[vtkusers] help with updateCellCount

[Christos Panagiotou]

hey there


i have a problem with vtkCellArray

i am trying to implement something like the following:

cellArray->InsertNextCell(?)
cellArray->InsertCellPoint(id)

i dont know the number of points at the time i create the cell...
how can i use UpdateCellCount to do this?

is it something like:
x=1
cellArray->InsertNextCell(x)
cellArray->InsertCellPoint(id)
cellArray->UpdateCellCount(x+1)

or

for(int id=0;id<80;id++){
    cellArray->InsertNextCell(10000) // just a big number
    cellArray->InsertCellPoint(id)
}

cellArray->UpdateCellCount(79) // to reduce number of cells?


and if it is something like the above how do i close the cell? is it 
called automatically when i call InsertNextCell again?

i successfuly populate the first cell however after this, the next cells 
have 0 number of points inside
i dont get it...
i would appreciate any help
i am really stack in this 3-4 days now and i dont know what i do wrong

thanks
chris