mybox.java

java开发的源程序例子它包括有基本的java语言练习是我亲自写出来的保证没有问题

//MyBox.java
import java.applet.Applet;					//可以作为Applet插入到html
import java.awt.BorderLayout;				//调用布局管理器
import com.sun.j3d.utils.applet.MainFrame;	//能够生成独立运行的窗口
import com.sun.j3d.utils.geometry.Box;		//调用生成Box的Utility
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.universe.*;		//观测位置的设置
import javax.media.j3d.*;					//核心类
import javax.vecmath.*;						//矢量计算
import com.sun.j3d.utils.behaviors.mouse.*;

public class MyBox extends Applet {
  public BranchGroup createSceneGraph() {
    BranchGroup objRoot=new BranchGroup();
    
    BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);//有效范围
    
    Color3f bgColor=new Color3f(0.0f,0.0f,0.0f);
    		//背景颜色
    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,0.0f,-1.0f);
    DirectionalLight directionalLight=new DirectionalLight(directionalColor,vec);
    directionalLight.setInfluencingBounds(bounds);
    objRoot.addChild(directionalLight);
    
    Appearance app=new Appearance();
    		//外观材质
    Material material=new Material();
    		//圆锥颜色
    //material.setEmissiveColor(new Color3f(1.0f,1.0f,0.0f));
  	material.setDiffuseColor(new Color3f(1.0f,1.0f,0.0f));
      		//辐射光效果
    app.setMaterial(material);
	Box box=new Box(.2f,.5f,0.4f,app);
	
	//旋转
	TransformGroup xRot=new TransformGroup();
    Transform3D x = new Transform3D();
    xRot.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    xRot.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

    x.rotX(Math.PI/6);
    xRot.setTransform(x);
    objRoot.addChild(xRot);
    
    TransformGroup objTrans=new TransformGroup();
    Transform3D y = new Transform3D();
    y.rotY(Math.PI/4);
    objTrans.setTransform(y);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
  	xRot.addChild(objTrans);  
    
    MouseRotate behavior = new MouseRotate();
	behavior.setTransformGroup(objTrans);
    objRoot.addChild(behavior);
    behavior.setSchedulingBounds(bounds);

    MouseZoom behavior2 = new MouseZoom();
    behavior2.setTransformGroup(objTrans);
    objRoot.addChild(behavior2);
    behavior2.setSchedulingBounds(bounds);

    MouseTranslate behavior3 = new MouseTranslate();
    behavior3.setTransformGroup(objTrans);
    objRoot.addChild(behavior3);
    behavior3.setSchedulingBounds(bounds);
       
    objTrans.addChild(box);
    
    //objRoot.compile();
    return objRoot;
  }
  
  public MyBox() 
  {
    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 MyBox(),300,300);
  }
}