From 988e058680280e25d345b17d840c3c6d40e30a76 Mon Sep 17 00:00:00 2001 From: Charles Date: Fri, 10 Jan 2020 11:44:44 +0100 Subject: refactoring --- vector.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 vector.c (limited to 'vector.c') diff --git a/vector.c b/vector.c new file mode 100644 index 0000000..babaf12 --- /dev/null +++ b/vector.c @@ -0,0 +1,45 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* linear_algebra.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: cacharle +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2019/11/18 01:28:01 by cacharle #+# #+# */ +/* Updated: 2019/11/19 18:21:22 by cacharle ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include "cub3d.h" + +t_vector vector_add(t_vector a, t_vector b) +{ + a.x += b.x; + a.y += b.y; + return a; +} + +t_vector vector_scale(t_vector v, double scalar) +{ + v.x *= scalar; + v.y *= scalar; + return v; +} + +/* +** rotate counter clockwise +*/ + +t_vector vector_rotate(t_vector v, double angle) +{ + t_vector rotated; + + rotated.x = cos(angle) * v.x - sin(angle) * v.y; + rotated.y = sin(angle) * v.x + cos(angle) * v.y; + return (rotated); +} + +double vector_norm(t_vector v) +{ + return sqrt(SQUARE(v.x) + SQUARE(v.y)); +} -- cgit