import { Vector3 } from 'three';
import { ElementData } from './ElementData';
import { SharedGeometry } from './SharedGeometry';
import { InstanceGeometry } from './InstanceGeometry';
import { SceneGrid, SceneLevel, SceneLoader } from './SceneLoader';
import { SceneStats } from './SceneStats';
import * as protobuf from 'protobufjs';
export declare const sceneRoot = "tangl-viewer-scene";
export interface SceneLoaderCacheCommon {
    id: string;
    origin: Vector3;
    levels: SceneLevel[];
    grids: SceneGrid[];
    stats: SceneStats;
    isWrongOrigin: boolean;
    wrongOriginDistance: number;
    elementDatas: Map<number, ElementData>;
    initialInstanceCount: number;
    initialInstanceRawCount: number;
}
export interface SceneLoaderCacheShared {
    sharedGeoms: Map<string, SharedGeometry>;
}
export interface SceneLoaderCacheInstance {
    instanceGeoms: Map<string, InstanceGeometry>;
}
export declare class SceneLoaderPB2 {
    readonly tag = "SceneLoaderCache";
    SceneLoaderCacheCommonMessage: protobuf.Type;
    SceneLoaderCacheSharedMessage: protobuf.Type;
    SceneLoaderCacheInstanceMessage: protobuf.Type;
    buffers: Set<ArrayBuffer>;
    maxSceneCacheFiles: number;
    maxChunkByteSize: number;
    initProtobuf(maxSceneCacheFiles?: number, maxChunkByteSize?: number): Promise<void>;
    static clearAllCache(): Promise<void>;
    fetchGeometry(guid: string): Promise<{
        common: SceneLoaderCacheCommon;
        shared: SceneLoaderCacheShared;
        instance: SceneLoaderCacheInstance;
        buffers: Set<ArrayBuffer>;
    } | undefined>;
    cacheGeometry(guid: string, origin: Vector3, sceneLoader: SceneLoader): Promise<boolean>;
    private writeCommon;
    private writeShared;
    private writeInstance;
    private removeOldCache;
    private serializeSceneLoaderCacheCommon;
    private serializeSceneLoaderCacheShared;
    private serializeSceneLoaderCacheInstance;
    private deserializeSceneLoaderCacheCommon;
    private deserializeSceneLoaderCacheShared;
    private deserializeSceneLoaderCacheInstance;
}