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116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
// -*- c++ -*-
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTableFFT.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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/*-------------------------------------------------------------------------
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Copyright 2009 Sandia Corporation.
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Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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the U.S. Government retains certain rights in this software.
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-------------------------------------------------------------------------*/
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#include "vtkTableFFT.h"
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#include "vtkDataArray.h"
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#include "vtkImageData.h"
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#include "vtkImageFFT.h"
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#include "vtkObjectFactory.h"
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#include "vtkPointData.h"
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#include "vtkTable.h"
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#include "vtkSmartPointer.h"
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#define VTK_CREATE(type, name) \
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vtkSmartPointer<type> name = vtkSmartPointer<type>::New()
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#include <string.h>
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#include <vtksys/SystemTools.hxx>
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using namespace vtksys;
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//=============================================================================
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vtkStandardNewMacro(vtkTableFFT);
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//-----------------------------------------------------------------------------
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vtkTableFFT::vtkTableFFT()
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{
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}
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vtkTableFFT::~vtkTableFFT()
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{
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}
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void vtkTableFFT::PrintSelf(ostream &os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os, indent);
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}
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//-----------------------------------------------------------------------------
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int vtkTableFFT::RequestData(vtkInformation *vtkNotUsed(request),
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vtkInformationVector **inputVector,
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vtkInformationVector *outputVector)
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{
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vtkTable *input = vtkTable::GetData(inputVector[0]);
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vtkTable *output = vtkTable::GetData(outputVector);
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if (!input || !output)
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{
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vtkWarningMacro(<< "No input or output.");
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return 0;
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}
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vtkIdType numColumns = input->GetNumberOfColumns();
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for (vtkIdType col = 0; col < numColumns; col++)
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{
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this->UpdateProgress((double)col/numColumns);
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vtkDataArray *array = vtkDataArray::SafeDownCast(input->GetColumn(col));
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if (!array) continue;
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if (array->GetNumberOfComponents() != 1) continue;
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if (array->GetName())
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{
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if (SystemTools::Strucmp(array->GetName(),"time") == 0) continue;
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if (strcmp(array->GetName(), "vtkValidPointMask") == 0)
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{
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output->AddColumn(array);
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continue;
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}
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}
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if (array->IsA("vtkIdTypeArray")) continue;
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vtkSmartPointer<vtkDataArray> frequencies = this->DoFFT(array);
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frequencies->SetName(array->GetName());
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output->AddColumn(frequencies);
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}
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return 1;
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}
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//-----------------------------------------------------------------------------
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vtkSmartPointer<vtkDataArray> vtkTableFFT::DoFFT(vtkDataArray *input)
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{
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// Build an image data containing the input data.
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VTK_CREATE(vtkImageData, imgInput);
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imgInput->SetDimensions(input->GetNumberOfTuples(), 1, 1);
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imgInput->SetScalarType(input->GetDataType(), input->GetInformation());
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imgInput->GetPointData()->SetScalars(input);
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// Compute the FFT
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VTK_CREATE(vtkImageFFT, fft);
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fft->SetInputData(imgInput);
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fft->Update();
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// Return the result
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return vtkSmartPointer<vtkDataArray>(fft->GetOutput()->GetPointData()->GetScalars());
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}
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