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Howto:Add shared models manually: Difference between revisions
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Howto:Add shared models manually (view source)
Revision as of 22:17, 5 December 2009
, 5 December 2009updated link, some corrections
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=== Step 5 === | === Step 5 === | ||
In CVS there is a perl program called calc-tile.pl that works out what stg file a geodetic coordinate falls in. You can get it here if you don't feel like playing with CVS and don't have the CVS branch installed : http://cvs.flightgear.org/ | In CVS there is a perl program called calc-tile.pl that works out what stg file a geodetic coordinate falls in. You can get it here if you don't feel like playing with CVS and don't have the CVS branch installed: http://cvs.flightgear.org/viewvc/source/scripts/perl/scenery/calc-tile.pl?revision=HEAD Run the perl script in a terminal window passing it the longitude and latitude that you wrote down in step 4. You'll probably have to install perl first if you run on a MS OS's. Example : | ||
paul@localhost scenery?$ ./calc-tile.pl -55.5 30.3 | paul@localhost scenery?$ ./calc-tile.pl -55.5 30.3 | ||
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Add the following lines to the stg file replacing the parameters with your own : | Add the following lines to the stg file replacing the parameters with your own : | ||
OBJECT_SHARED Models/MyModels/foomodel.xml -55.5 30.3 1000.0 0.00 | OBJECT_SHARED Models/MyModels/foomodel.xml -55.5 30.3 1000.0 0.00 | ||
The format is : OBJECT_SHARED | The format is: ''OBJECT_SHARED relative_path_to_model_xml_file LON LAT ALTITUDE_above_wgs84 ellipsoid_ROTATION''. If you have no XML file, just specify the path to your model. | ||
=== Step 8 === | === Step 8 === | ||
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|} | |} | ||
About Altitude. Looking at the files shipped with FG, there are some strange, to me, figures for altitude. Some are negative numbers. That seems odd, since objects are being placed on the surface. It suggests that above surface may be negative on the Z axis. COMMENT : Much more likely these are objects which are purposely sunk into the terrain to adjust their height. | About Altitude. Looking at the files shipped with FG, there are some strange, to me, figures for altitude. Some are negative numbers. That seems odd, since objects are being placed on the surface. It suggests that above surface may be negative on the Z axis. COMMENT: Much more likely these are objects which are purposely sunk into the terrain to adjust their height. | ||
I ran across a comment: 3D object need scenery to compute their height. This is why scenery must be associated with an existing land surface file (whatever you call it). | I ran across a comment: 3D object need scenery to compute their height. This is why scenery must be associated with an existing land surface file (whatever you call it). | ||