[vtkusers] URGENT HELP! vtkCellArray

[Christos Panagiotou]

guys
sorry for posting this twice but i am stack and out of time!

i am confused with something probably simple and i have to submit a 
project in exactly 2 weeks time!
(the answer to the next thing finishes my project - so i really want 
some help)

could please someone tell me how can i create a vtkPolygon cell which i 
dont know the number of its points from the start?

I get one xyz point and its id per time.
is there any method that i can add THIS point with THIS id in the 
polygon and
later on i could add another one?

(i can also gather all the points in a vtkPoints object using the 
insertPoint(ID,X,Y,Z) - can i add them all in one go?)

is it the initialize() method what am i looking for? could please 
someone tell me how this works (if it is the one?)


(with the above i am creating a number of polygons (which again i dont 
know their number from the start) and i add them to a vtkCellArray, can 
someone explain to me how do i use
the UpdateCellCount() method? do i use it before the InsertNextCell or 
after?)

I am trying all the above as i want to use the 
_*vtkVoxelContoursToSurfaceFilter*_ and i looked the example that the 
web page
has, however i dont have the number of points of its polygon and the 
number of polygons from the start.... :-\

I will really really be greatful to anyone that answers my post
sorry for its length

all the best
chris