X-Git-Url: http://git.scottworley.com/nt3d/blobdiff_plain/4e2bdb62f6ca8a3a42462f056fdd55bedb41b1e1..a9f371ff81df6ee1a50d7a0376c278e6b6a16129:/nt3d.js?ds=inline

diff --git a/nt3d.js b/nt3d.js
index ba2315f..daa628b 100644
--- a/nt3d.js
+++ b/nt3d.js
@@ -23,6 +23,16 @@ nt3d = {
 		return this.triangle(a, b, c).concat(
 		       this.triangle(c, d, a));
 	},
+	trianglefan: function(fan) {
+		var result = [];
+		for (var i = 2; i < fan.length; i++) {
+			result.push(fan[0], fan[i-1], fan[i]);
+		}
+		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!");
@@ -34,7 +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],