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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | 3584x 3584x 3483x 101x 78x 78x 23x 23x 23x 23x 1x | import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import hasExtension from "./hasExtension.js";
import TileMetadata from "./TileMetadata.js";
import oneTimeWarning from "../Core/oneTimeWarning.js";
/**
* Check if a tile has metadata, either defined in its metadata field (3D Tiles 1.1)
* or in the <code>3DTILES_metadata</code> extension. If defined, get the tile metadata
* with the corresponding class.
* <p>
* This assumes that tileset.metadata has been created before any tiles are constructed.
* </p>
* @function
*
* @param {Cesium3DTileset} tileset The tileset to query for tile metadata
* @param {object} tileHeader the JSON header for a {@link Cesium3DTile}
* @return {TileMetadata} the tile metadata, or <code>undefined</code> if not found
* @private
* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
*/
function findTileMetadata(tileset, tileHeader) {
const metadataJson = hasExtension(tileHeader, "3DTILES_metadata")
? tileHeader.extensions["3DTILES_metadata"]
: tileHeader.metadata;
if (!defined(metadataJson)) {
return undefined;
}
if (!defined(tileset.schema)) {
findTileMetadata._oneTimeWarning(
"findTileMetadata-missing-root-schema",
"Could not find a metadata schema for tile metadata. For tilesets that contain external tilesets, make sure the schema is added to the root tileset.json.",
);
return undefined;
}
const classes = tileset.schema.classes ?? Frozen.EMPTY_OBJECT;
Eif (defined(metadataJson.class)) {
const tileClass = classes[metadataJson.class];
return new TileMetadata({
tile: metadataJson,
class: tileClass,
});
}
return undefined;
}
// Exposed for testing
findTileMetadata._oneTimeWarning = oneTimeWarning;
export default findTileMetadata;
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