如何使用Java3D API在java中绘制简单的3D点（x，y，z）？

Question

我正在使用Java技术在netbeans平台上制作桌面应用程序。我做了一些图像处理，数据库功能，图像捕获过程;但现在我想在3D视图中绘制图像 所以，我认为首先我必须制作我的.tiff 16位灰度图像的点阵，然后使用这个点阵。我试了一下，我的代码在下面，但它不起作用。
那么我应该如何使用这个点数组在3D视图中绘制我的图像呢？

import java.awt.BorderLayout;
import com.sun.j3d.utils.universe.*;
import java.awt.image.BufferedImage;
import javax.media.j3d.*;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.vecmath.Color3f;
import javax.vecmath.Point3f;

public final class HelloJava3Da extends JPanel {

    PlanarImage plImg3 = JAI.create("fileload", "C:\\Users\\Desktop\\myImage.tiff");
    BufferedImage histImage = plImg3.getAsBufferedImage();
    int s = 0, count = 0;

    public HelloJava3Da() {
        setLayout(new BorderLayout());
        Canvas3D canvas3D = new Canvas3D(null);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);


        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,          204.0f), ColoringAttributes.SHADE_FLAT);
        app.setColoringAttributes(ca);

        Point3f[] plaPts = new Point3f[histImage.getWidth()*histImage.getHeight()];

        for (int i = 0; i < histImage.getWidth(); i++) {
            for (int j = 0; j < histImage.getHeight(); j++) {
                s=histImage.getRaster().getSample(i, j, 0);
                plaPts[count] = new Point3f(i,j,s);
                count++;
            }
        }
        PointArray pla = new PointArray(histImage.getWidth()*histImage.getHeight(), GeometryArray.COORDINATES);
        pla.setCoordinates(0, plaPts);
        Shape3D plShape = new Shape3D(pla, app);
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(plShape);
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new HelloJava3Da()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

Answer 1

使用SimpleUniverse GraphicsConfiguration类创建Canvas3D和SimpleUniverse.getPreferredConfiguration()。然后创建一个BranchGraph。添加TransformGraph作为BranchGraph的子项。然后将Shape3D添加为TransformGraph的子项。 Shape3D必须有两件事：几何（你的点数组）和外观。从外观上看，您可以制作多种规格的材料和照明。

如果您只使用点数组，则只能看到点数。如果你想要填充多边形或LineStripArray，如果你想要线条，应该使用TriangleStripArray或类似的东西。

使用TransformGroup旋转和翻译。别忘了加光。

TransformGroup需要一个Transform3D类作为旋转和平移或缩放的参数。

如果你的Shape3D是一个表面，你可以给它定制颜色或使用材料并在它附近放一个灯，否则你看不到它。别忘了设置lightsource绑定范围，以便光线到达对象。

• PointArray ---＆gt;云状形状
• LineArray ---＆gt;对于虚线
• LineStripArray - ＆gt; for lines
• TriangleArray ---＆gt;离婚三角形（表面）
• TriangleStripArray ---＆gt;相邻三角形（表面）
• TriangleFanArray ----＆gt;像构建三角形一样（表面）
• QuadArray ----＆gt;需要六个四边形才能拥有立方体
• QuadStripArray ---＆gt;可以构建一个坐标数组较小的立方体

另一件重要的事情：

simpleU.getViewingPlatform().getViewPlatform().setActivationRadius(300);
    SimpleU.getViewer().getView().setBackClipDistance ( 300.0 );

使你的观察范围更远，所以移动时物体不会消失。

将鼠标互动附加到您的变换组

    MouseRotate m1=new MouseRotate();
    MouseZoom m2=new MouseZoom();
    MouseTranslate m3=new MouseTranslate();

如果要将1580 x 1050图像映射到默认的3D视图范围，则应将点坐标除以1000.（或在变换组中缩小至第1000个）

寻找教程：

http://www.java3d.org/

http://www.java3d.org/tutorial.html

在这里，我将您的教程调整为energon.class

//skipped imports(char limit in this post)
public final class energon extends JPanel {


    int s = 0, count = 0;

    public energon() {
        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);//See the added gc? this is a preferred config
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);


