/* Auteur: Nicolas JANEY         */
/* nicolas.janey@univ-fcomte.fr  */
/* Novembre 2001                 */

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;

public class SimpleAWTJava3D extends Applet implements ActionListener {

  private TextField tfr = new TextField("0.5",5);
  private TextField tfv = new TextField("0.6",5);
  private TextField tfb = new TextField("0.7",5);
  private Material m ;

  public BranchGroup createSceneGraph(SimpleUniverse u) {
    BranchGroup objRoot = new BranchGroup();
    BoundingSphere bounds;
    bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
    Vector3f ldir = new Vector3f(1.0F,1.0F,-1.0F);
    Color3f lcouldl = new Color3f(1.0F,1.0F,1.0F);
    DirectionalLight dl = new DirectionalLight(lcouldl,ldir);
    dl.setInfluencingBounds(bounds);
    objRoot.addChild(dl);
    Appearance a = new Appearance();
    m = new Material();
    m.setCapability(Material.ALLOW_COMPONENT_WRITE);
    float r = new Float(tfr.getText()).floatValue();
    float v = new Float(tfv.getText()).floatValue();
    float b = new Float(tfb.getText()).floatValue();
    m.setDiffuseColor(r,v,b);    
    a.setMaterial(m);
    objRoot.addChild(new Sphere(0.5F,1,100,a));
    objRoot.compile();
    return objRoot;
    }

  public SimpleAWTJava3D() {
    setLayout(new BorderLayout());
    GraphicsConfiguration config;
    config = SimpleUniverse.getPreferredConfiguration();
    Canvas3D c = new Canvas3D(config);
    Container ct = new Container();
    ct.setLayout(new FlowLayout());
    tfr = new TextField("0.5",5);
    tfr.addActionListener(this);
    tfv = new TextField("0.6",5);
    tfv.addActionListener(this);
    tfb = new TextField("0.7",5);
    tfb.addActionListener(this);
    add("Center",c);
    ct.add(tfr);
    ct.add(tfv);
    ct.add(tfb);
    add("South",ct);
    SimpleUniverse u = new SimpleUniverse(c);
    BranchGroup scene = createSceneGraph(u);
    u.getViewingPlatform().setNominalViewingTransform();
    u.addBranchGraph(scene);
    }

    public void actionPerformed(ActionEvent e) {
      if ( ( e.getSource() == tfr ) ||
           ( e.getSource() == tfv ) ||
           ( e.getSource() == tfb ) ) {
        float r = new Float(tfr.getText()).floatValue();
        float v = new Float(tfv.getText()).floatValue();
        float b = new Float(tfb.getText()).floatValue();
        m.setDiffuseColor(r,v,b);}
    }

  public static void main(String[] args) {
    new MainFrame(new SimpleAWTJava3D(),300,250);
    }
  }