ScaleMesh.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 "TransformMesh.hpp"
 
namespace CeresEngine::MeshGenerator {
 
    template<typename Mesh> class ScaleMesh {
    private:
        using Impl = TransformMesh<Mesh>;
        Impl mTransformMesh;
 
    public:
        ScaleMesh(Mesh mesh, const Vector3& scale)
                : mTransformMesh{std::move(mesh), [scale](MeshVertex& value) {
                                     value.position *= scale;
                                     value.normal = normalize(scale * value.normal);
                                 }} {}
 
        using Triangles = typename Impl::Triangles;
        [[nodiscard]] Triangles triangles() const noexcept { return mTransformMesh.triangles(); }
 
        using Vertices = typename Impl::Vertices;
        [[nodiscard]] Vertices vertices() const noexcept { return mTransformMesh.vertices(); }
    };
 
    template<typename Mesh> ScaleMesh<Mesh> scaleMesh(Mesh mesh, const Vector3& delta) { return ScaleMesh<Mesh>{std::move(mesh), delta}; }
 
} // namespace CeresEngine::MeshGenerator