core/math/Frustum.hpp

#ifndef CORE_FRUSTUM_HPP
#define CORE_FRUSTUM_HPP

#include "data/Array.hpp"
#include "math/Matrix.hpp"
#include "math/Plane.hpp"

namespace Core {
    class Frustum final {
        Matrix projection;
        Array<Plane, 6> planes;

    public:
        float tan;
        float nearClip;
        float farClip;

        Frustum(float fieldOfView, float nearClip, float farClip);
        const Matrix& updateProjection(const IntVector2& size);
        void updatePlanes(const Vector3& pos, const Vector3& right,
                          const Vector3& up, const Vector3& front,
                          const IntVector2& size);

        bool isInside(const Vector3& pos) const;
        bool isInside(const Vector3& pos, float radius) const;

        template<typename String>
        check_return Error toString(String& s) const {
            CORE_RETURN_ERROR(s.append("(tan = "));
            CORE_RETURN_ERROR(s.append(tan));
            CORE_RETURN_ERROR(s.append(", nearClip = "));
            CORE_RETURN_ERROR(s.append(nearClip));
            CORE_RETURN_ERROR(s.append(", farClip = "));
            CORE_RETURN_ERROR(s.append(farClip));
            CORE_RETURN_ERROR(s.append(')'));
            return Error::NONE;
        }
    };
}

#endif