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// ____ ______ __
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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/Resample.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_Resample_h
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#define __PCL_Resample_h
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/// \file pcl/Resample.h
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#include <pcl/Defs.h>
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#include <pcl/Diagnostics.h>
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#include <pcl/GeometricTransformation.h>
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#include <pcl/ImageResolution.h>
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#include <pcl/ParallelProcess.h>
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namespace pcl
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{
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// ----------------------------------------------------------------------------
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/*!
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\namespace pcl::ResizeMode
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\brief Resizing modes for the Resample process.
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<table border="1" cellpadding="4" cellspacing="0">
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<tr><td>ResizeMode::RelativeDimensions</td> <td>Resize relative to current image dimensions</td></tr>
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<tr><td>ResizeMode::AbsolutePixels</td> <td>Resize to absolute dimensions in pixels</td></tr>
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<tr><td>ResizeMode::AbsoluteCentimeters</td> <td>Resize to absolute dimensions in centimeters</td></tr>
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<tr><td>ResizeMode::AbsoluteInches</td> <td>Resize to absolute dimensions in inches</td></tr>
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<tr><td>ResizeMode::ForceArea</td> <td>Force the total number of pixels and keep existing aspect ratio</td></tr>
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<tr><td>ResizeMode::Default</td> <td>Default resizing mode, equal to ResizeMode::RelativeDimensions</td></tr>
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</table>
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*/
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namespace ResizeMode
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{
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enum value_type
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{
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RelativeDimensions, // Resize relative to current image dimensions
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AbsolutePixels, // ... to absolute dimensions in pixels
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AbsoluteCentimeters, // ... to absolute dimensions in centimeters
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AbsoluteInches, // ... to absolute dimensions in inches
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ForceArea, // Force number of pixels, keep aspect ratio
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NumberOfResizeModes,
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Default = RelativeDimensions
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};
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}
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// ----------------------------------------------------------------------------
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/*!
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\namespace pcl::AbsoluteResizeMode
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\brief Absolute resizing modes for the Resample process.
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Absolute resize modes are applicable only when the main resize mode is
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ResizeMode::AbsolutePixels, ResizeMode::AbsoluteCentimeters or
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ResizeMode::AbsoluteInches.
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<table border="1" cellpadding="4" cellspacing="0">
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<tr><td>AbsoluteResizeMode::ForceWidthAndHeight</td> <td>Force both image dimensions</td></tr>
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<tr><td>AbsoluteResizeMode::ForceWidth</td> <td>Force width</td> preserve existing aspect ratio</td></tr>
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<tr><td>AbsoluteResizeMode::ForceHeight</td> <td>Force height</td> preserve existing aspect ratio</td></tr>
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<tr><td>AbsoluteResizeMode::Default</td> <td>Default absolute resizing mode</td> equal to AbsoluteResizeMode::ForceWidthAndHeight</td></tr>
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</table>
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*/
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namespace AbsoluteResizeMode
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{
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enum value_type
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{
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ForceWidthAndHeight, // Force both dimensions
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ForceWidth, // Force width, preserve aspect ratio
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ForceHeight, // Force height, preserve aspect ratio
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NumberOfAbsoluteResizeModes,
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Default = ForceWidthAndHeight
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};
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}
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// ----------------------------------------------------------------------------
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/*!
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* \class Resample
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* \brief %Image resampling algorithm.
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*
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* ### TODO: Write a detailed description for %Resample
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*/
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class PCL_CLASS Resample : public InterpolatingGeometricTransformation,
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public ImageResolution,
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public ParallelProcess
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{
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public:
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/*!
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* Represents a resizing mode.
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*/
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typedef ResizeMode::value_type resize_mode;
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/*!
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* Represents an absolute resizing mode.
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*/
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typedef AbsoluteResizeMode::value_type abs_resize_mode;
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/*!
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* Constructs a default %Resample object using the specified pixel
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* interpolation \a p and a single scaling ratio for both axes.
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*
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* The specified pixel interpolation object \a p must remain valid while
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* this object exists.
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*
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* The resizing mode is set relative to current image dimensions.
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*/
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Resample( PixelInterpolation& p, double scale = 1.0 )
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: InterpolatingGeometricTransformation( p )
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, m_xSize( scale )
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, m_ySize( scale )
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{
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}
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/*!
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* Constructs a default %Resample object using the specified pixel
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* interpolation \a p and separate scaling ratios for the X and Y axes,
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* \a scaleX and \a scaleY respectively.
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*
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* The specified pixel interpolation object \a p must remain valid while
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* this object exists.
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*
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* The resizing mode is set relative to current image dimensions.
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*/
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Resample( PixelInterpolation& p, double scaleX, double scaleY )
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: InterpolatingGeometricTransformation( p )
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, m_xSize( scaleX )
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, m_ySize( scaleY )
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{
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}
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/*!
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* Copy constructor.
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*/
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Resample( const Resample& ) = default;
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/*!
