File: otbGeographicalDistance.cxx

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/*
 * 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.
 */

#include "itkPoint.h"
#include "otbGeographicalDistance.h"

int otbGeographicalDistanceNew(int itkNotUsed(argc), char * itkNotUsed(argv)[])
{
  typedef itk::Point<double, 2> PointType;
  typedef otb::GeographicalDistance<PointType> DistanceType;

  // Instantiation
  DistanceType::Pointer distance = DistanceType::New();

  return EXIT_SUCCESS;
}

int otbGeographicalDistance(int itkNotUsed(argc), char * argv[])
{
  typedef itk::Point<double, 2> PointType;
  typedef otb::GeographicalDistance<PointType> GeoDistanceType;

  GeoDistanceType::Pointer geoDistance = GeoDistanceType::New();

  PointType a, b;
  a[0] = atof(argv[1]);
  a[1] = atof(argv[2]);
  b[0] = atof(argv[3]);
  b[1] = atof(argv[4]);

  GeoDistanceType::OriginType o(2);
  o[0] = b[0];
  o[1] = b[1];

  double expectedDistance = atof(argv[5]);
  double tolerance = atof(argv[6]);

  double distEvaluate2 = geoDistance->Evaluate(a, b);
  double distEvaluate2Null = geoDistance->Evaluate(a, a);

  geoDistance->SetOrigin(o);
  double distEvaluate1 = geoDistance->Evaluate(a);
  double distEvaluate1Null = geoDistance->Evaluate(b);

  // Check results
  bool failFlag = false;
  std::cerr.setf(std::ios_base::fixed);
  std::cerr.precision(5);
  if(vcl_abs(distEvaluate1 - expectedDistance) > tolerance)
    {
    std::cerr<<"Evaluate("<<a<<") with origin "<<o<<" is inaccurate: expected "<< expectedDistance<<", found "<<distEvaluate1<<std::endl;
    failFlag = true;
    }

  if(vcl_abs(distEvaluate2 - expectedDistance) > tolerance)
    {
    std::cerr<<"Evaluate("<<a<<", "<<b<<") is inaccurate: expected "<< expectedDistance<<", found "<<distEvaluate2<<std::endl;
    failFlag = true;
    }

  if(distEvaluate2Null > tolerance)
    {
    std::cerr<<"Evaluate("<<a<<", "<<a<<") is inaccurate: expected 0., found "<<distEvaluate2Null<<std::endl;
    failFlag = true;
    }

    if(distEvaluate1Null > tolerance)
    {
    std::cerr<<"Evaluate("<<b<<") with origin "<<o<< " is inaccurate: expected 0., found "<<distEvaluate2Null<<std::endl;
    failFlag = true;
    }

    if(failFlag)
      return EXIT_FAILURE;

  return EXIT_SUCCESS;
}