export declare type CUBIC_NUMBER = [number, number, number, number];
export declare const EASE: CUBIC_NUMBER;
export declare const EASE_IN: CUBIC_NUMBER;
export declare const EASE_IN_OUT: CUBIC_NUMBER;
export declare const EASE_OUT: CUBIC_NUMBER;
export default class CubicBezier {
    x1: number;
    y1: number;
    x2: number;
    y2: number;
    constructor(x1: number, y1: number, x2: number, y2: number);
    /**
     *
     * @param t Range of 0 ~ 1
     */
    getCoordinate(t: number): number[];
    getTransition(targetX: number): number;
}