I would advise you to contact the author of this article on this page:
Queue-Linear Flood Fill: A Fast Flood Fill Algorithm[
^]. At the end of the article text, use "New Message". The author will receive a e-mail notification and will get a chance to answer you.
I must add that the question is not 100% clear. Do your really need a list, not any other way to specify the set of points? Do you realize that this list can be way too long to keep all those points? I guess the basic answer will be: modify the algorithm (I would rather do it by myself using the original source code), but your requirement to have a list is hardly reasonable. I suggest you think about it before you ask your question.
—SA