Add existing to tracked

node_modules/@cesium/engine/Source/Scene/InstanceAttributeSemantic.js

@@ -0,0 +1,81 @@
+import Check from "../Core/Check.js";
+
+/**
+ * An enum describing the built-in instance attribute semantics.
+ *
+ * @enum {string}
+ *
+ * @private
+ */
+const InstanceAttributeSemantic = {
+  /**
+   * Per-instance translation.
+   *
+   * @type {string}
+   * @constant
+   */
+  TRANSLATION: "TRANSLATION",
+
+  /**
+   * Per-instance rotation.
+   *
+   * @type {string}
+   * @constant
+   */
+  ROTATION: "ROTATION",
+
+  /**
+   * Per-instance scale.
+   *
+   * @type {string}
+   * @constant
+   */
+  SCALE: "SCALE",
+
+  /**
+   * Per-instance feature ID.
+   *
+   * @type {string}
+   * @constant
+   */
+  FEATURE_ID: "_FEATURE_ID",
+};
+
+/**
+ * Gets the instance attribute semantic matching the glTF attribute semantic.
+ *
+ * @returns {InstanceAttributeSemantic} The instance attribute semantic, or undefined if there is no match.
+ *
+ * @private
+ */
+InstanceAttributeSemantic.fromGltfSemantic = function (gltfSemantic) {
+  //>>includeStart('debug', pragmas.debug);
+  Check.typeOf.string("gltfSemantic", gltfSemantic);
+  //>>includeEnd('debug');
+
+  let semantic = gltfSemantic;
+
+  // Strip the set index from the semantic
+  const setIndexRegex = /^(\w+)_\d+$/;
+  const setIndexMatch = setIndexRegex.exec(gltfSemantic);
+  if (setIndexMatch !== null) {
+    semantic = setIndexMatch[1];
+  }
+
+  switch (semantic) {
+    case "TRANSLATION":
+      return InstanceAttributeSemantic.TRANSLATION;
+    case "ROTATION":
+      return InstanceAttributeSemantic.ROTATION;
+    case "SCALE":
+      return InstanceAttributeSemantic.SCALE;
+    case "_FEATURE_ID":
+      return InstanceAttributeSemantic.FEATURE_ID;
+  }
+
+  return undefined;
+};
+
+Object.freeze(InstanceAttributeSemantic);
+
+export default InstanceAttributeSemantic;