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/*=========================================================================
Program: Visualization Toolkit
Module: vtkSimplePointsReader.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkSimplePointsReader.h"
#include "vtkCellArray.h"
#include "vtkObjectFactory.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkSmartPointer.h"
vtkStandardNewMacro(vtkSimplePointsReader);
//----------------------------------------------------------------------------
vtkSimplePointsReader::vtkSimplePointsReader()
{
this->FileName = 0;
this->SetNumberOfInputPorts(0);
}
//----------------------------------------------------------------------------
vtkSimplePointsReader::~vtkSimplePointsReader()
{
this->SetFileName(0);
}
//----------------------------------------------------------------------------
void vtkSimplePointsReader::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "FileName: "
<< (this->FileName ? this->FileName : "(none)") << "\n";
}
//----------------------------------------------------------------------------
int vtkSimplePointsReader::RequestData(vtkInformation*,
vtkInformationVector**,
vtkInformationVector* outputVector)
{
// Make sure we have a file to read.
if(!this->FileName)
{
vtkErrorMacro("A FileName must be specified.");
return 0;
}
// Open the input file.
ifstream fin(this->FileName);
if(!fin)
{
vtkErrorMacro("Error opening file " << this->FileName);
return 0;
}
// Allocate objects to hold points and vertex cells.
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
vtkSmartPointer<vtkCellArray> verts = vtkSmartPointer<vtkCellArray>::New();
// Read points from the file.
vtkDebugMacro("Reading points from file " << this->FileName);
double x[3];
while(fin >> x[0] >> x[1] >> x[2])
{
vtkIdType id = points->InsertNextPoint(x);
verts->InsertNextCell(1, &id);
}
vtkDebugMacro("Read " << points->GetNumberOfPoints() << " points.");
// Store the points and cells in the output data object.
vtkPolyData* output = vtkPolyData::GetData(outputVector);
output->SetPoints(points);
output->SetVerts(verts);
return 1;
}
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