import type { TerrainLevel } from '../types/terrain.types';
import type { ColorInput } from '../../types/body.types';
/**
 * Four-stop band-colour input consumed by {@link buildGasPalette}. Ordered
 * dark → mid-dark → mid-light → light, matching the threshold schedule
 * hardcoded below.
 */
export interface GasBandColors {
    colorA: ColorInput;
    colorB: ColorInput;
    colorC: ColorInput;
    colorD: ColorInput;
}
/**
 * Build a gas giant {@link TerrainLevel} palette from four band colours
 * supplied by the caller. The lib stays agnostic about the chemistry — the
 * caller computes the four stops from its own gas catalogue + body
 * composition and passes the result in. When `bands` is omitted, a neutral
 * warm-tan default is used.
 *
 * Thresholds and roughness schedule are identical to the legacy molecule-
 * specific branches so existing materials continue to band-edge correctly.
 */
export declare function buildGasPalette(bands?: GasBandColors): TerrainLevel[];
//# sourceMappingURL=paletteGas.d.ts.map