EE.Object3D();

				// 参数一 圈的大小 参数二 左右间距 参数三 上下间距
				cylindrical.set(900, theta, y);

				object.position.setFromCylindrical(cylindrical);

				vector.x = object.position.x * 2;
				vector.y = object.position.y;
				vector.z = object.position.z * 2;

				object.lookAt(vector);

				targets.helix.push(object);

			}

			// grid

			for (var i = 0; i < objects.length; i++) {

				var object = new THREE.Object3D();

				object.position.x = ((i % 5) * 400) - 800; // 40