From 542ae0113ac850e0d5216c7e2dc4543e66a1237f Mon Sep 17 00:00:00 2001 From: Charles Date: Mon, 18 Nov 2019 02:56:38 +0100 Subject: Added rotation, mlx_clear_window feelsgoodman --- linear_algebra.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 linear_algebra.c (limited to 'linear_algebra.c') diff --git a/linear_algebra.c b/linear_algebra.c new file mode 100644 index 0000000..881f8ff --- /dev/null +++ b/linear_algebra.c @@ -0,0 +1,40 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* linear_algebra.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: cacharle +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2019/11/18 01:28:01 by cacharle #+# #+# */ +/* Updated: 2019/11/18 01:32:41 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); +} -- cgit