29 lines
772 B
JavaScript
29 lines
772 B
JavaScript
|
define([
|
||
|
|
'./addToArray',
|
||
|
|
'../../Core/defined'
|
||
|
|
], function(
|
||
|
|
addToArray,
|
||
|
|
defined) {
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds an extension to gltf.extensionsUsed if it does not already exist.
|
||
|
|
* Initializes extensionsUsed if it is not defined.
|
||
|
|
*
|
||
|
|
* @param {Object} gltf A javascript object containing a glTF asset.
|
||
|
|
* @param {String} extension The extension to add.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
function addExtensionsUsed(gltf, extension) {
|
||
|
|
var extensionsUsed = gltf.extensionsUsed;
|
||
|
|
if (!defined(extensionsUsed)) {
|
||
|
|
extensionsUsed = [];
|
||
|
|
gltf.extensionsUsed = extensionsUsed;
|
||
|
|
}
|
||
|
|
addToArray(extensionsUsed, extension, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
return addExtensionsUsed;
|
||
|
|
});
|