MSFS TIN exclusion Polygon

[Christian Bahr]

Hi all,

i need some help

I am struggling with a problem and the problem is called Vector Data. On an airfield (EDIU) that I am working on there is a polygon with the property that it excludes the TIN below.

The properties of the polygon: noTin airport airportSize=XS

The debug mode shows that it is a polygon from the FS base: fs-base

The result is that my high-resolution 1m LIDAR Mesh does not come into play. The question that naturally arises is how to remove this polygon.

I am grateful for any help

 

[GaryGB]

Hi Christian:

Sorry, I do not have a "quick fix" for excluding the MSFS default airport flatten at this moment.

I do instead, have a few comments and questions as to how you plan to "terra-form" and blend this airport within your LiDAR data set.


IIUC, you refer to this airport, which exists in MSFS, but not legacy versions of FS:

Segelfluggelände Hengsen-Opherdicke – Wikipedia

de.wikipedia.org

GeoHack - Segelfluggelände Hengsen-Opherdicke

geohack.toolforge.org

The EDIU RWYs IRL have a substantial slope downhill to the NE.

However, the MSFS default EDIU CVX vector Airport Boundary 'flatten' polygon:

[MSFS-2020_Packages_install path]\Official\OneStore\fs-base\scenery\0601\CVX5013.BGL


...when extracted to ESRI *.SHP via Patrick Germain's CvxExtractor, and then 'Appended' to SBuilderX, has:

* A assigned GUID {00000000-0000-0000-0000-000000000000} Vector Polygon Type-3 value: "Exclude_All_Terrain_Items"

* An assigned Altitude value of 0 Meters AMSL


...which IIUC, allows MSFS' internally-assigned attributes to determine:

* AB Polygon Texture

...and:

* RWY flattening (default is ARP elevation)


AFAIK, many airports in MSFS have been configured this way (to reduce workload making RWYs sloped along their axis ?)


IRL, grass RWYs are 'rolled' intensively to flatten the surface for aircraft wheels, even though RWYs may be sloped end-to-end.

This is particularly true with RWYs for Gliders, which may have smaller wheel diameters and relatively fragile construction


1 Meter LiDAR may create a rather "bumpy" surface for gliders to navigate.

Do you intend to "smooth" those sloped RWY surfaces ?

If so, do you also intend to enable A.I. / Ground Traffic which can actually operate on the sloped RWYs ?


You may note that currently one must decide either to make terrain polys in ADE_Alpha20 or MSFS SDK GUI

https://www.fsdeveloper.com/forum/t...the-air-terraform-question.451036/post-871022


If you were to create a terrain polygon in ADE you would see these options:

IIRC, the MSFS SDK GUI presents a similar set of options via its dialog boxes.


Since this scenario may likely involve terra-forming to impose a slope for your RWYs, I shall refer you initially to this info:


https://www.fsdeveloper.com/forum/threads/question-about-scenery-poly-exclude-all.452582/

https://www.fsdeveloper.com/forum/threads/problem-creating-airport-on-rough-land.449073/page-2

https://www.fsdeveloper.com/forum/threads/thoughts-on-modelling-a-large-non-flat-airport.450254/

https://docs.flightsimulator.com/html/index.htm#t=Content_Configuration/Environment/Airports_And_Facilities/Airport_Definition_Properties.htm&rhsearch=applyFlatten&rhhlterm=applyflatten

https://docs.flightsimulator.com/html/index.htm#t=Developer_Mode/Scenery_Editor/Objects/Rectangle_Objects.htm#h&rhsearch=sloped runway&rhhlterm=slope runway runways

I hope this info may help initially with planning your approach to the terrain configuration at this airfield.

GaryGB

 

[Christian Bahr]

Hi Garry, you can always be relied on

I think I got a little closer to the problem. As it currently looks, it is not due to the described polygon that excludes the TIN. It seems to be due to the runway, because if I play something with the parameters there, then my terrain is shown to me as it should be displayed.

