mycone.java

java 3d 系列源码

//MyCone.java
import java.applet.Applet;//可以插入html
import java.awt.BorderLayout;//窗口采用BorderLayout方式布局
import com.sun.j3d.utils.applet.MainFrame;//application
import com.sun.j3d.utils.geometry.Cone;//调用生成Cone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.*;
import java.awt.GraphicsConfiguration;
public class MyCone extends Applet {
  public BranchGroup createSceneGraph() {
    BranchGroup objRoot=new BranchGroup();//BranchGroup的一个对象objRoot（放置背景、灯光）
   // TransformGroup objTrans=new TransformGroup();//坐标系
   //objRoot.addChild(objTrans);
    
    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.f,-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);
//    Cone cone=new Cone(.5f,1.0f,Primitive.GENERATE_NORMALS_INWARD,app);
    Cone cone = new Cone(.5f,1.0f,app);
        
    TransformGroup objTrans=new TransformGroup();
      objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
      objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objRoot.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(cone);
    //objRoot.addChild(cone);
    
    //objRoot.compile();
    return objRoot;
  }
  
  public MyCone() {
    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 MyCone(),300,300);
  }
}//end of MyCone.java