PointLight.h

// Copyright(c) 2019 - 2020, #Momo
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#pragma once

#include "Platform/GraphicAPI.h"
#include "Utilities/ECS/Component.h"
#include "LightBase.h"

namespace MxEngine
{
    class PointLight : public LightBase
    {
        MAKE_COMPONENT(PointLight);

        GResource<CubeMap> cubemap;
        Vector3 factors   = MakeVector3(1.0f, 0.009f, 0.032f);
    public:
        PointLight();

        float FarDistance = 1000.0f;

        constexpr static size_t Constant  = 0;
        constexpr static size_t Linear    = 1;
        constexpr static size_t Quadratic = 2;

        PointLight& UseFactors(const Vector3& factors);
        [[nodiscard]] const Vector3& GetFactors() const;
        [[nodiscard]] float ComputeRadius() const;

        [[nodiscard]] GResource<CubeMap> GetDepthCubeMap() const;
        void AttachDepthCubeMap(const GResource<CubeMap>& cubemap);
        [[nodiscard]] Matrix4x4 GetMatrix(size_t index, const Vector3& position) const;
    };
}