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* Gets the resampled image \a width and \a height.
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*
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* Use GetSizes(), XSize() and YSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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void GetSizes( double& width, double& height ) const
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{
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width = m_xSize; height = m_ySize;
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}
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/*!
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* Returns the resampled image width.
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*
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* Use GetSizes(), XSize() and YSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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double XSize() const
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{
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return m_xSize;
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}
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/*!
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* Returns the resampled image height.
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*
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* Use GetSizes(), XSize() and YSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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double YSize() const
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{
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return m_ySize;
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}
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/*!
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* Sets the resampled image \a width and \a height.
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*
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* Use SetSizes(), SetXSize() and SetYSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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void SetSizes( double width, double height )
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{
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m_xSize = width; m_ySize = height;
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}
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/*!
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* Sets the resampled image \a width.
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*
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* Use SetSizes(), SetXSize() and SetYSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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void SetXSize( double width )
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{
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m_xSize = width;
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}
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/*!
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* Sets the resampled image \a height.
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*
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* Use SetSizes(), SetXSize() and SetYSize() semantics to define a %Resample
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* instance that resizes images to fixed dimensions.
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*/
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void SetYSize( double height )
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{
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m_ySize = height;
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}
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/*!
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* Gets the scaling factors \a sx and \a sy for the X and Y axes,
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* respectively.
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*
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* Use GetScalingFactors(), XScale() and YScale() semantics to define a
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* %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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void GetScalingFactors( double& sx, double& sy ) const
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{
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GetSizes( sx, sy );
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}
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/*!
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* Returns the horizontal scaling factor.
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*
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* Use GetScalingFactors(), XScale() and YScale() semantics to define a
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* %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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double XScale() const
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{
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return XSize();
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}
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/*!
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* Returns the vertical scaling factor.
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*
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* Use GetScalingFactors(), XScale() and YScale() semantics to define a
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* %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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double YScale() const
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{
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return YSize();
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}
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/*!
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* Sets the scaling factors \a sx and \a sy for the X and Y axes,
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* respectively.
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*
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* Use SetScalingFactors(), SetXScale() and SetYScale() semantics to define
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* a %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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void SetScalingFactors( double sx, double sy )
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{
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SetSizes( sx, sy );
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}
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/*!
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* Sets the horizontal scaling factor.
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*
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* Use SetScalingFactors(), SetXScale() and SetYScale() semantics to define
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* a %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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void SetXScale( double sx )
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{
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SetXSize( sx );
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}
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/*!
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* Sets the vertical scaling factor.
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*
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* Use SetScalingFactors(), SetXScale() and SetYScale() semantics to define
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* a %Resample instance that resizes images relative to their current
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* dimensions.
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*/
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void SetYScale( double sy )
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{
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SetYSize( sy );
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}
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/*!
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* Returns the current resize mode.
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*/
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resize_mode Mode() const
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{
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return m_mode;
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}
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/*!
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* Returns true iff this %Resample object resizes images relative to their
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* current dimensions, i.e. when Mode() is equal to
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* ResizeMode::RelativeDimensions.
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*/
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bool IsRelative() const
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{
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return m_mode == ResizeMode::RelativeDimensions;
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}
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/*!
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* Returns true iff this %Resample object resizes images to fixed dimensions,
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* i.e. when Mode() is not equal to ResizeMode::RelativeDimensions.
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*/
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bool IsAbsolute() const
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{
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return !IsRelative();
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}
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/*!
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* Sets the current resize mode.
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*/
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void SetMode( resize_mode mode )
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{
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m_mode = mode;
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}
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/*!
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* Returns the current absolute resizing mode. The absolute resizing mode is
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* only applied when Mode() is not equal to ResizeMode::RelativeDimensions.
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*/
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abs_resize_mode AbsMode() const
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{
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return m_absMode;
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}
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/*!
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* Sets the absolute resizing mode. The absolute resizing mode is only
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* applied when Mode() is not equal to ResizeMode::RelativeDimensions.
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*/
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void SetAbsMode( abs_resize_mode absMode )
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{
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m_absMode = absMode;
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}
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/*!
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*/
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void GetNewSizes( int& width, int& height ) const override;
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protected:
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double m_xSize = 1.0;
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double m_ySize = 1.0;
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resize_mode m_mode = ResizeMode::Default;
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abs_resize_mode m_absMode = AbsoluteResizeMode::Default;
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// Inherited from ImageTransformation.
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void Apply( pcl::Image& ) const override;
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void Apply( pcl::DImage& ) const override;
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void Apply( pcl::UInt8Image& ) const override;
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void Apply( pcl::UInt16Image& ) const override;
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void Apply( pcl::UInt32Image& ) const override;
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};
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// ----------------------------------------------------------------------------
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} // pcl
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#endif // __PCL_Resample_h
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// ----------------------------------------------------------------------------
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// EOF pcl/Resample.h - Released 2022-03-12T18:59:29Z
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