vtkPCAAnalysisFilter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkPCAAnalysisFilter.h
 
  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.
 
=========================================================================*/
#ifndef vtkPCAAnalysisFilter_h
#define vtkPCAAnalysisFilter_h
 
#include "vtkFiltersHybridModule.h" // For export macro
#include "vtkMultiBlockDataSetAlgorithm.h"
 
class vtkFloatArray;
class vtkPointSet;
 
class VTKFILTERSHYBRID_EXPORT vtkPCAAnalysisFilter : public vtkMultiBlockDataSetAlgorithm
{
public:
  vtkTypeMacro(vtkPCAAnalysisFilter, vtkMultiBlockDataSetAlgorithm);
 
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkPCAAnalysisFilter* New();
 
 
  vtkGetObjectMacro(Evals, vtkFloatArray);
 
  void GetParameterisedShape(vtkFloatArray* b, vtkPointSet* shape);
 
  void GetShapeParameters(vtkPointSet* shape, vtkFloatArray* b, int bsize);
 
  int GetModesRequiredFor(double proportion);
 
protected:
  vtkPCAAnalysisFilter();
  ~vtkPCAAnalysisFilter() override;
 
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
private:
  vtkPCAAnalysisFilter(const vtkPCAAnalysisFilter&) = delete;
  void operator=(const vtkPCAAnalysisFilter&) = delete;
 
  // Eigenvalues
  vtkFloatArray* Evals;
 
  // Matrix where each column is an eigenvector
  double** evecMat2;
 
  // The mean shape in a vector
  double* meanshape;
};
 
#endif