Move objects(sphere) by click on buttons(right,left,top,bottom) using java3d

[mitra]

Hi guys.
I new in java3d. But I ave a job to complete. please help me.
I have a frame application, within it, have a sphere which is moved by mouse translate and have four buttons - Right, left, top and bottom.
But I can't figure it out how can I do it. Code is --

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import java.awt.GraphicsConfiguration;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.LayoutManager;
import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import java.net.URL;

import javax.swing.JFrame;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JOptionPane;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.Transform3D;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.ImageComponent2D;
import javax.media.j3d.Appearance;
import javax.media.j3d.Material;
import javax.media.j3d.ColoringAttributes;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Material;

import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;

import com.sun.j3d.utils.universe.SimpleUniverse;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.behaviors.mouse.MouseWheelZoom;

/**
*
* @author Mitajit Samanta
*/
public class backgroundImage extends JFrame implements ActionListener {

JButton right,left,top,bottom;
//Vector3f lightDir;
public backgroundImage(){

setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3d = new Canvas3D(config);
add(canvas3d,BorderLayout.CENTER);

right = new JButton("RIGHT");
left = new JButton("LEFT");
top = new JButton("TOP");
bottom = new JButton("BOTTOM");
JPanel panel = new JPanel();
panel.setLayout(new FlowLayout());
panel.add(right);
panel.add(left);
panel.add(top);
panel.add(bottom);
add(panel,BorderLayout.SOUTH);
right.addActionListener(this);
BranchGroup scene = createSceneGraph(canvas3d);
SimpleUniverse universe = new SimpleUniverse(canvas3d);
universe.getViewingPlatform().setNominalViewingTra nsform();
universe.addBranchGraph(scene);

}

public void actionPerformed(ActionEvent e){
String command = e.getActionCommand();
JOptionPane.showMessageDialog(null,command);
//String s = getAlignmentAxis(lightDir);

}

public void fetchCoordinates(){

}

public Appearance createAppearance(){
Appearance appearance = new Appearance();
//ColoringAttributes color = new ColoringAttributes();
//color.setColor(0f,0f,1.0f);
//appearance.setColoringAttributes(color);


Color3f ambientColor = new Color3f(1.0f,0.0f,0.0f);
Color3f diffuseColor = new Color3f(1.0f,0.0f,0.0f);
Color3f specularColor = new Color3f(1.0f,1.0f,1.0f);
Color3f emissiveColor = new Color3f(0.0f,0.0f,0.0f);
float shininess = 20.0f;
appearance.setMaterial(new Material(ambientColor,diffuseColor,specularColor,e missiveColor,shininess));

return appearance;
}

public BranchGroup createSceneGraph(Canvas3D canvas3d){

//Create the root of the Bramch Graph
BranchGroup objRoot = new BranchGroup();

BoundingSphere bounds = new BoundingSphere(new Point3d(),10.0);

Color3f ambientColor = new Color3f(0.2f,0.2f,0.2f);
AmbientLight ambientLight = new AmbientLight(ambientColor);
ambientLight.setInfluencingBounds(new BoundingSphere(new Point3d(),100.0));

Color3f lightColor = new Color3f(1.0f,1.0f,1.0f);
Vector3f lightDir = new Vector3f(-1.0f,-1.0f,-1.0f);
DirectionalLight light = new DirectionalLight(lightColor,lightDir);
light.setInfluencingBounds(new BoundingSphere(new Point3d(),100.0));
objRoot.addChild(ambientLight);
objRoot.addChild(light);

Transform3D tf3 = new Transform3D();
TransformGroup mainGroup = new TransformGroup(tf3);
objRoot.addChild(mainGroup);


Transform3D tf3Background = new Transform3D();
TransformGroup groupBackground = new TransformGroup(tf3Background);
mainGroup.addChild(groupBackground);
//objRoot.addChild(TGgroup);


