MeshLOD.h

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

#include "Utilities/ECS/Component.h"
#include "Core/Resources/AssetManager.h"
#include "MeshSource.h"

namespace MxEngine
{
    struct LODConfig
    {
        std::array<float, 5> Factors{ 0.001f, 0.01f, 0.05f, 0.15f, 0.3f };
    };

    class MeshLOD
    {
        MAKE_COMPONENT(MeshLOD);
    public:
        using LODInstance = MeshHandle;
        using LODIndex = uint8_t;

        bool AutoLODSelection = true;
        LODIndex CurrentLOD = 0;

        MxVector<LODInstance> LODs;
        void Generate(LODConfig config = LODConfig{ });
        void FixBestLOD(const Vector3& viewportPosition, float viewportZoom = 1.0f);
        LODInstance GetMeshLOD() const;
    };
}