From a9f371ff81df6ee1a50d7a0376c278e6b6a16129 Mon Sep 17 00:00:00 2001
From: Scott Worley <ScottWorley@ScottWorley.com>
Date: Tue, 18 Dec 2012 02:10:03 -0800
Subject: [PATCH] Add closed_trianglefan

---
 box_by_trianglefan.html | 4 ++--
 nt3d.js                 | 3 +++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/box_by_trianglefan.html b/box_by_trianglefan.html
index 1972560..7d4271b 100644
--- a/box_by_trianglefan.html
+++ b/box_by_trianglefan.html
@@ -14,8 +14,8 @@
         var yz     = [0,    size, size];
         var xyz    = [size, size, size];
       	return [].concat(
-      	  nt3d.trianglefan([origin, x, xz, z, yz, y, xy, x]),
-      	  nt3d.trianglefan([xyz, yz, z, xz, x, xy, y, yz]));
+      	  nt3d.closed_trianglefan([origin, x, xz, z, yz, y, xy]),
+      	  nt3d.closed_trianglefan([xyz, yz, z, xz, x, xy, y]));
       }
       var params = [["Size", 1]];
     </script>
diff --git a/nt3d.js b/nt3d.js
index ae17af1..daa628b 100644
--- a/nt3d.js
+++ b/nt3d.js
@@ -30,6 +30,9 @@ nt3d = {
 		}
 		return result;
 	},
+	closed_trianglefan: function(fan) {
+		return nt3d.trianglefan(fan.concat([fan[1]]));
+	},
 	quadstrip: function(strip) {
 		if (strip.length % 2 != 0) {
 			alert("quadstrip length not divisble by 2!");
-- 
2.44.1