/**
 * Returns the centroid of a geometry, or the component of the centroid.
 *
 * @remarks
 * It takes 1 or 2 arguments.
 *
 * centroid(<input_index_or_node_path\>, <vector_component\>)
 *
 * - **<input_index_or_node_path\>** is a number or a string
 * - **<vector_component\>** is a string, either 'x', 'y' or 'z'
 *
 * ## Usage
 *
 * - `centroid(0)` - returns the centroid of the input node, as a THREE.Box3
 * - `centroid('/geo1/box')` - returns the centroid of the node /geo1/box, as a THREE.Box3
 * - `centroid('/geo1/box', 'x')` - returns the x component of centroid of the bbox, as a number
 *
 */
import { BaseMethod } from './_Base';
import { MethodDependency } from '../MethodDependency';
export declare class CentroidExpression extends BaseMethod {
    protected _require_dependency: boolean;
    static required_arguments(): string[][];
    find_dependency(index_or_path: number | string): MethodDependency | null;
    process_arguments(args: any[]): Promise<any>;
}