import type { UndergroundEdge } from '@pascal-app/viewer';
/**
 * The hole's edge looks (`UndergroundEdge`), as numbers: the ground's mask and its rim read them
 * as uniforms and the pit's walls as uniforms and a CPU contour, so changing the look compiles
 * nothing. `noise` is the shipped one; the others are variants to choose from.
 */
export type EdgeLook = {
    /** The hole's base margin around the footprint, in metres. */
    margin: number;
    /** How far the noise moves the edge in or out of the margin, in metres (0: a constant offset). */
    erode: number;
    /** Noise cells per metre on the ground, of the broadest octave. */
    scale: number;
    /** The soft shade on the ground side of the cut: its width in metres and how dark it gets. */
    featherWidth: number;
    featherStrength: number;
    /** The thin line along the cut: its width in metres and colour. */
    lineWidth: number;
    lineColor: string;
    /** How far (m) the pit's walls are roughened sideways in depth. */
    crumble: number;
    /** 1: the wall is a flat section face with a line at grade, not strata under a topsoil layer. */
    section: number;
};
export declare const EDGE_LOOKS: Record<UndergroundEdge, EdgeLook>;
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