SV: SV: [vtkusers] using GetNumberOfTriangles()

[Tron Darvann]

Sorry, there seems to have been many errors in the example, I was too quick!
It should have been like this:
 
 
// Read the surface (VTK type in this example)

vtkPolyDataReader *surfreader = vtkPolyDataReader :: New();

surf -> SetFileName(filename);

surf -> Update(); 

// Put it in a PolyData object

vtkPolyData *surf = surfreader -> GetOutput(); 

// Get the number of cells, e.g. triangles

ncells = surf-> GetNumberOfCells();

 
 
Tron Darvann
Research Engineer, PhD, 3D-Laboratory
 
Tel: (+45) 35 32 67 58 (lab) / (+45) 28 20 03 12 (mobile)
E-mail: trd at odont.ku.dk
Skype: tron.darvann
Fax: (+45) 35 32 65 05
Mailing and Visiting Address:
3D-Lab, School of Dentistry
University of Copenhagen
Nørre Alle 20
DK-2200 Copenhagen N
Denmark

________________________________

Fra: Markus voigt [mailto:markus-voigt at gmx.net]
Sendt: sø 12-11-2006 19:51
Til: Tron Darvann
Cc: vtkusers at vtk.org
Emne: Re: SV: [vtkusers] using GetNumberOfTriangles()



Hi Darvann
thanks for your help.
I used the vtkSTLReader to load the file and the vtkPolyDataMapper
Now I used your code but I got this error message:
"'GetPoints' : is not a member of 'vtkPolyDataReader'"


Tron Darvann schrieb:
>
> This code will get the number of cells.
>
> If you only have triangles, it will be the number of triangles.
>
> // Read the surface (VTK type in this example)
>
> vtkPolyDataReader *surf = vtkPolyDataReader :: New();
>
> surf -> SetFileName(filename);
>
> surf -> Update();
>
> // Put surface points in Points
>
> vtkPoints Points = Surf -> GetPoints();
>
> // Get the number of cells, e.g. triangles
>
> ncells = Points -> GetNumberOfCells();
>
> 
> 
> 
> Tron Darvann
> Research Engineer, PhD, 3D-Laboratory
> 
> _Tel:_ (+45) 35 32 67 58 (lab) / (+45) 28 20 03 12 (mobile)
> _E-mail:_ trd at odont.ku.dk <mailto:trd at odont.ku.dk>
> _Skype:_ tron.darvann
> _Fax:_ (+45) 35 32 65 05
> _Mailing and Visiting Address:_
> 3D-Lab, School of Dentistry
> University of Copenhagen
> Nørre Alle 20
> DK-2200 Copenhagen N
> Denmark
>
> ------------------------------------------------------------------------
> *Fra:* vtkusers-bounces+trd=odont.ku.dk at vtk.org på vegne af
> mam06bhv at studserv.uni-leipzig.de
> *Sendt:* lø 11-11-2006 20:58
> *Til:* vtkusers at vtk.org
> *Emne:* [vtkusers] using GetNumberOfTriangles()
>
> Hello,
> does someone know how to use the function GetNumberOfTriangles() to
> get the
> numbers of triangles for a 3D model?
> thanks
>
>
>
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--
Dipl.-Inf.(FH) Markus Voigt, BSc(Hons)
Reichpietschstraße 63
04317 Leipzig

markus-voigt at gmx.net



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