130 lines
5.1 KiB
C++
130 lines
5.1 KiB
C++
// ____ ______ __
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// / __ \ / ____// /
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// / /_/ // / / /
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// / ____// /___ / /___ PixInsight Class Library
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// /_/ \____//_____/ PCL 2.4.23
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// ----------------------------------------------------------------------------
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// pcl/NearestNeighborInterpolation.h - Released 2022-03-12T18:59:29Z
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// ----------------------------------------------------------------------------
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// This file is part of the PixInsight Class Library (PCL).
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// PCL is a multiplatform C++ framework for development of PixInsight modules.
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//
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// Copyright (c) 2003-2022 Pleiades Astrophoto S.L. All Rights Reserved.
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//
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// Redistribution and use in both source and binary forms, with or without
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// modification, is permitted provided that the following conditions are met:
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//
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// 1. All redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 2. All redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the names "PixInsight" and "Pleiades Astrophoto", nor the names
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// of their contributors, may be used to endorse or promote products derived
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// from this software without specific prior written permission. For written
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// permission, please contact info@pixinsight.com.
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//
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// 4. All products derived from this software, in any form whatsoever, must
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// reproduce the following acknowledgment in the end-user documentation
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// and/or other materials provided with the product:
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//
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// "This product is based on software from the PixInsight project, developed
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// by Pleiades Astrophoto and its contributors (https://pixinsight.com/)."
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//
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// Alternatively, if that is where third-party acknowledgments normally
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// appear, this acknowledgment must be reproduced in the product itself.
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//
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// THIS SOFTWARE IS PROVIDED BY PLEIADES ASTROPHOTO AND ITS CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PLEIADES ASTROPHOTO OR ITS
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, BUSINESS
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// INTERRUPTION; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; AND LOSS OF USE,
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// DATA OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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// ----------------------------------------------------------------------------
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#ifndef __PCL_NearestNeighborInterpolation_h
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#define __PCL_NearestNeighborInterpolation_h
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/// \file pcl/NearestNeighborInterpolation.h
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#include <pcl/Defs.h>
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#include <pcl/Diagnostics.h>
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#include <pcl/BidimensionalInterpolation.h>
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#include <pcl/Utility.h>
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namespace pcl
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{
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// ----------------------------------------------------------------------------
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#define m_width this->m_width
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#define m_height this->m_height
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#define m_data this->m_data
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// ----------------------------------------------------------------------------
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/*!
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* \class NearestNeighborInterpolation
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* \brief Two-dimensional nearest neighbor interpolation algorithm
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*
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* Nearest neighbor interpolation selects the value of the nearest data point
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* from the source 2-D matrix. This interpolation always returns existing data
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* values in the source matrix, since it doesn't consider the values of other
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* neighboring points.
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*
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* \sa BidimensionalInterpolation, BilinearInterpolation,
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* BicubicSplineInterpolation, BicubicBSplineInterpolation,
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* BicubicFilterInterpolation,
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*/
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template <typename T>
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class PCL_CLASS NearestNeighborInterpolation : public BidimensionalInterpolation<T>
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{
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public:
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/*!
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* Constructs a %NearestNeighborInterpolation instance.
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*/
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NearestNeighborInterpolation() = default;
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/*!
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* Copy constructor.
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*/
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NearestNeighborInterpolation( const NearestNeighborInterpolation& ) = default;
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/*!
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* Returns an interpolated value at {\a x,\a y} location.
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*
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* \param x,y Coordinates of the interpolation point (horizontal,vertical).
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*/
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double operator()( double x, double y ) const override
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{
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PCL_PRECONDITION( m_data != nullptr )
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PCL_PRECONDITION( m_width > 0 && m_height > 0 )
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return double( *(m_data + (Range( RoundIntArithmetic( y ), 0, m_height-1 )*int64( m_width ) +
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Range( RoundIntArithmetic( x ), 0, m_width-1 ))) );
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}
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};
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// ----------------------------------------------------------------------------
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#undef m_width
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#undef m_height
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#undef m_data
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// ----------------------------------------------------------------------------
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} // pcl
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#endif // __PCL_NearestNeighborInterpolation_h
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// ----------------------------------------------------------------------------
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// EOF pcl/NearestNeighborInterpolation.h - Released 2022-03-12T18:59:29Z
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