import { type Plane } from "./turn.kit.ts";
/** What a net on a court is: where it hangs, between which posts, and the line of its top and of its bottom. */
export interface NetBody {
    id: string;
    x: number;
    y0: number;
    y1: number;
    /** The height of the top edge and of the bottom edge over a place across the court, above the court's own surface. */
    top: (y: number) => number;
    bottom: (y: number) => number;
    /** The mesh's cell, and the tape along the top, in feet. */
    cell: number;
    tape: number;
    /** Vertical white bands across the net at these places across the court (volleyball's side bands), and their width. */
    bands?: {
        at: readonly number[];
        width: number;
    };
}
/** The net: a mesh between a top line and a bottom line, with its tape, on one plane standing over the line x. */
export declare function netPlane(b: NetBody, lift: number): Plane;
/** A parabola from the centre height to the post height: the sag of a net hung between two posts. */
export declare const sag: (y0: number, y1: number, centre: number, posts: number) => (y: number) => number;
/**
 * A table: a skirt under its top and four legs set in from its ends, over the rectangle (x0, y0) to (x1, y1), its top `lift` feet over the floor. `top` also draws the top
 * itself (a teqball table stands on a court; a table tennis table is the surface, which the drawing already shows).
 */
export declare function tableBody(x0: number, y0: number, x1: number, y1: number, lift: number, thin: number, top: boolean): Plane[];