32 lines
918 B
JavaScript
32 lines
918 B
JavaScript
define([
|
|
'./addExtensionsUsed',
|
|
'./addToArray',
|
|
'../../Core/defined'
|
|
], function(
|
|
addExtensionsUsed,
|
|
addToArray,
|
|
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.
|
|
*
|
|
* @private
|
|
*/
|
|
function addExtensionsRequired(gltf, extension) {
|
|
var extensionsRequired = gltf.extensionsRequired;
|
|
if (!defined(extensionsRequired)) {
|
|
extensionsRequired = [];
|
|
gltf.extensionsRequired = extensionsRequired;
|
|
}
|
|
addToArray(extensionsRequired, extension, true);
|
|
addExtensionsUsed(gltf, extension);
|
|
}
|
|
|
|
return addExtensionsRequired;
|
|
});
|