60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
#ifndef INCLUDED_HITTABLE_H
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#define INCLUDED_HITTABLE_H
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#include "arena.h"
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#include "material.h"
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#include "point3.h"
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#include "ray.h"
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#include "vec3.h"
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#include <stdbool.h>
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#include <stddef.h>
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typedef struct HitRecord {
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const Material *material;
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Point3 p;
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Vec3 normal;
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double t;
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bool front_face;
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} HitRecord;
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void hit_record_set_face_normal(HitRecord *record, Ray r, Vec3 outward_normal);
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typedef enum HittableType {
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HITTABLE_LIST,
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HITTABLE_SPHERE,
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} HittableType;
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typedef struct Hittable {
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HittableType type;
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} Hittable;
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bool hittable_hit(const Hittable *hittable, Ray r, double t_min, double t_max,
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HitRecord *record);
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typedef struct HittableList {
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HittableType type;
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const Hittable **objects;
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size_t size;
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size_t capacity;
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} HittableList;
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void hittable_list_add(HittableList *list, const Hittable *hittable,
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Arena *arena);
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bool hittable_list_hit(const HittableList *list, Ray r, double t_min,
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double t_max, HitRecord *record);
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typedef struct Sphere {
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HittableType type;
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const Material *material;
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Point3 center;
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double radius;
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} Sphere;
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Sphere *sphere_create(Point3 center, double radius, const Material *material,
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Arena *arena);
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bool sphere_hit(const Sphere *sphere, Ray r, double t_min, double t_max,
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HitRecord *record);
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#endif /* INCLUDED_HITTABLE_H */
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