = new BranchGroup();                // 几何变换组节点        TransformGroup transGroup = new TransformGroup();        // 几何变换        Transform3D trans3d = new Transform3D();        // 缩放变换        trans3d.setScale(0.7);        //将几何变换节点对象添加到节点组        transGroup.setTransform(trans3d);        //将几何变化组添加到场景        group.addChild(transGroup);                // 球体作用范围边界对象        BoundingSphere bound= new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);        Color3f bgColor = new Color3f(0.05f,0.05f,0.2f);        Background bg = new Background(bgColor);        bg.setApplicationBounds(bound);        group.addChild(bg);                        // 设置光源        Color3f lightColor = new Color3f(1.0f,1.0f,0.9f);        Vector3f lightDirection = new Vector3f(4.0f,-7.0f,-12.0f);        //设置定向光的颜色和影响范围        DirectionalLight light = new DirectionalLight(lightColor, lightDirection);        light.setInfluencingBounds(bound);        //将光源添加到场景        group.addChild(light);                //几何变换组节点 - 加载外部模型        TransformGroup objTrans = new TransformGroup();        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);        //加载Obj格式的模型文件        objTrans.addChild(new ThreeDSFileReader("F:/rexue.3ds"));        //将模型添加到变换组节点        transGroup.addChild(objTrans);                //设置几何变化,绕Y轴中心旋转        Transform3D yAxis = new Transform3D();        Alpha rotationAlpha = new Alpha(-1,Alpha.INCREASING_ENABLE,                0,0,                6000,0,0,                0,0,0);        RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans,yAxis,0.0f,(float)Math.PI*2.0f);        rotator.setSchedulingBounds(bound);        objTrans.addChild(rotator);                group.compile();                return group;    }            public  JavaModel3dsLoaderApp(){                setLayout(new BorderLayout());        // 创建3D场景绘制画布Canvas3D对象        Canvas3D canvas = new Canvas3D(null);        add("Center",canvas);        BranchGroup scene = createSceneGraph();                SimpleUniverse universe = new SimpleUniverse(canvas);        //设定用户视角        Point3d userPosition = new Point3d(0,18,18);        initUserPosition(universe,userPosition);        //universe.getViewingPlatform().setNominalViewingTransform();        universe.addBranchGraph(scene);    }            //初始化用户视角    private void initUserPosition(SimpleUniverse universe,Point3d userPosition){        ViewingPlatform vp = universe.getViewingPlatform();        TransformGroup steerTG = vp.getViewPlatformTransform();        Transform3D t3d = new Transform3D();        steerTG.getTransform(t3d);        t3d.lookAt(userPosition, new Point3d(0,0,0), new Vector3d(0,1,0));        t3d.invert();        steerTG.setTransform(t3d);    }              public static void main(String[] args) {        new MainFrame(new JavaModel3dsLoaderApp(), 340,340);     }}

上面实例实现的效果是,模型绕Y轴旋转,下面实例中我们实现鼠标触控模型三维空间任意旋转变换.

实例二 ： 实现鼠标触控模型三维空间任意旋转

效果图:

