t_double3 raytracer(t_vector ray, t_scene *scene,
t_object *to_ignore, int depth)
{
t_surface *surface;
t_double3 color_hit;
if (depth == DEPTH_MAX)
color_hit = (t_double3){0, 0, 0};
surface = intersect(ray, scene, to_ignore);
if (surface->object == NULL)
color_hit = (t_double3){0, 0, 0};
else
{
color_hit = (t_double3){0, 0, 0};
// color_hit = color_mix(surface->object->color, scene->ambiant, color_diffused(scene, surface, ray));
color_hit = color_mix(surface->color, scene->ambiant, color_diffused(scene, surface, ray));
if (surface->object->reflex > 0.01)
color_hit = color_mix(color_reflected(ray, scene, surface, depth),
surface->object->reflex, color_hit);
if (surface->object->transparency > 0.01)
color_hit = color_mix(color_refracted(ray, scene, surface, depth),
surface->object->transparency, color_hit);
}
if (scene->direct_light)
color_hit = direct_light(ray, scene, color_hit);
free(surface);
return (color_hit);
}
t_double3 color_diffused(t_scene *scene, t_surface *surface, t_vector ray)
{
t_double3 color_hit;
t_light *light;
int light_nb;
double dot_light;
t_surface *light_intersect;
t_double3 reflected;
color_hit = (t_double3){0, 0, 0};
light = scene->light;
light_nb = 0;
while (light)
{
light_intersect = is_in_light(surface, scene, light, &dot_light);
if (light_intersect->object == NULL || light_intersect->distance > 0)
{
color_hit = v_plus_v(color_hit, color_mix(scale_v(light->color,
dot_light), surface->object->gloss,
// scale_v(surface->object->color, dot_light)));
scale_v(surface->color, dot_light)));
reflected = reflect(scale_v(normalize(v_minus_v(light->pos, surface->point)), -1), surface->normal);
color_hit = v_plus_v(color_hit, scale_v(light->color, pow(max_double(0, -dot_product(reflected, ray.dir) * surface->object->gloss), 2)));
}
free(light_intersect);
light_nb++;
light = light->next;
}
if (light_nb > 1)
color_hit = scale_v(color_hit, (1.0 / (double)light_nb));
return (color_hit);
}
void fill_color_val(t_env *e)
{
int i;
int j;
int k;
translate_colors_to_rgb(e);
k = 0;
j = 0;
while (j < DETAIL)
{
i = 0;
while (i < e->iteration / DETAIL)
{
e->color_val[k] = color_mix(e, i, j);
i++;
k++;
}
j++;
}
e->color_val[k] = RGB(255, 255, 255);
}
t_double3 direct_light(t_vector ray, t_scene *scene,
t_double3 color_hit)
{
t_light *light;
t_double3 light_vector;
t_surface *light_intersect;
double dot_light;
light = scene->light;
while (light)
{
light_vector = v_minus_v(light->pos, ray.pos);
dot_light = dot_product(normalize(light_vector), ray.dir);
dot_light = max_double(0, exp(dot_light + 7.51745) -5000);
light_intersect = intersect((t_vector){scene->camera.pos,
normalize(light_vector)}, scene, NULL);
if (light_intersect->object == NULL || (light_intersect->distance >
length_v(light_vector)))
color_hit = color_mix(light->color, dot_light, color_hit);
free(light_intersect);
light = light->next;
}
return (color_hit);
}
