[vtkusers] question ? [txt writer]

[Agata Krasoń]

Hi ;)

I am trying to make writer to txt file to format  like this :

number_of_points
number_of_triangles
point[0]X point[0]Y point[0]Z
point[1]X point[1]Y point[1]Z
...
point[N]X point[N]Y point[N]Z
triangle[0]A triangle[0]B triangle[0]C
triangle[1]A triangle[1]B triangle[1]C
...
triangle[M]A triangle[M]B triangle[M]C





I have written correctly numer of points, triangles and points ..

I have problem with writing triangle :

triangle[0]A triangle[0]B triangle[0]C



Here this is my code :

Could You look at this code please ?

I don't have any idea ?

What I could extract polys->GetCell ().. ?


#include <vtkSmartPointer.h>

#include <vtkPolyData.h>

#include <vtkDelimitedTextWriter.h>

#include <vtkPolyDataReader.h>

#include <vtkSphereSource.h>

#include <vtkVariantArray.h>

#include <vtkPolyData.h>

#include <vtkTable.h>


int main(int argc, char *argv[])

{


  // Polydata reader

  vtkPolyDataReader* reader = vtkPolyDataReader::New();

  reader->SetFileName("SimpleMesh.vtk");

  reader->Update();


  vtkPolyData*polydata = reader->GetOutput();

  vtkPoints* points = polydata->GetPoints();

  vtkCellArray* polys = polydata->GetPolys();

  polydata->SetPoints(points);

  polydata->SetPolys(polys);



  // Write to txt file

  const char* filename = "plik4.txt";


  std::fstream infile;

  infile.open(filename);



  vtkIdType number_of_points, number_of_triangles;

  number_of_points =  polydata->GetNumberOfPoints();

  infile<<number_of_points<<std::endl;


   number_of_triangles = polydata->GetNumberOfCells();

   infile<<number_of_triangles<<std::endl;


  for (vtkIdType i = 0; i < number_of_points; i++)

  {

      double p[3];


      points->GetPoint(i,p);

      infile <<p[0]<<" "<< p[1]<<" "<<p[2];

      infile<<" "<<std::endl;




  }




*// HERE ?? *

*  for (vtkIdType i = 0; i < number_of_triangles; i++)*

* *

*  {*

* *

*      vtkIdType a, b, c;*

* *

*      infile << a << b << c <<std::endl;*

* *

*
*

* *

*      double t[3];*

* *

*
*

* *

*      points->GetPoint(i,t);*

* *

*      infile <<t[0]<<" "<< t[1]<<" "<<t[2];*

* *

*      infile<<" "<<std::endl;*

* *

*
*

* *

*
*

* *

*     // polys->Ge*

* *

*     //  polys->InsertCellPoint(a-1);*

* *

*       //     polys->InsertCellPoint(b-1);*

* *

*     //  polys->InsertCellPoint(c-1);*

* *

*
*

* *

*      //      double t[3];*

* *

*      //      points->GetPoint(i,t);*

* *

*      //      infile<<t[0]<<t[1]<<t[2]<<std::endl;*

* *

*
*

* *

*  }*

* *

*
*

* *

*
*

* *

*
*


  infile.close();




  return EXIT_SUCCESS;

}



I would appreciate for any help please.


agatte
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