@loaders.gl/3d-tiles/dist/lib/parsers/parse-3d-tile.js

3D Tiles, an open standard for streaming massive heterogeneous 3D geospatial datasets.

// loaders.gl
// SPDX-License-Identifier: MIT AND Apache-2.0
// Copyright vis.gl contributors
// This file is derived from the Cesium code base under Apache 2 license
// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md
import { TILE3D_TYPE } from "../constants.js";
import { getMagicString } from "./helpers/parse-utils.js";
import { parsePointCloud3DTile } from "./parse-3d-tile-point-cloud.js";
import { parseBatchedModel3DTile } from "./parse-3d-tile-batched-model.js";
import { parseInstancedModel3DTile } from "./parse-3d-tile-instanced-model.js";
import { parseComposite3DTile } from "./parse-3d-tile-composite.js";
import { parseGltf3DTile } from "./parse-3d-tile-gltf.js";
// Extracts
export async function parse3DTile(arrayBuffer, byteOffset = 0, options, context, tile = { shape: 'tile3d' }) {
    tile.byteOffset = byteOffset;
    tile.type = getMagicString(arrayBuffer, byteOffset);
    switch (tile.type) {
        case TILE3D_TYPE.COMPOSITE:
            // Note: We pass this function as argument so that embedded tiles can be parsed recursively
            return await parseComposite3DTile(tile, arrayBuffer, byteOffset, options, context, parse3DTile);
        case TILE3D_TYPE.BATCHED_3D_MODEL:
            return await parseBatchedModel3DTile(tile, arrayBuffer, byteOffset, options, context);
        case TILE3D_TYPE.GLTF:
            return await parseGltf3DTile(tile, arrayBuffer, options, context);
        case TILE3D_TYPE.INSTANCED_3D_MODEL:
            return await parseInstancedModel3DTile(tile, arrayBuffer, byteOffset, options, context);
        case TILE3D_TYPE.POINT_CLOUD:
            return await parsePointCloud3DTile(tile, arrayBuffer, byteOffset, options, context);
        default:
            throw new Error(`3DTileLoader: unknown type ${tile.type}`); // eslint-disable-line
    }
}