removed the unused v parameter in getPos

rewrote the code to benefit from this change

src/extras/geometries/TorusKnotGeometry.js

@@ -25,31 +25,29 @@ THREE.TorusKnotGeometry = function ( radius, tube, radialSegments, tubularSegmen
 	for ( var i = 0; i < this.radialSegments; ++ i ) {
 
 		this.grid[ i ] = new Array( this.tubularSegments );
+		var u = i / this.radialSegments * 2 * this.p * Math.PI;
+		var p1 = getPos( u, this.q, this.p, this.radius, this.heightScale );
+		var p2 = getPos( u + 0.01, this.q, this.p, this.radius, this.heightScale );
+		tang.subVectors( p2, p1 );
+		n.addVectors( p2, p1 );
+
+		bitan.crossVectors( tang, n );
+		n.crossVectors( bitan, tang );
+		bitan.normalize();
+		n.normalize();
 
 		for ( var j = 0; j < this.tubularSegments; ++ j ) {
 
-			var u = i / this.radialSegments * 2 * this.p * Math.PI;
 			var v = j / this.tubularSegments * 2 * Math.PI;
-			var p1 = getPos( u, v, this.q, this.p, this.radius, this.heightScale );
-			var p2 = getPos( u + 0.01, v, this.q, this.p, this.radius, this.heightScale );
-			var cx, cy;
-
-			tang.subVectors( p2, p1 );
-			n.addVectors( p2, p1 );
-
-			bitan.crossVectors( tang, n );
-			n.crossVectors( bitan, tang );
-			bitan.normalize();
-			n.normalize();
-
-			cx = - this.tube * Math.cos( v ); // TODO: Hack: Negating it so it faces outside.
-			cy = this.tube * Math.sin( v );
+			var cx = - this.tube * Math.cos( v ); // TODO: Hack: Negating it so it faces outside.
+			var cy = this.tube * Math.sin( v );
 
-			p1.x += cx * n.x + cy * bitan.x;
-			p1.y += cx * n.y + cy * bitan.y;
-			p1.z += cx * n.z + cy * bitan.z;
+			var pos = new THREE.Vector3();
+			pos.x = p1.x + cx * n.x + cy * bitan.x;
+			pos.y = p1.y + cx * n.y + cy * bitan.y;
+			pos.z = p1.z + cx * n.z + cy * bitan.z;
 
-			this.grid[ i ][ j ] = vert( p1.x, p1.y, p1.z );
+			this.grid[ i ][ j ] = scope.vertices.push( pos ) - 1;;
 
 		}
 
@@ -82,16 +80,9 @@ THREE.TorusKnotGeometry = function ( radius, tube, radialSegments, tubularSegmen
 	this.computeFaceNormals();
 	this.computeVertexNormals();
 
-	function vert( x, y, z ) {
-
-		return scope.vertices.push( new THREE.Vector3( x, y, z ) ) - 1;
-
-	}
-
-	function getPos( u, v, in_q, in_p, radius, heightScale ) {
+	function getPos( u, in_q, in_p, radius, heightScale ) {
 
 		var cu = Math.cos( u );
-		var cv = Math.cos( v );
 		var su = Math.sin( u );
 		var quOverP = in_q / in_p * u;
 		var cs = Math.cos( quOverP );