import { EasingFunction } from "./types";
/**
 * @namespace easing
 */
/**
* Cubic Bezier curve.
* @memberof easing
* @func bezier
* @param {number} [x1] - point1's x
* @param {number} [y1] - point1's y
* @param {number} [x2] - point2's x
* @param {number} [y2] - point2's y
* @return {function} the curve function
* @example
import {bezier} from "scenejs";
Scene.bezier(0, 0, 1, 1) // LINEAR
Scene.bezier(0.25, 0.1, 0.25, 1) // EASE
*/
export declare function bezier(x1: number, y1: number, x2: number, y2: number): EasingFunction;
/**
* Specifies a stepping function
* @see {@link https://www.w3schools.com/cssref/css3_pr_animation-timing-function.asp|CSS3 Timing Function}
* @memberof easing
* @func steps
* @param {number} count - point1's x
* @param {"start" | "end"} postion - point1's y
* @return {function} the curve function
* @example
import {steps} from "scenejs";
Scene.steps(1, "start") // Scene.STEP_START
Scene.steps(1, "end") // Scene.STEP_END
*/
export declare function steps(count: number, position: "start" | "end"): EasingFunction;
/**
* Equivalent to steps(1, start)
* @memberof easing
* @name STEP_START
* @static
* @type {function}
* @example
import {STEP_START} from "scenejs";
Scene.STEP_START // steps(1, start)
*/
export declare const STEP_START: EasingFunction;
/**
* Equivalent to steps(1, end)
* @memberof easing
* @name STEP_END
* @static
* @type {function}
* @example
import {STEP_END} from "scenejs";
Scene.STEP_END // steps(1, end)
*/
export declare const STEP_END: EasingFunction;
/**
* Linear Speed (0, 0, 1, 1)
* @memberof easing
* @name LINEAR
* @static
* @type {function}
* @example
import {LINEAR} from "scenejs";
Scene.LINEAR
*/
export declare const LINEAR: EasingFunction;
/**
* Ease Speed (0.25, 0.1, 0.25, 1)
* @memberof easing
* @name EASE
* @static
* @type {function}
* @example
import {EASE} from "scenejs";
Scene.EASE
*/
export declare const EASE: EasingFunction;
/**
* Ease In Speed (0.42, 0, 1, 1)
* @memberof easing
* @name EASE_IN
* @static
* @type {function}
* @example
import {EASE_IN} from "scenejs";
Scene.EASE_IN
*/
export declare const EASE_IN: EasingFunction;
/**
* Ease Out Speed (0, 0, 0.58, 1)
* @memberof easing
* @name EASE_OUT
* @static
* @type {function}
* @example
import {EASE_OUT} from "scenejs";
Scene.EASE_OUT
*/
export declare const EASE_OUT: EasingFunction;
/**
* Ease In Out Speed (0.42, 0, 0.58, 1)
* @memberof easing
* @name EASE_IN_OUT
* @static
* @type {function}
* @example
import {EASE_IN_OUT} from "scenejs";
Scene.EASE_IN_OUT
*/
export declare const EASE_IN_OUT: EasingFunction;