#pragma once

#include "common_structures.hpp"

class ImplicitSurface {
    public:
        virtual double operator() (double x, double y, double z) const = 0;
        double operator()(const Point& pt) const;
        Point getCenter() const { return center;}

        const Color& get_color() const { return color; }
        void set_color(const Color& _color) { color = _color; }

        virtual Point location_hint() const = 0;

        /// Compute the normal vector to the isosurface at `pt`
        Point normal_at(const Point& pt) const;
    protected:
        Point center;
        Color color;

        ImplicitSurface(Point _center) : center(_center) {}
};