import * as THREE from "three";
import type { VoxelWorld } from "../world/VoxelWorld.ts";
import type { VoxelChunk } from "../world/VoxelChunk.ts";
import type { VoxelLayer } from "../world/VoxelLayer.ts";
import type { BlockRegistry } from "../blocks/BlockRegistry.ts";
import type { BlockShapeRegistry } from "../blocks/BlockShapeRegistry.ts";
import type { TilesetManager } from "../tileset/TilesetManager.ts";
export interface VoxelMeshBuilderOptions {
    world: VoxelWorld;
    blockRegistry: BlockRegistry;
    shapeRegistry: BlockShapeRegistry;
    tilesetManager: TilesetManager;
}
/**
 * Builds per-tileset THREE.BufferGeometries for one chunk using naive face culling.
 *
 * Algorithm: for each filled voxel, emit only the faces where the adjacent
 * voxel in the face's direction either does not exist or does not occlude.
 * Non-axis-aligned faces (slopes, corners) correctly rotate their culling
 * direction via rotateFace() before the neighbour lookup.
 *
 * Voxels at a position already occupied by a higher-priority layer are skipped
 * entirely (the higher layer's chunk will render that position instead).
 *
 * Geometry is split by tileset so each resulting mesh can be assigned the
 * correct material/texture when multiple tilesets are in use.
 *
 * Greedy meshing is intentionally omitted: it is incompatible with per-face UV
 * rotation and the non-cube shapes supported by this renderer.
 */
export declare class VoxelMeshBuilder {
    #private;
    constructor(options: VoxelMeshBuilderOptions);
    /**
     * Builds merged BufferGeometries for one chunk, grouped by tileset ID.
     * Returns null if the chunk is empty or produces no visible faces.
     *
     * Each entry in the returned Map is a separate geometry containing only the
     * faces whose tile references belong to that tileset, allowing the caller to
     * bind the correct texture per draw call.
     */
    buildChunkGeometries(chunk: VoxelChunk, layer: VoxelLayer): Map<string, THREE.BufferGeometry> | null;
}
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