This program utilizes Java 3D API to display a number of cubes on the screen. User counts the total cubes displayed and then submits his/her answer by clicking a button. The result (right or wrong) can be seen on a
label. The image displayed is rotatable.
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162 | import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.SimpleUniverse;
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.swing.*;
import javax.vecmath.*;
import java.util.*;
public class CubeCounting extends JFrame{
private BranchGroup bg=null;
private BranchGroup bg2=null;
private TransformGroup camera=null;
private Transform3D transform;
private Vector3d vector;
private JPanel p=null;
private JTextArea ta=null;
private JButton b=null;
private JLabel l=null;
private int totalcubes=0;
public static void main(String[] args){
new CubeCounting();
}
public CubeCounting(){
super("Cube Counting");
setSize(800,600);
setLayout(new BorderLayout());
GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();
Canvas3D c3d=new Canvas3D(config);
add("Center",c3d);
SimpleUniverse su=new SimpleUniverse(c3d);
su.getViewingPlatform().setNominalViewingTransform();
bg=new BranchGroup();
camera=su.getViewingPlatform().getViewPlatformTransform();
camera=new TransformGroup();
camera.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
camera.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
bg.addChild(camera);
bg2=new BranchGroup();
camera.addChild(bg2);
MouseRotate mr=new MouseRotate();
mr.setTransformGroup(camera);
mr.setSchedulingBounds(new BoundingSphere());
bg.addChild(mr);
drawCube();
su.addBranchGraph(bg);
p=new JPanel();
p.setLayout(new FlowLayout());
ta=new JTextArea();
ta.setColumns(10);
b=new JButton("Submit");
b.addActionListener(new ButtonHandler());
l=new JLabel();
p.add(ta);
p.add(b);
p.add(l);
add("South",p);
addWindowListener(new WindowAdapter()
{public void windowClosing(WindowEvent e)
{dispose(); System.exit(0);}
}
);
setVisible(true);
}
private void drawCube(){
Random rand=new Random();
int x=0;
do{
x=rand.nextInt(10);
}while(x<=5);
rand=new Random();
int y=0;
do{
y=rand.nextInt(10);
}while(y<=5);
rand=new Random();
int z=0;
do{
z=rand.nextInt(10);
}while(z<=5);
boolean current=false;
Boolean[][][] cubearray=new Boolean[z][y][x];
for(int a=0;a<z;a=a+1){
for(int b=0;b<y;b=b+1){
for(int c=0;c<x;c=c+1){
rand=new Random();
int temp=rand.nextInt(2);
if(temp==1){
current=true;
}
else{
current=false;
}
if(b==0){
cubearray[a][b][c]=current;
}
else{
if(cubearray[a][b-1][c]==true){
cubearray[a][b][c]=current;
}
else{
cubearray[a][b][c]=false;
}
}
}
}
}
for(int i=-(z/2);i<z-(z/2);i=i+1){
for(int j=-(y/2);j<y-(y/2);j=j+1){
for(int k=-(x/2);k<x-(x/2);k=k+1){
if(cubearray[i+(z/2)][j+(y/2)][k+(x/2)]==true){
TransformGroup tg=new TransformGroup();
Transform3D t3d=new Transform3D();
Vector3f v=new Vector3f((0.05f*2.1f*k),(0.05f*2.1f*j)+0.15f,(0.05f*2.1f*i));
t3d.setTranslation(v);
tg.setTransform(t3d);
Shape3D cube=new ColorCube(0.05);
tg.addChild(cube);
bg2.addChild(tg);
totalcubes++;
//System.out.println(totalcubes);
}
else{
continue;
}
}
}
}
}
class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e){
String st=ta.getText();
int result=Integer.valueOf(st).intValue();
if(result==totalcubes){
l.setText("Right");
}
else{
l.setText("Wrong");
}
}
}
}
|
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