H3XploR
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* calcul_de_vecteur.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: yantoine <yantoine@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/13 20:15:13 by yantoine #+# #+# */
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/* Updated: 2025/02/13 20:15:46 by yantoine ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "miniRT.h"
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// ----- Opérations sur les vecteurs
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t_vec3 vec3_add(t_vec3 a, t_vec3 b)
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{
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return ((t_vec3){a.x + b.x, a.y + b.y, a.z + b.z});
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}
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t_vec3 vec3_sub(t_vec3 a, t_vec3 b)
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{
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return ((t_vec3){a.x - b.x, a.y - b.y, a.z - b.z});
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}
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t_vec3 vec3_scale(t_vec3 a, float s)
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{
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return ((t_vec3){a.x * s, a.y * s, a.z * s});
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}
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float vec3_dot(t_vec3 a, t_vec3 b)
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{
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return (a.x * b.x + a.y * b.y + a.z * b.z);
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}
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t_vec3 vec3_cross(t_vec3 a, t_vec3 b)
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{
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return ((t_vec3){a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y
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- a.y * b.x});
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}
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float vec3_length(t_vec3 a)
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{
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return (sqrtf(vec3_dot(a, a)));
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}
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t_vec3 vec3_normalize(t_vec3 a)
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{
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float len;
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len = vec3_length(a);
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return ((len > 0) ? vec3_scale(a, 1.0f / len) : a);
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}
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t_vec3 vec3_mul(t_vec3 a, t_vec3 b)
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{
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return ((t_vec3){a.x * b.x, a.y * b.y, a.z * b.z});
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}
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