import { Vec2 } from "../types/point";
/**
 * Calculate Euclidean distance between two points.
 */
export declare const getDistance: (p1x: number, p1y: number, p2x: number, p2y: number) => number;
/**
 * Calculate squared distance.
 *
 * Useful when avoiding sqrt for performance.
 */
export declare const getDistanceSquared: (p1x: number, p1y: number, p2x: number, p2y: number) => number;
/**
 * Angle between two points in radians.
 */
export declare const getAngle: (p1x: number, p1y: number, p2x: number, p2y: number) => number;
/**
 * Linear interpolation between two points.
 *
 * t:
 * 0 → start point
 * 1 → end point
 */
export declare const getPointBetween: (p1x: number, p1y: number, p2x: number, p2y: number, t?: number) => Vec2;
/**
 * Split number into repeated unit chunks.
 *
 * @example
 * splitDecimal(3.2)
 * // [1, 1, 1, 0.2]
 *
 * splitDecimal(4.1, 2)
 * // [2, 2, 0.1]
 */
export declare const splitDecimal: (num: number, unit?: number) => number[];
/**
 * Clamp number between min and max.
 */
export declare const clamp: (num: number, min: number, max: number) => number;
/**
 * Clamp number between 0 and 1.
 */
export declare const clamp01: (num: number) => number;
/**
 * Wrap number into range:
 * 0 <= value < max
 *
 * @example
 * wrap(5, 3) => 2
 * wrap(-5, 3) => 1
 * wrap(3, 3) => 0
 */
export declare const wrap: (num: number, max: number) => number;
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