[3d] better solution to support reading extra resource/texture (#4209)

src/extensions/core/load3d/Load3DConfiguration.ts

@@ -128,6 +128,9 @@ class Load3DConfiguration {
       if (!value) return
 
       const filename = value as string
+
+      this.setResourceFolder(filename)
+
       const modelUrl = api.apiURL(
         Load3dUtils.getResourceURL(
           ...Load3dUtils.splitFilePath(filename),
@@ -173,6 +176,21 @@ class Load3DConfiguration {
       }
     }
   }
+
+  private setResourceFolder(filename: string): void {
+    const pathParts = filename.split('/').filter((part) => part.trim())
+
+    if (pathParts.length <= 2) {
+      return
+    }
+
+    const subfolderParts = pathParts.slice(1, -1)
+    const subfolder = subfolderParts.join('/')
+
+    if (subfolder) {
+      this.load3d.node.properties['Resource Folder'] = subfolder
+    }
+  }
 }
 
 export default Load3DConfiguration