Removed Vector*.isZero()

src/core/Geometry.js

@@ -138,11 +138,7 @@ THREE.Geometry.prototype = {
 			ab.sub( vA, vB );
 			cb.crossSelf( ab );
 
-			if ( !cb.isZero() ) {
-
-				cb.normalize();
-
-			}
+			cb.normalize();
 
 			face.normal.copy( cb );
 

src/core/Vector2.js

@@ -160,12 +160,6 @@ THREE.Vector2.prototype = {
 
 	},
 
-	isZero: function ( v ) {
-
-		return this.lengthSq() < ( v !== undefined ? v : 0.0001 );
-
-	},
-
 	clone: function () {
 
 		return new THREE.Vector2( this.x, this.y );

src/core/Vector3.js

@@ -476,12 +476,6 @@ THREE.Vector3.prototype = {
 
 	},
 
-	isZero: function ( v ) {
-
-		return this.lengthSq() < ( v !== undefined ? v : 0.0001 );
-
-	},
-
 	clone: function () {
 
 		return new THREE.Vector3( this.x, this.y, this.z );