quickhull/Triangle.h

#pragma once

#include "Point.h"
#include "Line.h"

class Triangle
{
private:
    Point m_p1, m_p2, m_p3;
    Line m_l1, m_l2, m_l3;

public:
    // The points must come in __clockwise__ order.
    Triangle(Point p1, Point p2, Point p3)
            : m_p1(p1), m_p2(p2), m_p3(p3),
              m_l1(Line(p1, p2)), m_l2(Line(p2, p3)), m_l3(Line(p3, p1)) {}

    bool is_point_inside(Point other) const
    {
        return m_l1.is_point_right(other) && m_l2.is_point_right(other) && m_l3.is_point_right(other);
    }

    Line l1()
    {
        return m_l1;
    }

    Line l2()
    {
        return m_l2;
    }

    Line l3()
    {
        return m_l3;
    }
};