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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* linear_algebra.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/11/18 01:28:01 by cacharle #+# #+# */
/* Updated: 2020/02/04 02:13:38 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 (hypot(v.x, v.y));
}
t_vector vector_new(double x, double y)
{
t_vector v;
v.x = x;
v.y = y;
return (v);
}
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