ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Core/Common/DistanceBetweenPoints/Code.cxx
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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.txt
*
* 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 "itkMath.h"
#include <iostream>
int
main(int, char *[])
{
constexpr unsigned int Dimension = 3;
using CoordType = double;
p0[0] = 0.0;
p0[1] = 0.0;
p0[2] = 0.0;
p1[0] = 1.0;
p1[1] = 1.0;
p1[2] = 1.0;
PointType::RealType dist = p0.EuclideanDistanceTo(p1);
std::cout << "Dist: " << dist << std::endl;
if (dist != p1.EuclideanDistanceTo(p0))
{
std::cerr << "p0.EuclideanDistanceTo(p1) != p1.EuclideanDistanceTo(p0)" << std::endl;
return EXIT_FAILURE;
}
if (p1.EuclideanDistanceTo(p1) != 0.)
{
std::cerr << "p1.EuclideanDistanceTo(p1) != 0." << std::endl;
return EXIT_FAILURE;
}
PointType::RealType dist2 = p0.SquaredEuclideanDistanceTo(p1);
std::cout << "Dist2: " << dist2 << std::endl;
if (std::abs(dist2 - dist * dist) < itk::Math::eps)
{
std::cerr << "dist2 != dist * dist" << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
itkPoint.h
itk::GTest::TypedefsAndConstructors::Dimension2::PointType
ImageBaseType::PointType PointType
Definition: itkGTestTypedefsAndConstructors.h:51
itk::Math::eps
static constexpr double eps
Definition: itkMath.h:95
itk::Point::EuclideanDistanceTo
RealType EuclideanDistanceTo(const Point< TCoordRepB, NPointDimension > &pa) const
Definition: itkPoint.h:293
itk::Point
A templated class holding a geometric point in n-Dimensional space.
Definition: itkPoint.h:53
itk::GTest::TypedefsAndConstructors::Dimension2::Dimension
constexpr unsigned int Dimension
Definition: itkGTestTypedefsAndConstructors.h:44
itkMath.h