实例代码：

package com.java3d.dennist.loader;import java.applet.Applet;import java.awt.BorderLayout;import javax.media.j3d.Alpha;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.Vector3d;import javax.vecmath.Vector3f;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.universe.SimpleUniverse;import com.sun.j3d.utils.universe.ViewingPlatform;/** * *  com.java3d.dennist.loaderJavaModel3dsLoaderApp.java    * *  @version ： 1.1 *   *  @author  ： 苏若年         发送邮件 *     *  @since   ： 1.0      创建时间:    2013-5-7 下午02:57:32 *      *  TODO     :  * */public class JavaModel3dsLoaderApp extends Applet{    public BranchGroup createSceneGraph(){        // 创建场景图分支        BranchGroup group = new BranchGroup();                // 几何变换组节点        TransformGroup transGroup = new TransformGroup();        // 几何变换        Transform3D trans3d = new Transform3D();        // 缩放变换        trans3d.setScale(0.9);        //将几何变换节点对象添加到节点组        transGroup.setTransform(trans3d);        //将几何变化组添加到场景        group.addChild(transGroup);                // 球体作用范围边界对象        BoundingSphere bound= new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);        Color3f bgColor = new Color3f(0.05f,0.05f,0.2f);        Background bg = new Background(bgColor);        bg.setApplicationBounds(bound);        group.addChild(bg);                        // 设置光源        Color3f lightColor = new Color3f(1.0f,1.0f,0.9f);        Vector3f lightDirection = new Vector3f(4.0f,-7.0f,-12.0f);        //设置定向光的颜色和影响范围        DirectionalLight light = new DirectionalLight(lightColor, lightDirection);        light.setInfluencingBounds(bound);        //将光源添加到场景        group.addChild(light);                //几何变换组节点 - 加载外部模型        TransformGroup objTrans = new TransformGroup();        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);        //加载Obj格式的模型文件        objTrans.addChild(new ThreeDSFileReader("F:/rexue.3ds"));        //将模型添加到变换组节点        transGroup.addChild(objTrans);                // 添加通过鼠标左键控制3D物体旋转的对象        MouseRotate behavior = new MouseRotate();        behavior.setTransformGroup(objTrans);        objTrans.addChild(behavior);        behavior.setSchedulingBounds(bound);        // 添加鼠标右键的拖拉运动控制3D物体（X,Y）平移        MouseTranslate tr = new MouseTranslate();        tr.setTransformGroup(objTrans);        objTrans.addChild(tr);        tr.setSchedulingBounds(bound);        // 添加鼠标滚轮控制3D物体沿Z轴        MouseWheelZoom tr1 = new MouseWheelZoom();        tr1.setTransformGroup(objTrans);        objTrans.addChild(tr1);        tr1.setSchedulingBounds(bound);                group.compile();                return group;    }            public  JavaModel3dsLoaderApp(){                setLayout(new BorderLayout());        // 创建3D场景绘制画布Canvas3D对象        Canvas3D canvas = new Canvas3D(null);        add("Center",canvas);        BranchGroup scene = createSceneGraph();                SimpleUniverse universe = new SimpleUniverse(canvas);        //设定用户视角        Point3d userPosition = new Point3d(0,10,18);        initUserPosition(universe,userPosition);        //universe.getViewingPlatform().setNominalViewingTransform();        universe.addBranchGraph(scene);    }            //初始化用户视角    private void initUserPosition(SimpleUniverse universe,Point3d userPosition){        ViewingPlatform vp = universe.getViewingPlatform();        TransformGroup steerTG = vp.getViewPlatformTransform();        Transform3D t3d = new Transform3D();        steerTG.getTransform(t3d);        t3d.lookAt(userPosition, new Point3d(0,0,0), new Vector3d(0,1,0));        t3d.invert();        steerTG.setTransform(t3d);    }              public static void main(String[] args) {        new MainFrame(new JavaModel3dsLoaderApp(), 340,340);     }}

 

附录:

