gltf-pipeline/lib/usesExtension.js

Content pipeline tools for optimizing glTF assets.

"use strict";
const Cesium = require("cesium");

const defined = Cesium.defined;

module.exports = usesExtension;

/**
 * Checks whether the glTF uses the given extension.
 *
 * @param {object} gltf A javascript object containing a glTF asset.
 * @param {string} extension The name of the extension.
 * @returns {boolean} Whether the glTF uses the given extension.
 *
 * @private
 */
function usesExtension(gltf, extension) {
  return (
    defined(gltf.extensionsUsed) && gltf.extensionsUsed.indexOf(extension) >= 0
  );
}