/*
 * $RCSfile$
 *
 * Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 *
 * $Revision$
 * $Date$
 * $State$
 */

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

public class AppearanceMixed extends Applet {

    private java.net.URL bgImage;
    private java.net.URL texImage;

    private SimpleUniverse u = null;

    static class MyCanvas3D extends Canvas3D {
	private GraphicsContext3D gc;

	private static final int vertIndices[] = { 0, 1, 2, 0, 2, 3 };
	private static final int normalIndices[] = { 0, 0, 0, 1, 1, 1 };
	private IndexedTriangleArray tri =
	    new IndexedTriangleArray(4, IndexedTriangleArray.COORDINATES |
				     IndexedTriangleArray.NORMALS, 6);

	private Point3f vert[] = {
	    new Point3f(-0.12f, -0.12f, 0.0f),
	    new Point3f( 0.12f, -0.12f, 0.0f),
	    new Point3f( 0.12f,  0.12f, 0.0f),
	    new Point3f(-0.12f,  0.12f, 0.0f),
	};

	private Point3f min[] = {
	    new Point3f(-0.24f, -0.24f, -0.20f),
	    new Point3f( 0.04f, -0.28f, -0.24f),
	    new Point3f( 0.00f,  0.00f, -0.24f),
	    new Point3f(-0.32f,  0.08f, -0.20f),
	};

	private Point3f max[] = {
	    new Point3f(-0.04f, -0.04f, 0.12f),
	    new Point3f( 0.32f, -0.04f, 0.16f),
	    new Point3f( 0.36f,  0.28f, 0.20f),
	    new Point3f(-0.04f,  0.24f, 0.16f),
	};

	private Point3f delta[] = {
	    new Point3f(-0.0021f, -0.0017f,  0.0014f),
	    new Point3f( 0.0025f, -0.0013f, -0.0018f),
	    new Point3f( 0.0021f,  0.0017f,  0.0018f),
	    new Point3f(-0.0025f,  0.0013f, -0.0014f),
	};

	private Vector3f normals[];
	private Vector3f v01 = new Vector3f();
	private Vector3f v02 = new Vector3f();
	private Vector3f v03 = new Vector3f();

	public void renderField(int fieldDesc) {
	    computeVert();
	    computeNormals();
	    gc.draw(tri);
	}

	private void computeVert() {
	    for (int i = 0; i < 4; i++) {
		vert[i].add(delta[i]);
		if (vert[i].x > max[i].x) {
		    vert[i].x = max[i].x;
		    delta[i].x *= -1.0f;
		}
		if (vert[i].x < min[i].x) {
		    vert[i].x = min[i].x;
		    delta[i].x *= -1.0f;
		}
		if (vert[i].y > max[i].y) {
		    vert[i].y = max[i].y;
		    delta[i].y *= -1.0f;
		}
		if (vert[i].y < min[i].y) {
		    vert[i].y = min[i].y;
		    delta[i].y *= -1.0f;
		}
		if (vert[i].z > max[i].z) {
		    vert[i].z = max[i].z;
		    delta[i].z *= -1.0f;
		}
		if (vert[i].z < min[i].z) {
		    vert[i].z = min[i].z;
		    delta[i].z *= -1.0f;
		}
	    }
	    tri.setCoordinates(0, vert);
	}

	private void computeNormals() {
	    v01.sub(vert[1], vert[0]);
	    v02.sub(vert[2], vert[0]);
	    v03.sub(vert[3], vert[0]);
	    normals[0].cross(v01, v02);
	    normals[0].normalize();
	    normals[1].cross(v02, v03);
	    normals[1].normalize();
	    tri.setNormals(0, normals);
	}

	public MyCanvas3D(GraphicsConfiguration gcfg) {
	    super(gcfg);

	    // Allocate memory for normals
	    normals = new Vector3f[2];
	    normals[0] = new Vector3f();
	    normals[1] = new Vector3f();

	    // Set up the indices
	    tri.setCoordinateIndices(0, vertIndices);
	    tri.setNormalIndices(0, normalIndices);

	    // Set up the graphics context
	    gc = getGraphicsContext3D();

	    // Create the appearance for the triangle fan
	    Appearance app = new Appearance();
	    Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
	    Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
	    Color3f objColor = new Color3f(0.0f, 0.0f, 0.8f);
	    app.setMaterial(new Material(objColor, black, objColor,
					 white, 80.0f));
	    gc.setAppearance(app);

