myshare.java

java 3d 系列源码

//MyShared.java
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.*;
import java.awt.GraphicsConfiguration;

public class MyShare 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(0.0f,0.0f,0.0f);
    Background bg=new Background(bgColor);
    bg.setApplicationBounds(bounds);
    objRoot.addChild(bg);
    
    TransformGroup trans=new TransformGroup();
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objRoot.addChild(trans);
    
    trans.addChild(total());
    
    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);

    objRoot.compile();
    return objRoot;
  }
  
  public Group total() {
    Group gro=new Group();
    Point3f point1[]=new Point3f[3];
    point1[0]=new Point3f(0.0f,0.5f,0.0f);
    point1[1]=new Point3f(-0.4f,-.5f,0.0f);
    point1[2]=new Point3f(0.4f,-.5f,0.0f);
    
    Point3f point2[]=new Point3f[3];
    point2[0]=new Point3f(-0.2f,0.0f,0.0f);
    point2[1]=new Point3f(0.0f,-0.5f,0.0f);
    point2[2]=new Point3f(0.2f,0.0f,0.0f);
      
    Color3f color1[]=new Color3f[3];
    for (int i=0;i<3;i++) 
    	color1[i]=new Color3f(1.0f,0.0f,0.0f);
    
    Color3f color2[]=new Color3f[3];
    for (int i=0;i<3;i++) 
    	color2[i]=new Color3f(1.0f,1.0f,0.0f);
    
    TriangleArray plane1=new TriangleArray(3,TriangleArray.COORDINATES|TriangleArray.COLOR_3);
    plane1.setCoordinates(0,point1);
    plane1.setColors(0,color1);
    
    TriangleArray plane2=new TriangleArray(3,TriangleArray.COORDINATES|TriangleArray.COLOR_3);
    plane2.setCoordinates(0,point2);
    plane2.setColors(0,color2);
    
    Shape3D planeShape1=new Shape3D();
    Shape3D planeShape2=new Shape3D();
    
    planeShape1.setGeometry(plane1);
    planeShape2.setGeometry(plane2);
    
    DecalGroup obj=new DecalGroup();
    obj.addChild(planeShape1);
    obj.addChild(planeShape2);
    
    SharedGroup shared=new SharedGroup();
    shared.addChild(obj);
    
    Transform3D t1=new Transform3D();
    t1.setTranslation(new Vector3f(-0.1f,0.0f,0.0f));
    TransformGroup g1=new TransformGroup(t1);
    g1.addChild(new Link(shared));
    
    Transform3D t2=new Transform3D();
    t2.setTranslation(new Vector3f(-0.2f,0.0f,-0.1f));
    TransformGroup g2=new TransformGroup(t2);
    g2.addChild(new Link(shared));
    
    Transform3D t3=new Transform3D();
    t3.setTranslation(new Vector3f(0.0f,0.0f,0.1f));
    TransformGroup g3=new TransformGroup(t3);
    g3.addChild(new Link(shared));
    
    gro.addChild(g1);
    gro.addChild(g2);
    gro.addChild(g3);
    
    return gro;
 }
 
 public MyShare() {
    setLayout(new BorderLayout());
    GraphicsConfiguration config = 
               SimpleUniverse.getPreferredConfiguration();
    Canvas3D c=new Canvas3D(config);
    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 MyShare(),400,300);
  }
}//end of MyShare.java