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Howto:Create custom terrain

809 bytes added, 07:40, 7 January 2011
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Look Custom terrain in FlightGear is currently generated through processing shapefiles with [[TerraGear]]. In order to add custom scenery to FlightGear, you must create a custom shapefile. A "shapefile" is a proprietary spatial information format. You can edit them with almost every GIS package. QGIS is quite a good package for this type of project. Your goal for editing area data is to create a shapefile of a seamless layer of polygons which correspond to some type of land cover. This data is then fed into the mapserver and, possibly, TerraGear to create new scenery. ===Evaluating the current data===Before you begin, please make sure the area you want to improve doesn't already have good coverage. Just because it looks bad in FlightGear does not mean the area has not been improved. For this, you will need to check the Flightgear Mapserver, at [http://wwwmapserver.flightgear.org/forums/viewtopicmapserver.php?f=5&t=2147 hereflightgear.org] an example of the achievable result.
Let's take a look at the Finistère in Brittany, Western France: if you click [http://mapserver.flightgear.org/map/?lon=-4.41840585539649&lat=48.4484146908477&zoom=11&layers=0B000000FTTFFFFFTFT here], you will quickly see and understand how the Finistère county is known of [[FlightGear]]. Some towns/cities (red), a few forests (green), etc. Overall, it is not a very good resolution: a lot of angles, the detail level is not that good, some towns are missing. If you want a better definition on ground, there is some work to be done! The goal being to obtain something like this:

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