	    // Set up the global lights
	    Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
	    Vector3f lDir1  = new Vector3f(-1.0f, -1.0f, -1.0f);
	    Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
	    gc.addLight(new AmbientLight(alColor));
	    gc.addLight(new DirectionalLight(lColor1, lDir1));
	}
    }


    private BranchGroup createSceneGraph() {
	// Create the root of the branch graph
	BranchGroup objRoot = new BranchGroup();

	// Create a bounds for the background and lights
	BoundingSphere bounds =
	    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);

	// Set up the background
	TextureLoader bgTexture = new TextureLoader(bgImage, this);
	Background bg = new Background(bgTexture.getImage());
	bg.setApplicationBounds(bounds);
	objRoot.addChild(bg);

	// Set up the global lights
	Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
	Vector3f lDir1  = new Vector3f(-1.0f, -1.0f, -1.0f);
	Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);

	AmbientLight aLgt = new AmbientLight(alColor);
	aLgt.setInfluencingBounds(bounds);
	DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
	lgt1.setInfluencingBounds(bounds);
	objRoot.addChild(aLgt);
	objRoot.addChild(lgt1);

	// Create a bunch of objects with a behavior and add them
	// into the scene graph.

	int row, col;
	Appearance[][] app = new Appearance[3][3];

	for (row = 0; row < 3; row++)
	    for (col = 0; col < 3; col++)
		app[row][col] = createAppearance(row * 3 + col);

	for (int i = 0; i < 3; i++) {
	    double ypos = (double)(i - 1) * 0.6;
	    for (int j = 0; j < 3; j++) {
		double xpos = (double)(j - 1) * 0.6;
		objRoot.addChild(createObject(app[i][j], 0.12,  xpos, ypos));
	    }
	}

        // Let Java 3D perform optimizations on this scene graph.
        objRoot.compile();

	return objRoot;
    }


    private Appearance createAppearance(int idx) {
	Appearance app = new Appearance();

	// Globally used colors
	Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
	Color3f white = new Color3f(1.0f, 1.0f, 1.0f);

	switch (idx) {
	// Unlit solid
	case 0:
	    {
		// Set up the coloring properties
		Color3f objColor = new Color3f(1.0f, 0.2f, 0.4f);
		ColoringAttributes ca = new ColoringAttributes();
		ca.setColor(objColor);
		app.setColoringAttributes(ca);
		break;
	    }


	// Unlit wire frame
	case 1:
	    {
		// Set up the coloring properties
		Color3f objColor = new Color3f(0.5f, 0.0f, 0.2f);
		ColoringAttributes ca = new ColoringAttributes();
		ca.setColor(objColor);
		app.setColoringAttributes(ca);

		// Set up the polygon attributes
		PolygonAttributes pa = new PolygonAttributes();
		pa.setPolygonMode(pa.POLYGON_LINE);
		pa.setCullFace(pa.CULL_NONE);
		app.setPolygonAttributes(pa);
		break;
	    }

	// Unlit points
	case 2:
	    {
		// Set up the coloring properties
		Color3f objColor = new Color3f(0.2f, 0.2f, 1.0f);
		ColoringAttributes ca = new ColoringAttributes();
		ca.setColor(objColor);
		app.setColoringAttributes(ca);

		// Set up the polygon attributes
		PolygonAttributes pa = new PolygonAttributes();
		pa.setPolygonMode(pa.POLYGON_POINT);
		pa.setCullFace(pa.CULL_NONE);
		app.setPolygonAttributes(pa);

		// Set up point attributes
		PointAttributes pta = new PointAttributes();
		pta.setPointSize(5.0f);
		app.setPointAttributes(pta);
		break;
	    }

	// Lit solid
	case 3:
	    {
		// Set up the material properties
		Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
		app.setMaterial(new Material(objColor, black, objColor,
					     white, 80.0f));
		break;
	    }

	// Texture mapped, lit solid
	case 4:
	    {
		// Set up the texture map
		TextureLoader tex = new TextureLoader(texImage, this);
		app.setTexture(tex.getTexture());

 		TextureAttributes texAttr = new TextureAttributes();
 		texAttr.setTextureMode(TextureAttributes.MODULATE);
 		app.setTextureAttributes(texAttr);
 

		// Set up the material properties
		app.setMaterial(new Material(white, black, white, black, 1.0f));
		break;
	    }

	// Transparent, lit solid
	case 5:
	    {
		// Set up the transparency properties
		TransparencyAttributes ta = new TransparencyAttributes();
		ta.setTransparencyMode(ta.BLENDED);
		ta.setTransparency(0.6f);
		app.setTransparencyAttributes(ta);

