Shape path iterator

Question

I have searched the forum to no avail, and have only found one tutorial that gets remotely close to what I am trying to do (i.e. http://www.developer.com/java/other/article.php/626101)
Here's the jest:
I've got a circle that has a linecoming out of it. Each line connects to the end point of the previous one, so if you will, think of this as one big connected path made of up lines of variable size.
Currently my circle class extends Ellipse2D.Double and houses a global LinkedList that houses the lines. Everything works perfect, BUT NOW I need to figure out some way to have the circle move along this proverbial connected line. Here's what I have attempted in much simplified form:
ListIterator lineIterator = currentCharacter.lineList.listIterator();
while (lineIterator.hasNext())
  StraightLine currentLine = (StraightLine)lineIterator.next();
  // here it draws the line on the screen
  generalPath.append(currentLine, true);
}I won't even both including my feable attempt at getting it to work with a PathIterator other than the following statement which instantiates the iterator:
PathIterator path = generalPath.getPathIterator(null);Can someone please point me in the right direction. I would like for the circle to move position by position in the current segment before moving on to the next, AND not just move segment to segment. I'm having a real hard time understanding the PathIterator interface, so if anyone could give me a few pointers, I'd be much obliged.

Answer 1

Here is an updated code sample for those who are helping. Unfortunatly, this sample gets the wrong locations it seems for the x and y iteration points:
               while (it.hasNext())
                        StraightLine currentLine = (StraightLine)it.next();
                        // Gets the line's coordinates
                        int x1 = (int)currentLine.x1;
                        int x2 = (int)currentLine.x2;
                        int y1 = (int)currentLine.y1;
                        int y2 = (int)currentLine.y2;                                  
                        // Temp storage variables
                        int x = 0;
                        int y = 0;
                        // Calculates the slope
                        int numerator = (y2-y1);
                        int denominator = (x2-x1);
                        int slope = 0;
                        if (denominator != 0)
                            slope = ((y2-y1)/(x2-x1));
                        // Calculates the y-intercept
                        int b = y2 - (slope*x2);
                        Vector xCords = new Vector();
                        Vector yCords = new Vector();
                        // Gets the Y coordinates
                        if (x1 > x2)
                            for (int i=x1; i > x2; i--)
                                y = (slope * i) + b;
                                yCords.addElement(new Integer(y));
                        else if (x1 < x2)
                            for (int i=x1; i < x2; i++)
                                y = (slope * i) + b;
                                yCords.addElement(new Integer(y));                           
                        else
                            y = (slope) + b;
                            yCords.addElement(new Integer(y));
                        // Gets the X coordinates
                        if (y1 > y2)
                            for (int i=y1; i > y2; i--)
                                x = (slope * i) + b;
                                xCords.addElement(new Integer(x));
                        else if (y1 < y2)
                            for (int i=y1; i < y2; i++)
                                x = (slope * i) + b;
                                xCords.addElement(new Integer(x));                               
                        else
                            x = (slope) + b;
                            xCords.addElement(new Integer(x));
                        for (int i=0; (i < xCords.size()) && (i < yCords.size()); i++)
                            System.out.println(xCords.elementAt(i) + " " + yCords.elementAt(i));
                            selectedCharacter.x = Integer.parseInt(xCords.elementAt(i).toString());
                            selectedCharacter.y = Integer.parseInt(yCords.elementAt(i).toString());
                    }