// Java 3D Test Applet
// MaterialTest.java
//   Copyright (c) 1999 ENDO Yasuyuki
//                      mailto:yasuyuki@javaopen.org
//                      http://www.javaopen.org/j3dbook/index.html

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

public class MaterialTest extends Applet {
  private Material material = new Material();

  private Scrollbar scrollbar = new Scrollbar(Scrollbar.HORIZONTAL, 1, 1, 1, 129);
  private TextField textField = new TextField("1.0");


  public MaterialTest() {
    this.setLayout(new BorderLayout());

    Panel panel = new Panel();
    panel.setLayout(new BorderLayout());
    this.add(panel, BorderLayout.SOUTH);
    
    scrollbar.addAdjustmentListener( new AdjustmentListener() {
      public void adjustmentValueChanged(AdjustmentEvent e) {
        float value = (float)e.getValue();
        material.setShininess(value);
        textField.setText( Float.toString(value) );
      }
    });
    panel.add(scrollbar, BorderLayout.CENTER);

    textField.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        float value = 1.0f;
        try {
          value = Float.parseFloat(e.getActionCommand());
          if (value < 1.0f) value = 1.0f;
          if (value > 128.0f) value = 128.0f;
          material.setShininess(value);
          scrollbar.setValue( (int)value );
	  System.out.println("value=" + value);
        } catch (NumberFormatException ex) {}
      }
    });
    panel.add(textField, BorderLayout.WEST);
    
    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    Canvas3D canvas = new Canvas3D(config);
    add(canvas, BorderLayout.CENTER);
    
    SimpleUniverse universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();
    
    BranchGroup scene = createSceneGraph();
    universe.addBranchGraph(scene);
  }
  
  private BranchGroup createSceneGraph() {
    BranchGroup root = new BranchGroup();
    
    DirectionalLight light =
      new DirectionalLight( new Color3f(1.0f, 1.0f, 1.0f),
                            new Vector3f(-0.5f, -0.5f, -0.7f) );
    BoundingSphere bounds = new BoundingSphere(new Point3d(), 100.0);
    light.setInfluencingBounds(bounds);
    root.addChild(light);

    material.setCapability(Material.ALLOW_COMPONENT_WRITE);
    material.setDiffuseColor( new Color3f(0.0f, 0.0f, 0.8f) );
    material.setShininess(1.0f);
    Appearance ap = new Appearance();
    ap.setMaterial(material);

    Sphere sphere = new Sphere(0.6f, ap);
    root.addChild(sphere);
    
    return root;
  }

  public static void main(String[] args) {
    MaterialTest applet = new MaterialTest();
    Frame frame = new MainFrame(applet, 500, 500);
  }
}