Add existing to tracked

node_modules/@cesium/engine/Source/Workers/upsampleVerticesFromCesium3DTilesTerrain.js

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+import Cesium3DTilesTerrainGeometryProcessor from "../Core/Cesium3DTilesTerrainGeometryProcessor.js";
+import createTaskProcessorWorker from "./createTaskProcessorWorker.js";
+
+/**
+ * @private
+ * @param {Cesium3DTilesTerrainGeometryProcessor.UpsampleMeshOptions} options An object describing options for mesh upsampling.
+ * @param {ArrayBuffer[]} transferableObjects An array of buffers that can be transferred back to the main thread.
+ * @returns {TerrainMeshProxy} An object containing selected info from the upsampled TerrainMesh.
+ */
+
+function upsampleVerticesFromCesium3DTilesTerrain(
+  options,
+  transferableObjects,
+) {
+  const mesh = Cesium3DTilesTerrainGeometryProcessor.upsampleMesh(options);
+
+  const verticesBuffer = mesh.vertices.buffer;
+  const indicesBuffer = mesh.indices.buffer;
+  const westIndicesBuffer = mesh.westIndicesSouthToNorth.buffer;
+  const southIndicesBuffer = mesh.southIndicesEastToWest.buffer;
+  const eastIndicesBuffer = mesh.eastIndicesNorthToSouth.buffer;
+  const northIndicesBuffer = mesh.northIndicesWestToEast.buffer;
+
+  transferableObjects.push(
+    verticesBuffer,
+    indicesBuffer,
+    westIndicesBuffer,
+    southIndicesBuffer,
+    eastIndicesBuffer,
+    northIndicesBuffer,
+  );
+
+  /** @type {TerrainMeshProxy} */
+  const result = {
+    verticesBuffer: verticesBuffer,
+    indicesBuffer: indicesBuffer,
+    vertexCountWithoutSkirts: mesh.vertexCountWithoutSkirts,
+    indexCountWithoutSkirts: mesh.indexCountWithoutSkirts,
+    encoding: mesh.encoding,
+    westIndicesBuffer: westIndicesBuffer,
+    southIndicesBuffer: southIndicesBuffer,
+    eastIndicesBuffer: eastIndicesBuffer,
+    northIndicesBuffer: northIndicesBuffer,
+    minimumHeight: mesh.minimumHeight,
+    maximumHeight: mesh.maximumHeight,
+    boundingSphere: mesh.boundingSphere3D,
+    orientedBoundingBox: mesh.orientedBoundingBox,
+    horizonOcclusionPoint: mesh.horizonOcclusionPoint,
+  };
+  return result;
+}
+
+export default createTaskProcessorWorker(
+  upsampleVerticesFromCesium3DTilesTerrain,
+);