附录一: 不依赖Applet实现Java3D加载外部模型

package com.java3d.dennist.study;import com.java3d.dennist.loader.ThreeDSFileReader;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.universe.SimpleUniverse;  import javax.media.j3d.Background;import javax.media.j3d.BoundingSphere;  import javax.media.j3d.BranchGroup;  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;  /** * * *  @version ： 1.1 *   *  @author  ： 苏若年         发送邮件 *     *  @since   ： 1.0      创建时间:    2013-5-6 下午04:54:04 *      *  TODO     : Java3D技术 加载3ds模型 * */public class Java3dsLoader {    public Java3dsLoader(){        build();    }        private void build() {          try {              BranchGroup bg = createSceneGraph();              SimpleUniverse u = new SimpleUniverse();              u.getViewingPlatform().setNominalViewingTransform();              u.addBranchGraph(bg);          } catch (Exception e) {              e.printStackTrace();        }     }          public BranchGroup createSceneGraph(){        // 创建场景图分支        BranchGroup group = new BranchGroup();                // 几何变换组节点        TransformGroup transGroup = new TransformGroup();        // 几何变换        Transform3D trans3d = new Transform3D();        // 缩放变换        trans3d.setScale(0.7);        //将几何变换节点对象添加到节点组        transGroup.setTransform(trans3d);        //将几何变化组添加到场景        group.addChild(transGroup);                // 球体作用范围边界对象        BoundingSphere bound= new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);        Color3f bgColor = new Color3f(0.05f,0.05f,0.2f);        Background bg = new Background(bgColor);        bg.setApplicationBounds(bound);        group.addChild(bg);                        // 设置光源        Color3f lightColor = new Color3f(1.0f,1.0f,0.9f);        Vector3f lightDirection = new Vector3f(4.0f,-7.0f,-12.0f);        //设置定向光的颜色和影响范围        DirectionalLight light = new DirectionalLight(lightColor, lightDirection);        light.setInfluencingBounds(bound);        //将光源添加到场景        group.addChild(light);                //几何变换组节点 - 加载外部模型        TransformGroup objTrans = new TransformGroup();        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);        //加载Obj格式的模型文件        objTrans.addChild(new ThreeDSFileReader("F:/rexue.3ds"));        //将模型添加到变换组节点        transGroup.addChild(objTrans);                // 添加通过鼠标左键控制3D物体旋转的对象        MouseRotate behavior = new MouseRotate();        behavior.setTransformGroup(objTrans);        objTrans.addChild(behavior);        behavior.setSchedulingBounds(bound);        // 添加鼠标右键的拖拉运动控制3D物体（X,Y）平移        MouseTranslate tr = new MouseTranslate();        tr.setTransformGroup(objTrans);        objTrans.addChild(tr);        tr.setSchedulingBounds(bound);        // 添加鼠标滚轮控制3D物体沿Z轴        MouseWheelZoom tr1 = new MouseWheelZoom();        tr1.setTransformGroup(objTrans);        objTrans.addChild(tr1);        tr1.setSchedulingBounds(bound);                group.compile();                return group;    }            public static void main(String[] args) {        new Java3dsLoader();    }}

