From 3e3edddc3d258124d40bfd36bb2e948edabb2453 Mon Sep 17 00:00:00 2001
From: Franklin Wei <me@fwei.tk>
Date: Tue, 4 Apr 2017 19:31:30 -0400
Subject: triangles and fancy stuff

---
 vector.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'vector.c')

diff --git a/vector.c b/vector.c
index 6a19cc9..9ba7bc9 100644
--- a/vector.c
+++ b/vector.c
@@ -123,3 +123,13 @@ vector vect_normalize(vector v)
     }
     return v;
 }
+
+vector vect_cross(vector v1, vector v2)
+{
+    vect_to_rect(&v1);
+    vect_to_rect(&v2);
+    vector ret = { RECT, { v1.rect.y * v2.rect.z - v1.rect.z * v2.rect.y,
+                           v1.rect.z * v2.rect.x - v1.rect.x * v2.rect.z,
+                           v1.rect.x * v2.rect.y - v1.rect.y * v2.rect.x, } };
+    return ret;
+}
-- 
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