MicroStation 2025 now supports Google Photorealistic 3D Tiles, allowing users to stream high‑resolution, city‑scale textured meshes directly into the design environment through the Geospatial Context workflow. This visualization‑only context data minimizes the need to manually model existing conditions, streamlining project setup and enabling teams to focus on design. In situations where project data such as a reality mesh, terrain model, or survey‑grade dataset must replace portions of the Google 3D content, the following steps outline how to apply masking on Google Photorealistic 3D tiles.

1. Create a 3D DGN file, assign the appropriate Coordinate Systems and turn on Google 3D. In this example, the file is called Abilene Google Ref.dgn. There’s nothing in the file except Google 3D being ON.



2. Now, in your main project file, in this example Abilene Data Center.dgn, draw a polygon defining the region that you want to clip or a fence if you want to mask a region. You can turn on Google Maps to help you properly locate the zone. For example:



3. Now, turn off Google Maps and attach in reference the file created in step 1. Use the Coincident World.



Once displayed, you can Clip of Mask the region, in this example, we want to mask the region in order to import a new Mesh from Bentley Reality Management Service.

The Mask tool require a Fence to be defined first. You can create a Fence (a Shape in this example) to define the area to be masked.



Then use the Mask Reference tool:




Google 3D will be masked within the zone:




You can now bring other data within this region. Like in this example, where a mesh, from Reality Management is referenced: