import type { PitWalls } from './ground-pit-geometry.js';
import type { EdgeLook } from './underground-edge.js';
/**
 * The pit under the hole, seen from above: over a level that lies deep, the hole in the ground
 * reads as the ground cut open, not as a white plate. Its sides are a section — the topsoil's
 * layer, then strata of two anthracites cut by the same noisy threshold as the rim, darkening
 * with depth — standing from grade down to the shown level's floor, and at the bottom a dark
 * floor under the part of the hole the level does not fill. The levels between stay hidden: the
 * level display still hides them, the pit only says there is a drop.
 *
 * Everything that moves is a uniform (the pit's floor, how far the hole is open); the walls'
 * geometry is cut once per footprint change, as the hole's own field is, and rides the same
 * contour (`ground-pit-geometry.ts`). The materials exist from the moment the scene has a level
 * below grade, so a floor switch compiles nothing.
 */
/**
 * The two looks: `true` the section walls and a dark floor under the hole's unbuilt part, `false`
 * the walls alone (the level is then seen over the backdrop, as the hole always showed it).
 */
export declare const PIT_FLOOR = true;
/** Sets the walls' look for an edge look (uniforms: nothing recompiles). */
export declare function setGroundPitEdge(look: EdgeLook): void;
/** The floor the pit goes down to now, world Y (the last level shown below grade). */
export declare function groundPitFloorNow(): number;
/** Where the pit draws its dark floor now, world Y: under the plate of that floor. */
export declare function groundPitDrawnFloorNow(): number;
/**
 * The pit's walls and floor. `walls` is the cut contour (null: no hole), `box` the field's
 * footprint the floor covers, `topY` the grade, `floorY` the shown level's floor and `drawnFloorY`
 * where the dark floor is drawn (`groundPitFloorY`), all world Y.
 */
export declare function GroundPit({ walls, box, topY, floorY, drawnFloorY, topsoil, inHole, }: {
    walls: PitWalls | null;
    box: {
        originX: number;
        originZ: number;
        span: number;
    } | null;
    topY: number;
    floorY: number | null;
    drawnFloorY: number | null;
    topsoil: string;
    inHole: unknown;
}): import("react").JSX.Element;
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