export declare class Ease24 {
    /**
     * Linear easing.
     * @static
     * @memberof Ease24
     */
    static _Linear(t: number, b: number, c: number, d: number): number;
    /**
     * Sine easing-in.
     * @static
     * @memberof Ease24
     */
    static _1_SineIn(t: number, b: number, c: number, d: number): number;
    /**
     * Sine easing-out.
     * @static
     * @memberof Ease24
     */
    static _1_SineOut(t: number, b: number, c: number, d: number): number;
    /**
     * Sine easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _1_SineInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Sine easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _1_SineOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quad easing-in.
     * @static
     * @memberof Ease24
     */
    static _2_QuadIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quad easing-out.
     * @static
     * @memberof Ease24
     */
    static _2_QuadOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quad easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _2_QuadInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quad easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _2_QuadOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Cubic easing-in.
     * @static
     * @memberof Ease24
     */
    static _3_CubicIn(t: number, b: number, c: number, d: number): number;
    /**
     * Cubic easing-out.
     * @static
     * @memberof Ease24
     */
    static _3_CubicOut(t: number, b: number, c: number, d: number): number;
    /**
     * Cubic easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _3_CubicInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Cubic easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _3_CubicOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quart easing-in.
     * @static
     * @memberof Ease24
     */
    static _4_QuartIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quart easing-out.
     * @static
     * @memberof Ease24
     */
    static _4_QuartOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quart easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _4_QuartInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quart easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _4_QuartOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quint easing-in.
     * @static
     * @memberof Ease24
     */
    static _5_QuintIn(t: number, b: number, c: number, d: number): number;
    /**
     * Quint easing-out.
     * @static
     * @memberof Ease24
     */
    static _5_QuintOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quint easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _5_QuintInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Quint easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _5_QuintOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Expo easing-in.
     * @static
     * @memberof Ease24
     */
    static _6_ExpoIn(t: number, b: number, c: number, d: number): number;
    /**
     * Expo easing-out.
     * @static
     * @memberof Ease24
     */
    static _6_ExpoOut(t: number, b: number, c: number, d: number): number;
    /**
     * Expo easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _6_ExpoInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Expo easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _6_ExpoOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Circ easing-in.
     * @static
     * @memberof Ease24
     */
    static _7_CircIn(t: number, b: number, c: number, d: number): number;
    /**
     * Circ easing-out.
     * @static
     * @memberof Ease24
     */
    static _7_CircOut(t: number, b: number, c: number, d: number): number;
    /**
     * Circ easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _7_CircInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Circ easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _7_CircOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Back easing-in with overshoot.
     * @static
     * @param {number} [overshoot=1.70158] オーバー値（デフォルト値：1.70158）
     * @memberof Ease24
     */
    static _BackInWith(overshoot?: number): Function;
    /**
     * Back easing-out with overshoot.
     * @static
     * @param {number} [overshoot=1.70158] オーバー値（デフォルト値：1.70158）
     * @memberof Ease24
     */
    static _BackOutWith(overshoot?: number): Function;
    /**
     * Back easing-in-out with overshoot.
     * @static
     * @param {number} [overshoot=1.70158] オーバー値（デフォルト値：1.70158）
     * @memberof Ease24
     */
    static _BackInOutWith(overshoot?: number): Function;
    /**
     * Back easing-out-in with overshoot.
     * @static
     * @param {number} [overshoot=1.70158] オーバー値（デフォルト値：1.70158）
     * @memberof Ease24
     */
    static _BackOutInWith(overshoot?: number): Function;
    /**
     * Back easing-in.
     * @static
     * @memberof Ease24
     */
    static _BackIn: Function;
    /**
     * Back easing-out.
     * @static
     * @memberof Ease24
     */
    static _BackOut: Function;
    /**
     * Back easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _BackInOut: Function;
    /**
     * Back easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _BackOutIn: Function;
    /**
     * Bounce easing-in.
     * @static
     * @memberof Ease24
     */
    static _BounceIn(t: number, b: number, c: number, d: number): number;
    /**
     * Bounce easing-out.
     * @static
     * @memberof Ease24
     */
    static _BounceOut(t: number, b: number, c: number, d: number): number;
    /**
     * Bounce easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _BounceInOut(t: number, b: number, c: number, d: number): number;
    /**
     * Bounce easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _BounceOutIn(t: number, b: number, c: number, d: number): number;
    /**
     * Elastic easing-in with amplitude & period.
     * @static
     * @param {number} amplitude 振幅の大きさ（デフォルト値：0）
     * @param {number} period 振幅の周期（デフォルト値：0）
     * @memberof Ease24
     */
    static _ElasticInWith(amplitude?: number, period?: number): Function;
    /**
     * Elastic easing-out with amplitude & period.
