import type { Point } from '../types/geometry.js';
/** A dash pattern ready to walk, and where its offset leaves the walk at the first point. */
export interface Dash {
    dashes: number[];
    index: number;
    remaining: number;
    on: boolean;
}
/**
 * A pattern as canvas's setLineDash reads it, prepared once for every contour
 * it is walked along: an odd-length pattern repeats to make it even, and the
 * offset skips into the pattern before the first point. Null when it draws
 * solid.
 *
 * `bridge` is how much of a gap the caps at two facing run ends close between
 * them, which is the stroke width for a square cap and nothing for the others.
 * See bridgeGaps.
 */
export declare function prepareDash(pattern: number[], offset?: number, bridge?: number): Dash | null;
/**
 * Splits a polyline into the drawn runs of a dash, one polyline per run, so
 * callers can render them as ordinary line segments.
 */
export declare function dashPolyline(points: readonly Point[], dash: Dash): Point[][];
export declare function samePoint(a: Point, b: Point): boolean;