myswitch.java

关于java3D学习的示例程序

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.*;
public class MySwitch extends Applet{
	public Switch s;
	public BranchGroup createSceneGraph(){
		BranchGroup objRoot=new BranchGroup();
		Transform3D t0=new Transform3D();
		t0.rotX(0.3f);
		TransformGroup objTrans=new TransformGroup(t0);
		objRoot.addChild(objTrans);
		BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
		Appearance app=new Appearance();
		Material mat=new Material();
		mat.setDiffuseColor(new Color3f(1.0f,1.0f,0.0f));
		app.setMaterial(mat);
		Color3f bgColor=new Color3f(0.0f,0.0f,0.0f);
		Background bg=new Background(bgColor);
		bg.setApplicationBounds(bounds);
		objRoot.addChild(bg);
		Color3f DirectionalColor=new Color3f(1.f,1.f,1.f);
		Vector3f vec=new Vector3f(0.f,0.f,-1.0f);
		DirectionalLight directionalLight=new DirectionalLight(DirectionalColor,vec);
		directionalLight.setInfluencingBounds(bounds);
		objRoot.addChild(directionalLight);
		s=new Switch();
		s.setWhichChild(Switch.CHILD_ALL);
		s.setCapability(Switch.ALLOW_SWITCH_WRITE);
		Transform3D t1=new Transform3D();
		t1.setTranslation(new Vector3f(0.0f,0.3f,0.0f));
		TransformGroup gsphere=new TransformGroup(t1);
		gsphere.addChild(new Sphere(0.2f,app));
		Transform3D t2=new Transform3D();
		t2.setTranslation(new Vector3f(0.0f,0.0f,0.0f));
		TransformGroup gcone=new TransformGroup(t2);
		gcone.addChild(new Cone(0.3f,0.6f,1,app));
		TransformGroup trans=new TransformGroup();
		trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
		objRoot.addChild(trans);
		s.addChild(gsphere);
		s.addChild(gcone);
		MouseRotate behavior=new MouseRotate();
		behavior.setTransformGroup(trans);
		objRoot.addChild(behavior);
		behavior.setSchedulingBounds(bounds);
		MouseZoom behavior2=new MouseZoom();
		behavior2.setTransformGroup(trans);
		objRoot.addChild(behavior2);
		behavior2.setSchedulingBounds(bounds);
		MouseTranslate behavior3=new MouseTranslate();
		behavior3.setTransformGroup(trans);
		objRoot.addChild(behavior3);
		behavior3.setSchedulingBounds(bounds);
		trans.addChild(s);
		switchBehavior b=new switchBehavior(s);
		b.setSchedulingBounds(bounds);
		objRoot.addChild(b);
		objRoot.compile();
		return objRoot;
	}
	public MySwitch(){
		setLayout(new BorderLayout());
		Canvas3D c=new Canvas3D(null);
		add("Center",c);
		BranchGroup scene=createSceneGraph();
		SimpleUniverse u=new SimpleUniverse(c);
		u.getViewingPlatform().setNominalViewingTransform();
		u.addBranchGraph(scene);
	}
	public static void main(String[] args){
		new MainFrame(new MySwitch(),200,200);
	}
}