Hello:
Steve Greenwood's new web page URL for direct download of the most current version of "FST-Flatten" is:
fst.stevemg.net/downloads/fstutilities.zip
FYI: As Jim Vile alluded to in his latter post above, flattens need NOT always be "square"; rather they are made up of multiple smaller FS terrain grid "squares" to create a shape with an edge that upon closer inspection, is actually 'aliased' with varying degrees of precision or 'jaggedness', depending on several factors.
How "aliased" the FS terrain LOD quad matrix grid 'fall-back' rendering of the requested shape / size (defined by your vertex Lat/Lon coordinates) will be, is determined by how many LOD Quad Area Points may be available to resolve the requested shape and size of a flatten polygon area at FS run time.
How many LOD Quad Area Points may be available to resolve the requested shape and size of a flatten polygon for an area of interest at FS run time is determined by:
1.) FS2004
terrain mesh BGL compiled internal LOD Resolution installed / active with priority of display for local flight area
2.) FS2004 GUI
Terrain Mesh Complexity slider (100%=most precise)
3.) FS9.Cfg file parameter "
TERRAIN_MAX_VERTEX_LEVEL (aka "TMVL")
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For example, if one wishes to render one's "custom flatten shape" with the
best precision, and at the
maximum resolution FS9 can display (which is LOD-11 or 19.2 Meters between FS terrain mesh elevation data points ...aka LOD Quad "Area Points" ...as one's effective set of available terrain 'grid' vertices): :spushpin:
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1.) FS2004 terrain mesh BGL compiled internal LOD Resolution must be at least "
19.2 Meters"
2.) FS2004 GUI Terrain Mesh Complexity slider must be "
100%"
3.) FS9.Cfg file "TMVL" parameter is [LOD-11 + 10] = 21 ...and therefore must be "
TERRAIN_MAX_VERTEX_LEVEL=21"
Hope this helps !
GaryGB