NearestNeighborInterpolation.h

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//     ____   ______ __
//    / __ \ / ____// /
//   / /_/ // /    / /
//  / ____// /___ / /___   PixInsight Class Library
// /_/     \____//_____/   PCL 2.7.0
// ----------------------------------------------------------------------------
// pcl/NearestNeighborInterpolation.h - Released 2024-06-18T15:48:54Z
// ----------------------------------------------------------------------------
// This file is part of the PixInsight Class Library (PCL).
// PCL is a multiplatform C++ framework for development of PixInsight modules.
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// ----------------------------------------------------------------------------
 
#ifndef __PCL_NearestNeighborInterpolation_h
#define __PCL_NearestNeighborInterpolation_h
 
 
#include <pcl/Defs.h>
#include <pcl/Diagnostics.h>
 
#include <pcl/BidimensionalInterpolation.h>
#include <pcl/Utility.h>
 
namespace pcl
{
 
// ----------------------------------------------------------------------------
 
#define m_width  this->m_width
#define m_height this->m_height
#define m_data      this->m_data
 
// ----------------------------------------------------------------------------
 
template <typename T>
class PCL_CLASS NearestNeighborInterpolation : public BidimensionalInterpolation<T>
{
public:
 
   NearestNeighborInterpolation() = default;
 
   NearestNeighborInterpolation( const NearestNeighborInterpolation& ) = default;
 
   double operator()( double x, double y ) const override
   {
      PCL_PRECONDITION( m_data != nullptr )
      PCL_PRECONDITION( m_width > 0 && m_height > 0 )
      return double( *(m_data + (Range( RoundIntArithmetic( y ), 0, m_height-1 )*int64( m_width ) +
                                 Range( RoundIntArithmetic( x ), 0, m_width-1 ))) );
   }
};
 
// ----------------------------------------------------------------------------
 
#undef m_width
#undef m_height
#undef m_data
 
// ----------------------------------------------------------------------------
 
} // pcl
 
#endif   // __PCL_NearestNeighborInterpolation_h
 
// ----------------------------------------------------------------------------
// EOF pcl/NearestNeighborInterpolation.h - Released 2024-06-18T15:48:54Z