About this app
Introduction
If you are looking for a seamless and efficient way to import 3D city models into Autodesk Revit, then the CityJSON Importer plugin is a must-have tool for you. This plugin is specifically designed to work with CityJSON files, which are a JSON-based encoding for 3D city models and an official standard of the Open Geospatial Consortium (OGC).

(Image by: 3Dgeoinfo @ TU Delft)
Features
The CityJSON Importer plugin offers a range of powerful features that make importing and working with CityJSON files in Revit a breeze. One of the key features of this plugin is its ability to reproject and translate imported data to match the coordination referencing system (CRS) and metadata of the CityJSON file. This ensures that your imported city models are accurately placed within the Revit environment.
Another great feature of the CityJSON Importer plugin is its flexibility in handling site location updates. Users have the option to choose whether to update the Revit site location based on the CityJSON file location or to keep it as is. This level of control allows users to work with imported city models in a way that best suits their needs.
When importing CityJSON files, the plugin generates CityJSON geometries as generic models in Revit. It also sets attributes on elements at both the child and parent levels as shared parameters, making it easy to access and modify key information about the imported city models. Additionally, if a CityJSON file contains multiple levels of detail (LODs), such as 3D BAG, the plugin allows users to generate models at the level of detail that they specify.

(Image by: 3Dgeoinfo @ TU Delft)
Customization
One of the standout features of the CityJSON Importer plugin is its ability to customize materials assigned to elements based on their CityJSON object types. This customization can be done directly within Revit's "Material Editor" panel, giving users the flexibility to create visually stunning city models that accurately reflect the attributes of the imported CityJSON files.

(Image by: 3Dgeoinfo @ TU Delft)
Conclusion
The CityJSON Importer plugin for Revit is a powerful and versatile tool that streamlines the process of importing 3D city models into the Revit environment. With its range of features, including CRS translation, site location updates, LOD generation, and material customization, this plugin offers users the flexibility and control they need to work efficiently with CityJSON files. If you work with 3D city models and use Revit as your platform of choice, the CityJSON Importer plugin is a must-have tool that will enhance your workflow and help you create stunning city models with ease.

(Image by: 3Dgeoinfo @ TU Delft)