import type { TerrainLevel } from '../types/terrain.types';
/**
 * Densify a terrain palette to `targetCount` levels by linearly interpolating
 * thresholds, heights, colours, metalness and roughness between consecutive
 * anchors of the source palette.
 *
 * The last anchor's threshold is preserved as `Infinity` so the catch-all
 * semantic stays intact. Returns the palette unchanged when `targetCount`
 * is smaller than or equal to the source length, or when the source has
 * fewer than two anchors.
 *
 * @param palette     - Source palette (≥ 2 anchors, sorted ascending by threshold).
 * @param targetCount - Desired total level count (≥ palette.length).
 * @returns Expanded palette with exactly `targetCount` levels.
 */
export declare function subdividePalette(palette: TerrainLevel[], targetCount: number): TerrainLevel[];
//# sourceMappingURL=paletteSubdivide.d.ts.map