In this setup we will be using the Level of Detail 2. This helps reduce memory when a large area is displayed.

Levels of Detail are primarily used in real time engines like the Tygron Platform to load the appropriate size model for the particular zoom level. 0 is the lowest resolution version of the model. Another important issue is the Levels of Detail that need to be setup. This consists of naming conventions and custom properties that need to be added to your model and Blender environment. There is a small setup needed in order to export your model succesfully to CityJSON. Click on the checkbox next to it to activate the exporter. After install the exporter will be available in the list. Click on 'Install' in the top right and select the zip file which you have downloaded.ĥ.

You can see a list of the add-ons which are available for Blender.Ĥ. In the preference dialog click on 'Add-ons'. Open Blender and go to Edit -> Preferences.ģ. Visit and download the zip file from the green Code dropdown menu on the right side.Ģ. Its functionality was further developed for the needs of their MSc thesis 'An integrative workflow for 3D city model versioning'.ġ.

This add-on was originally developed by Konstantinos Mastorakis (konmast3r) as part of a research orientation project for the MSc Geomatics programme of TU Delft. In order to export Blender models to CityJSON we first need to install the Up3date exporter and install it as an add-on in to Blender. To learn more about Blender visit or (software) Blender is the free and open source 3D creation suite. Therefore, this article deals with exporting a Blender model to CityJSON so that it can be imported into the Tygron Platform via the CityGML importer. Depending on your own processes, this might require you to export a model from Blender first. You can import a CityGML file into the Tygron Platform to evaluate 3d city designs.

Install blender gis