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How to create a Sphere E-mail
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This Java tip creates a Sphere using Sun's utility classes in Java3D.


Image

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(0.0f0.0f1.0f));
    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(1.0f0.0f0.0f));
    scene.addChild(lightD2);

    Background bg = new Background();
    bg.setColor(1.0f1.0f1.0f);
    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()256256);
  }
}

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