        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,          204.0f), ColoringAttributes.SHADE_FLAT);
        app.setColoringAttributes(ca);

        Point3f[] plaPts = new Point3f[4];

        for (int i = 0; i < 2; i++) {
            for (int j = 0; j <2; j++) {
                plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
                //Look up line, i and j are divided by 10.0f to be able to
                //see the points inside the view screen
                count++;
            }
        }
        PointArray pla = new PointArray(4, GeometryArray.COORDINATES);
        pla.setCoordinates(0, plaPts);
        Shape3D plShape = new Shape3D(pla, app);
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(plShape);
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：

好的，我们可以添加一个点大小，以便我们可以清楚地看到它们（将在一分钟内添加）

新代码（仅添加2-3行）

import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;

import com.sun.j3d.utils.universe.*;

import java.awt.image.BufferedImage;
import javax.media.j3d.*;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.vecmath.Color3f;
import javax.vecmath.Point3f;

public final class energon extends JPanel {


    int s = 0, count = 0;

    public energon() {
        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);


        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,          204.0f), ColoringAttributes.SHADE_FLAT);
        app.setColoringAttributes(ca);

        Point3f[] plaPts = new Point3f[4];

        for (int i = 0; i < 2; i++) {
            for (int j = 0; j <2; j++) {
                plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
                count++;
            }
        }
        PointArray pla = new PointArray(4, GeometryArray.COORDINATES);

        pla.setCoordinates(0, plaPts);
        //between here!
        PointAttributes a_point_just_bigger=new PointAttributes();
        a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point
        a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
        app.setPointAttributes(a_point_just_bigger);
        //and here! sets the point-attributes so it is easily seen.
        Shape3D plShape = new Shape3D(pla, app);
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(plShape);
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：

这是另一个使用trianglestriparray绘制一种箭头形状，同时你可以使用鼠标按钮（其中3个）放大，旋转和平移。

//skipped imports beause of char limit in this post
public final class energon extends JPanel {



    int s = 0, count = 0;

    public energon() {
        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);


        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,204.0f), ColoringAttributes.SHADE_FLAT);
        app.setColoringAttributes(ca);
        Point3f[] plaPts = new Point3f[5];
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j <2; j++) {
                plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
                count++;
            }
        }
        plaPts[count] = new Point3f(3.0f/10.0f,2.0f/10.0f,0);
        int[]intArr=new int[5];
        intArr[0]=3;intArr[1]=4;intArr[2]=4;intArr[3]=3;intArr[4]=3;

        TriangleStripArray pla =new TriangleStripArray(20, GeometryArray.COLOR_3|GeometryArray.NORMALS|GeometryArray.COORDINATES,intArr);
        pla.setCoordinates(0, plaPts);
        PointAttributes a_point_just_bigger=new PointAttributes();
        a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point
        a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
        app.setPointAttributes(a_point_just_bigger);
        PolygonAttributes la=new PolygonAttributes();
        la.setPolygonMode(PolygonAttributes.POLYGON_FILL);
        la.setCullFace(PolygonAttributes.CULL_NONE);
        app.setPolygonAttributes(la);
        Material matt=new Material();
        matt.setAmbientColor(new Color3f(1,1,1));
        matt.setDiffuseColor(new Color3f(0.5f,0.5f,0.7f));
        matt.setEmissiveColor(new Color3f(0.2f,0.2f,0.3f));
        matt.setShininess(0.5f);
        matt.setSpecularColor(new Color3f(0.4f,0.6f,0.9f));
        matt.setLightingEnable(true);

        app.setMaterial(matt);
        RenderingAttributes ra=new RenderingAttributes();
        ra.setIgnoreVertexColors(true);
        app.setRenderingAttributes(ra);
        Shape3D plShape = new Shape3D(pla, app);

        TransformGroup objRotate = new TransformGroup();

