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FlightGear Scenery Designer: Difference between revisions
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FlightGear Scenery Designer (view source)
Revision as of 20:05, 25 September 2008
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''How fgsd works and what are the ideas that drive its design'' | ''How fgsd works and what are the ideas that drive its design'' | ||
The initial purpose of fgsd was to edit existing scenery because of the lack, at that time, of a decent free elevation model outside the USA. Releases up to 0.3.1 had capabilities to hand-edit part of the terrain. But it appeared to be cumbersome to edit triangles one at a time, and very frustrating as the work done on one tile was obsoleted every time a new global scenery was released. Moreover, editing the result of the TerraGear process proved to be non-trivial because of hidden gotchas on the topological quality of the tiles. | The initial purpose of fgsd was to edit existing scenery because of the lack, at that time, of a decent free elevation model outside the USA. Releases up to 0.3.1 had capabilities to hand-edit part of the terrain. But it appeared to be cumbersome to edit triangles one at a time, and very frustrating as the work done on one tile was obsoleted every time a new global scenery was released. Moreover, editing the result of the [[TerraGear]] process proved to be non-trivial because of hidden gotchas on the topological quality of the tiles. | ||
Finally, NASA and others released the SRTM digital elevation model that offers a more refined elevation dataset for most of the world, lessening the need to edit elevations manually. | Finally, NASA and others released the SRTM digital elevation model that offers a more refined elevation dataset for most of the world, lessening the need to edit elevations manually. | ||
From release 0.4.0 ( to be released ) ( and its pre-releases 0.3.9x - Win32 binaries available [ftp://ftp.ihg.uni-duisburg.de/FlightGear/Win32 here] - Other systems, use CVS ), fgsd no longer offers the ability to edit already made scenery tiles. Instead, it works interactively, using the same workflow as TerraGear. This workflow can be summarized as follow : | From release 0.4.0 ( to be released ) ( and its pre-releases 0.3.9x - Win32 binaries available [ftp://ftp.ihg.uni-duisburg.de/FlightGear/Win32 here] - Other systems, use CVS ), fgsd no longer offers the ability to edit already made scenery tiles. Instead, it works interactively, using the same workflow as [[TerraGear]]. This workflow can be summarized as follow : | ||
* load raw elevations | * load raw elevations | ||