From c3309035c7467f36fba1076236e03eeb406efebe Mon Sep 17 00:00:00 2001
From: Stefan Hedman <schteppe@gmail.com>
Date: Sun, 21 Jun 2015 19:50:30 +0200
Subject: [PATCH] removed unused functions and broken method
 World.prototype.clone, related to
 https://github.com/schteppe/p2.js/issues/165

---
 src/world/World.js | 39 ---------------------------------------
 1 file changed, 39 deletions(-)

diff --git a/src/world/World.js b/src/world/World.js
index 4b1a132a..3325e7c1 100644
--- a/src/world/World.js
+++ b/src/world/World.js
@@ -1106,34 +1106,6 @@ World.prototype.enableBodyCollision = function(bodyA,bodyB){
     }
 };
 
-
-function v2a(v){
-    if(!v){
-        return v;
-    }
-    return [v[0],v[1]];
-}
-
-function extend(a,b){
-    for(var key in b){
-        a[key] = b[key];
-    }
-}
-
-function contactMaterialToJSON(cm){
-    return {
-        id : cm.id,
-        materialA :             cm.materialA.id,
-        materialB :             cm.materialB.id,
-        friction :              cm.friction,
-        restitution :           cm.restitution,
-        stiffness :             cm.stiffness,
-        relaxation :            cm.relaxation,
-        frictionStiffness :     cm.frictionStiffness,
-        frictionRelaxation :    cm.frictionRelaxation,
-    };
-}
-
 /**
  * Resets the World, removes all bodies, constraints and springs.
  *
@@ -1176,17 +1148,6 @@ World.prototype.clear = function(){
     World.apply(this);
 };
 
-/**
- * Get a copy of this World instance
- * @method clone
- * @return {World}
- */
-World.prototype.clone = function(){
-    var world = new World();
-    world.fromJSON(this.toJSON());
-    return world;
-};
-
 var hitTest_tmp1 = vec2.create(),
     hitTest_zero = vec2.fromValues(0,0),
     hitTest_tmp2 = vec2.fromValues(0,0);