import type { VoxelEntry } from "./types.ts";
export declare const DEFAULT_CHUNK_SIZE = 16;
export type VoxelLinearCoords = [number, number, number];
/**
 * A fixed-size 3-D grid of voxel data.
 * Local coordinates run from [0, size) on each axis.
 * Internally uses a sparse Map so empty chunks carry no memory cost.
 *
 * `dirty` is set to true by any write and cleared by VoxelRenderer after
 * the chunk's mesh has been rebuilt.
 */
export declare class VoxelChunk {
    #private;
    /** Chunk coordinates (not world coordinates) */
    readonly cx: number;
    readonly cy: number;
    readonly cz: number;
    readonly size: number;
    dirty: boolean;
    constructor([cx, cy, cz]: [number, number, number], size?: number);
    linearIndex(lx: number, ly: number, lz: number): number;
    fromLinearIndex(idx: number): {
        lx: number;
        ly: number;
        lz: number;
    };
    get(coords: VoxelLinearCoords): VoxelEntry | undefined;
    set(coords: VoxelLinearCoords, entry: VoxelEntry): void;
    delete(coords: VoxelLinearCoords): boolean;
    isEmpty(): boolean;
    entries(): IterableIterator<[number, VoxelEntry]>;
    get voxelCount(): number;
    toString(): string;
}
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