triangle_math.h

/*
**  UICore
**  Copyright (c) 1997-2015 The UICore Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries UICore may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Harry Storbacka
**    Mark Page
*/

#pragma once

#include "vec3.h"

namespace uicore
{
    template<typename Type>
    class Trianglex
    {
    public:
        Vec2<Type> p;

        // \brief Second triangle point
        Vec2<Type> q;

        // \brief Third triangle point
        Vec2<Type> r;

        Trianglex() : p(), q(), r() {}
        Trianglex(const Trianglex<Type> &copy) : p(copy.p), q(copy.q), r(copy.r) {}
        Trianglex(const Vec2<Type> &point_p, const Vec2<Type> &point_q, const Vec2<Type> &point_r) : p(point_p), q(point_q), r(point_r) {}

        bool point_inside(const Vec2<Type> &point) const;

        Trianglex<Type> &operator = (const Trianglex<Type>& copy) { p = copy.p; q = copy.q; r = copy.r; return *this; }
        bool operator == (const Trianglex<Type>& triangle) const { return ((p == triangle.p) && (q == triangle.q) && (r == triangle.r)); }
        bool operator != (const Trianglex<Type>& triangle) const { return ((p != triangle.p) || (q != triangle.q) || (r != triangle.r)); }
    };

    class Triangle : public Trianglex<int>
    {
    public:
        Triangle() { }
        Triangle(const Trianglex<int> &copy) : Trianglex<int>(copy) {}
        Triangle(const Vec2<int> &point_p, const Vec2<int> &point_q, const Vec2<int> &point_r) : Trianglex<int>(point_p, point_q, point_r) {}
    };

    class Trianglef : public Trianglex<float>
    {
    public:
        Trianglef() { }
        Trianglef(const Trianglex<float> &copy) : Trianglex<float>(copy) {}
        Trianglef(const Vec2<float> &point_p, const Vec2<float> &point_q, const Vec2<float> &point_r) : Trianglex<float>(point_p, point_q, point_r) {}
    };

    class Triangled : public Trianglex<double>
    {
    public:
        Triangled() { }
        Triangled(const Trianglex<double> &copy) : Trianglex<double>(copy) {}
        Triangled(const Vec2<double> &point_p, const Vec2<double> &point_q, const Vec2<double> &point_r) : Trianglex<double>(point_p, point_q, point_r) {}
    };
}