supermaninterp.java

使用java3d进行,obj文件的加载.和实现全方位的3维场景交互

package csu.chailei.test422;

import java.applet.Applet;
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.awt.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.image.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.vp.*;
import csu.chailei.Resources;
public class SupermanInterp extends Applet {

	/**
	 * @param args
	 */
	private SimpleUniverse universe;
	private BranchGroup scene;
	private Canvas3D canvas;
	private BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0,
			0.0), 1000.0);

	public Primitive createGeometry(int filter, java.net.URL texImage,
			Appearance appearance) {
		/**         Create Sphere and texture it        */
		TextureLoader tex = new TextureLoader(texImage,
				TextureLoader.GENERATE_MIPMAP, this);
		Texture texture = tex.getTexture();
		texture.setMinFilter(filter);
		appearance.setTexture(texture);

		TextureAttributes texAttr = new TextureAttributes();
		texAttr.setTextureMode(TextureAttributes.MODULATE);
		appearance.setTextureAttributes(texAttr);
		Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
		Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
		// Set up the material properties      
		appearance.setMaterial(new Material(white, black, white, black, 1.0f));
		Sphere sphere = new Sphere(.4f, Primitive.GENERATE_NORMALS
				| Primitive.GENERATE_TEXTURE_COORDS, appearance);
		return sphere;

	}

	public void setupView() {
		/** Add some view related things to view branch side 
		 *         of scene graph */
		// add mouse interaction to the ViewingPlatform     
		OrbitBehavior orbit = new OrbitBehavior(canvas,
				OrbitBehavior.REVERSE_ALL | OrbitBehavior.STOP_ZOOM);
		orbit.setSchedulingBounds(bounds);
		ViewingPlatform viewingPlatform = universe.getViewingPlatform();
		// This will move the ViewPlatform back a bit so the    
		// objects in the scene can be viewed.    
		viewingPlatform.setNominalViewingTransform();
		viewingPlatform.setViewPlatformBehavior(orbit);
	}

	public BranchGroup createSceneGraph() {
		// Create the root of the branch graph     
		BranchGroup objRoot = new BranchGroup();
		// Create a simple Shape3D node; add it to the scene graph. 
		// Set up the texture map      
		java.net.URL texImage = null;
		//texImage = new java.net.URL("file:../images/earth.jpg");
		texImage=Resources.getResource("/resouce\\images\\Java3d.jpg");
		Appearance app = new Appearance();
		Primitive geo = createGeometry(Texture.MULTI_LEVEL_LINEAR, texImage,
				app);
		//spinGroup will be hooked into the interpolator       
		TransformGroup spinGroup = new TransformGroup();
		spinGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		spinGroup.addChild(geo);
		// Create a new Behavior object that will perform the   
		// desired operation on the specified transform and add    
		// it into the scene graph.        
		//OLD:  straight constant spin        
		//      Alpha rotationAlpha = new Alpha(-1, 4000);      
		//NEW:  accelerate one direction, stop, rotate opposite direction       
		Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE
				| Alpha.DECREASING_ENABLE, 0, 0, 5000, 2500, 200, 5000, 2500,
				200);
		RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
				spinGroup);
		rotator.setSchedulingBounds(bounds);
		//throw in some light so we aren't stumbling       
		//around in the dark       
		Color3f lightColor = new Color3f(.5f, .5f, .5f);
		AmbientLight ambientLight = new AmbientLight(lightColor);
		ambientLight.setInfluencingBounds(bounds);
		DirectionalLight directionalLight = new DirectionalLight();
		directionalLight.setColor(lightColor);
		directionalLight.setInfluencingBounds(bounds);
		objRoot.addChild(rotator);
		//behavior gets attached at the top 
		objRoot.addChild(spinGroup);
		//TransformGroup and sphere   
		objRoot.addChild(directionalLight);
		objRoot.addChild(ambientLight);
		return objRoot;
	}
	public SupermanInterp() {    
		}   
	public void init() {    
		BranchGroup scene = createSceneGraph();
		setLayout(new BorderLayout());  
		GraphicsConfiguration config =SimpleUniverse.getPreferredConfiguration();
		canvas = new Canvas3D(config); 
		add("Center", canvas);     
		// Create a simple scene and attach it to the virtual universe 
		universe = new SimpleUniverse(canvas);     
		setupView();
		universe.addBranchGraph(scene);   
		}  
	public void destroy() {   
		universe.removeAllLocales();  
		}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MainFrame(new SupermanInterp(), 400, 400);
	}

}