import * as spec from '@galacean/effects-specification';
import { Vector2 } from '@galacean/effects-math/es/core/vector2';
import { BezierEasing } from '../bezier';
import type { KeyFrameMeta } from './value-getter';
import { ValueGetter } from './value-getter';
interface CurveInfo {
    points: Vector2[];
    timeInterval: number;
    valueInterval: number;
    curve: BezierEasing;
    timeStart: number;
    timeEnd: number;
}
export interface Keyframe {
    time: number;
    value: number;
    inSlope: number;
    outSlope: number;
    inWeight: number;
    outWeight: number;
    weightedMode: WeightedMode;
    tangentMode: TangentMode;
}
export declare enum TangentMode {
    Cubic = 0,
    Linear = 1,
    Constant = 2
}
export declare enum WeightedMode {
    None = 0,
    In = 1,
    Out = 2,
    Both = 3
}
export declare class BezierCurve extends ValueGetter<number> {
    curveMap: Record<string, CurveInfo>;
    keys: number[][];
    private keyFrames;
    private curveInfos;
    onCreate(props: spec.BezierKeyframeValue[]): void;
    getValue(time: number): number;
    getIntegrateValue(t0: number, t1: number, ts?: number): number;
    getIntegrateByTime(t0: number, t1: number): number;
    getCurveIntegrateValue(curveKey: string, time: number): number;
    toUniform(meta: KeyFrameMeta): Float32Array;
    toData(): Float32Array;
    getMaxTime(): number;
}
export declare function oldBezierKeyFramesToNew(props: spec.BezierKeyframeValue[]): Keyframe[];
export {};