update norme

intersect_objects.c

@@ -0,0 +1,112 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   intersect_objects.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: yantoine <yantoine@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/19 16:07:55 by yantoine          #+#    #+#             */
+/*   Updated: 2025/02/19 16:16:52 by yantoine         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "miniRT.h"
+
+static bool	intersect_spheres(const t_ray ray, t_hit *hit, t_sphere *spheres,
+		int numSpheres)
+{
+	int		i;
+	bool	hitAny;
+		t_vec3 n;
+	float	t;
+
+	i = 0;
+	hitAny = false;
+	while (i < numSpheres)
+	{
+		t = intersect_sphere(ray, spheres[i], &n);
+		if (t > 1e-3f && t < hit->t)
+		{
+			hit->t = t;
+			hit->normal = n;
+			hit->color = spheres[i].color;
+			hitAny = true;
+		}
+		i++;
+	}
+	return (hitAny);
+}
+
+static bool	intersect_planes(const t_ray ray, t_hit *hit, t_plane *planes,
+		int numPlanes)
+{
+	int		i;
+	bool	hitAny;
+		t_vec3 n;
+	float	t;
+
+	i = 0;
+	hitAny = false;
+	while (i < numPlanes)
+	{
+		t = intersect_plane(ray, planes[i], &n);
+		if (t > 1e-3f && t < hit->t)
+		{
+			hit->t = t;
+			hit->normal = n;
+			hit->color = planes[i].color;
+			hitAny = true;
+		}
+		i++;
+	}
+	return (hitAny);
+}
+
+static bool	intersect_cylinders(const t_ray ray, t_hit *hit,
+		t_cylinder *cylinders, int numCylinders)
+{
+	int		i;
+	bool	hitAny;
+		t_vec3 n;
+	float	t;
+
+	i = 0;
+	hitAny = false;
+	while (i < numCylinders)
+	{
+		t = intersect_cylinder(ray, cylinders[i], &n);
+		if (t > 1e-3f && t < hit->t)
+		{
+			hit->t = t;
+			hit->normal = n;
+			hit->color = cylinders[i].color;
+			hitAny = true;
+		}
+		i++;
+	}
+	return (hitAny);
+}
+
+bool	intersect_objects(float *tMin, t_vec3 *hitNormal, t_vec3 *objColor,
+		t_scene scene)
+{
+	t_hit	hit;
+	bool	hitFound;
+
+	hitFound = false;
+	hit.t = *tMin;
+	if (intersect_spheres(scene.ray, &hit, scene.spheres, scene.numSpheres))
+		hitFound = true;
+	if (intersect_planes(scene.ray, &hit, scene.planes, scene.numPlanes))
+		hitFound = true;
+	if (intersect_cylinders(scene.ray, &hit, scene.cylinders,
+			scene.numCylinders))
+		hitFound = true;
+	if (hitFound)
+	{
+		*tMin = hit.t;
+		*hitNormal = hit.normal;
+		*objColor = hit.color;
+	}
+	return (hitFound);
+}