vrmlloader.java

vrml和java3d的完美结合 大家可以尝试把wrl文件导入Java三维环境。 尽情的去作自己的毕业设计吧！

import com.sun.j3d.loaders.*;
import java.awt.GraphicsConfiguration;
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import java.io.*;
import javax.imageio.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.loaders.vrml97.VrmlLoader;
import com.sun.j3d.loaders.vrml97.*;

public class vrmlLoader extends Applet {
  public BranchGroup createSceneGraph(String filename) {
    // Create the root of the branch graph
    BranchGroup sceneRoot = new BranchGroup();

    // Create a bounds for the background and lights
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 500.0);
    // Set up the background Color
    Color3f bgColor = new Color3f(0.1f, 0.2f, 0.3f);
    Background bg = new Background(bgColor);
    bg.setApplicationBounds(bounds);
    sceneRoot.addChild(bg);

    // Set up the global lights First, define the color of the lights
    Color3f light1Color = new Color3f(0.0f, 1.0f,1.0f);
    Vector3f light1Direction  = new Vector3f(4.0f, -7.0f, -12.0f);
    Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);
    Vector3f light2Direction  = new Vector3f(-6.0f, -2.0f, -1.0f);
    Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);

    // Second, define the ambient light, and insert it in the branch
    AmbientLight ambientLight = new AmbientLight(ambientColor);
    ambientLight.setInfluencingBounds(bounds);
    sceneRoot.addChild(ambientLight);

    // Lastly, define the directional lights and insert it
    DirectionalLight light1= new DirectionalLight(light1Color, light1Direction);
    light1.setInfluencingBounds(bounds);
    sceneRoot.addChild(light1);

    DirectionalLight light2= new DirectionalLight(light2Color, light2Direction);
    light2.setInfluencingBounds(bounds);
    sceneRoot.addChild(light2);

    TransformGroup sceneTG = new TransformGroup();
    sceneTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    sceneRoot.addChild(sceneTG);

   
    TransformGroup objTG = new TransformGroup();
    Transform3D objTrans = new Transform3D();
    objTG.getTransform(objTrans);
    objTrans.setScale( 0.2 );
    objTG.setTransform(objTrans);
    sceneTG.addChild(objTG);

    
    VrmlLoader l=new  VrmlLoader();
    Scene s = null;
    try {
      s = l.load(filename);
    }
    catch (FileNotFoundException e) {
	System.err.println(e);
	System.exit(1);
    }
    catch (ParsingErrorException e) {
	System.err.println(e);
	System.exit(1);
    }
    catch (IncorrectFormatException e) {
	System.err.println(e);
	System.exit(1);
    }

    //sceneTG.addChild(f);
    objTG.addChild(s.getSceneGroup());

    return sceneRoot;
  }

  public vrmlLoader(String filename) {
    filename="b.wrl";

    setLayout(new BorderLayout());
    GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();
    Canvas3D c=new Canvas3D(config);
    add("Center",c);
 
 
    Viewer viewer=new Viewer(c);
   Vector3d viewpoint=new Vector3d(.0,.0,3.0);
   Transform3D t=new Transform3D();
   t.set(viewpoint);
   ViewingPlatform v=new ViewingPlatform();
   v.getViewPlatformTransform().setTransform(t);
  


    // Create a simple scene and attach it to the virtual universe
    BranchGroup scene = createSceneGraph(filename);
    SimpleUniverse u = new SimpleUniverse(c);
    u.getViewingPlatform().setNominalViewingTransform();
    u.addBranchGraph(scene);
  }


  public static void main(String[] args) {
      new MainFrame(new vrmlLoader(null), 800,600);
  }
}