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* All the scenery is flat and at sea-level. Typically this is because you didn't include any elevation data in your tg-construct command. Make sure there's a STRM-3 directory included in the command-line. | * All the scenery is flat and at sea-level. Typically this is because you didn't include any elevation data in your tg-construct command. Make sure there's a STRM-3 directory included in the command-line. | ||
* All terrain copies the material of a certain shapefile. You have probably forgotten to put each of the downloaded shapefiles in a seperate directory inside the Data/shapefiles directory. | * All terrain copies the material of a certain shapefile. You have probably forgotten to put each of the downloaded shapefiles in a seperate directory inside the Data/shapefiles directory. | ||
== General comments from forum discussion == | |||
{{cquote|f-ojac, you are right, the parameters used in scenery 2.0 were "-e 5 -x 20000" according to the wiki. I don't know why I had the impression these parameters were not public. In any case, it does not matter because using the same parameters will create closer results, but they are not guaranteed to be the same. | |||
The parameters used to create scenery 2,0 seem to be: | |||
-m ??: the minimum number of vertices in a tile. In FG, any number bellow 100 (and probably, any number below 1000) will do. I don't think there is any surface on the world perfectly flat for several kilometers. The default value is 50 and I'm sure is ok for any normal use. | |||
-e 5: the max allowed error for elevation, in meters. That is: if terrafit calculates a simplification of the terrain where all points are at most this distance from the real elevation, no more vertices are created. The default value is 40 meters: a point may have an elevation error up to 40m (~100ft) High values for this parameter create less detailed mountains and smaller (in disk size) and more efficient (in FPS) terrain. | |||
-x 20000: the max number of vertices in a tile. If this number of vertices is reached, terrafit stop regardless the max error of the vertices. The default value is 1000 | |||
Keep in mind you can set values that do not make sense: | |||
* "-e 1 -x 100" does not make sense because it is going to be impossible to calculate errors less than 1 meters using only 100 vertices. The max number of vertices will be reached always and the max error will be probably ignored. | |||
* "-e 300 -x 20000" does not make sense, tiles are going to use for sure much less vertices than 20,000 because you are allowing huge elevation errors. | |||
If you want an efficient scenery (less vertices), use the default values "-e 40 -x 1000". If you want more accurate elevation at the cost of disk space and FPS, use values similar to scenery 2.0 ("-e 5 -x 20000") Anything in the middle will produce performance and disk use in the middle.<ref>{{cite web |url=http://forum.flightgear.org/viewtopic.php?f=5&t=24681#p225363 | |||
|title=Re: Terrasync Help (surprinsingly!) :) | |||
|author=ludomotico |date= Mon Nov 24, 2014 4:28 am}}</ref>|ludomotico}} | |||
<references/> | |||
== Related content == | == Related content == | ||