import type * as spec from '@galacean/effects-specification';
import { Vector2 } from '@galacean/effects-math/es/core/vector2';
import { Vector3 } from '@galacean/effects-math/es/core/vector3';
import { Quaternion } from '@galacean/effects-math/es/core/quaternion';
export declare class BezierLengthData {
    points: Array<{
        partialLength: number;
        point: Vector3;
    }>;
    totalLength: number;
    constructor(points: Array<{
        partialLength: number;
        point: Vector3;
    }>, totalLength: number);
}
export declare const BezierMap: Record<string, BezierEasing>;
export declare const BezierDataMap: Record<string, BezierLengthData>;
/**
 * @param p1 起始点
 * @param p2 终点
 * @param p3 起始控制点
 * @param p4 终止控制点
 * @returns
 */
export declare function buildBezierData(p1: Vector3, p2: Vector3, p3: Vector3, p4: Vector3): {
    data: BezierLengthData;
    interval: Vector3;
};
export declare class BezierPath {
    p1: Vector3;
    p2: Vector3;
    p3: Vector3;
    p4: Vector3;
    readonly lengthData: BezierLengthData;
    readonly interval: Vector3;
    readonly totalLength: number;
    private catching;
    constructor(p1: Vector3, p2: Vector3, p3: Vector3, p4: Vector3);
    /**
     * 获取路径在指定比例长度上点的坐标
     * @param percent 路径长度的比例
     */
    getPointInPercent(percent: number): Vector3;
}
export declare class BezierQuat {
    p1: Quaternion;
    p2: Quaternion;
    p3: Quaternion;
    p4: Quaternion;
    private temp;
    readonly totalLength: number;
    constructor(p1: Quaternion, p2: Quaternion, p3: Quaternion, p4: Quaternion);
    /**
     * 获取路径在指定比例长度上点的坐标
     * @param percent 路径长度的比例
     */
    getPointInPercent(percent: number): Quaternion;
}
export declare class BezierEasing {
    private precomputed;
    private mSampleValues;
    private control1;
    private control2;
    private weighted;
    private isConstant;
    constructor();
    constructor(control1: number, control2: number);
    constructor(control1X: number, control1Y: number, control2X: number, control2Y: number);
    getValue(x: number): number;
    private bezierInterpolate;
    private calcSampleValues;
    private getTForX;
    private precompute;
}
export declare function buildEasingCurve(leftKeyframe: spec.BezierKeyframeValue, rightKeyframe: spec.BezierKeyframeValue): {
    points: Vector2[];
    timeInterval: number;
    valueInterval: number;
    curve: BezierEasing;
};
/**
 * 根据关键帧类型获取贝塞尔曲线上的关键点
 */
export declare function getControlPoints(leftKeyframe: spec.BezierKeyframeValue, rightKeyframe: spec.BezierKeyframeValue, lineToBezier: boolean): ({
    type: 'ease';
    p0: Vector2;
    p1: Vector2;
    p2: Vector2;
    p3: Vector2;
    isHold?: boolean;
    leftHoldLine?: boolean;
    rightHoldLine?: boolean;
} | {
    type: 'line';
    p0: Vector2;
    p1: Vector2;
    p2?: Vector2;
    p3?: Vector2;
    isHold?: boolean;
    leftHoldLine?: boolean;
    rightHoldLine?: boolean;
});