v2f: add random vector within range: v2f_rand()

1 files changed, 18 insertions, 0 deletions

diff --git a/v2f.h b/v2f.h
index 93175a2..44a4985 100644
--- a/v2f.h
+++ b/v2f.h
@@ -277,4 +277,22 @@ static inline v2f_t * v2f_trilerp(v2f_t *res, const v2f_t *aaa, const v2f_t *aba
 	return res;
 }
 
+
+static inline v2f_t _v2f_rand(const v2f_t *min, const v2f_t *max)
+{
+	return (v2f_t){
+		.x = min->x + (float)rand() * (1.f/RAND_MAX) * (max->x - min->x),
+		.y = min->y + (float)rand() * (1.f/RAND_MAX) * (max->y - min->y),
+	};
+}
+
+
+static inline v2f_t * v2f_rand(v2f_t *res, const v2f_t *min, const v2f_t *max)
+{
+	if (_v2f_allocated(&res))
+		*res = _v2f_rand(min, max);
+
+	return res;
+}
+
 #endif