mypoint.java

关于java3D学习的示例程序

import java.applet.Applet;
import java.awt.BorderLayout;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class MyPoint extends Applet{
	public BranchGroup createSceneGraph(){
		BranchGroup objRoot=new BranchGroup();
		BoundingSphere bounds=new BoundingSphere(
			new Point3d(0.0,0.0,0.0),100.0);
		Color3f bgColor=new Color3f(1.0f,1.0f,1.0f);
		Background bg=new Background(bgColor);
		bg.setApplicationBounds(bounds);
		objRoot.addChild(bg);
		float vert[]={.5f,0.5f,0.0f,-0.5f,0.5f,0.0f,
		              0.3f,0.0f,0.0f,-0.3f,0.0f,0.0f,
		              -0.5f,-0.5f,0.0f,0.5f,-0.5f,0.0f,};
		float color[]={0.0f,0.5f,0.0f,0.0f,0.5f,0.0f,
		               0.0f,0.3f,2.0f,0.0f,0.0f,0.3f,
		               0.0f,0.0f,0.3f,0.3f,0.3f,0.0f,};
		Shape3D shape=new Shape3D();
		PointArray point=new PointArray(6,PointArray.COORDINATES|PointArray.COLOR_3);
		point.setCoordinates(0,vert);
		point.setColors(0,color);
		PointAttributes pa=new PointAttributes();//PointAttributes管理点如何被渲染
		pa.setPointSize(10.0f);
		pa.setPointAntialiasingEnable(true);
		Appearance app=new Appearance();
		app.setPointAttributes(pa);
		shape.setGeometry(point);
		shape.setAppearance(app);
		objRoot.addChild(shape);
		objRoot.compile();
		return objRoot;
	}
	public MyPoint(){
		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 MyPoint(),400,400);
	}
}/////////////6个点