Support for XISF
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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/Rotation.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_Rotation_h
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#define __PCL_Rotation_h
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/// \file pcl/Rotation.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/ParallelProcess.h>
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namespace pcl
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{
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// ----------------------------------------------------------------------------
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/*!
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* \class Rotation
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* \brief %Image rotation algorithm.
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*
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* ### TODO: Write a detailed description for %Rotation
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*/
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class PCL_CLASS Rotation : public InterpolatingGeometricTransformation,
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public ParallelProcess
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{
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public:
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/*!
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* Constructs a new %Rotation object.
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*
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* \param p Reference to a pixel interpolation, which must remain
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* valid while this object exists.
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*
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* \param angle Rotation angle in radians
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*
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* \param cx Horizontal coordinate of the center of rotation, measured
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* in pixels in the image coordinate system.
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*
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* \param cy Vertical coordinate of the center of rotation, measured
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* in pixels in the image coordinate system.
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*/
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Rotation( PixelInterpolation& p, double angle = 0, double cx = 0, double cy = 0 )
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: InterpolatingGeometricTransformation( p )
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, m_angle( angle )
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, m_center( cx, cy )
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{
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}
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/*!
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* Constructs a new %Rotation object.
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*
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* \param p Reference to a pixel interpolation, which must remain
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* valid while this object exists.
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*
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* \param angle Rotation angle in radians
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*
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* \param center Coordinates of the center of rotation, measured in pixels
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* in the image coordinate system.
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*/
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Rotation( PixelInterpolation& p, double angle, const DPoint& center )
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: InterpolatingGeometricTransformation( p )
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, m_angle( angle )
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, m_center( center )
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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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Rotation( const Rotation& ) = default;
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/*!
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* Returns the rotation angle in radians.
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*/
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double Angle() const
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{
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return m_angle;
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}
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/*!
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* Sets the rotation angle in radians.
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*/
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void SetAngle( double rads )
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{
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m_angle = rads;
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}
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/*!
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* Returns the center of rotation. The returned point coordinates are
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* measured in pixels in the image coordinate system.
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*/
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DPoint Center() const
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{
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return m_center;
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}
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/*!
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* Returns the horizontal coordinate of the center of rotation, measured in
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* pixels in the image coordinate system.
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*/
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double CenterX() const
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{
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return m_center.x;
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}
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/*!
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* Returns the vertical coordinate of the center of rotation, measured in
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* pixels in the image coordinate system.
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*/
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double CenterY() const
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{
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return m_center.y;
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}
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/*!
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* Sets the center of rotation. The specified \a center point coordinates
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* must be expressed in pixels in the image coordinate system.
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*/
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void SetCenter( const DPoint& center )
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{
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m_center = center;
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}
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/*!
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* Sets the center of rotation to the specified coordinates \a xc and \a yc,
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* which must be expressed in pixels in the image coordinate system.
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*/
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void SetCenter( double xc, double yc )
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{
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m_center.x = xc; m_center.y = yc;
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}
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/*!
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* Returns true iff this transformation will preserve the entire target
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* image without clipping any pixels after rotating it.
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*
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* An unclipped rotation ignores the specified rotation center coordinates
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* (see CenterX() and CenterY(), as well as the class constructor) and
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* rotates images with respect to their geometric centers. To accommodate
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* all rotated pixels in the result, the unclipped rotated image will always
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* be bigger than the original, except for the trivial cases of rotations by
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* 0 and 180 degrees.
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*/
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bool IsUnclipped() const
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{
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return m_unclipped;
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}
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/*!
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* Enables unclipped rotations for this object. See IsUnclipped() for
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* information on unclipped rotations.
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*/
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void EnableUnclippedRotation( bool enable = true )
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{
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m_unclipped = enable;
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}
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/*!
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* Disables unclipped rotations for this object. See IsUnclipped() for
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* information on unclipped rotations.
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*/
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void DisableUnclippedRotation( bool disable = true )
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{
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EnableUnclippedRotation( !disable );
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}
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/*!
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* Returns the current vector of per-channel filling values for uncovered
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* image regions.
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*
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* See the documentation for SetFillValues() for more information.
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*/
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const DVector& FillValues() const
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{
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return m_fillValues;
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}
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/*!
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* Sets a vector of per-channel filling values for uncovered image regions.
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*
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* Uncovered regions result when an image is rotated by non-orthogonal
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* angles.
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*
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* By default, there are no filling values defined (and hence the returned
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* vector is empty by default). When the %Rotation instance is executed and
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* a filling value is not defined for a channel of the target image,
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* uncovered regions are filled with the minimum sample value in the native
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* range of the image (usually zero).
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*/
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void SetFillValues( const DVector& fillValues )
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{
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m_fillValues = fillValues;
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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_angle = 0; // radians
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bool m_unclipped = false;
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DPoint m_center = DPoint( 0 );
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DVector m_fillValues;
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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_Rotation_h
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// ----------------------------------------------------------------------------
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// EOF pcl/Rotation.h - Released 2022-03-12T18:59:29Z
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