More readable Vector3.distanceToSquared.

src/core/Vector3.js

@@ -348,7 +348,10 @@ THREE.Vector3.prototype = {
 
 	distanceToSquared: function ( v ) {
 
-		var dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
+		var dx = this.x - v.x;
+		var dy = this.y - v.y;
+		var dz = this.z - v.z;
+
 		return dx * dx + dy * dy + dz * dz;
 
 	},