/usr/include/OTB-6.4/otbGeographicalDistance.txx is in libotb-dev 6.4.0+dfsg-1.
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 84 85 86 87 88 89 90 91 92 93 94 95 | /*
* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef otbGeographicalDistance_txx
#define otbGeographicalDistance_txx
#include "otbGeographicalDistance.h"
#include "otbMath.h"
namespace otb
{
template <class TVector>
GeographicalDistance<TVector>
::GeographicalDistance() : m_EarthRadius(6371000)
{}
template <class TVector>
double
GeographicalDistance<TVector>
::Evaluate(const VectorType & x) const
{
// First check if vector length is sufficient
if(x.Size()<2)
itkExceptionMacro(<<"Vector length must be at least 2 to compute geographical distance.");
// Call evaluate implementation with the first point being the
// origin
VectorType origin(x);
origin[0]=this->GetOrigin()[0];
origin[1]=this->GetOrigin()[1];
return this->Evaluate(origin, x);
}
template <class TVector>
double
GeographicalDistance<TVector>
::Evaluate(const VectorType & x, const VectorType & y) const
{
// First check if vector length is sufficient
if(x.Size()<2 || y.Size()<2)
itkExceptionMacro(<<"Vector length must be at least 2 to compute geographical distance.");
// Build some const variables
const double One = itk::NumericTraits<double>::One;
const double Two = One + One;
const double Deg2Rad = CONST_PI/180.;
// Compute latitude and longitude differences
double dLat = (vcl_fabs(x[1] - y[1])) * Deg2Rad;
double dLon = (vcl_fabs(x[0] - y[0])) * Deg2Rad;
// Compute dx in meters
double a = vcl_sin(dLat / Two) * vcl_sin(dLat / Two) + vcl_cos(y[1] * Deg2Rad) * vcl_cos(
x[1] * Deg2Rad) * vcl_sin(dLon / Two) * vcl_sin(dLon / Two);
double c = Two * vcl_atan2(vcl_sqrt(a), vcl_sqrt(One - a));
double d = m_EarthRadius * c;
// Return result
return d;
}
template <class TVector>
void
GeographicalDistance<TVector>
::PrintSelf(std::ostream & os, itk::Indent indent) const
{
// Call superclass implementation
Superclass::PrintSelf(os, indent);
// Earth radius
os<<indent<<"Earth radius: "<<m_EarthRadius<<std::endl;
}
} // End namespace otb
#endif
|