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FSXA problem with backed ground poly

J

jfbrubaker1969

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52
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us-pennsylvania
So I created a bunch of single yellow line ground polys (gp_PatternedLines_40F) and they look fine (although I am experiencing alignment issues). I decided I wanted to change the lines to backed single yellow (gp_PatternedLines_Backed_40F). I compiled the airport but now all of the lines that I changed to single yellow backed show up as gray lines in FSX.

In the picture below, circle on the left shows single yellow (texture file: gp_PatternedLines_40F) and the backed single yellow (texture file: gp_PatternedLines_Backed_40F). The the single yellow shows up fine, the backed yellow shows as gray. The middle circle is a hold short line using texture file gp_PatternedLines_Backed_40F. The right circle shows how the ground poly isn't aligned with the auto generated centerline. The bottom portion of the picture shows how it looks in ADE (1.78)

L05 Ground Polys.png
 
There is no gp_PatternedLines_Backed_40F texture file in the default package, so I assume that this texture is not in your FS texture folder and thus is not being displayed. I guess untextured ground poly lines are plain gray.

The normal way to make a line with backing is to choose gp_PatternedLines_40F as a texture, and then select a different backing texture from the Backing Texture list.
 
That texture was installed with ADE 1.78 and it's one of the options. I did make sure that the texture file was copied to the FSX add-on folder. So, on a hunch, I drew a new ground poly with the gp_PatternedLines_Backed_40F texture, compiled the airport and now the lines are showing up properly. I guess maybe there's a slight glitch when existing ground poly textures are changed. Now all I need to figure out is why the ground poly's aren't aligning properly in FSX with the taxiway centerlines. Anyone got any ideas on that?
 
Your centerline in ADE (I assume it's a background image) is not aligned with the FSX centerline. Your ground poly line is clearly offset from the center of that taxiway. You can use the connection to draw the ground poly line directly on top of the ADE taxiway line. If you are already doing that then you will have to offset your ground poly lines from the ADE center lines.
 
You can clearly see in the below screen grab from ADE that the taxiway centerline (yellow), the ground poly (purple) and the background image are all aligned. I have drawn ground polys for a couple of other airports and have not had this problem with the taxiway centerlines and ground polys not aligning. I should also note that ALL of the GPs I have drawn for this airport have this alignment issue, it's almost like there's some kind of global offset or something. I'm attaching the ADE file if anyone wants to have a look.

L05 Ground Poly2.png
 

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OK, so I *think* I may have found the problem with the alignment. At one point I accidentally dragged the runway and in moving it back, I used the lat/long I found on the internet...it was accurate, but not as precise as the lat/long that FSX used (I don't know why I didn't think of opening the stock airport to get the right numbers). So now I need to know if there is a way for me to move *everything* at one time instead of dragging every single thing one at a time...
 
Got it figured out...but accidentally moving the runway has nothing to do with the ground poly alignment. Seems to be something happening during compilation.
 
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