Frustum.hpp

// Copyright (C) 2017 Jérôme Leclercq
// This file is part of the "Nazara Engine - Mathematics module"
// For conditions of distribution and use, see copyright notice in Config.hpp

#pragma once

#ifndef NAZARA_FRUSTUM_HPP
#define NAZARA_FRUSTUM_HPP

#include <Nazara/Core/String.hpp>
#include <Nazara/Math/BoundingVolume.hpp>
#include <Nazara/Math/Enums.hpp>
#include <Nazara/Math/Matrix4.hpp>
#include <Nazara/Math/OrientedBox.hpp>
#include <Nazara/Math/Plane.hpp>
#include <Nazara/Math/Sphere.hpp>
#include <Nazara/Math/Vector3.hpp>

namespace Nz
{
    struct SerializationContext;

    template<typename T>
    class Frustum
    {
        public:
            Frustum() = default;
            template<typename U> explicit Frustum(const Frustum<U>& frustum);
            Frustum(const Frustum& frustum) = default;
            ~Frustum() = default;

            Frustum& Build(T angle, T ratio, T zNear, T zFar, const Vector3<T>& eye, const Vector3<T>& target, const Vector3<T>& up = Vector3<T>::Up());

            bool Contains(const BoundingVolume<T>& volume) const;
            bool Contains(const Box<T>& box) const;
            bool Contains(const OrientedBox<T>& orientedBox) const;
            bool Contains(const Sphere<T>& sphere) const;
            bool Contains(const Vector3<T>& point) const;
            bool Contains(const Vector3<T>* points, unsigned int pointCount) const;

            Frustum& Extract(const Matrix4<T>& clipMatrix);
            Frustum& Extract(const Matrix4<T>& view, const Matrix4<T>& projection);

            const Vector3<T>& GetCorner(BoxCorner corner) const;
            const Plane<T>& GetPlane(FrustumPlane plane) const;

            IntersectionSide Intersect(const BoundingVolume<T>& volume) const;
            IntersectionSide Intersect(const Box<T>& box) const;
            IntersectionSide Intersect(const OrientedBox<T>& orientedBox) const;
            IntersectionSide Intersect(const Sphere<T>& sphere) const;
            IntersectionSide Intersect(const Vector3<T>* points, unsigned int pointCount) const;

            Frustum& operator=(const Frustum& other) = default;

            Frustum& Set(const Frustum& frustum);
            template<typename U> Frustum& Set(const Frustum<U>& frustum);

            String ToString() const;

            template<typename U>
            friend bool Serialize(SerializationContext& context, const Frustum<U>& frustum);
            template<typename U>
            friend bool Unserialize(SerializationContext& context, Frustum<U>* frustum);

        private:
            Vector3<T> m_corners[BoxCorner_Max+1];
            Plane<T> m_planes[FrustumPlane_Max+1];
    };

    typedef Frustum<double> Frustumd;
    typedef Frustum<float> Frustumf;
}

template<typename T>
std::ostream& operator<<(std::ostream& out, const Nz::Frustum<T>& frustum);

#include <Nazara/Math/Frustum.inl>

#endif // NAZARA_FRUSTUM_HPP