simplemousenav.java

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//SimpleMouseNav.java
//演示如何使用鼠标在场景中巡游
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
import com.sun.j3d.utils.applet.MainFrame; 
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.behaviors.mouse.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import Axis;

import java.awt.event.*;
import java.util.Enumeration;

public class SimpleMouseNav extends Applet {

	public BranchGroup createSceneGraph(SimpleUniverse su) {
		BranchGroup objRoot = new BranchGroup();
		
		objRoot.addChild(new ColorCube(0.4));
		objRoot.addChild(new Axis());

		BoundingSphere bounds = new BoundingSphere(new Point3d(), 1000.0);

		TransformGroup objTG = su.getViewingPlatform().getViewPlatformTransform();

		MouseTranslate myMT = new MouseTranslate();
				//指定为一般的模式
		myMT.setTransformGroup(objTG);
		myMT.setSchedulingBounds(bounds);
		objRoot.addChild(myMT);

		MouseZoom myMZ= new MouseZoom(MouseBehavior.INVERT_INPUT);
				//指定为输入反向模式
		myMZ.setTransformGroup(objTG);
		myMZ.setSchedulingBounds(bounds);
		objRoot.addChild(myMZ);

		objRoot.compile();

		return objRoot;
	}
	public SimpleMouseNav() {
		setLayout(new BorderLayout());
		Canvas3D canvas3D = new Canvas3D(null);
		add("Center", canvas3D);
		SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
		BranchGroup scene = createSceneGraph(simpleU);
		simpleU.getViewingPlatform().setNominalViewingTransform();
		simpleU.addBranchGraph(scene);
	}
	public static void main(String[] args) {
		Frame frame = new MainFrame(new SimpleMouseNav(), 256, 256);
	}

}