        MouseRotate mr=new MouseRotate();
        mr.setTransformGroup(objRotate);
        mr.setSchedulingBounds(new BoundingSphere());
        lineGroup.addChild(mr);
        MouseZoom mz=new MouseZoom();
        mz.setTransformGroup(objRotate);
        mz.setSchedulingBounds(new BoundingSphere());
        lineGroup.addChild(mz);
        MouseTranslate msl=new MouseTranslate();
        msl.setTransformGroup(objRotate);
        msl.setSchedulingBounds(new BoundingSphere());
        lineGroup.addChild(msl);


        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(plShape);
        AmbientLight al=new AmbientLight();
      //  al.addScope(objRotate);
        al.setBounds(new BoundingSphere());
        al.setEnable(true);
        al.setColor(new Color3f(1,1,1));

        lineGroup.addChild(objRotate);
        lineGroup.addChild(al);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：

你想改变点的颜色吗？这是新版本：

//skipping imports..
public final class energon extends JPanel {


    int s = 0, count = 0;

    public energon() {
        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();
        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();
        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        ColoringAttributes ca = new ColoringAttributes(new Color3f(204.0f, 204.0f,          204.0f), ColoringAttributes.SHADE_FLAT);
        app.setColoringAttributes(ca);

        Point3f[] plaPts = new Point3f[4];
        Color3f[] colPts=new Color3f[4]; //parallel to coordinates, colors.
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j <2; j++) {
                plaPts[count] = new Point3f(i/10.0f,j/10.0f,0);
                colPts[count]=new Color3f(i/3.0f,j/3.0f,(float) ((i+j)/3.0));//my arbitrary color set :)
                count++;
            }
        }
        PointArray pla = new PointArray(4, GeometryArray.COORDINATES|GeometryArray.COLOR_3);
        pla.setColors(0,colPts); //this is the color-array setting
        pla.setCoordinates(0, plaPts); 
        //between here!
        PointAttributes a_point_just_bigger=new PointAttributes();
        a_point_just_bigger.setPointSize(10.0f);//10 pixel-wide point

        a_point_just_bigger.setPointAntialiasingEnable(true);//now points are sphere-like(not a cube)
        app.setPointAttributes(a_point_just_bigger);
        //and here! sets the point-attributes so it is easily seen.
        Shape3D plShape = new Shape3D(pla, app);
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(plShape);
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：

自定义立方体形状的新示例和带有左键 - 鼠标按钮交互的两个定向灯：

//skipped imports relating with char limit in this post
public final class energon extends JPanel {
    int s = 0, count = 0;

    public energon() {

        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();
        scene.compile();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);


        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();

        QuadArray lsa = new QuadArray(48,QuadArray.COORDINATES|QuadArray.NORMALS);
        Vector3f [] normals=new Vector3f[24];
        for(int i=0;i<24;i++)normals[i]=new Vector3f();
        Point3f [] pts=new Point3f[24];
        for(int i=0;i<24;i++)pts[i]=new Point3f();
        Color3f [] clrs=new Color3f[24];
        for(int i=0;i<24;i++)clrs[i]=new Color3f(0.5f,0.5f,0.5f);
        //cube=6 quads 
        //first quad
        pts[0].x=-0.5f;pts[0].y=-0.5f;pts[0].z=-0.5f;
        pts[1].x=-0.5f;pts[1].y=-0.5f;pts[1].z=0.5f;
        pts[2].x=-0.5f;pts[2].y=0.5f;pts[2].z=0.5f;
        pts[3].x=-0.5f;pts[3].y=0.5f;pts[3].z=-0.5f;
        normals[0].x=-1;normals[1].x=-1;normals[2].x=-1;normals[3].x=-1;
        //second quad
        pts[4].x=0.5f;pts[4].y=-0.5f;pts[4].z=-0.5f;
        pts[5].x=0.5f;pts[5].y=-0.5f;pts[5].z=0.5f;
        pts[6].x=0.5f;pts[6].y=0.5f;pts[6].z=0.5f;
        pts[7].x=0.5f;pts[7].y=0.5f;pts[7].z=-0.5f;
        normals[4].x=1;normals[5].x=1;normals[6].x=1;normals[7].x=1;

