When I originally added ground-use support to TerraGear many years ago, the Canada/US Great Lakes worked fine: we simply treated the water as a special ground use, used the DEM to get the elevation, clipped it against the VMAP0 coastlines, and for good measure, Curt had written code to average out the elevation of water areas to remove bumps, etc. The surface of Lake Superior or Lake Ontario might be a few feet high or low, but it was pretty hard to notice.
Then, just before I left the project, something got badly broken in TerraGear and/or its input datasets: it changed so that any water connected to the ocean was forced down to sea level, although the real-life surfaces are as high as 600 ft MSL. Now, Chicago sits perched atop cliffs hundreds of feet high overlooking Lake Michigan, and rivers run through (non-existant) fjords. I think someone originally had a grandiose plan to build a water network, and wanted eventually to model locks, rapids, waterfalls, etc. to account for changes in water surface elevation, but that never happened, and to be honest, we should never have let the code into production until it worked. Now, quite a few years later, the Great Lakes are still broken in our default scenery, and as a result, FlightGear looks ridiculous to any new user who comes and tries flying in near cities such as Toronto, Rochester, Buffalo, Cleveland, Detroit, Chicago, or Milwaukee. Is there any reason that we can't restore the old code, and treat inland water like a (specially flattened) land use, at least until someone fixes the newer water-network code? Is there anything else we can do to address this problem? Were we forced into this because of different GIS datasets? Thanks, and all the best, David ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
