AnyMesh.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "AnyGenerator.hpp"
#include "MeshVertex.hpp"
#include "Triangle.hpp"
 
#include "CeresEngine/Foundation/SmartPtr.hpp"
 
namespace CeresEngine::MeshGenerator {
 
    class AnyMesh {
    public:
        template<typename Mesh> AnyMesh(Mesh mesh) : mBase{new Derived<Mesh>{std::move(mesh)}} {}
 
        AnyMesh(const AnyMesh& that);
        AnyMesh& operator=(const AnyMesh& that);
 
        AnyMesh(AnyMesh&&) = default;
        AnyMesh& operator=(AnyMesh&&) = default;
 
        [[nodiscard]] AnyGenerator<Triangle> triangles() const noexcept;
        [[nodiscard]] AnyGenerator<MeshVertex> vertices() const noexcept;
 
    private:
        class Base {
        public:
            virtual ~Base();
            [[nodiscard]] virtual UPtr<Base> clone() const = 0;
            [[nodiscard]] virtual AnyGenerator<Triangle> triangles() const = 0;
            [[nodiscard]] virtual AnyGenerator<MeshVertex> vertices() const = 0;
        };
 
        template<typename Mesh> class Derived : public Base {
        public:
            Derived(Mesh mesh) : mMesh(std::move(mesh)) {}
 
            [[nodiscard]] virtual UPtr<Base> clone() const override { return UPtr<Base>{new Derived{mMesh}}; }
            [[nodiscard]] virtual AnyGenerator<Triangle> triangles() const override { return mMesh.triangles(); }
            [[nodiscard]] virtual AnyGenerator<MeshVertex> vertices() const override { return mMesh.vertices(); }
 
            Mesh mMesh;
        };
 
        UPtr<Base> mBase;
    };
 
} // namespace CeresEngine::MeshGenerator