@itwin/core-common/lib/esm/tile/TileIO.d.ts

iTwin.js components common to frontend and backend

/** @packageDocumentation
 * @module Tile
 */
import { BentleyError, ByteStream } from "@itwin/core-bentley";
import { Point3d } from "@itwin/core-geometry";
/** Type codes for various tile formats. Often these are embedded as 32-bit 'magic numbers' in a binary stream to indicate the format.
 * @internal
 */
export declare enum TileFormat {
    Unknown = 0,
    B3dm = 1835283298,// "b3dm"
    Gltf = 1179937895,// "glTF"
    Pnts = 1937010288,// "pnts"
    IModel = 1818512745,// "iMdl"
    Cmpt = 1953525091,// cmpt
    I3dm = 1835283305,// i3dm
    A3x = 5780289
}
/** Given a magic number, return whether it identifies a known tile format.
 * @internal
 */
export declare function isKnownTileFormat(format: number): boolean;
/** Given a magic number, attempt to convert it to a known TileFormat.
 * @internal
 */
export declare function tileFormatFromNumber(formatNumber: number): TileFormat;
/** Status codes for tile reading operations
 * @internal
 */
export declare enum TileReadStatus {
    Success = 0,
    InvalidTileData = 1,
    InvalidHeader = 2,
    InvalidBatchTable = 3,
    InvalidScene = 4,
    InvalidFeatureTable = 5,
    NewerMajorVersion = 6,
    Canceled = 7
}
/** Exception thrown by functions that deserialize tiles.
 * @internal
 */
export declare class TileReadError extends BentleyError {
    constructor(status: TileReadStatus, message?: string);
    get wasCanceled(): boolean;
}
/** The base header preceding tile data of most formats, identifying the tile format and version of that format.
 * Specific tile formats may define their own headers as sub-types of this Header, appending
 * additional format-specific data.
 * @internal
 */
export declare abstract class TileHeader {
    private _format;
    version: number;
    /** Construct a Header from the binary data at the supplied stream's current read position */
    constructor(stream: ByteStream);
    get format(): TileFormat;
    /** Returns whether the header represents valid data */
    abstract get isValid(): boolean;
    /** Mark the header as representing invalid data */
    protected invalidate(): void;
}
/** Read 3 64-bit floating point numbers at the byte stream's current read position, advance by 24 bytes, and return a Point3d constructed from the 3 numbers.
 * @internal
 */
export declare function nextPoint3d64FromByteStream(stream: ByteStream, result?: Point3d): Point3d;
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