From 6811a7f591c2c0cbc5c26f68e7d0283395cf872c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Leonardo=20Fl=C3=B3rez-Valencia?= <florez-l@javeriana.edu.co>
Date: Tue, 24 Oct 2017 16:30:55 -0500
Subject: [PATCH] ...

---
 lib/ivq/VTK/ImageToFourierSeriesFilter.cxx | 153 +++++++++++++++++++++
 lib/ivq/VTK/ImageToFourierSeriesFilter.h   |  67 +++++++++
 2 files changed, 220 insertions(+)
 create mode 100644 lib/ivq/VTK/ImageToFourierSeriesFilter.cxx
 create mode 100644 lib/ivq/VTK/ImageToFourierSeriesFilter.h

diff --git a/lib/ivq/VTK/ImageToFourierSeriesFilter.cxx b/lib/ivq/VTK/ImageToFourierSeriesFilter.cxx
new file mode 100644
index 0000000..b2ceb75
--- /dev/null
+++ b/lib/ivq/VTK/ImageToFourierSeriesFilter.cxx
@@ -0,0 +1,153 @@
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+
+#include <ivq/VTK/ImageToFourierSeriesFilter.h>
+#include <ivq/VTK/PolyDataToFourierSeriesFilter.h>
+#include <vtkImageData.h>
+#include <vtkInformation.h>
+#include <vtkInformationVector.h>
+#include <vtkMarchingSquares.h>
+#include <vtkPolyDataConnectivityFilter.h>
+#include <vtkSmartPointer.h>
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+typename ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+Self* ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+New( )
+{
+  return( new Self( ) );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+const _TFourierSeries&
+ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+GetOutput( ) const
+{
+  return( this->m_FourierSeries );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+void ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+SetNumberOfHarmonics( unsigned int q )
+{
+  if( this->m_FourierSeries.GetNumberOfHarmonics( ) != q )
+  {
+    this->m_FourierSeries.SetNumberOfHarmonics( q );
+    this->Modified( );
+
+  } // fi
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+unsigned int ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+GetNumberOfHarmonics( ) const
+{
+  return( this->m_FourierSeries.GetNumberOfHarmonics( ) );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+const double& ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+GetContourValue( ) const
+{
+  return( this->m_ContourValue );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+void ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+SetContourValue( const double& v )
+{
+  if( this->m_ContourValue != v )
+  {
+    this->m_ContourValue = v;
+    this->Modified( );
+
+  } // fi
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+ImageToFourierSeriesFilter( )
+  : vtkImageAlgorithm( ),
+    m_ContourValue( double( 0 ) )
+{
+  this->SetNumberOfInputPorts( 1 );
+  this->SetNumberOfOutputPorts( 0 );
+  this->m_FourierSeries.SetNumberOfHarmonics( 1 );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+~ImageToFourierSeriesFilter( )
+{
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+int ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+RequestData(
+  vtkInformation* information,
+  vtkInformationVector** input,
+  vtkInformationVector* output
+  )
+{
+  // Get input polydata
+  vtkInformation* inInfo = input[ 0 ]->GetInformationObject( 0 );
+  vtkImageData* image =
+    vtkImageData::SafeDownCast(
+      inInfo->Get( vtkDataObject::DATA_OBJECT( ) )
+      );
+
+  // Extract contour
+  vtkSmartPointer< vtkMarchingSquares > ms =
+    vtkSmartPointer< vtkMarchingSquares >::New( );
+  ms->SetInputData( image );
+  ms->SetValue( 0, this->m_ContourValue );
+
+  vtkSmartPointer< vtkPolyDataConnectivityFilter > conn =
+    vtkSmartPointer< vtkPolyDataConnectivityFilter >::New( );
+  conn->SetInputConnection( ms->GetOutputPort( ) );
+  conn->SetExtractionModeToClosestPointRegion( );
+  conn->SetClosestPoint( 0, 0, 0 );
+
+  // Compute fourier series
+  typedef ivq::VTK::PolyDataToFourierSeriesFilter< TFourierSeries > _TFilter;
+  vtkSmartPointer< _TFilter > filter = vtkSmartPointer< _TFilter >::New( );
+  filter->SetInputConnection( conn->GetOutputPort( ) );
+  filter->SetNumberOfHarmonics( this->m_FourierSeries.GetNumberOfHarmonics( ) );
+  filter->Update( );
+  this->m_FourierSeries = filter->GetOutput( );
+
+  return( 1 );
+}
+
+// -------------------------------------------------------------------------
+template< class _TFourierSeries >
+int ivq::VTK::ImageToFourierSeriesFilter< _TFourierSeries >::
+RequestInformation(
+  vtkInformation* information,
+  vtkInformationVector** input,
+  vtkInformationVector* output
+  )
+{
+  return( 1 );
+}
+
+// -------------------------------------------------------------------------
+#include <ivq/ITK/FourierSeries.h>
+
+template class ivq::VTK::ImageToFourierSeriesFilter< ivq::ITK::FourierSeries< float, 2 > >;
+template class ivq::VTK::ImageToFourierSeriesFilter< ivq::ITK::FourierSeries< float, 3 > >;
+template class ivq::VTK::ImageToFourierSeriesFilter< ivq::ITK::FourierSeries< double, 2 > >;
+template class ivq::VTK::ImageToFourierSeriesFilter< ivq::ITK::FourierSeries< double, 3 > >;
+
+// eof - $RCSfile$
diff --git a/lib/ivq/VTK/ImageToFourierSeriesFilter.h b/lib/ivq/VTK/ImageToFourierSeriesFilter.h
new file mode 100644
index 0000000..c18f007
--- /dev/null
+++ b/lib/ivq/VTK/ImageToFourierSeriesFilter.h
@@ -0,0 +1,67 @@
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+#ifndef __ivq__VTK__ImageToFourierSeriesFilter__h__
+#define __ivq__VTK__ImageToFourierSeriesFilter__h__
+
+#include <vtkImageAlgorithm.h>
+
+namespace ivq
+{
+  namespace VTK
+  {
+    /**
+     */
+    template< class _TFourierSeries >
+    class ImageToFourierSeriesFilter
+      : public vtkImageAlgorithm
+    {
+    public:
+      typedef ImageToFourierSeriesFilter Self;
+      typedef _TFourierSeries            TFourierSeries;
+
+    public:
+      vtkTypeMacro( ImageToFourierSeriesFilter, vtkImageAlgorithm );
+
+    public:
+      static Self* New( );
+
+      const TFourierSeries& GetOutput( ) const;
+      void SetNumberOfHarmonics( unsigned int q );
+      unsigned int GetNumberOfHarmonics( ) const;
+      const double& GetContourValue( ) const;
+      void SetContourValue( const double& v );
+
+    protected:
+      ImageToFourierSeriesFilter( );
+      virtual ~ImageToFourierSeriesFilter( );
+
+      int RequestData(
+        vtkInformation* information,
+        vtkInformationVector** input,
+        vtkInformationVector* output
+        );
+      int RequestInformation(
+        vtkInformation* information,
+        vtkInformationVector** input,
+        vtkInformationVector* output
+        );
+
+    private:
+      // Purposely not implemented
+      ImageToFourierSeriesFilter( const Self& );
+      void operator=( const Self& );
+
+    protected:
+      TFourierSeries m_FourierSeries;
+      double         m_ContourValue;
+    };
+
+  } // ecapseman
+
+} // ecapseman
+
+#endif // __ivq__VTK__ImageToFourierSeriesFilter__h__
+
+// eof - $RCSfile$
-- 
2.47.1