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scttgs0 2023-03-27 00:05:40 -05:00
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README
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@ -4,7 +4,7 @@ TerraGear Scenery Tools README
TerraGear is a collection of tools for building scenery for the TerraGear is a collection of tools for building scenery for the
FlightGear project. Generally, the process is done in two steps: FlightGear project. Generally, the process is done in two steps:
1. Preprocess the original raw data. This chops up the data into 1. Preprocessing the original raw data. This chops up the data into
the FG tiling scheme and saves it in a simple, intermediate the FG tiling scheme and saves it in a simple, intermediate
format. format.
@ -12,8 +12,8 @@ FlightGear project. Generally, the process is done in two steps:
assemble them into a 3d model of the terrain. assemble them into a 3d model of the terrain.
There is currently no graphical front end for these tools so you will There is currently no graphical front end for these tools so you will
need to run them from the command line. Be prepaired, when building need to run them from the command line. Be prepared, when building
scenery on a world wide scale, be prepaired to burn through multiple scenery on a world wide scale, be prepared to burn through multiple
gigabytes of disk space and days or weeks of crunching. Building gigabytes of disk space and days or weeks of crunching. Building
smaller chunks is much more doable though. smaller chunks is much more doable though.
@ -133,18 +133,18 @@ is currently working on.
- You can start in midstream using the --start-id=KABC option to genapts. - You can start in midstream using the --start-id=KABC option to genapts.
- If you get a consistant crash on a particular airport, you probably - If you get a consistent crash on a particular airport, you probably
found a bug in genapts, or there is some degenerate information at that found a bug in genapts, or there is some degenerate information at that
airport (40 mile long runways, 2 runways spaced miles apart, etc.) airport (40 mile long runways, 2 runways spaced miles apart, etc.)
Often you can fix the data and proceed. Sometimes you can "nudge" Often you can fix the data and proceed. Sometimes you can "nudge"
things around to get past a genapts bug. For instance, if you crahs things around to get past a genapts bug. For instance, if you crash
consistantly on a valid looking runway, try nudging the heading or consistently on a valid looking runway, try nudging the heading or
position by a least significant digit. Sometimes we can get numerical position by a least significant digit. Sometimes we can get numerical
problems with the polygon cliper and this often works around it. problems with the polygon clipper and this often works around it.
Other considerations: Other considerations:
- Airport generation pre-depends on terrain data being preped and ready - Airport generation pre-depends on terrain data being prepared and ready
so airport surfaces can be built properly. so airport surfaces can be built properly.
- If you prep new terrain data, you should probably rerun the airport - If you prep new terrain data, you should probably rerun the airport
@ -176,7 +176,7 @@ Processing Radio Tower data
I found some very detailed, very complete, very current radio tower I found some very detailed, very complete, very current radio tower
data from the FCC. This even includes cell phone towers and data from the FCC. This even includes cell phone towers and
individual hobbiest towers. However it only has USA coverage: individual hobbyist towers. However it only has USA coverage:
http://wireless.fcc.gov/cgi-bin/wtb-datadump.pl http://wireless.fcc.gov/cgi-bin/wtb-datadump.pl