Triangle.h

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#ifndef GEOLIB_TRIANGLE_H_
#define GEOLIB_TRIANGLE_H_
 
#include "datatypes.h"
 
namespace geo {
 
double triangleArea(const Vector3& p1, const Vector3& p2, const Vector3& p3);
 
class Triangle {
 
public:
 
    Triangle(const Vector3& p1_, const Vector3& p2_, const Vector3& p3_);
 
    virtual ~Triangle();
 
    inline geo::Vector3& p1() { return (*this)[0]; }
 
    inline const geo::Vector3& p1() const { return (*this)[0]; }
 
    inline geo::Vector3& p2() { return (*this)[1]; }
 
    inline const geo::Vector3& p2() const { return (*this)[1]; }
 
    inline geo::Vector3& p3() { return (*this)[2]; }
 
    inline const geo::Vector3& p3() const { return (*this)[2]; }
 
    inline geo::Vector3& operator[](const uint i) { return m[i]; }
 
    inline const geo::Vector3& operator[](const uint i) const { return m[i]; }
 
    double area() const;
 
    // serialize Triangle to stream
    friend std::ostream& operator<< (std::ostream& out, const Triangle& t);
 
    std::array<geo::Vector3, 3> m;
 
};
 
}
 
#endif