diff options
Diffstat (limited to 'vector.c')
| -rw-r--r-- | vector.c | 40 |
1 files changed, 30 insertions, 10 deletions
@@ -6,40 +6,60 @@ /* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2019/11/18 01:28:01 by cacharle #+# #+# */ -/* Updated: 2019/11/19 18:21:22 by cacharle ### ########.fr */ +/* Updated: 2020/01/12 14:39:34 by cacharle ### ########.fr */ /* */ /* ************************************************************************** */ #include "cub3d.h" -t_vector vector_add(t_vector a, t_vector b) +#define VECTOR_MINUS(v) vector_scale(v, -1.0) +#define VECTOR_SUB(v, w) vector_add(v, VECTOR_MINUS(w)) +#define VECTOR_ADD_CONST(v, c) vector_add(v, vector_new(c, c)) + +t_vector vector_add(t_vector a, t_vector b) { a.x += b.x; a.y += b.y; - return a; + return (a); } -t_vector vector_scale(t_vector v, double scalar) +t_vector vector_scale(t_vector v, double scalar) { v.x *= scalar; v.y *= scalar; - return v; + return (v); } /* ** rotate counter clockwise */ -t_vector vector_rotate(t_vector v, double angle) +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; + 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) +double vector_norm(t_vector v) +{ + return (sqrt(SQUARE(v.x) + SQUARE(v.y))); +} + +t_vector vector_new(double x, double y) +{ + t_vector v; + + v.x = x; + v.y = y; + return (v); +} + +t_vector vector_apply(t_vector v, double (*f)(double)) { - return sqrt(SQUARE(v.x) + SQUARE(v.y)); + v.x = f(v.x); + v.y = f(v.y); + return (v); } |