SpotLight.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 SpotLight : public LightBase
    {
        MAKE_COMPONENT(SpotLight);

        GResource<Texture> texture;
        float innerAngle  = 35.0f;
        float innerCos    = std::cos(Radians(innerAngle));
        float outerAngle  = 45.0f;
        float outerCos    = std::cos(Radians(outerAngle));
    public:
        SpotLight();

        Vector3 Direction = MakeVector3(0.0f, -1.0f, 0.0f);

        [[nodiscard]] float GetInnerAngle() const;
        [[nodiscard]] float GetOuterAngle() const;
        [[nodiscard]] float GetInnerCos() const;
        [[nodiscard]] float GetOuterCos() const;
        SpotLight& UseInnerAngle(float angle);
        SpotLight& UseOuterAngle(float angle);

        [[nodiscard]] GResource<Texture> GetDepthTexture() const;
        void AttachDepthTexture(const GResource<Texture>& texture);
        [[nodiscard]] Matrix4x4 GetMatrix(const Vector3& position) const;
    };
}