GMSPolygon.h

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#ifndef GMS_POLYGON_H_
#define GMS_POLYGON_H_
 
#include <cstddef>
#include <utility>
#include <vector>
 
#include "Orientation.h"
#include "Vector.h"
using namespace mathtool;
 
 
class GMSPolygon {
 
  public:
 
 
    typedef typename std::vector<Point3d>      PointList;
    typedef typename std::vector<int>          IndexList;
 
    typedef typename IndexList::const_iterator const_iterator;
 
 
    GMSPolygon();
 
    GMSPolygon(const int _v1, const int _v2, const int _v3,
        const PointList& _pts);
 
    GMSPolygon(const_iterator _begin, const_iterator _end,
        const PointList& _pts);
 
 
    const_iterator begin() const noexcept;
    const_iterator end() const noexcept;
 
 
    const int& operator[](const size_t _i) const noexcept;
 
    size_t GetNumVertices() const noexcept;
 
    const Point3d& GetPoint(const size_t _i) const noexcept;
 
    Vector3d& GetNormal() noexcept;
    const Vector3d& GetNormal() const noexcept;
 
    double GetArea() const noexcept;
 
 
    void Reverse();       
    void ComputeNormal(); 
 
 
    bool operator==(const GMSPolygon& _p) const noexcept;
    bool operator!=(const GMSPolygon& _p) const noexcept;
 
 
    bool operator<(const GMSPolygon& _other) const noexcept;
    bool operator>(const GMSPolygon& _other) const noexcept;
 
 
    const bool IsTriangle() const noexcept;
 
    const Point3d FindCenter() const noexcept;
 
    const bool PointIsAbove(const Point3d& _p) const noexcept;
 
    const int CommonVertex(const GMSPolygon& _p) const noexcept;
 
    const std::pair<int, int> CommonEdge(const GMSPolygon& _p) const noexcept;
 
 
  private:
 
 
    void AlignIndexes() noexcept;
 
 
    IndexList m_indexes;  
    Vector3d m_normal;    
    double m_area{0};     
 
    const PointList* m_pointList{nullptr};
 
};
 
#endif