cesium
Version:
CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.
29 lines (27 loc) • 936 B
JavaScript
define([
'./addExtensionsUsed',
'../../Core/defined'
], function(
addExtensionsUsed,
defined) {
'use strict';
/**
* Adds an extension to gltf.extensionsRequired if it does not already exist.
* Initializes extensionsRequired if it is not defined.
*
* @param {Object} gltf A javascript object containing a glTF asset.
* @param {String} extension The extension to add.
*/
function addExtensionsRequired(gltf, extension) {
var extensionsRequired = gltf.extensionsRequired;
if (!defined(extensionsRequired)) {
extensionsRequired = [];
gltf.extensionsRequired = extensionsRequired;
}
if (extensionsRequired.indexOf(extension) < 0) {
extensionsRequired.push(extension);
}
addExtensionsUsed(gltf, extension);
}
return addExtensionsRequired;
});