// Java 3D Test Applet
// SwitchValueInterpolatorTest.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 java.util.*;
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.Primitive;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.behaviors.picking.*;

public class SwitchValueInterpolatorTest extends Applet {
  private Canvas3D canvas = null;
  private AlphaPanel apanel = null;
  private SwitchValueInterpolator sinterp = null;

  private boolean isStandalone = false;

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

    apanel = new AlphaPanel();
    this.add(apanel, BorderLayout.NORTH);
    
    Panel spanel = new Panel();
    this.add(spanel, BorderLayout.SOUTH);
    
    final Button sbutton = new Button("Stop");
    sbutton.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        String blabel = sbutton.getLabel();
        if (blabel.equals("Start")) {
          sinterp.setEnable(true);
	  apanel.reset();
          sbutton.setLabel("Stop");
        } else if (blabel.equals("Stop")) {
          sinterp.setEnable(false);
          sbutton.setLabel("Start");
        }
      }
    });
    spanel.add(sbutton);
    
    spanel.add( new Label("FirstChildIndex") );
    TextField ffield = new TextField("0");
    ffield.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        int i = 0;
        try {
          i = Integer.parseInt(e.getActionCommand());
          if (i < 0) i = 0;
          sinterp.setFirstChildIndex(i);
        } catch (NumberFormatException ex) {}
      }
    });
    spanel.add(ffield);
    
    spanel.add( new Label("LastChildIndex") );
    TextField lfield = new TextField("5");
    lfield.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        int i = 0;
        try {
          i = Integer.parseInt(e.getActionCommand());
          if (i < 0) i = 0;
          sinterp.setLastChildIndex(i);
        } catch (NumberFormatException ex) {}
      }
    });
    spanel.add(lfield);

    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    canvas = new Canvas3D(config);
    this.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();
    
    BoundingSphere bounds = new BoundingSphere( new Point3d(), 100.0 );
    
    DirectionalLight light =
      new DirectionalLight( new Color3f(1.0f, 1.0f, 1.0f),
                            new Vector3f(-0.57f, -0.57f, -0.57f) );
    light.setInfluencingBounds(bounds);
    root.addChild(light);
    
    AmbientLight alight = new AmbientLight();
    alight.setInfluencingBounds(bounds);
    root.addChild(alight);
    
    PickRotateBehavior rotator =
      new PickRotateBehavior(root, canvas, bounds, PickObject.USE_GEOMETRY);
    root.addChild(rotator);
    
    PickTranslateBehavior translator =
      new PickTranslateBehavior(root, canvas, bounds, PickObject.USE_GEOMETRY);
    root.addChild(translator);
    
    PickZoomBehavior zoomer =
      new PickZoomBehavior(root, canvas, bounds, PickObject.USE_GEOMETRY);
    root.addChild(zoomer);
    
    Transform3D t3d = new Transform3D();
    TransformGroup trans = new TransformGroup(t3d);
    root.addChild(trans);
    
    Switch switchGroup = new Switch();
    switchGroup.setCapability(Switch.ALLOW_SWITCH_READ);
    switchGroup.setCapability(Switch.ALLOW_SWITCH_WRITE);
    trans.addChild(switchGroup);
    
    switchGroup.addChild( createBox( 0.1f,
                                 new Vector3d(-0.8, 0.0, 0.0),
                                 new Color3f(1.0f, 0.0f, 0.0f) ) ); // red
    
    switchGroup.addChild( createBox( 0.1f,
                                 new Vector3d(-0.4, 0.0, 0.0),
                                 new Color3f(1.0f, 0.5f, 0.0f) ) ); // orange
    
    switchGroup.addChild( createBox( 0.1f,
                                 new Vector3d(0.0, 0.0, 0.0),
                                 new Color3f(1.0f, 1.0f, 0.0f) ) ); // yellow
    
    switchGroup.addChild( createBox( 0.1f,
                                 new Vector3d(0.4, 0.0, 0.0),
                                 new Color3f(0.5f, 1.0f, 0.0f) ) ); // yellow green
    
    switchGroup.addChild( createBox( 0.1f,
                                 new Vector3d(0.8, 0.0, 0.0),
                                 new Color3f(0.0f, 1.0f, 0.5f) ) ); // blue green
    
    sinterp =
      new SwitchValueInterpolator( apanel.getAlpha(), switchGroup, 0, 5 );
    sinterp.setSchedulingBounds(bounds);
    root.addChild(sinterp);
    
    return root;
  }
  
  private TransformGroup createBox(float size, Vector3d pos, Color3f color) {
    Transform3D t3d = new Transform3D();
    t3d.set(pos);
    TransformGroup trans = new TransformGroup(t3d);
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    trans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
    Appearance ap = new Appearance();
    Material mat = new Material();
    mat.setDiffuseColor(color);
    mat.setShininess(100.0f);
    ap.setMaterial(mat);
    Box box =
      new Box( size, size, size,
               Primitive.GENERATE_NORMALS |
	       Primitive.ENABLE_GEOMETRY_PICKING,
               ap );
    trans.addChild(box);
    return trans;
  }
  
  public static void main(String[] args) {
    SwitchValueInterpolatorTest applet = new SwitchValueInterpolatorTest();
    Frame frame = new MainFrame(applet, 500, 500);
  }
}