diff --git a/src/as/com/threerings/flash/Vector2.as b/src/as/com/threerings/flash/Vector2.as
index 18d63976..199cd58e 100644
--- a/src/as/com/threerings/flash/Vector2.as
+++ b/src/as/com/threerings/flash/Vector2.as
@@ -44,6 +44,14 @@ public class Vector2
         return new Vector2(p.x, p.y);
     }
 
+    /**
+     * Creates a new Vector2 pointing from s to t.
+     */
+    public static function fromPoints (s :Point, t :Point) :Vector2
+    {
+        return new Vector2(t.x - s.x, t.y - s.y);
+    }
+    
     /**
      * Creates a Vector2 of magnitude 'len' that has been rotated about the origin by 'radians'.
      */