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/GnomonicProjection.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_GnomonicProjection_h
+#define __PCL_GnomonicProjection_h
+
+/// \file pcl/GnomonicProjection.h
+
+#include <pcl/Defs.h>
+
+#include <pcl/ProjectionBase.h>
+
+/*
+ * Based on original work contributed by Andrés del Pozo.
+ */
+
+namespace pcl
+{
+
+// ----------------------------------------------------------------------------
+
+/*!
+ * \class GnomonicProjection
+ * \brief Gnomonic projection system
+ *
+ * \ingroup astrometry_support
+ */
+class PCL_CLASS GnomonicProjection : public ProjectionBase
+{
+public:
+
+   /*!
+    * Constructs a default %GnomonicProjection object with the specified
+    * origin equatorial coordinates \a ra0 and \a dec0 in degrees.
+    */
+   GnomonicProjection( double ra0, double dec0 )
+   {
+      m_ra0 = Rad( ra0 );
+      m_dec0 = Rad( dec0 );
+      SinCos( m_dec0, m_sinDec0, m_cosDec0 );
+   }
+
+   /*!
+    * Constructs a %GnomonicProjection object with the specified \a scale
+    * factor and origin equatorial coordinates \a ra0 and \a dec0 in degrees.
+    */
+   GnomonicProjection( double scale, double ra0, double dec0 )
+      : m_scale( scale )
+   {
+      m_ra0 = Rad( ra0 );
+      m_dec0 = Rad( dec0 );
+      SinCos( m_dec0, m_sinDec0, m_cosDec0 );
+   }
+
+   /*!
+    * Copy constructor.
+    */
+   GnomonicProjection( const GnomonicProjection& ) = default;
+
+   /*!
+    * Returns a dynamically allocated duplicate of this object.
+    */
+   ProjectionBase* Clone() const override
+   {
+      return new GnomonicProjection( *this );
+   }
+
+   /*!
+    * Returns the WCS projection identifier for this projection system.
+    */
+   IsoString ProjCode() const override
+   {
+      return "TAN";
+   }
+
+   /*!
+    * Returns the readable name of this projection system.
+    */
+   IsoString Name() const override
+   {
+      return "Gnomonic";
+   }
+
+   /*!
+    * Transforms from celestial coordinates to world coordinates.
+    */
+   bool Direct( DPoint& pW, const DPoint& pRD ) const noexcept override;
+
+   /*!
+    * Transforms from world coordinates to celestial coordinates.
+    */
+   bool Inverse( DPoint& pRD, const DPoint& pW ) const noexcept override;
+
+   /*!
+    *
+    */
+   bool CheckBrokenLine( const DPoint& cp1, const DPoint& cp2 ) const noexcept override
+   {
+      DPoint gp1, gp2;
+      return Direct( gp1, cp1 ) && Direct( gp2, cp2 ) &&
+            (gp1.x - gp2.x)*(gp1.x - gp2.x) + (gp1.y - gp2.y)*(gp1.y - gp2.y) < 45*45;
+   }
+
+protected:
+
+   bool Project( DPoint& pW, const DPoint& pN ) const noexcept override
+   {
+      return false;
+   }
+
+   bool Unproject( DPoint& pN, const DPoint& pW ) const noexcept override
+   {
+      return false;
+   }
+
+private:
+
+   double m_scale = Const<double>::deg();
+   double m_sinDec0;
+   double m_cosDec0;
+};
+
+// ----------------------------------------------------------------------------
+
+} // pcl
+
+#endif   // __PCL_GnomonicProjection_h
+
+// ----------------------------------------------------------------------------
+// EOF pcl/GnomonicProjection.h - Released 2022-03-12T18:59:29Z