mycylinderrot.java

java 3d 系列源码

//MyCylinderRot.java
import java.applet.Applet;
import java.awt.BorderLayout;
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 MyCylinderRot extends Applet {
  public BranchGroup createSceneGraph() {
    float min=0.0f;
    float max=(float)Math.PI;
    
    BranchGroup objRoot=new BranchGroup();
    
    BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
    
    Transform3D t=new Transform3D();
    TransformGroup objTrans=new TransformGroup(t);
      objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
      objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objRoot.addChild(objTrans);
      
    Color3f bgColor=new Color3f(0.0f,0.0f,0.0f);
    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();
    Material material=new Material();
      //material.setEmissiveColor(new Color3f(1.0f,1.0f,0.0f));
      material.setDiffuseColor(new Color3f(1.0f,1.0f,0.0f));
    app.setMaterial(material);
    Cylinder cone=new Cylinder(.5f,1.0f,app);
    
    Alpha xtranAlpha=new Alpha(-1,Alpha.DECREASING_ENABLE|Alpha.INCREASING_ENABLE,
    				0,0,5000,(long)0.5,5000,5000,(long)0.5,5000);
    RotationInterpolator tran=new RotationInterpolator(xtranAlpha,objTrans,t,min,max);
      tran.setSchedulingBounds(bounds);
//    group.addChild(tran);
            
//    t=new Transform3D();
//    t.setScale(new Vector3d(0.5,1.0,2.0));
//    t.setTranslation(new Vector3f(0.8f,0.0f,0.0f));
    
    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);
    objTrans.addChild(tran);
//    objTrans.addChild(new ColorCube(0.2));
    
    objRoot.compile();
    return objRoot;
  }
  
  public MyCylinderRot() {
    setLayout(new BorderLayout());
    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    Canvas3D c=new Canvas3D(config);
    add("Center",c);
    add("Center",c);
//    Viewer viewer=new Viewer(c);
//    Vector3d viewpoint=new Vector3d(0.0,0.0,10.0);
//    Transform3D tr=new Transform3D();
//    tr.set(viewpoint);
//    ViewingPlatform v=new ViewingPlatform();
//    v.getViewPlatformTransform().setTransform(tr);
    
    BranchGroup scene=createSceneGraph();
    SimpleUniverse u=new SimpleUniverse(c);
    u.getViewingPlatform().setNominalViewingTransform();
    u.addBranchGraph(scene);
  }
  
  public static void main(String[] args) {
    new MainFrame(new MyCylinderRot(),400,300);
  }
}//end of MyCylinderRot.java