[vtkusers] Ordering of Points !

[Salman Bhatti]

Hello All,


When vtk loads a  model in vtkPolyData format, it populates its POINTS list
and the index to that point list is used further  to populate  POLYGONS list
and so on .

Could you please tell me from which point of a given model, vtk starts
populating its point list.To put it other way, which point of the whole data
set becomes the first to appear in the Point list of vtkPolyData. For
example,why did vtk started to populate the POINTS list from 0.0, 0.0,
0.0in the following listing; why not some other point.



# vtk DataFile Version 2.0
Cube example
ASCII
DATASET POLYDATA
POINTS 8 float

0.0 0.0 0.0
1.0 0.0 0.0
1.0 1.0 0.0
0.0 1.0 0.0
0.0 0.0 1.0
1.0 0.0 1.0
1.0 1.0 1.0
0.0 1.0 1.0
POLYGONS 6 30
4 0 1 2 3
4 4 5 6 7
4 0 1 5 4
4 2 3 7 6
4 0 4 7 3
4 1 2 6 5

This is very important for me though it seems trivial.I would highly
appreciate your help.

Regards,
M.Salman
University of Surrey
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