//
//  CLASS
//    ExRaster	-  illustrate use of rasters
//
//  LESSON
//    Add a Raster node to place an image on the screen based upon
//    a transformed 3D coordinate
//
//  AUTHOR
//    Michael J. Bailey / San Diego Supercomputer Center
//

import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.net.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.image.*;

public class ExRaster
	extends Example
{
	//  nodes that can be updated via a menu:

	private Shape3D sh = null;			// the 3D shape
	private TextureLoader texLoader = null;		// to load the image
	private ImageComponent2D ic = null;		// the image component
	private Raster raster = null;			// the raster object


	//  Build the scene:

	public Group buildScene()
	{
		// Turn on the headlight
		setHeadlightEnable( true );

		// Build the scene root
		Group scene = new Group();


		// Create application bounds
		BoundingSphere worldBounds = new BoundingSphere(
			new Point3d( 0.0, 0.0, 0.0 ),  // Center
			1000.0 );                      // Extent


		raster = new Raster( );
			raster.setPosition( new Point3f( 1.f, 0.f, 0.f ) );
			raster.setType( Raster.RASTER_COLOR );
			raster.setOffset( 0, 0 );
			raster.setSize( 256, 256 );
			raster.setImage( ic );

		sh = new Shape3D( raster, new Appearance() );
		scene.addChild( sh );

		Appearance app0 = new Appearance( );
			Material mat0 = new Material();
			mat0.setAmbientColor( 0.8f, 0.4f, 0.2f );
			mat0.setDiffuseColor( 0.8f, 0.4f, 0.2f );
			mat0.setSpecularColor( 0.0f, 0.0f, 0.f );
			app0.setMaterial( mat0 );

		Transform3D t3d = new Transform3D( );
		t3d.setTranslation( new Vector3f( 0.f, 0.f, 0.f ) );
		TransformGroup tg0 = new TransformGroup( t3d );
		Sphere sph0 = new Sphere( 0.5f,
			Primitive.GENERATE_NORMALS, 16, app0 );
		tg0.addChild( sph0 );
		scene.addChild( tg0 );

		t3d = new Transform3D( );
		t3d.setTranslation( new Vector3f( 1.f, 0.f, 0.f ) );
		tg0 = new TransformGroup( t3d );
		sph0 = new Sphere( 0.5f,
			Primitive.GENERATE_NORMALS, 16, app0 );
		tg0.addChild( sph0 );
		scene.addChild( tg0 );

		t3d = new Transform3D( );
		t3d.setTranslation( new Vector3f( 1.f, -1.f, 0.f ) );
		tg0 = new TransformGroup( t3d );
		sph0 = new Sphere( 0.5f,
			Primitive.GENERATE_NORMALS, 16, app0 );
		tg0.addChild( sph0 );
		scene.addChild( tg0 );

		t3d = new Transform3D( );
		t3d.setTranslation( new Vector3f( 0.f, -1.f, 0.f ) );
		tg0 = new TransformGroup( t3d );
		sph0 = new Sphere( 0.5f,
			Primitive.GENERATE_NORMALS, 16, app0 );
		tg0.addChild( sph0 );
		scene.addChild( tg0 );

		return scene;
	}


	//
	//  Main (if invoked as an application)
	//
	public static void main( String[] args )
	{
		ExRaster ex = new ExRaster();
		ex.initialize( args );
		ex.buildUniverse();
		ex.showFrame();
	}


	//
	//  Initialize the GUI (application and applet)
	//
	public void initialize( String[] args )
	{
		// Initialize the window, menubar, etc.
		super.initialize( args );
		exampleFrame.setTitle( "Java 3D Raster Example" );

		// Preload the image

		texLoader = new TextureLoader( "earth.jpg", this);
		ic = texLoader.getImage();
		if( ic == null )
		{
			System.err.println( "Cannot load 'earth.jpg'" );
		}
	}


	//
	//  Handle checkboxes
	//
	public void itemStateChanged( ItemEvent event )
	{
		Object src = event.getSource();

		// Handle all other checkboxes
		super.itemStateChanged( event );
	}
}