55 lines
1.9 KiB
JavaScript
55 lines
1.9 KiB
JavaScript
import ContentMetadata from "./ContentMetadata.js";
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import defaultValue from "../Core/defaultValue.js";
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import defined from "../Core/defined.js";
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import hasExtension from "./hasExtension.js";
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import oneTimeWarning from "../Core/oneTimeWarning.js";
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/**
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* Check if a content has metadata, either defined in its metadata field (3D Tiles 1.1) or in
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* the <code>3DTILES_metadata</code> extension. If defined, get the content metadata
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* with the corresponding class.
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*
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* @function
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*
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* @param {Cesium3DTileset} tileset The tileset to query for content metadata
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* @param {object} contentHeader the JSON header for a {@link Cesium3DTileContent}
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* @return {ContentMetadata} the content metadata, or <code>undefined</code> if not found
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* @private
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* @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.
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*/
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function findContentMetadata(tileset, contentHeader) {
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const metadataJson = hasExtension(contentHeader, "3DTILES_metadata")
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? contentHeader.extensions["3DTILES_metadata"]
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: contentHeader.metadata;
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if (!defined(metadataJson)) {
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return undefined;
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}
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if (!defined(tileset.schema)) {
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findContentMetadata._oneTimeWarning(
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"findContentMetadata-missing-root-schema",
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"Could not find a metadata schema for content metadata. For tilesets that contain external tilesets, make sure the schema is added to the root tileset.json."
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);
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return undefined;
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}
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const classes = defaultValue(
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tileset.schema.classes,
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defaultValue.EMPTY_OBJECT
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);
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if (defined(metadataJson.class)) {
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const contentClass = classes[metadataJson.class];
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return new ContentMetadata({
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content: metadataJson,
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class: contentClass,
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});
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}
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return undefined;
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}
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// Exposed for testing
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findContentMetadata._oneTimeWarning = oneTimeWarning;
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export default findContentMetadata;
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