初始化

src/gltf2glb/addToArray.js

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+'use strict';
+const Cesium = require('cesium');
+
+const defaultValue = Cesium.defaultValue;
+
+module.exports = addToArray;
+
+/**
+ * Adds an element to an array and returns the element's index.
+ *
+ * @param {Array} array The array to add to.
+ * @param {Object} element The element to add.
+ * @param {Boolean} [checkDuplicates=false] When <code>true</code>, if a duplicate element is found its index is returned and <code>element</code> is not added to the array.
+ *
+ * @private
+ */
+function addToArray(array, element, checkDuplicates) {
+    checkDuplicates = defaultValue(checkDuplicates, false);
+    if (checkDuplicates) {
+        const index = array.indexOf(element);
+        if (index > -1) {
+            return index;
+        }
+    }
+
+    array.push(element);
+    return array.length - 1;
+}