[Insight-developers] Modified FloodFill iterator (remember regions)

[David Doria]

I am modifying the flood fill iterator such that a second iteration of the
iterator using a different seed will return a mutually exclusive region
(rather than growing into a region that has already been assigned an id, for
example). The m_TemporaryPointer already stores exactly the information
needed to do this, but most of the filters that use a flood fill iterator
create a new instance of the iterator each time they are run, causing this
information to be lost. Does anyone have any thoughts on if it makes more
sense to:

1) store a pointer to the temporary image in the *Filter class and pass it
to the iterator's constructor, indicating "use this temporary image to start
with"
or
2) store the iterator instance in the *Filter class so that a new instance
is not created each time the filter is run. The iterator is then responsible
for saving the temporary image

Any comments?

Thanks,

David
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