/**
 * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 */
import { Task } from '../../mol-task/index.js';
import { Model } from '../structure.js';
export type TrajectoryFrameType = {
    type: 'default';
}
/** Returns the closest available frame to the requested index  */
 | {
    type: 'snap';
}
/** Interpolates between two available adjacent frames */
 | {
    type: 'interpolate';
    kind?: 'linear';
};
/**
 * A generic interface for representing (partial) trajectories
 */
export interface Trajectory {
    readonly duration: number;
    readonly frameCount: number;
    /** Statically available representative model. Required for example by certain UI actions. */
    readonly representative: Model;
    /** Allows to asynchronously query data from a server or interpolate frames on the fly */
    getFrameAtIndex(i: number, type?: TrajectoryFrameType): Task<Model> | Model;
}
export declare class ArrayTrajectory implements Trajectory {
    private frames;
    readonly duration: number;
    readonly frameCount: number;
    readonly representative: Model;
    getFrameAtIndex(i: number): Model;
    constructor(frames: Model[]);
}