import type { Unit } from "../units.ts";
import { type LeagueBase } from "./types.ts";
/** The figures of a curling sheet. Lengths, in the unit of the table they are in. */
export interface SheetFigures {
    /** The sheet as drawn: backboard to backboard (inside edges), and sideline to sideline. The greatest the rules allow. */
    length: number;
    width: number;
    /** The least length and the least width the rules allow. The greatest are `length` and `width`. */
    lengthMin: number;
    widthMin: number;
    /** Each tee line's centre, from the middle of the sheet. */
    teeFromMiddle: number;
    /** The back line's outside edge, from the tee line's centre. */
    backLine: number;
    /** The hog line's inside edge (the circle side), from the tee line's centre. */
    hogLine: number;
    /** How far the centre line runs beyond each tee, which is where the hacks stand. */
    centreBeyondTee: number;
    /** The radii of the 12-, 8- and 4-foot circles and of the button. */
    rings: [twelve: number, eight: number, four: number, button: number];
    /** The widths of the tee, back and centre lines (at most), and of the hog line. */
    lineWidths: {
        line: number;
        hog: number;
    };
    /** A hack: how far its inside edge is from the centre line, how wide it is, and how far it reaches in front of its line. */
    hack: {
        insideFromCentre: number;
        width: number;
        depth: number;
    };
    /** The hack line across the centre line, or none (Curling Canada's book has none). */
    hackLine: number | null;
    /** The courtesy lines at the sides, 6 inches long and 4 feet outside the hog lines, or none (Curling Canada's book has none). */
    courtesy: {
        length: number;
        outsideHog: number;
    } | null;
}
/** A sheet as the drawing wants it: the figures with every length in feet. */
export type SheetSpec = SheetFigures;
/** A sheet's figures in feet, from the unit its rulebook gives them in. */
export declare const sheetInFeet: (figures: SheetFigures, unit: Unit) => SheetSpec;
/** A league with a curling sheet of its own. */
export type CurlingLeague = LeagueBase<"curling", SheetFigures>;
/**
 * World Curling's sheet, from R1 of The Rules of Curling and Rules of Competition (1 September 2026), in metres as it prints them: the sheet is
 * at least 45.720 m long (146 ft, 44.501 m, in an existing facility) and at most 4.750 m wide (at least 4.420 m); each tee line is 17.375 m from
 * the middle; the back line's outside edge is 1.829 m from the tee, the hog line's inside edge 6.401 m; the circles have radii of 1.829,
 * 1.219 and 0.610 m and the button at least 0.152 m; the hog line is 102 mm wide, the others at most 13 mm; the centre line runs 3.658 m beyond
 * each tee; the hack line is 457 mm long; the courtesy lines are 152 mm long and 1.219 m outside the hog lines; each hack's inside edge is 76
 * mm from the middle of the centre line, at most 152 mm wide and 203 mm in front of its line.
 */
export declare const WCF_SHEET: SheetFigures;
/**
 * Curling Canada's sheet, from Rule 3 of the Rules of Curling for General Play (September 2022 to August 2026), in feet as it prints them: 146 to
 * 150 feet from backboard to backboard and 14 ft 2 in to 15 ft 7 in wide; 114 feet from tee to tee; the back line 6 feet from the tee; the hog
 * line's inside edge 21 feet from it; the circles of 6, 4 and 2 feet and a button of at least 6 inches; the centre line 12 feet beyond each tee
 * and the hacks' back edges there, each at most 8 inches long and its inside edge at most 3 inches from the centre line. The book prints no hack
 * line and no courtesy line. Its hack width is not printed; World Curling's 6 inches is drawn.
 */
export declare const CURLING_CANADA_SHEET: SheetFigures;
/** The curling leagues, World Curling's first. */
export declare const CURLING_LEAGUES: readonly CurlingLeague[];