Java Tips - How to create a Sphere


import java.applet.Applet;

import java.awt.BorderLayout;



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.Material;

import javax.vecmath.Color3f;

import javax.vecmath.Vector3f;



import com.sun.j3d.utils.applet.MainFrame;

import com.sun.j3d.utils.geometry.Sphere;

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



public class LitSphereApp extends Applet {



  Appearance createAppearance() {



    Appearance appear = new Appearance();

    Material material = new Material();

    //      material.setDiffuseColor(0.0f, 0.0f, 1.0f);

    material.setShininess(50.0f);

    // make modifications to default material properties

    appear.setMaterial(material);



    //      ColoringAttributes colorAtt = new ColoringAttributes();

    //      colorAtt.setShadeModel(ColoringAttributes.SHADE_FLAT);

    //      appear.setColoringAttributes(colorAtt);



    return appear;

  }



  BranchGroup createScene() {

    BranchGroup scene = new BranchGroup();



    scene.addChild(new Sphere(0.9f, Sphere.GENERATE_NORMALS,

        createAppearance()));



    AmbientLight lightA = new AmbientLight();

    lightA.setInfluencingBounds(new BoundingSphere());

    scene.addChild(lightA);



    DirectionalLight lightD1 = new DirectionalLight();

    lightD1.setInfluencingBounds(new BoundingSphere());

    Vector3f direction1 = new Vector3f(-1.0f, -1.0f, -0.5f);

    direction1.normalize();

    lightD1.setDirection(direction1);

    lightD1.setColor(new Color3f(0.0f, 0.0f, 1.0f));

    scene.addChild(lightD1);



    DirectionalLight lightD2 = new DirectionalLight();

    lightD2.setInfluencingBounds(new BoundingSphere());

    Vector3f direction2 = new Vector3f(1.0f, -1.0f, -0.5f);

    direction2.normalize();

    lightD2.setDirection(direction2);

    lightD2.setColor(new Color3f(1.0f, 0.0f, 0.0f));

    scene.addChild(lightD2);



    Background bg = new Background();

    bg.setColor(1.0f, 1.0f, 1.0f);

    bg.setApplicationBounds(new BoundingSphere());

    scene.addChild(bg);



    return scene;

  }



  public LitSphereApp() {

    setLayout(new BorderLayout());

    Canvas3D c = new Canvas3D(null);

    add("Center", c);



    BranchGroup scene = createScene();

    scene.compile();



    SimpleUniverse u = new SimpleUniverse(c);



    // This will move the ViewPlatform back a bit so the

    // objects in the scene can be viewed.

    u.getViewingPlatform().setNominalViewingTransform();



    u.addBranchGraph(scene);

  }



  public static void main(String argv[]) {

    new MainFrame(new LitSphereApp(), 256, 256);

  }

}
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