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