46 lines
1 KiB
C++
46 lines
1 KiB
C++
#ifndef HITTABLE_LIST_H
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#define HITTABLE_LIST_H
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#include "hittable.hpp"
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#include <memory>
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#include <vector>
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using std::shared_ptr;
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using std::make_shared;
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struct hittable_list : hittable {
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/* Attributes */
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std::vector<shared_ptr<hittable>> objects;
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/* Constructors */
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hittable_list () {}
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hittable_list(shared_ptr<hittable> h) { add(h); }
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/* Methods */
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void clear() { objects.clear(); }
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void add (shared_ptr<hittable> h) { objects.push_back(h); }
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virtual bool hit(const ray& r, double t_min, double t_max, hit_record& rec) const override;
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};
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bool hittable_list::hit(const ray& r, double t_min, double t_max, hit_record& rec) const
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{
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hit_record temp_rec;
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bool hit_anything = false;
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double closest_so_far = t_max;
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for (const auto& object : objects)
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{
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if (object->hit(r, t_min, closest_so_far, temp_rec))
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{
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hit_anything = true;
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closest_so_far = temp_rec.t;
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rec = temp_rec;
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}
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}
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return hit_anything;
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}
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#endif
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