feat: add Cesium semantic inspection mode

scripts/compress-glb.js

@@ -144,13 +144,31 @@ function writeCompressedMetadata(sourceMetadata, outputGlb, outputMetadata) {
   const metadata = JSON.parse(fs.readFileSync(sourceMetadata, "utf8"));
   const glbName = path.basename(outputGlb);
   metadata.asset = glbName;
-  metadata.assets = [{
-    id: "main",
-    label: "Compressed Scene",
-    type: "model",
-    url: glbName,
-    enabled: true,
-  }];
+  const assets = Array.isArray(metadata.assets) ? metadata.assets : [];
+  const main = assets.find((asset) => asset.id === "main");
+  metadata.assets = assets.length
+    ? assets.map((asset) => asset.id === "main" ? {
+      ...asset,
+      label: "Compressed Scene",
+      url: glbName,
+      enabled: true,
+    } : asset)
+    : [{
+      id: "main",
+      label: "Compressed Scene",
+      type: "model",
+      url: glbName,
+      enabled: true,
+    }];
+  if (!main && assets.length) {
+    metadata.assets.unshift({
+      id: "main",
+      label: "Compressed Scene",
+      type: "model",
+      url: glbName,
+      enabled: true,
+    });
+  }
   if (typeof metadata.cesium_js === "string") {
     metadata.cesium_js = metadata.cesium_js.replace(
       /url: '[^']+\.glb'/,
@@ -270,9 +288,13 @@ function main() {
   }
 }
 
-try {
-  main();
-} catch (error) {
-  console.error(error.message);
-  process.exit(1);
+if (require.main === module) {
+  try {
+    main();
+  } catch (error) {
+    console.error(error.message);
+    process.exit(1);
+  }
 }
+
+module.exports = { writeCompressedMetadata };