[vtkusers] cloud of points into surfaces

[João Figueiredo]

hello my name is João,

i'm trying to tranform a cloud of points into a surface...
my program reads coordinates from a *.txt file.
then i´m using the delaney2d and delaney3d to transform this cloud of points 
into surface...
but unfortunately, it is not working...
could anyone help me please...maybe another Vtk classe??

my source code:

#include <stdio.h>
#include "vtkActor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkUnstructuredGrid.h"
#include "vtkFloatArray.h"
#include "vtkPoints.h"
#include "vtkPointData.h"
#include "vtkDataSetMapper.h"
#include "vtkProperty.h"
#include "vtkPolyDataMapper.h"
#include "vtkGaussianSplatter.h"
#include "vtkContourFilter.h"
#include "vtkPlaneWidget.h"
#include "vtkCellArray.h"
#include "vtkDelaunay2D.h"
#include "vtkPolyDataWriter.h"
#include "vtkShrinkFilter.h"


int main()
{
	float f1, f2, f3;
	FILE * pFile;

	pFile = fopen ("tunel_5cm.txt","r");
	rewind (pFile);

	int i=0;
	int numpontos=0;
	vtkPoints *pontos = vtkPoints::New();
	vtkCellArray *Vertices = vtkCellArray::New();

	while (fscanf (pFile, "%f,%f,%f\n", &f1, &f2, &f3)!=EOF)
	{
		/*if ((i%5)==0)
		{*/
			pontos->InsertNextPoint(f1, f2, f3);
			Vertices->InsertNextCell(1);
			Vertices->InsertCellPoint(numpontos);
			numpontos++;
		/*}
		i++;*/
	}
  	fclose (pFile);



	vtkPolyData *polydata= vtkPolyData::New();


	polydata->SetPoints(pontos);
	polydata->SetVerts(Vertices);



	//delaunay
	vtkDelaunay2D *del2D = vtkDelaunay2D::New();

	 del2D = vtkDelaunay2D::New();
	 del2D->SetInput(polydata);
	 del2D->SetTolerance(0.002);
	 del2D->BoundingTriangulationOff();
	 del2D->SetAlpha(2);
	 //del2D->Update();


	 vtkRenderer *renderer = vtkRenderer::New();
	 vtkRenderWindow *renWin = vtkRenderWindow::New();

	 renWin->AddRenderer(renderer);


	 vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
	 iren->SetRenderWindow(renWin);



	vtkDataSetMapper *mapper = vtkDataSetMapper::New();
	mapper->SetInput(del2D->GetOutput());


	vtkActor *actor= vtkActor::New();

	actor->SetMapper(mapper);

	actor->GetProperty()->SetColor(1,0,0);
	actor->GetProperty()->SetOpacity(0.9);
	actor->GetProperty()->SetAmbient(0.5);
	actor->GetProperty()->SetDiffuse(0.3);
	actor->GetProperty()->SetSpecular(0.2);



	actor->SetMapper(mapper);

	renderer->AddActor(actor);
	renderer->SetBackground(1,1,1);
	renWin->SetSize(300,300);

	iren->Initialize();


	renWin->Render();
	iren->Start();

	return 0;

}

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