        //third quad
        pts[8].x=-0.5f;pts[8].y=-0.5f;pts[8].z=-0.5f;
        pts[9].x=0.5f;pts[9].y=-0.5f;pts[9].z=-0.5f;
        pts[10].x=0.5f;pts[10].y=0.5f;pts[10].z=-0.5f;
        pts[11].x=-0.5f;pts[11].y=0.5f;pts[11].z=-0.5f;
        normals[8].z=-1;normals[9].z=-1;normals[10].z=-1;normals[11].z=-1;
        //fourth quad
        pts[12].x=-0.5f;pts[12].y=-0.5f;pts[12].z=0.5f;
        pts[13].x=0.5f;pts[13].y=-0.5f;pts[13].z=0.5f;
        pts[14].x=0.5f;pts[14].y=0.5f;pts[14].z=0.5f;
        pts[15].x=-0.5f;pts[15].y=0.5f;pts[15].z=0.5f;
        normals[12].z=1;normals[13].z=1;normals[14].z=1;normals[15].z=1;
        //fifth quad
        pts[16].x=-0.5f;pts[16].y=-0.5f;pts[16].z=-0.5f;
        pts[17].x=-0.5f;pts[17].y=-0.5f;pts[17].z=0.5f;
        pts[18].x=0.5f;pts[18].y=-0.5f;pts[18].z=0.5f;
        pts[19].x=0.5f;pts[19].y=-0.5f;pts[19].z=-0.5f;
        normals[16].y=-1;normals[17].y=-1;normals[18].y=-1;normals[19].y=-1;
        //sixth quad
        pts[20].x=-0.5f;pts[20].y=0.5f;pts[20].z=-0.5f;
        pts[21].x=-0.5f;pts[21].y=0.5f;pts[21].z=0.5f;
        pts[22].x=0.5f;pts[22].y=0.5f;pts[22].z=0.5f;
        pts[23].x=0.5f;pts[23].y=0.5f;pts[23].z=-0.5f;
        normals[20].y=1;normals[21].y=1;normals[22].y=1;normals[23].y=1;
        lsa.setNormals(0, normals);
        lsa.setCoordinates(0, pts);
        Shape3D sh=new Shape3D();
        PolygonAttributes pa=new PolygonAttributes();
        pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
        pa.setCullFace(PolygonAttributes.CULL_NONE);
        Material mat=new Material();
        mat.setEmissiveColor(new Color3f(0.5f,0.5f,0.5f));
        mat.setAmbientColor(new Color3f(0.1f,0.1f,0.1f));
        mat.setDiffuseColor(new Color3f(0.2f,0.3f,0.4f));
        mat.setSpecularColor(new Color3f(0.6f,0.3f,0.2f));
        mat.setLightingEnable(true);
        RenderingAttributes ra=new RenderingAttributes();
        ra.setIgnoreVertexColors(true);
        ColoringAttributes ca=new ColoringAttributes();
        ca.setShadeModel(ColoringAttributes.SHADE_GOURAUD);
        ca.setColor(new Color3f(0.2f,0.5f,0.9f));
        app.setColoringAttributes(ca);
        app.setRenderingAttributes(ra);   
        app.setMaterial(mat);
        app.setPolygonAttributes(pa);
        sh.setGeometry(lsa);
        sh.setAppearance(app);
        sh.setPickable(true); 
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(sh);

        DirectionalLight light1=new DirectionalLight();
        light1.setInfluencingBounds(new BoundingSphere(new Point3d(-5.0,0,0),10.0));
        light1.setColor(new Color3f(1f,1f,1f));
        light1.setDirection(new Vector3f(0,1,0));
        objRotate.addChild(light1);
        DirectionalLight light2=new DirectionalLight();
        light2.setInfluencingBounds(new BoundingSphere(new Point3d(5.0,0,0),10.0));
        light2.setColor(new Color3f(0.5f,1f,0.5f));
        light2.setDirection(new Vector3f(0,-1,0));
        objRotate.addChild(light2);
        MouseRotate f1=new MouseRotate();
        f1.setSchedulingBounds(new BoundingSphere());
        f1.setTransformGroup(objRotate);
        lineGroup.addChild(f1);
        objRotate.addChild(new Sphere(0.60f,1,128));
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：

