FlightGear Newsletter November 2010: Difference between revisions

FlightGear Newsletter November 2010 (view source)

Revision as of 16:34, 24 November 2010

538 bytes added , 24 November 2010

TerraGear-CS - refinement

Martin.spott

116

edits

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 === TerraGear-CS ===
-Over the past year, some effort has been expended into investigations, experiments, tests (including bug-reports for related software ....) for replacing the current polygon processing in TerraGear by the use of [http://grass.osgeo.org/ GRASS GIS]. The GRASS toolbox provides almost all the features we need for ''reliable'', topologically correct polygon handling (cleaning, clipping and the like). Those (early) parts of the toolchain which have proven to be rather stable are available [http://mapserver.flightgear.org/git/?p=terragear-cs;a=tree;f=gisscripts here].
+After attempts to provide a new World Scenery build in sync with the 2.0 software release failed miserably (due to software deficiencies), some effort has been expended into investigations, experiments (some of which ended up in filing bug-reports for related software) and large-scale tests for replacing the entire polygon processing in TerraGear by the use of [http://grass.osgeo.org/ GRASS GIS]. Just to give an idea about the term "large scale": The procedure to turn the Europe-wide CORINE CLC2000 vector data set into a topologically consistent coverage is taking several weeks on a 3 GHz Xeon machine.
+The "*-decode" commands and old-style work directories are affected by this change as well as all polygon-mangling routines in "construct". The GRASS toolbox provides all the features we need for ''reliable'', topologically correct polygon handling (cleaning, clipping and the like). Those (early) steps of the new toolchain which have proven to be rather stable are available [http://mapserver.flightgear.org/git/?p=terragear-cs;a=tree;f=gisscripts here] (GRASS7 required for certain features).
 == Aircraft of the month ==