I am trying to display a b3dm model at a particular position on the globe. I can get it to work if I use a local 0-centered coordinate system for the model and then transform it to the correct position using the transformation matrix in tileset.json.
However, when I position the model geographically (using ECEF coordinates) in the b3dm file, the model doesn't show. When using this approach, I use an identity matrix as transformation matrix and use ECEF coordinates to define the bounding sphere (which does show up at the right location).
As I would prefer to use the latter way of working, any assistance would be very much appreciated.
Both approaches are available here: