Yannis Antoine
113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* intersect_objects.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: yantoine <yantoine@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/19 16:07:55 by yantoine #+# #+# */
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/* Updated: 2025/03/05 14:19:33 by yantoine ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "miniRT.h"
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static bool intersect_spheres(const t_ray ray, t_hit *hit, t_sphere *spheres,
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int num_spheres)
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{
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int i;
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bool hit_any;
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t_vec3 n;
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float t;
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i = 0;
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hit_any = false;
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while (i < num_spheres)
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{
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t = intersect_sphere(ray, spheres[i], &n);
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if (t > 0.001f && t < hit->t)
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{
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hit->t = t;
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hit->normal = n;
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hit->color = spheres[i].color;
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hit_any = true;
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}
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i++;
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}
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return (hit_any);
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}
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static bool intersect_planes(const t_ray ray, t_hit *hit, t_plane *planes,
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int num_planes)
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{
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int i;
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bool hit_any;
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t_vec3 n;
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float t;
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i = 0;
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hit_any = false;
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while (i < num_planes)
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{
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t = intersect_plane(ray, planes[i], &n);
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if (t > 0.001f && t < hit->t)
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{
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hit->t = t;
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hit->normal = n;
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hit->color = planes[i].color;
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hit_any = true;
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}
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i++;
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}
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return (hit_any);
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}
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static bool intersect_cylinders(const t_ray ray, t_hit *hit,
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t_cylinder *cylinders, int num_cylinders)
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{
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int i;
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bool hit_any;
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t_vec3 n;
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float t;
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i = 0;
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hit_any = false;
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while (i < num_cylinders)
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{
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t = intersect_cylinder(ray, cylinders[i], &n);
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if (t > 0.001f && t < hit->t)
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{
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hit->t = t;
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hit->normal = n;
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hit->color = cylinders[i].color;
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hit_any = true;
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}
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i++;
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}
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return (hit_any);
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}
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bool intersect_objects(float *tMin, t_vec3 *hitNormal, t_vec3 *objColor,
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t_scene scene)
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{
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t_hit hit;
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bool hit_found;
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hit_found = false;
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hit.t = *tMin;
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if (intersect_spheres(scene.ray, &hit, scene.spheres, scene.num_spheres))
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hit_found = true;
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if (intersect_planes(scene.ray, &hit, scene.planes, scene.num_planes))
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hit_found = true;
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if (intersect_cylinders(scene.ray, &hit, scene.cylinders,
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scene.num_cylinders))
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hit_found = true;
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if (hit_found)
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{
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*tMin = hit.t;
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*hitNormal = hit.normal;
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*objColor = hit.color;
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}
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return (hit_found);
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}
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