import { AxesOption } from "../Axes";
import { AnimationParam, UpdateAnimationOption } from "../types";
import { AnimationManager, AnimationState } from "./AnimationManager";
export declare class EasingManager extends AnimationManager {
    protected _useDuration: boolean;
    protected _options: AxesOption;
    private _durationOffset;
    private _initialEasingPer;
    private _prevEasingPer;
    interpolate(displacement: number, threshold: number): number;
    updateAnimation(options: UpdateAnimationOption): void;
    protected _initState(info: AnimationParam): AnimationState;
    protected _getNextState(prevState: AnimationState): AnimationState;
    private _easing;
}