text: var CircleBody = PhysicsObject.extend({
      makeBody: function(radius,bodyType,density,restitution,friction,pos,angle,userData){
          var bodyDef = new b2BodyDef();
          bodyDef.type = bodyType;
          bodyDef.position.Set(pos.x/PMR, pos.y/PMR);
          bodyDef.angle = cc.degreesToRadians(angle);
          bodyDef.userData = userData;
          this.body = this.world.CreateBody(bodyDef);
          this.shape = new b2CircleShape();
          this.shape.SetRadius(radius/PMR);
          var fixDef = new b2FixtureDef();
          fixDef.shape=this.shape;
          fixDef.density=density;
          fixDef.friction=friction;
          fixDef.restitution = restitution;
          this.body.CreateFixture(fixDef);
      }
  })