Inserting a Line in front(top ) of a imageview Problems. (x,y) issues

Question

Hi Guys, so, im making a concept of a Round-robin , i think. Its called Fila Circular in Portuguese. Anyway, the thing is, every time the user press Push, a ball(aka circle) must enter the [index] of the hexagon. But, im having issues making the path.
When i Mess the X, the Y changes. When i Mess the Y, the X changes.
Heres the Fully Code, and a picture so you can analyze , in that picture, the startX was very clsoe to 0 as startY was also.But when i moved the endX, it came down all the way.
First the link :
http://img17.imageshack.us/img17/5696/duvidajavafx.jpg
Now the Code of the two Classes :
Please help me.
package filacircular;
import java.net.MalformedURLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.effect.BlendMode;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.CubicCurve;
import javafx.scene.shape.Line;
* @author André
public class FilaCircular extends Application {
    private int vet[] = new int[5];
    private int begin;
    private int last;
    private boolean queueFull;
    public static void main(String[] args) {
        launch(args);
    @Override
    public void start(Stage primaryStage) {
        Controle c = new Controle();
        StackPane root = new StackPane();
        Scene scene = new Scene(root, 750, 750, Color.GHOSTWHITE);
        ImageView imv = null;
        GridPane gp = new GridPane();
        gp.setHgap(5);
        gp.setVgap(5);
        Button pushBeginBt = new Button("Push From Begin");
        pushBeginBt.setPrefSize(150, 25);
        Button pushEndBt = new Button("Push From End");
        pushEndBt.setPrefSize(150,25);
        Button pullBeginBt = new Button("Pull From Begin");
        pullBeginBt.setPrefSize(150, 25);
        Button pullEndBt = new Button("Pull From End");
        pullEndBt.setPrefSize(150,25);
        Label sizeLabel = new Label("Size");
        TextField textSize = new TextField("5");
        textSize.setEditable(false);
        Label beginLabel = new Label("Begin");
        TextField textBegin = new TextField("");
        textBegin.setEditable(false);
        Label lastLabel = new Label("Last Var");
        TextField textLast = new TextField("");
        textLast.setEditable(false);
        Label queueLabel = new Label("Queue");
        TextField textqueueFull = new TextField("");
        textqueueFull.setEditable(false);
        queueLabel.setPrefSize(100,10);
        try {
            imv = c.getImage();
            gp.add(imv,8,25);
            imv.toBack();
            imv.setOpacity(0.5);
        } catch (MalformedURLException ex) {
            System.out.println("\nError While Loading Image : \n");
            System.out.println(ex.getMessage() + " Finished Transmitting Error;");
        Line l4 = c.getPathTo4();
        gp.setGridLinesVisible(true);
        gp.add(l4,8,25);
        gp.toBack();
        l4.toFront();
        l4.setVisible(true);
        System.out.println("X: " + imv.getX());
        System.out.println("Y: " + imv.getY());
        gp.add(textSize,1, 13);
        gp.add(sizeLabel, 3, 13);
        gp.add(textBegin,1, 15);
        gp.add(beginLabel, 3, 15);
        gp.add(textLast,1, 17);
        gp.add(lastLabel, 3, 17);
        gp.add(textqueueFull,1, 19);
        gp.add(queueLabel, 3, 19);
        gp.add(pushBeginBt,1, 5);
        gp.add(pushEndBt,4,5);
        gp.add(pullBeginBt,1, 10);
        gp.add(pullEndBt,4,10);
        root.getChildren().add(gp);
        primaryStage.setTitle("Minha Pilha Circular");
        primaryStage.setScene(scene);
        primaryStage.show();
     public boolean enQueue(int elem)
        if(isFull()) return false;
        else{
            vet[last++] = elem;
            if(last == vet.length) last = 0;
            if(last == begin) queueFull = true;
        return true;
    public boolean isFull()
    {return queueFull;}
    private int size()
     if (last >= begin && !queueFull)return vet.length + last - begin;
     return vet.length + last - begin;
     public boolean isEmpty()
    {return (size()==0);}
    public int front()
        return vet[begin];
    public int deQueue()
    int aux = vet [begin++];
    if(begin==vet.length) begin = 0;
    queueFull = false;
    return aux;
    public int[] getVet() {
        return vet;
    public void setVet(int[] vet) {
        this.vet = vet;
    public int getBegin() {
        return begin;
    public void setBegin(int begin) {
        this.begin = begin;
    public int getLast() {
        return last;
    public void setLast(int last) {
        this.last = last;
    public boolean isQueueFull() {
        return queueFull;
    public void setQueueFull(boolean queueFull) {
        this.queueFull = queueFull;
* To change this template, choose Tools | Templates
* and open the template in the editor.
package filacircular;
import java.io.File;
import java.net.MalformedURLException;
import javafx.animation.PathTransition;
import javafx.scene.Node;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.shape.CubicCurve;
import javafx.scene.shape.CubicCurveBuilder;
import javafx.scene.shape.Line;
import javafx.scene.shape.LineBuilder;
import javafx.scene.shape.Path;
import javafx.util.Duration;
* @author André Vinícius Lopes
public class Controle {
    public ImageView getImage() throws MalformedURLException
        String path = "D://FilaCircular.jpg";
        String f = new File(path).toURI().toURL().toExternalForm();
        ImageView imv = new ImageView(f);
        return imv;
    public PathTransition getPathToStack(Node n, Path p)
        PathTransition pt = new PathTransition();
        pt.setNode(n);
        pt.setPath(p);
        pt.setDuration(Duration.millis(2000));
        return pt;
   public Line getPathTo4()
     Line l = LineBuilder.create()
             .startX(100)
             .startY(-50)
             .endX(300)
             .endY(50)
             .build();
       return l;
}Edited by: Andre Lopes on 08/09/2012 21:43

Answer 1

Thanks for the answer guys. I will try to upload the image to make it runnable.
Also, About the pref/width etc..
I dont know where i will put the balls. Anywhere its possible.
For instance, the ball could come from the 5,5 gripPane and enter the slot 0. When i try to insert another, it will go slot 1, and then when i push ( insert) another, it will go slot 2. , and then 3, and then 4. WHen i pull them, it will leave the last slot inserted.
I did not make the path yet. Im trying to make a line from outside the hexagon to inside slot[0] , so i can make the ball follow the line.
Not sure how do this : "" I find that using prefWidth and prefHeigh"" I know how to use pref wifth and pref height, but not sure what you meant.
Also, im uploading the image to run the thing :
http://imageshack.us/photo/my-images/253/filacircular.jpg/
or
http://img253.imageshack.us/img253/5770/filacircular.jpg