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
View Code 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
View Code 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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