function addHelpers(grid_width,dims,light_name) {
  if (light_name){
       var directionalLightHelper = new THREE.DirectionalLightHelper(light_name, 50);
       scene.add(directionalLightHelper)
    }


            var axes = new THREE.AxisHelper(200);
            scene.add(axes);
            var gridXY = new THREE.GridHelper(grid_width, dims, 0xff0000, 0xffffff);
            gridXY.rotation.x = Math.PI;
            gridXY.position.set(0, 0, 0);
            // gridXY.setColors(new THREE.Color(0xff0000), new THREE.Color(0xffffff));
            scene.add(gridXY);
        }