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//
// Created by Keuin on 2022/4/15.
//
#ifndef RT_MATERIAL_REFLECTIVE_H
#define RT_MATERIAL_REFLECTIVE_H
#include "vec.h"
#include "material.h"
template<bool cond>
struct s_fuzzy_ {
// non-fuzzy material does not need these variables
// we remove them with an empty struct
};
template<>
struct s_fuzzy_<true> {
double f; // how fuzzy the material is
// those are parameters that only fuzzy materials have
};
// metal with perfectly smooth surface
template<bool Fuzzy>
class material_reflective_ : public material {
vec3d albedo;
s_fuzzy_<Fuzzy> fuzzy_;
public:
// FIXME conditionally enable these constructors by template parameter `Fuzzy`.
// Non-fuzzy constructors
explicit material_reflective_(vec3d &color) : albedo(color), fuzzy_{} {}
explicit material_reflective_(vec3d &&color) : albedo(color), fuzzy_{} {}
explicit material_reflective_(double color) : albedo{color, color, color}, fuzzy_{} {}
// Fuzzy constructors, with special parameters
explicit material_reflective_(vec3d &color, double f) : albedo(color), fuzzy_{f} {}
explicit material_reflective_(vec3d &&color, double f) : albedo(color), fuzzy_{f} {}
explicit material_reflective_(double color, double f) : albedo{color, color, color}, fuzzy_{f} {}
bool scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const override;
};
using material_reflective = material_reflective_<false>;
using material_fuzzy_reflective = material_reflective_<true>;
#endif //RT_MATERIAL_REFLECTIVE_H
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