最重要的部分是，您可以使用三角测量仪仅使用点坐标来获得真实的3D形状

        GeometryInfo ginfo=new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
        Triangulator tr = new Triangulator();
        NormalGenerator normalGenerator = new NormalGenerator();
        Stripifier st = new Stripifier();  
        int [] iint=new int[]{4,4,4,4,4,4};-->each face of cube has 4 points
        ginfo.setStripCounts(iint);
        ginfo.setCoordinates(pts); 
        tr.triangulate(ginfo); // ginfo contains the geometry     
        normalGenerator.generateNormals( ginfo );
        st.stripify(ginfo);
        sh.setGeometry(ginfo.getGeometryArray()); // shape is a Shape3D.
        //now you can use Shape3D-type sh as a 3D-surface-containing shape

在最后一个例子中，你必须使用quadarray但是现在，你可以只用点和三角形来做同样的事情：

//skipping imports since char limit is reached in this answer
public final class energon extends JPanel {
    int s = 0, count = 0;
    public energon() {
        setLayout(new BorderLayout());
        GraphicsConfiguration gc=SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(gc);
        add("Center", canvas3D);
        BranchGroup scene = createSceneGraph();
        scene.compile();
        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
        // This moves the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        simpleU.getViewingPlatform().setNominalViewingTransform();
        simpleU.addBranchGraph(scene);
    }
    public BranchGroup createSceneGraph() {
        BranchGroup lineGroup = new BranchGroup();
        Appearance app = new Appearance();
        Vector3f [] normals=new Vector3f[24];
        for(int i=0;i<24;i++)normals[i]=new Vector3f();
        Point3f [] pts=new Point3f[24];
        for(int i=0;i<24;i++)pts[i]=new Point3f();
        Color3f [] clrs=new Color3f[24];
        for(int i=0;i<24;i++)clrs[i]=new Color3f(0.5f,0.5f,0.5f);
        //cube=6 quads 
        //first quad
        pts[0].x=-0.5f;pts[0].y=-0.5f;pts[0].z=-0.5f;
        pts[1].x=-0.5f;pts[1].y=-0.5f;pts[1].z=0.5f;
        pts[2].x=-0.5f;pts[2].y=0.5f;pts[2].z=0.5f;
        pts[3].x=-0.5f;pts[3].y=0.5f;pts[3].z=-0.5f;
        normals[0].x=-1;normals[1].x=-1;normals[2].x=-1;normals[3].x=-1;
        //second quad
        pts[4].x=0.5f;pts[4].y=-0.5f;pts[4].z=-0.5f;
        pts[5].x=0.5f;pts[5].y=-0.5f;pts[5].z=0.5f;
        pts[6].x=0.5f;pts[6].y=0.5f;pts[6].z=0.5f;
        pts[7].x=0.5f;pts[7].y=0.5f;pts[7].z=-0.5f;
        normals[4].x=1;normals[5].x=1;normals[6].x=1;normals[7].x=1;
        //third quad
        pts[8].x=-0.5f;pts[8].y=-0.5f;pts[8].z=-0.5f;
        pts[9].x=0.5f;pts[9].y=-0.5f;pts[9].z=-0.5f;
        pts[10].x=0.5f;pts[10].y=0.5f;pts[10].z=-0.5f;
        pts[11].x=-0.5f;pts[11].y=0.5f;pts[11].z=-0.5f;
        normals[8].z=-1;normals[9].z=-1;normals[10].z=-1;normals[11].z=-1;
        //fourth quad
        pts[12].x=-0.5f;pts[12].y=-0.5f;pts[12].z=0.5f;
        pts[13].x=0.5f;pts[13].y=-0.5f;pts[13].z=0.5f;
        pts[14].x=0.5f;pts[14].y=0.5f;pts[14].z=0.5f;
        pts[15].x=-0.5f;pts[15].y=0.5f;pts[15].z=0.5f;
        normals[12].z=1;normals[13].z=1;normals[14].z=1;normals[15].z=1;
        //fifth quad
        pts[16].x=-0.5f;pts[16].y=-0.5f;pts[16].z=-0.5f;
        pts[17].x=-0.5f;pts[17].y=-0.5f;pts[17].z=0.5f;
        pts[18].x=0.5f;pts[18].y=-0.5f;pts[18].z=0.5f;
