box.h

#ifndef BOX_H
#define BOX_H

#include "rtweekend.h"

#include "aarect.h"
#include "hittable_list.h"

class box : public hittable {
    public:
	box() {}
	box(const point3& p0, const point3& p1, shared_ptr<material> ptr);

	virtual bool hit(const ray& r, double t_min, double t_max, hit_record& rec) const override;

	virtual bool bounding_box(double time0, double time1, aabb& output_box) const override {
	    output_box = aabb(box_min, box_max);
	    return true;
	}

	public:
	    point3 box_min;
	    point3 box_max;
	    hittable_list sides;
};

box::box(const point3& p0, const point3& p1, shared_ptr<material> ptr) {
    box_min = p0;
    box_max = p1;

    sides.add(make_shared<xy_rect>(p0.x(), p1.x(), p0.y(), p1.y(), p1.z(), ptr));
    sides.add(make_shared<xy_rect>(p0.x(), p1.x(), p0.y(), p1.y(), p0.z(), ptr));

    sides.add(make_shared<xz_rect>(p0.x(), p1.x(), p0.z(), p1.z(), p1.y(), ptr));
    sides.add(make_shared<xz_rect>(p0.x(), p1.x(), p0.z(), p1.z(), p0.y(), ptr));

    sides.add(make_shared<yz_rect>(p0.y(), p1.y(), p0.z(), p1.z(), p1.x(), ptr));
    sides.add(make_shared<yz_rect>(p0.y(), p1.y(), p0.z(), p1.z(), p0.x(), ptr));

}

bool box::hit(const ray&r, double t_min, double t_max, hit_record& rec) const {
    return sides.hit(r, t_min, t_max, rec);
}

#endif