		// Set up the polygon attributes
		PolygonAttributes pa = new PolygonAttributes();
		pa.setCullFace(pa.CULL_NONE);
		app.setPolygonAttributes(pa);

		// Set up the material properties
		Color3f objColor = new Color3f(0.7f, 0.8f, 1.0f);
		app.setMaterial(new Material(objColor, black, objColor,
					     black, 1.0f));
		break;
	    }

	// Lit solid, no specular
	case 6:
	    {
		// Set up the material properties
		Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
		app.setMaterial(new Material(objColor, black, objColor,
					     black, 80.0f));
		break;
	    }

	// Lit solid, specular only
	case 7:
	    {
		// Set up the material properties
		Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
		app.setMaterial(new Material(black, black, black,
					     white, 80.0f));
		break;
	    }

	// Another lit solid with a different color
	case 8:
	    {
		// Set up the material properties
		Color3f objColor = new Color3f(0.8f, 0.8f, 0.0f);
		app.setMaterial(new Material(objColor, black, objColor,
					     white, 80.0f));
		break;
	    }

	default:
	    {
		ColoringAttributes ca = new ColoringAttributes();
		ca.setColor(new Color3f(0.0f, 1.0f, 0.0f));
		app.setColoringAttributes(ca);
	    }
	}

	return app;
    }


    private Group createObject(Appearance app, double scale,
			       double xpos, double ypos) {

	// Create a transform group node to scale and position the object.
	Transform3D t = new Transform3D();
	t.set(scale, new Vector3d(xpos, ypos, 0.0));
	TransformGroup objTrans = new TransformGroup(t);

	// Create a second transform group node and initialize it to the
	// identity.  Enable the TRANSFORM_WRITE capability so that
	// our behavior code can modify it at runtime.
	TransformGroup spinTg = new TransformGroup();
	spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

	// Create a simple shape leaf node and set the appearance
	Shape3D shape = new Tetrahedron();
	shape.setAppearance(app);

	// add it to the scene graph.
	spinTg.addChild(shape);

	// Create a new Behavior object that will perform the desired
	// operation on the specified transform object and add it into
	// the scene graph.
	Transform3D yAxis = new Transform3D();
	Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
					0, 0,
					5000, 0, 0,
					0, 0, 0);

	RotationInterpolator rotator =
	    new RotationInterpolator(rotationAlpha, spinTg, yAxis,
				     0.0f, (float) Math.PI*2.0f);

	BoundingSphere bounds =
	    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);

	rotator.setSchedulingBounds(bounds);

	// Add the behavior and the transform group to the object
	objTrans.addChild(rotator);
	objTrans.addChild(spinTg);

	return objTrans;
    }


    public AppearanceMixed() {
    }

    public AppearanceMixed(java.net.URL bgurl, java.net.URL texurl) {
        bgImage = bgurl;
	texImage = texurl;
    }
    public void init() {
        if (bgImage == null) {
  	    // the path to the image for an applet
	    try {
	        bgImage = new java.net.URL(getCodeBase().toString() +
					   "../images/bg.jpg");
	    }
	    catch (java.net.MalformedURLException ex) {
	        System.out.println(ex.getMessage());
		System.exit(1);
	    }
	}

	if (texImage == null) {
	    // the path to the image for an applet
  	    try {
	        texImage = new java.net.URL(getCodeBase().toString() +
					    "../images/apimage.jpg");
	    }
	    catch (java.net.MalformedURLException ex) {
	        System.out.println(ex.getMessage());
		System.exit(1);
	    }
	}
	setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();

        MyCanvas3D c = new MyCanvas3D(config);
	add("Center", c);

	// Create a simple scene and attach it to the virtual universe
	BranchGroup scene = createSceneGraph();
	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 void destroy() {
	u.cleanup();
    }


    //
    // The following allows AppearanceMixed to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
        // the path to the image file for an application
	java.net.URL bgurl = null;
	java.net.URL texurl = null;
	try {
	    bgurl = new java.net.URL("file:../images/bg.jpg");
	    texurl = new java.net.URL("file:../images/apimage.jpg");
	}
	catch (java.net.MalformedURLException ex) {
	    System.out.println(ex.getMessage());
	    System.exit(1);
	}	
	new MainFrame(new AppearanceMixed(bgurl, texurl), 700, 700);
    }
}