     * @static
     * @param {number} amplitude 振幅の大きさ（デフォルト値：0）
     * @param {number} period 振幅の周期（デフォルト値：0）
     * @memberof Ease24
     */
    static _ElasticOutWith(amplitude?: number, period?: number): Function;
    /**
     * Elastic easing-in-out with amplitude & period.
     * @static
     * @param {number} amplitude 振幅の大きさ（デフォルト値：0）
     * @param {number} period 振幅の周期（デフォルト値：0）
     * @memberof Ease24
     */
    static _ElasticInOutWith(amplitude?: number, period?: number): Function;
    /**
     * Elastic easing-out-in with amplitude & period.
     * @static
     * @param {number} amplitude 振幅の大きさ（デフォルト値：0）
     * @param {number} period 振幅の周期（デフォルト値：0）
     * @memberof Ease24
     */
    static _ElasticOutInWith(amplitude?: number, period?: number): Function;
    /**
     * Elastic easing-in.
     * @static
     * @memberof Ease24
     */
    static _ElasticIn: Function;
    /**
     * Elastic easing-out.
     * @static
     * @memberof Ease24
     */
    static _ElasticOut: Function;
    /**
     * Elastic easing-in-out.
     * @static
     * @memberof Ease24
     */
    static _ElasticInOut: Function;
    /**
     * Elastic easing-out-in.
     * @static
     * @memberof Ease24
     */
    static _ElasticOutIn: Function;
    /**
     * 2つのイージングをミックスして、新しいイージングを生成します。
     * ※この関数は blend() に移行しました。将来的に削除される可能性があります。
     * @static
     * @param {Function} easeA 元になるイージング
     * @param {Function} easeB 混合されるイージング
     * @param {Function} mixing 混合率を指定するイージング
     * @param {number} start 開始時の混合率
     * @param {number} end 終点時の混合率
     * @memberof Ease24
     */
    static _Blend(easeA: Function, easeB: Function, mixing: Function, start?: number, end?: number): Function;
    /**
     * 2つのイージングをミックスして、新しいイージングを生成します。
     * @static
     * @param {Function} easeA 元になるイージング
     * @param {Function} easeB 混合されるイージング
     * @param {Function} mixing 混合率を指定するイージング
     * @param {number} start 開始時の混合率
     * @param {number} end 終点時の混合率
     * @memberof Ease24
     */
    static blend(easeA: Function, easeB: Function, mixing: Function, start?: number, end?: number): Function;
    private static _customEasingById;
    private static _set;
    /**
     * 登録したカスタムイージングを取得します。
     * @static
     * @param {string} id カスタムイージングのID
     * @memberof Ease24
     */
    static get: (id: string) => Function | undefined;
    /**
     * 登録したカスタムイージングをクリアします。
     * @static
     * @param {string} id カスタムイージングのID
     * @memberof Ease24
     */
    static clear: (id: string) => void;
    /**
     * カスタムイージングを作成します。
     * 作成時にIDを指定すると、get()関数でイージングを呼び出せるようになります。
     * 指定するパラメータのフォーマットは GreenSockの Ease Visualizer に準じています。
     * Ease Visualizer: https://greensock.com/ease-visualizer/
     * @static
     * @param {(string|null)} id 登録するカスタムイージングのID。登録しない場合は null を指定します
     * @param {string} svgPathData カスタムイージングのSVGパスデータ
     * @memberof Ease24
     */
    static create: (id: string | null, svgPathData: string) => Function;
    private static _custom;
    private static _getYForX;
    /**
     * @param a The first value of the Bezier equation.
     * @param b The second value of the Bezier equation.
     * @param c The third value of the Bezier equation.
     * @param d The fourth value of the Bezier equation.
     * @return An array containing four number values,
     */
    private static _getCubicCoefficients;
    /**
     * @param a The first coefficient of the cubic equation, which is multiplied by the cubed variable (t^3).
     * @param b The second coefficient of the cubic equation, which is multiplied by the squared variable (t^2).
     * @param c The third coefficient of the cubic equation, which is multiplied by the linear variable (t).
     * @param d The fourth coefficient of the cubic equation, which is the constant.
     * @return An array of number values, indicating the real roots of the equation.
     */
    private static _getCubicRoots;
    /**
     * @param a The first value of the Bezier equation.
     * @param b The second value of the Bezier equation.
     * @param c The third value of the Bezier equation.
     * @param d The fourth value of the Bezier equation.
     * @return The value of the Bezier equation at the specified time.
     */
    private static _getSingleValue;
    /**
     * @param a The first coefficient of the quadratic equation, which is multiplied by the squared variable (t^2).
     * @param b The second coefficient of the quadratic equation, which is multiplied by the linear variable (t).
     * @param c The third coefficient of the quadratic equation, which is the constant.
     * @return An array of number values, indicating the real roots of the equation.
     */
    private static _getQuadraticRoots;
}