transparencytest.java

里面 有一些java3d编程的例子

import java.awt.BorderLayout;
import java.applet.Applet;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.universe.*;
public class TransparencyTest extends Applet
{
	public BranchGroup createBranchGroup()
	{
		BranchGroup branch=new BranchGroup();
		BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
		Background bg=new Background(new Color3f(1.0f,1.0f,0.0f));
		bg.setApplicationBounds(bounds);
		branch.addChild(bg);
		DirectionalLight light=new DirectionalLight(new Color3f(1.0f,1.0f,1.0f),new Vector3f(-1.0f,-1.0f,-1.0f));
		light.setInfluencingBounds(bounds);
		branch.addChild(light);
		Appearance app1=new Appearance();
		Material material1=new Material();
		material1.setDiffuseColor(new Color3f(1.0f,0.0f,0.0f));
		app1.setMaterial(material1);
		TransparencyAttributes transparence=new TransparencyAttributes(1,0.6f);
		app1.setTransparencyAttributes(transparence);
		Appearance app2=new Appearance();
		Material material2=new Material();
		material2.setDiffuseColor(new Color3f(0.0f,1.0f,0.0f));
		app2.setMaterial(material2);
		TransformGroup trans=new TransformGroup();
		trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
		trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		branch.addChild(trans);
		MouseRotate rotate=new MouseRotate(trans);
		rotate.setSchedulingBounds(bounds);
		branch.addChild(rotate);
		MouseZoom zoom=new MouseZoom(trans);
		zoom.setSchedulingBounds(bounds);
		branch.addChild(zoom);
		MouseTranslate translate=new MouseTranslate(trans);
		translate.setSchedulingBounds(bounds);
		branch.addChild(translate);
		TransformGroup tg1=new TransformGroup();
		tg1.addChild(new Sphere(0.8f,app1));
		TransformGroup tg2=new TransformGroup();
		tg2.addChild(new Box(0.4f,0.4f,0.4f,app2));
		
		
		trans.addChild(tg1);
		trans.addChild(tg2);
		branch.compile();
		return branch;
	}
	public TransparencyTest()
	{
		this.setLayout(new BorderLayout());
		Canvas3D c=new Canvas3D(SimpleUniverse.getPreferredConfiguration());
		this.add(c,"Center");
		SimpleUniverse u=new SimpleUniverse(c);
		u.getViewingPlatform().setNominalViewingTransform();
		u.addBranchGraph(this.createBranchGroup());
	}
	public static void main(String[] args)
	{
		new MainFrame(new TransparencyTest(),400,400);
	}
}