ParametricShape.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 "Edge.hpp"
#include "ShapeVertex.hpp"
 
#include "CeresEngine/Foundation/Function.hpp"
 
namespace CeresEngine::MeshGenerator {
 
    class ParametricShape {
    public:
        class Edges {
        public:
            [[nodiscard]] Edge generate() const;
            [[nodiscard]] bool done() const noexcept;
            void next();
 
        private:
            Edges(const ParametricShape& shape);
 
            const ParametricShape* mShape;
 
            int i_;
 
            friend class ParametricShape;
        };
 
        class Vertices {
        public:
            ShapeVertex generate() const;
            [[nodiscard]] bool done() const noexcept;
            void next();
 
        private:
            Vertices(const ParametricShape& shape);
 
            const ParametricShape* mShape;
 
            int i_;
 
            friend class ParametricShape;
        };
 
        explicit ParametricShape(Function<ShapeVertex(double) const> eval, int segments = 16) noexcept;
 
        [[nodiscard]] Edges edges() const noexcept;
 
        [[nodiscard]] Vertices vertices() const noexcept;
 
    private:
        Function<ShapeVertex(double) const> mEval;
 
        int mSegments;
 
        double mDelta;
    };
 
} // namespace CeresEngine::MeshGenerator