import hasExtension from "./hasExtension.js";
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/**
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* Check if a content has a <code>3DTILES_metadata</code> extension, and if so,
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* look up the group from the <code>3DTILES_metadata.groups</code> object.
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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 group metadata
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* @param {Object} contentHeader the JSON header for a {@link Cesium3DTileContent}
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* @return {GroupMetadata} the group 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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export default function findGroupMetadata(tileset, contentHeader) {
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if (hasExtension(contentHeader, "3DTILES_metadata")) {
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var extension = contentHeader.extensions["3DTILES_metadata"];
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var groupId = extension.group;
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return tileset.metadata.groups[groupId];
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}
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return undefined;
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}
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