import type { SwimPlan } from "./pool.ts";
import { type BuildOptions } from "./surfaces/surface.ts";
/** The section: its markup and how far it reaches below `y0` (feet). */
export interface Section {
    markup: string;
    height: number;
    /** The id of the gradient its water uses, to define in the drawing's defs. */
    defs: string;
}
/**
 * The section of a pool whose water's surface is at `top` feet (in the drawing's frame, below the plan), for a pool that is `plan.length` long, aligned with the plan along x.
 */
export declare function sectionOf(plan: SwimPlan, o: Pick<BuildOptions, "portrait" | "features" | "exact" | "detail" | "id">, top: number): Section;