X-Git-Url: http://git.scottworley.com/nt3d/blobdiff_plain/a26d096067f110dc88756789d771851ae58e0d1e..a4cc880243177697bfa0a1e9091bfd12a60366ab:/nt3d.js

diff --git a/nt3d.js b/nt3d.js
index 9d45486..ae17af1 100644
--- a/nt3d.js
+++ b/nt3d.js
@@ -23,6 +23,26 @@ 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;
+	},
+	quadstrip: function(strip) {
+		if (strip.length % 2 != 0) {
+			alert("quadstrip length not divisble by 2!");
+		}
+		var result = [];
+		for (var i = 2; i < strip.length; i += 2) {
+			result = result.concat(nt3d.quad(strip[i-2], strip[i-1], strip[i+1], strip[i]));
+		}
+		return result;
+	},
+	closed_quadstrip: function(strip) {
+		return nt3d.quadstrip(strip.concat([strip[0], strip[1]]));
+	},
 	sub: function(a, b) {
 		return [a[0] - b[0],
 		        a[1] - b[1],