LineSegment.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

// MOOSE includes
#include "Moose.h" // using namespace libMesh
#include "DataIO.h"

#include "json.h"
#include "libmesh/point.h"

// forward declarations
namespace libMesh
{
class Plane;
}

class LineSegment
{
public:
  LineSegment() = default;
  LineSegment(const Point & p0, const Point & p1);

  virtual ~LineSegment() = default;

  Point closest_point(const Point & p) const;

  bool closest_normal_point(const Point & p, Point & closest_p) const;

  bool contains_point(const Point & p) const;

  bool intersect(const Plane & pl, Point & intersect_p) const;

  bool intersect(const LineSegment & l1, Point & intersect_p) const;

  const Point & start() const { return _p0; }

  const Point & end() const { return _p1; }

  void setStart(const Point & p0) { _p0 = p0; }

  void setEnd(const Point & p1) { _p1 = p1; }

  void set(const Point & p0, const Point & p1);

  Real length() const { return (_p0 - _p1).norm(); }

private:
  bool closest_point(const Point & p, bool clamp_to_segment, Point & closest_p) const;

  Point _p0, _p1;
};

void dataStore(std::ostream & stream, LineSegment & l, void * context);
void dataLoad(std::istream & stream, LineSegment & l, void * context);

void to_json(nlohmann::json & json, const LineSegment & l);