Loading large city models requires intelligent data management and loading structures, especially in the case of Virtual London where the model now extends to over 2000 Km in extent. To manage the data, Richard Milton here at CASA has written a KML file to use the Network Link function of KML and Level of Detail to intelligently load in Google Earth files depending on the users’ viewpoint. The movie below demonstrates this tile loading ability:
All of London’s 33 Boroughs are included in the file structure allowing a seamless flythough of the 3D data. Due to ongoing licensing issues this will only currently be available on computer systems run internally within the Boroughs – but it provides an insight into how the work is progressing…
*Update – see also post on Splicing Landmark Buildings and Network Streaming –
A higher resolution version of the movie can be downloaded here (39Mb WMV)
Hofmanesque!