Combining GCS and ECEF Coordinate Systems in iTwinJS

[zhang-zimin]

One model uses a Geographic Coordinate System (GCS), while the other only supports Earth-Centered, Earth-Fixed (ECEF) coordinates. How can they be integrated using a Tile Provider in iTwinJS?

[ben-polinsky]

Hi,

If you could provide more details on your workflow, that would be helpful.

Usually, models are synchronized into an iModel using various connectors. Currently, during this process the iModel will use the CRS/GCS from the first model synchronized which contains one. (We're adding the ability to manually select a CRS, soon.) Additional data will be re-reprojected to the CRS set.