java3d 101 question
Dear all,
I start to learn java 3d. I am trying to put multiple thing on one graph. I have no clue why the sphere is black in color, even I have set the appearance to be blue. Please help me to read the following code and tell me what problem on the sphere part. Thanks . I hope the picture can display
[url #" style="display: block; background-image: url('http://i211.photobucket.com/albums/bb162/zmarcoz/Untitled.jpg'); [/url]
CODE
/*
* lesson01.java
*
* Created on June 14, 2007, 5:30 PM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
/*
* Main.java
*
* Created on June 14, 2007, 5:28 PM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package java3d01;
// First we import packages that I use for Java3D
import java.awt.Frame;
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
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.*;
publicclass Toolsextends Applet{// notice'lesson01', which is also the name of the file : lesson01.java
SimpleUniverse simpleU;// this is the SimpleUniverse Class that is used for Java3D
public Tools (){// this constructor is sometimes needed, even when empty as in here
}
publicvoid init(){
// this function will be called by both applications and applets
//this is usually the first function to write
setLayout(new BorderLayout());// standard Java code for BorderLayout
// Canvas3D is where all the action will be taking place, don't worry, after adding it
// to your layout, you don't have to touch it.
Canvas3D c =new Canvas3D(SimpleUniverse.getPreferredConfiguration());
// add Canvas3D to center of BorderLayout
add("Center", c);
simpleU=new SimpleUniverse(c);// setup the SimpleUniverse, attach the Canvas3D
//This is very important, the SceneGraph (where all the action takes place) is created
//by calling a function which here is called 'createSceneGraph'.
//The function is not necessary, you can put all your code here, but it is a
//standard in Java3D to create your SceneGraph contents in the function 'createSceneGraph'
BranchGroup scene = createSceneGraph();
BranchGroup scene1 = createSceneGraph1();
BranchGroup scene2 = createSceneGraph2();
//set the ViewingPlatform (where the User is) to nominal, more on this in the next lesson
simpleU.getViewingPlatform().setNominalViewingTransform();
// this will optimize your SceneGraph, not necessary, but it will allow your program to run faster.
scene.compile();
scene1.compile();
scene2.compile();
simpleU.addBranchGraph(scene);//add your SceneGraph to the SimpleUniverse
simpleU.addBranchGraph(scene1);
simpleU.addBranchGraph(scene2);
}
public BranchGroup createSceneGraph(){
//Here we will create a basic SceneGraph with a ColorCube object
BranchGroup objRoot =new BranchGroup();
TransformGroup cctg =new TransformGroup();// a TransformGroup for the ColorCube called cctg
//TransformGroup cctg1 = new TransformGroup();
ColorCube c =new ColorCube(0.1f);// create a ColorCube object
cctg.addChild(c);// add ColorCube to cctg
//Sphere sphere = new Sphere(0.2f);
//Appearance sphereAppearance = new Appearance();
//sphereAppearance.setColoringAttributes (new ColoringAttributes (new Color3f (0.0f, 0.0f, 1.0f),1));
//cctg1.addChild(sphere);
Transform3D cc3d =new Transform3D();// a Transform3D allows a TransformGroup to move
cc3d.setTranslation(new Vector3f (0.5f ,0.2f ,0.0f ));// set translation to x=0.8, y=1.0, z= -2.0
//Transform3D cc3d1 = new Transform3D(); // a Transform3D allows a TransformGroup to move
//cc3d1.setTranslation(new Vector3f (0.15f ,-0.2f ,0.5f )); // set translation to x=0.8, y=1.0, z= -2.0
cctg.setTransform(cc3d);//
//cctg1.setTransform(cc3d1);
objRoot.addChild(cctg);
//objRoot.addChild(cctg1);
return objRoot;
}
public BranchGroup createSceneGraph1(){
//Here we will create a basic SceneGraph with a ColorCube object
BranchGroup objRoot1 =new BranchGroup();
//TransformGroup cctg = new TransformGroup(); // a TransformGroup for the ColorCube called cctg
TransformGroup cctg1 =new TransformGroup();
//ColorCube c = new ColorCube(0.1f);// create a ColorCube object
//cctg.addChild(c); // add ColorCube to cctg
Sphere sphere =new Sphere(0.2f);
Appearance sphereAppearance =new Appearance();
sphereAppearance.setColoringAttributes (new ColoringAttributes (new Color3f (0.0f, 0.0f, 1.0f),1));
cctg1.addChild(sphere);
//Transform3D cc3d = new Transform3D(); // a Transform3D allows a TransformGroup to move
//cc3d.setTranslation(new Vector3f (0.5f ,0.2f ,0.0f )); // set translation to x=0.8, y=1.0, z= -2.0
Transform3D cc3d1 =new Transform3D();// a Transform3D allows a TransformGroup to move
cc3d1.setTranslation(new Vector3f (0.15f ,-0.2f ,0.5f ));// set translation to x=0.8, y=1.0, z= -2.0
//cctg.setTransform(cc3d); //
cctg1.setTransform(cc3d1);
//objRoot.addChild(cctg);
objRoot1.addChild(cctg1);
return objRoot1;
}
public BranchGroup createSceneGraph2(){
// Create the root of the branch graph
BranchGroup objRoot =new BranchGroup();
// Create the transform group node and initialize it to the
// identity. Add it to the root of the subgraph.
TransformGroup objSpin =new TransformGroup();
objSpin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objSpin);
// Create a simple shape leaf node, add it to the scene graph.
// ColorCube is a Convenience Utility class
objSpin.addChild(new ColorCube(0.4));
// create time varying function to drive the animation
Alpha rotationAlpha =new Alpha(-1, 4000);
// Create a new Behavior object that performs the desired
// operation on the specified transform object and add it into
// the scene graph.
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objSpin);
// a bounding sphere specifies a region a behavior is active
BoundingSphere bounds =new BoundingSphere();
rotator.setSchedulingBounds(bounds);
objSpin.addChild(rotator);
return objRoot;
}// end of createSceneGraph method
publicvoid destroy(){// this function will allow Java3D to clean up upon quiting
simpleU.removeAllLocales();
}
publicstaticvoid main(String[] args){
// if called as an application, a 500x500 window will be opened
Frame frame =new MainFrame(new Tools(), 700, 700);
}
}
