Hi Obie:
The XML used to create a CVX vector flatten in your 6CA6 airport
*.AD4 file for a terrain area under your hangar using
ADE shows your requested "correct" elevation for vertex points:
<airportBounds>
<guid>
{47d48287-3ade-4fc5-8bec-b6b36901e612}
</guid>
<coordinates>
-120.485790895,38.325593134,
845.094
-120.485858139,38.325543164,
845.094
-120.485844881,38.325466862,
845.094
-120.48585445,38.325357736,
845.094
-120.485752366,38.325382721,
845.094
-120.485772907,38.325245753,
845.094
-120.485638575,38.325310393,
845.094
-120.485464552,38.325532641,
845.094
-120.485590073,38.325632586,
845.094
-120.485752401,38.325648367,
844.887
-120.485790895,38.325593134,
845.094
</coordinates>
</airportBounds>
This can be verified when
ADE compiles the CVX vector BGL, and one then de-compiles it to XML via
CvxExtractor:
<?xml version="1.0" encoding="utf-8"?>
<Vectors>
<VectorType name="AirportBounds">
<Vector TextureGuid="{47D48287-3ADE-4FC5-8BEC-B6B36901E612}" TextureName="Airport_Backgrounds_Flatten" FileOffsetHex="A4">
<QMID u="253" v="293" l="11" />
<Shapes>
<Shape Index="0" DrawType="Polygon" FileOffsetHex="B6">
<Points>
<Point Longitude="-120.48579454422" Latitude="38.3255910873413" Altitude="
845.093994140625" />
<Point Longitude="-120.485858917236" Latitude="38.325542807579" Altitude="
845.093994140625" />
<Point Longitude="-120.485851764679" Latitude="38.3254623413086" Altitude="
845.093994140625" />
<Point Longitude="-120.485858917236" Latitude="38.325355052948" Altitude="
845.093994140625" />
<Point Longitude="-120.485758781433" Latitude="38.3253818750381" Altitude="
845.093994140625" />
<Point Longitude="-120.485773086548" Latitude="38.3252424001694" Altitude="
845.093994140625" />
<Point Longitude="-120.485644340515" Latitude="38.3253067731857" Altitude="
845.093994140625" />
<Point Longitude="-120.485465526581" Latitude="38.325532078743" Altitude="
845.093994140625" />
<Point Longitude="-120.485594272614" Latitude="38.3256286382675" Altitude="
845.093994140625" />
<Point Longitude="-120.485758781433" Latitude="38.3256447315216" Altitude="
844.887023925781" />
<Point Longitude="-120.48579454422" Latitude="38.3255910873413" Altitude="
845.093994140625" />
</Points>
</Shape>
</Shapes>
</Vector>
</Vectors>
However, at run time in FS,
something is not 'allowing' your CVX vector "sloped" flatten with "correct" variable elevation for vertex points ...to be rendered at the assigned Altitude you requested.
Thus, your CVX vector "sloped" flatten with "correct" variable elevation for vertex points ...is instead being rendered at- or close to- the assigned 6CA6 airport Altitude of
874.776 Meters ...rather than at the 'flatten' Altitude you requested.
Because the terrain at 6CA6 is 'sloped',
you will have problems using a G-Poly (a uniformly 'flat'
and horizontally "level" 3D scenery object with a ground texture), so I recommend you consider an alternative to that option suggested by Tom.
I recommend that you
first resolve the terrain scenery issues preventing your CVX vector "sloped" flatten with "correct" variable elevation for vertex points ...from being rendered as it should.
The interfering factor may involve another co-existing CVX vector BGL
ex: from OrbX FTX NorCal.
Once you have fixed that, your CVX vector "sloped" flatten can precisely create a 'flat' and navigable surface from the hangar floor down to the RWY.
Your choice of CVX vector
terrain-mesh-clinging land class textures can then be draped onto the local ground surface
ex:
* Concrete in the hangar
..
and:
* Local 'ground' land class between the hangar and the RWY
Let me know if you wish to learn how to do this.
GaryGB