/**
* The following 7 lines of code is for set an image as background.
*/
TextureLoader myLoader = new TextureLoader("D:\\practice\\my_practice\\src\\pra ctice_28062011\\bluelake.jpg",this);
ImageComponent2D myImage = myLoader.getImage();
BoundingSphere worldBounds = new BoundingSphere(new Point3d(),100.0);
Background back = new Background();
back.setApplicationBounds(worldBounds);
back.setImage(myImage);
groupBackground.addChild(back);



/**
* The following 7 commented line of code are for color canvas background, here color is white
*/

/*BoundingSphere worldBounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),1000.0);
Color3f color = new Color3f(1f,1f,1f);
Background back = new Background();
back.setColor(color);
back.setCapability(Background.ALLOW_COLOR_WRITE);
back.setApplicationBounds(worldBounds);
objRoot.addChild(back);*/

Transform3D tf3Sphere = new Transform3D();
//The following two lines are for set the co-ordinate of the sphere on the canvas

/*Vector3f vector1 = new Vector3f(-0.5f, -0.1f, -0.5f);
tf3Sphere.set(vector1);*/
TransformGroup groupSphere = new TransformGroup(tf3Sphere);

Sphere sphere = new Sphere(0.1f,Sphere.GENERATE_NORMALS,createAppearan ce());
groupSphere.addChild(sphere);
mainGroup.addChild(groupSphere);


mainGroup.setCapability(TransformGroup.ALLOW_TRANS FORM_WRITE);
mainGroup.setCapability(TransformGroup.ALLOW_TRANS FORM_READ);

//Setup the mouse rotation behaviour
MouseRotate mr = new MouseRotate();
mr.setTransformGroup(mainGroup);
mr.setSchedulingBounds(bounds);
mr.setFactor(0.005f);
mainGroup.addChild(mr);

//Setup the mouse translation behaviour
MouseTranslate mt = new MouseTranslate();
mt.setTransformGroup(mainGroup);
mt.setSchedulingBounds(bounds);
mt.setFactor(0.001f);
mainGroup.addChild(mt);

// set up the mouse soom behavior
MouseZoom mz = new MouseZoom();
mz.setTransformGroup(mainGroup);
mz.setSchedulingBounds(bounds);
mz.setFactor(0.001f);
mainGroup.addChild(mz);

MouseWheelZoom mwz = new MouseWheelZoom();
mwz.setTransformGroup(mainGroup);
mwz.setSchedulingBounds(bounds);
mwz.setFactor(0.001f);
mainGroup.addChild(mwz);

return objRoot;
}

public static void main(String args[]){
backgroundImage frame = new backgroundImage();
frame.setSize(new Dimension(700,700));
frame.setTitle("Practice from start");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.setVisible(true);
}

}


When click on right button the sphere(ball) should move right , when click on left button the mouse should move left side and others will doing same as their name suggests.
Please help me guys.

Thank you.

[Jodokus]

Hello,

At first some housekeeping:
- Classnames (backgroundImage) should start with a capital character
- You should use codetags and proper indentation

That said, now your problem:
- I made two more buttons (FRONT and BACK. It is Java3D, not 2D )
- Only "right" had an actionlistener. I added five more.
- I changed the ActionPerformed. (If you had trouble differentiating between the buttons, you can do that with code like

if(e.getSource()==right)JOptionPane.showMessageDialog(null,"rechts");)

but I did't use that.)
It became:

	public void actionPerformed(ActionEvent e){
		String command = e.getActionCommand();
			translate( command );//new method
	}

I made the declarations of maingroup and tf3 global. Otherwise I coudn't see them from the new translate().

Translate() became like this:

	private void translate( String direction ){
		float step = .05f;
		Transform3D myMove = new Transform3D();
		if( direction.equals("RIGHT") ){
			System.out.println( "rechts" );
			myMove.setTranslation( new Vector3f(step, 0.0f , 0.0f ) );
			tf3.mul(myMove);
			mainGroup.setTransform( tf3 );
		}
		if( direction.equals("LEFT") ){...and so on for the other buttons

Guess what? It worked!

[mitra]

Thanks a lot for ur help.
Again thanks thanks thanks, it solved my problem.

[Jodokus]

You're welcome.