core/math/Frustum.h

#ifndef CORE_FRUSTUM_H
#define CORE_FRUSTUM_H

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

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;

        // returns true on error and calls the error callback
        template<int L>
        check_return bool toString(ArrayString<L>& s) const {
            return s.append("(tan = ") || s.append(tan) ||
                   s.append(", nearClip = ") || s.append(nearClip) ||
                   s.append(", farClip = ") || s.append(farClip) ||
                   s.append(')');
        }
    };
}

#endif