/*!
 * Ecctrl
 * https://github.com/pmndrs/ecctrl
 *
 * SPDX-FileCopyrightText: 2023-2026 Erdong Chen
 * SPDX-License-Identifier: MIT
 */
import * as THREE from "three";
import type { RapierRigidBody } from "@react-three/rapier";
export interface CustomGravityState {
    gravityField: (pos: THREE.Vector3) => THREE.Vector3;
    setGravityField: (fn: (pos: THREE.Vector3) => THREE.Vector3) => void;
    applyGravityField: (body: RapierRigidBody, timeStep: number) => void;
}
export declare const useCustomGravity: import("zustand").UseBoundStore<Omit<import("zustand").StoreApi<CustomGravityState>, "subscribe"> & {
    subscribe: {
        (listener: (selectedState: CustomGravityState, previousSelectedState: CustomGravityState) => void): () => void;
        <U>(selector: (state: CustomGravityState) => U, listener: (selectedState: U, previousSelectedState: U) => void, options?: {
            equalityFn?: ((a: U, b: U) => boolean) | undefined;
            fireImmediately?: boolean;
        } | undefined): () => void;
    };
}>;