@loaders.gl/i3s/dist/lib/parsers/parse-i3s.js

i3s .

import { OrientedBoundingBox } from '@math.gl/culling';
import { Ellipsoid } from '@math.gl/geospatial';
import { load } from '@loaders.gl/core';
import { TILE_TYPE, TILE_REFINEMENT, TILESET_TYPE } from '@loaders.gl/tiles';
import I3SNodePagesTiles from "../helpers/i3s-nodepages-tiles.js";
import { generateTileAttributeUrls, getUrlWithToken, getUrlWithoutParams } from "../utils/url-utils.js";
import { I3SLoader } from "../../i3s-loader.js";
export function normalizeTileData(tile, context) {
    const url = context.url || '';
    let contentUrl;
    if (tile.geometryData) {
        contentUrl = `${url}/${tile.geometryData[0].href}`;
    }
    let textureUrl;
    if (tile.textureData) {
        textureUrl = `${url}/${tile.textureData[0].href}`;
    }
    let attributeUrls;
    if (tile.attributeData) {
        attributeUrls = generateTileAttributeUrls(url, tile);
    }
    const children = tile.children || [];
    return normalizeTileNonUrlData({
        ...tile,
        children,
        url,
        contentUrl,
        textureUrl,
        textureFormat: 'jpg', // `jpg` format will cause `ImageLoader` usage that will be able to handle `png` as well
        attributeUrls,
        isDracoGeometry: false
    });
}
export function normalizeTileNonUrlData(tile) {
    const boundingVolume = {};
    let mbs = [0, 0, 0, 1];
    if (tile.mbs) {
        mbs = tile.mbs;
        boundingVolume.sphere = [
            ...Ellipsoid.WGS84.cartographicToCartesian(tile.mbs.slice(0, 3)), // cartesian center of sphere
            tile.mbs[3] // radius of sphere
        ];
    }
    else if (tile.obb) {
        boundingVolume.box = [
            ...Ellipsoid.WGS84.cartographicToCartesian(tile.obb.center), // cartesian center of box
            ...tile.obb.halfSize, // halfSize
            ...tile.obb.quaternion // quaternion
        ];
        const obb = new OrientedBoundingBox().fromCenterHalfSizeQuaternion(boundingVolume.box.slice(0, 3), tile.obb.halfSize, tile.obb.quaternion);
        const boundingSphere = obb.getBoundingSphere();
        boundingVolume.sphere = [...boundingSphere.center, boundingSphere.radius];
        mbs = [...tile.obb.center, boundingSphere.radius];
    }
    const lodMetricType = tile.lodSelection?.[0].metricType;
    const lodMetricValue = tile.lodSelection?.[0].maxError;
    const type = TILE_TYPE.MESH;
    /**
     * I3S specification supports only REPLACE
     */
    const refine = TILE_REFINEMENT.REPLACE;
    return { ...tile, mbs, boundingVolume, lodMetricType, lodMetricValue, type, refine };
}
export async function normalizeTilesetData(tileset, options, context) {
    const url = getUrlWithoutParams(context.url || '');
    let nodePagesTile;
    let root;
    if (tileset.nodePages) {
        nodePagesTile = new I3SNodePagesTiles(tileset, url, options);
        root = await nodePagesTile.formTileFromNodePages(0);
    }
    else {
        const parseOptions = options.i3s;
        const rootNodeUrl = getUrlWithToken(`${url}/nodes/root`, parseOptions.token);
        // eslint-disable-next-line no-use-before-define
        root = await load(rootNodeUrl, I3SLoader, {
            ...options,
            i3s: {
                // @ts-expect-error options is not properly typed
                ...options.i3s,
                loadContent: false, isTileHeader: true, isTileset: false
            }
        });
    }
    return {
        ...tileset,
        loader: I3SLoader,
        url,
        basePath: url,
        type: TILESET_TYPE.I3S,
        nodePagesTile,
        // @ts-expect-error
        root,
        lodMetricType: root.lodMetricType,
        lodMetricValue: root.lodMetricValue
    };
}