附录二: 基于swing实现Java3D加载外部模型

package com.java3d.dennist.study;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Frame;import java.awt.GraphicsConfiguration;import java.awt.GraphicsDevice;import java.awt.GraphicsEnvironment;import java.awt.Rectangle;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;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.GraphicsConfigTemplate3D;import javax.media.j3d.Locale;import javax.media.j3d.PhysicalBody;import javax.media.j3d.PhysicalEnvironment;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.java3d.dennist.loader.ThreeDSFileReader;import com.microcrowd.loader.java3d.max3ds.Loader3DS;import com.sun.j3d.loaders.Scene;import com.sun.j3d.utils.behaviors.mouse.MouseRotate;import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;import com.sun.j3d.utils.behaviors.mouse.MouseWheelZoom;/** *  * @version ： 1.1 *  * @author  ： 苏若年 发送邮件 *  * @since   ： 1.0 创建时间: 2013-5-6 下午05:09:47 *  *  TODO    : 基于Swing实现Java3D 模型加载 *  */public class JFrame3dsLoader {    private static final long serialVersionUID = 1L;    /**     * 测试方法     */    public static void main(String[] args) {        JFrame3dsLoader appwin = new JFrame3dsLoader();        appwin.initialize();    }    /**     * This is the default constructor     */    public JFrame3dsLoader() {            }    /**     * 初始化Frame主窗口     *      * @return void     */    private void initialize() {        // 实例化GraphicsConfiguration的方法1        GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();        GraphicsEnvironment env = GraphicsEnvironment                .getLocalGraphicsEnvironment();        GraphicsDevice device = env.getDefaultScreenDevice();        GraphicsConfiguration config = device.getBestConfiguration(template);        // 新建Frame窗口对象        Frame dsframe = new Frame(config);        // 若Frame对象的布局方式为绝对布局null，就无法显示3D虚拟场景        dsframe.setLayout(new BorderLayout());        dsframe.setTitle("3DS模型显示区");        dsframe.setBounds(new Rectangle(0, 0, 433, 458));        // 添加窗口监听器实现关闭窗口（Frame），关闭窗口时退出程序        dsframe.addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent ev) {                System.out.print("退出程序！");                System.exit(0);            }        });        // 新建3D场景绘制画布Canvas3D对象        Canvas3D cv = new Canvas3D(config);        dsframe.add(cv, BorderLayout.CENTER);        // 使Frame对象可视化        dsframe.setVisible(true);        // 在Canvas3D画布上绘制3D场景        creat3DObject(cv);    }    /**     * 创建3D虚拟场景     */    private void creat3DObject(Canvas3D cv) {        // 创建超结构（create superstructure）        VirtualUniverse vu = new VirtualUniverse();        Locale loc = new Locale(vu);        // 创建视图分支（create view branch）        BranchGroup bgView = createViewBranch(cv);        bgView.compile();        loc.addBranchGraph(bgView);        BranchGroup bg = createSceneGraph();        bg.compile();        loc.addBranchGraph(bg);    }    /**     * 生成BranchGroup的私有方法，创建视图分支     *      * @param cv     *            Canvas3D画布对象     */    private BranchGroup createViewBranch(Canvas3D cv) {        // 创建View组件对象        View view = new View();        // 设置投影方式        view.setProjectionPolicy(View.PERSPECTIVE_PROJECTION);        // 创建ViewPlatform叶节点        ViewPlatform vp = new ViewPlatform();        view.addCanvas3D(cv);        view.attachViewPlatform(vp);        view.setPhysicalBody(new PhysicalBody());        // 设置View对象属性        view.setPhysicalEnvironment(new PhysicalEnvironment());        // 几何变换        Transform3D trans = new Transform3D();        // 观察者眼睛的位置        Point3d eye = new Point3d(0, 0, 1 / Math.tan(Math.PI / 8));        // 观察者方向指向的点        Point3d center = new Point3d(0, 0, 0);        // 垂直于观察者方向向上的方向        Vector3d vup = new Vector3d(0, 1, 0);        // 生成几何变换矩阵        trans.lookAt(eye, center, vup);        // 求矩阵的逆        trans.invert();        // 几何变换组点        TransformGroup tg = new TransformGroup(trans);        tg.addChild(vp);        // 创建视图分支        BranchGroup bgView = new BranchGroup();        bgView.addChild(tg);        return bgView;    }        public BranchGroup createSceneGraph(){        // 创建场景图分支        BranchGroup group = new BranchGroup();                // 几何变换组节点        TransformGroup transGroup = new TransformGroup();        // 几何变换        Transform3D trans3d = new Transform3D();        // 缩放变换        trans3d.setScale(0.7);        //将几何变换节点对象添加到节点组        transGroup.setTransform(trans3d);        //将几何变化组添加到场景        group.addChild(transGroup);                // 球体作用范围边界对象        BoundingSphere bound= new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);        Color3f bgColor = new Color3f(0.05f,0.05f,0.2f);        Background bg = new Background(bgColor);        bg.setApplicationBounds(bound);        group.addChild(bg);                        // 设置光源        Color3f lightColor = new Color3f(1.0f,1.0f,0.9f);        Vector3f lightDirection = new Vector3f(4.0f,-7.0f,-12.0f);        //设置定向光的颜色和影响范围        DirectionalLight light = new DirectionalLight(lightColor, lightDirection);        light.setInfluencingBounds(bound);        //将光源添加到场景        group.addChild(light);                //几何变换组节点 - 加载外部模型        TransformGroup objTrans = new TransformGroup();        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);        //加载Obj格式的模型文件        objTrans.addChild(new ThreeDSFileReader("F:/rexue.3ds"));        //将模型添加到变换组节点        transGroup.addChild(objTrans);                // 添加通过鼠标左键控制3D物体旋转的对象        MouseRotate behavior = new MouseRotate();        behavior.setTransformGroup(objTrans);        objTrans.addChild(behavior);        behavior.setSchedulingBounds(bound);        // 添加鼠标右键的拖拉运动控制3D物体（X,Y）平移        MouseTranslate tr = new MouseTranslate();        tr.setTransformGroup(objTrans);        objTrans.addChild(tr);        tr.setSchedulingBounds(bound);        // 添加鼠标滚轮控制3D物体沿Z轴        MouseWheelZoom tr1 = new MouseWheelZoom();        tr1.setTransformGroup(objTrans);        objTrans.addChild(tr1);        tr1.setSchedulingBounds(bound);                group.compile();                return group;    }    }

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