line_2d.hpp

#pragma once

#include "global.hpp"

#include "point_2d.hpp"

namespace Cvb
{

CVB_BEGIN_INLINE_NS


class Line2D final
{
public:



  Line2D(Point2D<double> normal, double distance) noexcept
    : normal_(normal)
    , distance_(distance)
  {
    normal_.SetLength(1.0);
  }


  Line2D(Point2D<double> p1, Point2D<double> p2) noexcept
  {
    Point2D<double> tmp = p2 - p1;
    tmp = Point2D<double>(tmp.Y(), -tmp.X());
    SetNormal(tmp);
    SetDistance(normal_ * p1);
  }


  Point2D<double> Normal() const noexcept
  {
    return normal_;
  }


  void SetNormal(Point2D<double> normal)
  {
    normal_ = normal;
    normal.SetLength(1);
  }


  double Distance() const noexcept
  {
    return distance_;
  }


  void SetDistance(double distance) noexcept
  {
    distance_ = distance;
  }


  bool operator==(const Line2D& line) const noexcept
  {
    return (normal_ == line.normal_
      && distance_ == line.distance_);
  }



  bool operator!=(const Line2D& line) const noexcept
  {
    return !(*this == line);
  }

  private:


    Point2D<double> normal_;
    double distance_ = 0.0;
};

CVB_END_INLINE_NS

}