Problem New D3D9 Flattening issue

BenSisko

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I'm working with Gattispilot on updating Moonbase Alpha for Orbiter 2016 D3D9 and we're having an issue with surface flattening at the crater Plato. Of the 5 Moonbase pads, Pads 1 & 2 appear below MSL. With the following .flt file for the location:

Ellipse -2520 -9.3 51.599998 1000 1000 0 0
Ellipse -2520 -9.3199357 51.5878504 1000 1000 0 0

Moonbase Alpha is correctly rendered on a flat surface.
Moonbase Alpha.jpg

But pads 1 & 2 appear like this.

Pad glitch 4.jpg

As you see, the apparent floor is perhaps 0.6 meter above the pad's floor. No height editing of the .flt file seems to have any effect on the relative elevation of the pad's floor. Only disabling terrain flattening under the advanced video tab in the launchpad results in the correct render. How can I "fix" the .flt file so all 5 pads are rendered correctly? Thanks in advance for your help.
Pad glitch 10.jpg
 

Buck Rogers

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Tile resolution has an impact on flattening accuracy ( raise the height by 200m or so and you'll see). Either higher level tiles, or the best workaround I've found so far is simply to make the flat area MUCH larger than presumed (also note that the center of your flat may not be where you think it is because of the res.)
 
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