
Hello everyone,
This is to announce my first plugin for WW. It imports the data of the IGN Géoportail into WorldWind, so one can make use of the high resolution imagery on the whole French territory. It is the first version so there are still quite a few problems:
- It is a bit slow
- The correspondance between the scale and the level (in the Geoportail sense) is not perfect: Some high-detail-level tiles are loaded too soon, and the horizon of view is not deep enough.
- Tiles at the East and South limits are not taken care of: in this case, the Geoportail service does not send the whole 384x384 tiles but a tile smaller than that. It concerns only Corsica, so it is not that bad.
- Some tiles are downloaded only after multiple tries, but I am still not sure if it comes from the Geoportail service (the dreaded Unavailable Service) or from some other problem. It sometimes happens with the Geoportail website itself, but seemingly not as often as with the plugin.
- The only data currently is from metropolitan France but adding other territories should not be very difficult (although finding the right projection parameters can be sometimes challenging)
Anyway, apart from that, it seems to work ok :-) and I hope to solve at least some of these deficiencies this week. Note that I started programming the plugin by modifying the VE Plugin, so any resemblance with the latter is not accidental.
You can download the code for the plugin there. It has been tested with WW 1.3.5 only and it should be considered highly experimental at this point... To install it, you just have to unzip it in the WW root directory: It will create a GeoportailPlugin directory inside the Plugin directory and copy the sources of the plugin there, as well as copy the proj.dll file at the WW root. Then the plugin should be compiled and initialized automatically when launching World Wind. However, you will have to load it explicitly (with Plug-Ins > Load/Unload...) from the interface in order to use it.
The screenshot above is somewhere near Annecy, using the Aerial view layer. Below, is a place nearby, with the Scan layer:

guilhem
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