Support for XISF

2022-04-12 08:17:18 +02:00
parent e5cd25cc77
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+//     ____   ______ __
+//    / __ \ / ____// /
+//   / /_/ // /    / /
+//  / ____// /___ / /___   PixInsight Class Library
+// /_/     \____//_____/   PCL 2.4.23
+// ----------------------------------------------------------------------------
+// pcl/BilinearInterpolation.h - Released 2022-03-12T18:59:29Z
+// ----------------------------------------------------------------------------
+// This file is part of the PixInsight Class Library (PCL).
+// PCL is a multiplatform C++ framework for development of PixInsight modules.
+//
+// Copyright (c) 2003-2022 Pleiades Astrophoto S.L. All Rights Reserved.
+//
+// Redistribution and use in both source and binary forms, with or without
+// modification, is permitted provided that the following conditions are met:
+//
+// 1. All redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//
+// 2. All redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//
+// 3. Neither the names "PixInsight" and "Pleiades Astrophoto", nor the names
+//    of their contributors, may be used to endorse or promote products derived
+//    from this software without specific prior written permission. For written
+//    permission, please contact info@pixinsight.com.
+//
+// 4. All products derived from this software, in any form whatsoever, must
+//    reproduce the following acknowledgment in the end-user documentation
+//    and/or other materials provided with the product:
+//
+//    "This product is based on software from the PixInsight project, developed
+//    by Pleiades Astrophoto and its contributors (https://pixinsight.com/)."
+//
+//    Alternatively, if that is where third-party acknowledgments normally
+//    appear, this acknowledgment must be reproduced in the product itself.
+//
+// THIS SOFTWARE IS PROVIDED BY PLEIADES ASTROPHOTO AND ITS CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PLEIADES ASTROPHOTO OR ITS
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, BUSINESS
+// INTERRUPTION; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; AND LOSS OF USE,
+// DATA OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+// ----------------------------------------------------------------------------
+
+#ifndef __PCL_BilinearInterpolation_h
+#define __PCL_BilinearInterpolation_h
+
+/// \file pcl/BilinearInterpolation.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_fillBorder this->m_fillBorder
+#define m_fillValue  this->m_fillValue
+#define m_data       this->m_data
+
+// ----------------------------------------------------------------------------
+
+/*!
+ * \class BilinearInterpolation
+ * \brief Bilinear interpolation algorithm.
+ *
+ * The bilinear interpolation algorithm interpolates from the nearest four
+ * mapped source data items. It builds and evaluates two linear interpolation
+ * polynomials, one for each plane direction.
+ *
+ * \sa NearestNeighborInterpolation, BicubicSplineInterpolation,
+ * BicubicBSplineInterpolation, BicubicFilterInterpolation,
+ */
+template <typename T>
+class PCL_CLASS BilinearInterpolation : public BidimensionalInterpolation<T>
+{
+public:
+
+   /*!
+    * Constructs a %BilinearInterpolation instance.
+    */
+   BilinearInterpolation() = default;
+
+   /*!
+    * Copy constructor.
+    */
+   BilinearInterpolation( const BilinearInterpolation& ) = default;
+
+   /*!
+    * Virtual destructor.
+    */
+   virtual ~BilinearInterpolation()
+   {
+   }
+
+   /*!
+    * Returns an interpolated value at {\a x,\a y} location.
+    *
+    * \param x,y  Coordinates of the interpolation point (horizontal,vertical).
+    */
+   double operator()( double x, double y ) const override
+   {
+      PCL_PRECONDITION( m_data != nullptr )
+      PCL_PRECONDITION( m_width > 0 && m_height > 0 )
+
+      int j0 = pcl::Range( TruncInt( x ), 0, m_width-1 );
+      int i0 = pcl::Range( TruncInt( y ), 0, m_height-1 );
+
+      int j1 = j0 + 1;
+      int i1 = i0 + 1;
+
+      double p00, p10, p01, p11;
+      const T* fp = m_data + (int64( i0 )*m_width + j0);
+
+      p00 = *fp;
+      p10 = (j1 < m_width) ? fp[1] : (m_fillBorder ? m_fillValue : *fp);
+
+      if ( i1 < m_height )
+         fp += m_width;
+      else if ( m_fillBorder )
+      {
+         p01 = p11 = m_fillValue;
+         goto __1;
+      }
+
+      p01 = *fp;
+      p11 = (j1 < m_width) ? fp[1] : (m_fillBorder ? m_fillValue : *fp);
+
+__1:
+      double dx = x - j0, dx1 = 1 - dx;
+      double dy = y - i0, dy1 = 1 - dy;
+      return p00*dx1*dy1 + p10*dx*dy1 + p01*dx1*dy + p11*dx*dy;
+   }
+};
+
+// ----------------------------------------------------------------------------
+
+#undef m_width
+#undef m_height
+#undef m_fillBorder
+#undef m_fillValue
+#undef m_data
+
+// ----------------------------------------------------------------------------
+
+} // pcl
+
+#endif   // __PCL_BilinearInterpolation_h
+
+// ----------------------------------------------------------------------------
+// EOF pcl/BilinearInterpolation.h - Released 2022-03-12T18:59:29Z