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/Rotate.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_Rotate_h
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#define __PCL_Rotate_h
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#include <pcl/Defs.h>
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#include <pcl/Iterator.h>
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#include <pcl/Utility.h>
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// Template formal parameters:
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//
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// FI Forward iterator
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// BI Bidirectional iterator
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// RI Random access iterator
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// UP Unary predicate
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// BP Binary predicate
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// T Item type
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// F Function
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// ### TODO: Document this file.
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namespace pcl
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{
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// ----------------------------------------------------------------------------
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// void Reverse( BI, BI )
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// ----------------------------------------------------------------------------
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template <class BI> inline
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void Reverse( BI i, BI j )
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{
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__reverse__( i, j, IteratorClass( i ) );
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}
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template <class BI> inline
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void __reverse__( BI i, BI j, BidirectionalIterator )
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{
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for ( ; i != j && i != --j; ++i )
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Swap( *i, *j );
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}
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template <class RI> inline
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void __reverse__( RI i, RI j, RandomAccessIterator )
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{
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if ( i < j )
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for ( ; i < --j; ++i )
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Swap( *i, *j );
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}
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// ----------------------------------------------------------------------------
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// void Rotate( FI, FI, FI )
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// ----------------------------------------------------------------------------
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template <class FI> inline
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void Rotate( FI i, FI m, FI j )
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{
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if ( m != i && m != j )
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__rotate__( i, m, j, IteratorClass( i ) );
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}
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template <class FI> inline
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void __rotate__( FI i, FI m, FI j, ForwardIterator )
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{
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for ( FI k = m; ; )
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{
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Swap( *i, *k );
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if ( ++i == m )
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if ( ++k == j )
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break;
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else
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m = k;
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else if ( ++k == j )
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k = m;
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}
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}
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template <class BI> inline
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void __rotate__( BI i, BI m, BI j, BidirectionalIterator )
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{
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Reverse( i, m );
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Reverse( m, j );
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Reverse( i, j );
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}
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template <class RI> inline
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void __rotate__( RI i, RI m, RI j, RandomAccessIterator )
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{
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__rotate_ri__( i, m, j, ItemType( i ) );
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}
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template <class RI, class T> inline
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void __rotate_ri__( RI i, RI m, RI j, const T* )
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{
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distance_type d = m-i;
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distance_type n = j-i;
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for ( distance_type a = d; a != 0; )
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{
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distance_type b = n % a;
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n = a;
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a = b;
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}
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if ( n < j-i )
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for ( ; 0 < n; --n )
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{
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RI x = i+n;
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RI y = x;
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RI z = y+d;
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if ( z == j )
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z = i;
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T v = *x;
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while ( z != x )
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{
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*y = *z;
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y = z;
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z = (d < j-z) ? z+d : i+(d-(j-z));
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}
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*y = v;
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}
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}
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// ----------------------------------------------------------------------------
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// void Shift( FI, FI, FI, T )
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// void ShiftLeft( FI, FI, FI, T )
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// ----------------------------------------------------------------------------
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template <class FI, class T> inline
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void Shift( FI i, FI m, FI j, const T& v )
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{
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if ( m != i )
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{
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for ( ; m != j; ++m, ++i )
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*i = *m;
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for ( ; i != j; ++i )
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*i = v;
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}
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}
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template <class FI, class T> inline
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void ShiftLeft( FI i, FI m, FI j, const T& v )
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{
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Shift( i, m, j, v );
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}
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// ----------------------------------------------------------------------------
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// void ShiftRight( FI, FI, FI, T )
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// ----------------------------------------------------------------------------
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template <class FI, class T> inline
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void ShiftRight( FI i, FI m, FI j, const T& v )
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{
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if ( i != j && m != j )
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__shift_right__( i, m, j, v, IteratorClass( i ) );
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}
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template <class FI, class T> inline
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void __shift_right__( FI i, FI m, FI j, const T& v, ForwardIterator )
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{
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do
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{
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if ( m != i )
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{
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FI k = i;
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do
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Swap( *++k, *i );
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while ( k != m );
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*m = *i;
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}
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*i = v;
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++i;
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}
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while ( ++m != j );
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}
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template <class BI, class T> inline
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void __shift_right__( BI i, BI m, BI j, const T& v, BidirectionalIterator )
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{
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while ( m != i )
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*--j = *--m;
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do
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*m = v;
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while ( ++m != j );
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}
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// ----------------------------------------------------------------------------
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} // pcl
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#endif // __PCL_Rotate_h
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// ----------------------------------------------------------------------------
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// EOF pcl/Rotate.h - Released 2022-03-12T18:59:29Z
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