/usr/include/OTB-5.8/otbPolygonCompacityFunctor.h is in libotb-dev 5.8.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | /*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef otbPolygonCompacityFunctor_h
#define otbPolygonCompacityFunctor_h
#include "otbMath.h"
namespace otb
{
/** \class PolygonCompacityFunctor
* \brief Select polygons according to their compacity
*
* This functor compute the compacity of a polygon
* and return true is the distance is above the threshold, false otherwise.
*
* The compacity is defined as:
*
* \f$ 4\pi \frac{A}{L^2}\f$
*
* where \f$ A \f$ is the area (obtained by the method GetArea() )
* and \f$ L \f$ the perimeter (obtained by the method GetLength() ).
*
* \ingroup Functor
*
* \ingroup OTBVectorDataManipulation
*/
template <class TInput1>
class PolygonCompacityFunctor
{
public:
void SetThreshold(double threshold)
{
m_Threshold = threshold;
}
double GetThreshold(void) const
{
return m_Threshold;
}
PolygonCompacityFunctor()
{
m_Threshold = 0.2;
}
~PolygonCompacityFunctor() {}
inline bool operator ()(const TInput1& input)
{
double circularityRatio = 4*CONST_PI*input->GetArea()
/ vnl_math_sqr(input->GetLength());
if (circularityRatio > m_Threshold)
{
return true;
}
else
{
return false;
}
}
private:
double m_Threshold;
};
}
#endif
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