/**
 * @author @thkruz Theodore Kruczek
 * @license AGPL-3.0-or-later
 * @copyright (c) 2025 Kruczek Labs LLC
 *
 * Orbital Object ToolKit is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * Orbital Object ToolKit is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with
 * Orbital Object ToolKit. If not, see <http://www.gnu.org/licenses/>.
 */
import { EpochUTC, EpochWindow, J2000 } from '../main.js';
import { CubicSplineInterpolator } from './CubicSplineInterpolator.js';
import { LagrangeInterpolator } from './LagrangeInterpolator.js';
import { StateInterpolator } from './StateInterpolator.js';
/**
 * Two-body Velocity Verlet Blend interpolator.
 *
 * The [VerletBlendInterpolator] retains the original ephemerides, so the
 * original _"truth"_ states can be retrieved if needed without imparting any
 * additional error, so this can be used to build other interpolator types.
 * The implementation is simple and very tolerant when working with sparse
 * ephemerides.
 */
export declare class VerletBlendInterpolator extends StateInterpolator {
    ephemeris: J2000[];
    constructor(ephemeris: J2000[]);
    get sizeBytes(): number;
    window(): EpochWindow;
    private static getClosest_;
    private matchState_;
    private static _gravity;
    private static integrate_;
    interpolate(epoch: EpochUTC): J2000 | null;
    getCachedState(epoch: EpochUTC): J2000 | null;
    toCubicSpline(): CubicSplineInterpolator;
    toLagrange(order?: number): LagrangeInterpolator;
}