/*
 *	@(#)GearTest.java 1.11 00/02/10 13:13:56
 *
 * Copyright (c) 1996-2000 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
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 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
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 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
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 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

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

public class GearTest extends Applet {

    static final int defaultToothCount = 24;

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

        // Create a Transformgroup to scale all objects so they
        // appear in the scene.
        TransformGroup objScale = new TransformGroup();
        Transform3D t3d = new Transform3D();
        t3d.setScale(0.4);
        objScale.setTransform(t3d);
        objRoot.addChild(objScale);

	// 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
	Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
	Background bgNode = new Background(bgColor);
	bgNode.setApplicationBounds(bounds);
	objScale.addChild(bgNode);

	// Set up the global lights
	Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
	Vector3f light1Direction  = new Vector3f(4.0f, -7.0f, -12.0f);
	Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);
	Vector3f light2Direction  = new Vector3f(-6.0f, -2.0f, -1.0f);
	Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);

	AmbientLight ambientLightNode = new AmbientLight(ambientColor);
	ambientLightNode.setInfluencingBounds(bounds);
	objScale.addChild(ambientLightNode);

	DirectionalLight light1
	    = new DirectionalLight(light1Color, light1Direction);
	light1.setInfluencingBounds(bounds);
	objScale.addChild(light1);

	DirectionalLight light2
	    = new DirectionalLight(light2Color, light2Direction);
	light2.setInfluencingBounds(bounds);
	objScale.addChild(light2);

	// Create the transform group node and initialize it to the
	// identity.  Enable the TRANSFORM_WRITE capability so that
	// our behavior code can modify it at runtime.  Add it to the
	// root of the subgraph.
	TransformGroup objTrans = new TransformGroup();
	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
	objScale.addChild(objTrans);

	// Create an Appearance.
	Appearance look = new Appearance();
	Color3f objColor = new Color3f(0.5f, 0.5f, 0.6f);
	Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
	Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
	look.setMaterial(new Material(objColor, black, objColor, white, 100.0f));

	// Create a gear, add it to the scene graph.
	//	SpurGear gear = new SpurGear(toothCount, 1.0f, 0.2f,
	SpurGear gear = new SpurGearThinBody(toothCount, 1.0f, 0.2f,
				     0.05f, 0.05f, 0.3f, 0.28f, look);
	objTrans.addChild(gear);

	// Create a new Behavior object that will rotate the object and
	// add it into the scene graph.
	Transform3D yAxis = new Transform3D();
	Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
					0, 0,
					8000, 0, 0,
					0, 0, 0);

	RotationInterpolator rotator =
	    new RotationInterpolator(rotationAlpha, objTrans, yAxis,
				     0.0f, (float) Math.PI*2.0f);
	rotator.setSchedulingBounds(bounds);
	objTrans.addChild(rotator);

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

	return objRoot;
    }

    public GearTest() {
	this(defaultToothCount);
    }

        public GearTest(int toothCount) {
	setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();

        Canvas3D c = new Canvas3D(config);
	add("Center", c);

	// Create a simple scene and attach it to the virtual universe
	BranchGroup scene = createSceneGraph(toothCount);
	SimpleUniverse 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);
    }

    //
    // The following allows GearTest to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
	int value;
	
	if (args.length > 1) {
	    System.out.println("Usage: java GearTest [#teeth]");
	    System.exit(0);
	} else if (args.length == 0) {	
	    new MainFrame(new GearTest(), 700, 700);
	} else
	    {
		try {
		    value = Integer.parseInt(args[0]);
		} catch (NumberFormatException e) {
		    System.out.println("Illegal integer specified");
		    System.out.println("Usage: java GearTest [#teeth]");
		    value = 0;
		    System.exit(0);
		}
		if (value <= 0) {
		    System.out.println("Integer must be positive (> 0)");
		    System.out.println("Usage: java GearBox [#teeth]");
		    System.exit(0);
		}
		new MainFrame(new GearTest(value), 700, 700);
	    }
    }
}