        pts[19].x=0.5f;pts[19].y=-0.5f;pts[19].z=-0.5f;
        normals[16].y=-1;normals[17].y=-1;normals[18].y=-1;normals[19].y=-1;
        //sixth quad
        pts[20].x=-0.5f;pts[20].y=0.5f;pts[20].z=-0.5f;
        pts[21].x=-0.5f;pts[21].y=0.5f;pts[21].z=0.5f;
        pts[22].x=0.5f;pts[22].y=0.5f;pts[22].z=0.5f;
        pts[23].x=0.5f;pts[23].y=0.5f;pts[23].z=-0.5f;
        normals[20].y=1;normals[21].y=1;normals[22].y=1;normals[23].y=1;
        Shape3D sh=new Shape3D();
        PolygonAttributes pa=new PolygonAttributes();
        pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
        pa.setCullFace(PolygonAttributes.CULL_NONE);
        Material mat=new Material();
        mat.setEmissiveColor(new Color3f(0.5f,0.5f,0.5f));
        mat.setAmbientColor(new Color3f(0.1f,0.1f,0.1f));
        mat.setDiffuseColor(new Color3f(0.2f,0.3f,0.4f));
        mat.setSpecularColor(new Color3f(0.6f,0.3f,0.2f));
        mat.setLightingEnable(true);
        RenderingAttributes ra=new RenderingAttributes();
        ra.setIgnoreVertexColors(true);
        ColoringAttributes ca=new ColoringAttributes();
        ca.setShadeModel(ColoringAttributes.SHADE_GOURAUD);
        ca.setColor(new Color3f(0.2f,0.5f,0.9f));
        app.setColoringAttributes(ca);
        app.setRenderingAttributes(ra);
        app.setMaterial(mat);
        app.setPolygonAttributes(pa);
        sh.setAppearance(app);
        sh.setPickable(true);
        GeometryArray ga=null;
        GeometryInfo ginfo=new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
        Triangulator tr = new Triangulator();
        NormalGenerator normalGenerator = new NormalGenerator();
        Stripifier st = new Stripifier();  
        int [] iint=new int[]{4,4,4,4,4,4};
        ginfo.setStripCounts(iint);
        ginfo.setCoordinates(pts); 
        tr.triangulate(ginfo); // ginfo contains the geometry     
        normalGenerator.generateNormals( ginfo );
        st.stripify(ginfo);
        sh.setGeometry(ginfo.getGeometryArray()); // shape is a Shape3D.
        TransformGroup objRotate = new TransformGroup();
        objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRotate.addChild(sh);   
        DirectionalLight light1=new DirectionalLight();
        light1.setInfluencingBounds(new BoundingSphere(new Point3d(-5.0,0,0),10.0));
        light1.setColor(new Color3f(1f,1f,1f));
        light1.setDirection(new Vector3f(0,1,0));
        objRotate.addChild(light1);
        DirectionalLight light2=new DirectionalLight();
        light2.setInfluencingBounds(new BoundingSphere(new Point3d(5.0,0,0),10.0));
        light2.setColor(new Color3f(0.5f,1f,0.5f));
        light2.setDirection(new Vector3f(0,-1,0));
        objRotate.addChild(light2);
        MouseRotate f1=new MouseRotate();
        f1.setSchedulingBounds(new BoundingSphere());
        f1.setTransformGroup(objRotate);
        lineGroup.addChild(f1);
        objRotate.addChild(new Sphere(0.60f,1,128));
        lineGroup.addChild(objRotate);
        return lineGroup;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(new energon()));
        frame.setSize(300, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

输出：同！你只需给出点的坐标和面顶点数

• 设置剥离计数
• 设置坐标（来自你的tiff）
• 三角测量
• 生成法线
• stripify
• .getGeometry（成品）