43 lines
707 B
C
43 lines
707 B
C
#ifndef OBJ_H
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#define OBJ_H
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#include "ray.h"
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#define SPHERE(x, y, z, r) \
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{ \
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.intersect = intersect_sphere, \
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.params = { \
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.sphere = { .centre = { x, y, z }, .radius = r }, \
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}, \
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}
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typedef struct {
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vec3_t point, normal;
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double t;
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bool front;
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} hit_t;
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typedef struct {
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vec3_t centre;
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double radius;
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} sphere_params_t;
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typedef union {
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sphere_params_t sphere;
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} obj_params_t;
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typedef bool intersect_fn_t(
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obj_params_t params, ray_t ray, hit_t *hit_out, double t_min,
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double t_max);
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typedef struct {
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intersect_fn_t *intersect;
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obj_params_t params;
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} obj_t;
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bool intersect_sphere(
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obj_params_t params, ray_t ray, hit_t *hit_out, double t_min,
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double t_max);
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#endif
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