Add closed_trianglefan

[nt3d] / nt3d.js

diff --git a/nt3d.js b/nt3d.js
index 623c0f1b3756940087c0bcc07f0a364891a1a532..daa628b4c2bd5cfc79483dc9a1a8959e3da195e2 100644 (file)
--- 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!");
@@ -41,7 +44,7 @@ nt3d = {
                return result;
        },
        closed_quadstrip: function(strip) {
-               return nt3d.quadstrip(strip).concat(nt3d.quad(strip[strip.length-2], strip[strip.length-1], strip[1], strip[0]));
+               return nt3d.quadstrip(strip.concat([strip[0], strip[1]]));
        },
        sub: function(a, b) {
                return [a[0] - b[0],