/* ************************************************************************** */

/* */

/* ::: :::::::: */

/* light.c :+: :+: :+: */

/* +:+ +:+ +:+ */

/* By: kaan <kaan@student.42.fr> +#+ +:+ +#+ */

/* +#+#+#+#+#+ +#+ */

/* Created: 2024/08/08 14:16:34 by kaan #+# #+# */

/* Updated: 2024/08/25 18:16:40 by kaan ### ########.fr */

/* */

/* ************************************************************************** */

#include "minirt.h"

void light_init(t_light *light)

{

t_vec position;

double intensity;

position = vec(-2, 5, 0);

intensity = 1.0;

light->position = vec(position.x, position.y, position.z);

light->intensity = intensity;

light->color = vec(0.0 + intensity, 0.0 + intensity, 0.0 + intensity);

}

double cos_angle_between(t_vec a, t_vec b)

{

float len;

len = length(a) * length(b);

if (len == 0)

return (1);

return (dot_vec(a, b) / len);

}

double angle_between(t_vec a, t_vec b)

{

return (acos(cos_angle_between(a, b)));

}