Resample.h

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//     ____   ______ __
//    / __ \ / ____// /
//   / /_/ // /    / /
//  / ____// /___ / /___   PixInsight Class Library
// /_/     \____//_____/   PCL 2.7.0
// ----------------------------------------------------------------------------
// pcl/Resample.h - Released 2024-06-18T15:48:54Z
// ----------------------------------------------------------------------------
// This file is part of the PixInsight Class Library (PCL).
// PCL is a multiplatform C++ framework for development of PixInsight modules.
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// ----------------------------------------------------------------------------
 
#ifndef __PCL_Resample_h
#define __PCL_Resample_h
 
 
#include <pcl/Defs.h>
#include <pcl/Diagnostics.h>
 
#include <pcl/GeometricTransformation.h>
#include <pcl/ImageResolution.h>
#include <pcl/ParallelProcess.h>
 
namespace pcl
{
 
// ----------------------------------------------------------------------------
 
namespace ResizeMode
{
   enum value_type
   {
      RelativeDimensions,  // Resize relative to current image dimensions
      AbsolutePixels,      // ... to absolute dimensions in pixels
      AbsoluteCentimeters, // ... to absolute dimensions in centimeters
      AbsoluteInches,      // ... to absolute dimensions in inches
      ForceArea,           // Force number of pixels, keep aspect ratio
      NumberOfResizeModes,
      Default = RelativeDimensions
   };
}
 
// ----------------------------------------------------------------------------
 
namespace AbsoluteResizeMode
{
   enum value_type
   {
      ForceWidthAndHeight, // Force both dimensions
      ForceWidth,          // Force width, preserve aspect ratio
      ForceHeight,         // Force height, preserve aspect ratio
      NumberOfAbsoluteResizeModes,
      Default = ForceWidthAndHeight
   };
}
 
// ----------------------------------------------------------------------------
 
class PCL_CLASS Resample : public InterpolatingGeometricTransformation,
                           public ImageResolution,
                           public ParallelProcess
{
public:
 
   using resize_mode = ResizeMode::value_type;
 
   using abs_resize_mode = AbsoluteResizeMode::value_type;
 
   Resample( PixelInterpolation& p, double scale = 1.0 )
      : InterpolatingGeometricTransformation( p )
      , m_xSize( scale )
      , m_ySize( scale )
   {
   }
 
   Resample( PixelInterpolation& p, double scaleX, double scaleY )
      : InterpolatingGeometricTransformation( p )
      , m_xSize( scaleX )
      , m_ySize( scaleY )
   {
   }
 
   Resample( const Resample& ) = default;
 
   void GetSizes( double& width, double& height ) const
   {
      width = m_xSize; height = m_ySize;
   }
 
   double XSize() const
   {
      return m_xSize;
   }
 
   double YSize() const
   {
      return m_ySize;
   }
 
   void SetSizes( double width, double height )
   {
      m_xSize = width; m_ySize = height;
   }
 
   void SetXSize( double width )
   {
      m_xSize = width;
   }
 
   void SetYSize( double height )
   {
      m_ySize = height;
   }
 
   void GetScalingFactors( double& sx, double& sy ) const
   {
      GetSizes( sx, sy );
   }
 
   double XScale() const
   {
      return XSize();
   }
 
   double YScale() const
   {
      return YSize();
   }
 
   void SetScalingFactors( double sx, double sy )
   {
      SetSizes( sx, sy );
   }
 
   void SetXScale( double sx )
   {
      SetXSize( sx );
   }
 
   void SetYScale( double sy )
   {
      SetYSize( sy );
   }
 
   resize_mode Mode() const
   {
      return m_mode;
   }
 
   bool IsRelative() const
   {
      return m_mode == ResizeMode::RelativeDimensions;
   }
 
   bool IsAbsolute() const
   {
      return !IsRelative();
   }
 
   void SetMode( resize_mode mode )
   {
      m_mode = mode;
   }
 
   abs_resize_mode AbsMode() const
   {
      return m_absMode;
   }
 
   void SetAbsMode( abs_resize_mode absMode )
   {
      m_absMode = absMode;
   }
 
   void GetNewSizes( int& width, int& height ) const override;
 
   bool SupportsGammaCorrection() const override
   {
      return true;
   }
 
protected:
 
   double          m_xSize = 1.0;
   double          m_ySize = 1.0;
   resize_mode     m_mode = ResizeMode::Default;
   abs_resize_mode m_absMode = AbsoluteResizeMode::Default;
 
   // Inherited from ImageTransformation.
   void Apply( pcl::Image& ) const override;
   void Apply( pcl::DImage& ) const override;
   void Apply( pcl::UInt8Image& ) const override;
   void Apply( pcl::UInt16Image& ) const override;
   void Apply( pcl::UInt32Image& ) const override;
};
 
// ----------------------------------------------------------------------------
 
} // pcl
 
#endif   // __PCL_Resample_h
 
// ----------------------------------------------------------------------------
// EOF pcl/Resample.h - Released 2024-06-18T15:48:54Z