The airfield should have a runway with a natural gradient, so it should not be flat. I am currently doing the main work of the airport attributes with the help of the MSFS built-in scenery editor. However, I have already downloaded and installed the latest version of the Airport Design Editor. There I had loaded the stock data of the MSFS for EDIU to see which files would be suitable for an error analysis. However, I did not get any further there.

Maybe it is a little more complicated than I suspected at the beginning when I wrote the LADAR data directly into the profile of the runway. Or it is the terraforming parameter of the runway itself that is causing the error. I am now experimenting a little further and when the occasion arises, I will report that here.

Thank you again for your assistance

 

[GaryGB]

Hi Gary, you can always be relied on

I think I got a little closer to the problem. As it currently looks, it is not due to the described polygon that excludes the TIN. It seems to be due to the runway, because if I play something with the parameters there, then my terrain is shown to me as it should be displayed.

The airfield should have a runway with a natural gradient, so it should not be flat. I am currently doing the main work of the airport attributes with the help of the MSFS built-in scenery editor. However, I have already downloaded and installed the latest version of the Airport Design Editor. There I had loaded the stock data of the MSFS for EDIU to see which files would be suitable for an error analysis. However, I did not get any further there.

Maybe it is a little more complicated than I suspected at the beginning when I wrote the LiDAR data directly into the profile of the runway. Or it is the terraforming parameter of the runway itself that is causing the error. I am now experimenting a little further and when the occasion arises, I will report that here.

Thank you again for your assistance

Ah yes, I think I recall now, how I did this months ago ...thanks to your mention of 'RWY parameters'.

IIRC, setting a "Transparent" attribute for the RWY 'should' allow the underlying terrain mesh shape to be displayed properly.


In ADE_20 Alpha-20 HF3 GUI:

ADE Menu > Lists > Runways > select: RWY # > [Edit] button > Properties > {Runway} tab > check: Transparency checkbox > [OK] button


In MSFS SDK:

https://docs.flightsimulator.com/html/index.htm#t=Developer_Mode/Scenery_Editor/Objects/Runway_Objects.htm

"The following options will be applied to the surface material, as well as any further materials you use (as explained below):

• Transparent​

  Checking this will make the runway materials transparent so they won't be rendered in the scene, although the runway will still be valid and usable. Also note that even when a runway is flagged as transparent, its Markings will still be rendered."

https://docs.flightsimulator.com/html/index.htm#t=Content_Configuration/Environment/Airports_And_Facilities/Runway_Definition_Properties.htm&rhsearch=runway transparent&rhhlterm=runway runways transparent

Attribute	Description	Type	Required

transparent

Make the runway surface transparent (TRUE) or not (FALSE).

Boolean

No

GaryGB

 

[Kelvin Richardson]

Ah yes, I think I recall now, how I did this months ago ...thanks to your mention of 'RWY parameters'.

IIRC, setting a "Transparent" attribute for the RWY 'should' allow the underlying terrain mesh shape to be displayed properly.


In ADE_20 Alpha-20 HF3 GUI:

ADE Menu > Lists > Runways > select: RWY # > [Edit] button > Properties > {Runway} tab > check: Transparency checkbox > [OK] button


In MSFS SDK:

https://docs.flightsimulator.com/html/index.htm#t=Developer_Mode/Scenery_Editor/Objects/Runway_Objects.htm

"The following options will be applied to the surface material, as well as any further materials you use (as explained below):

• Transparent​

  Checking this will make the runway materials transparent so they won't be rendered in the scene, although the runway will still be valid and usable. Also note that even when a runway is flagged as transparent, its Markings will still be rendered."

https://docs.flightsimulator.com/html/index.htm#t=Content_Configuration/Environment/Airports_And_Facilities/Runway_Definition_Properties.htm&rhsearch=runway transparent&rhhlterm=runway runways transparent

Attribute	Description	Type	Required

transparent

Make the runway surface transparent (TRUE) or not (FALSE).

Boolean

No

GaryGB

You're a legend Gary! Selflessly offering detailed support over the years. I just wanted to pop my head in and value your contribution. I have learnt alot from your knowledge sharing.

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[GaryGB]

Many thanks for your kind words.

GaryGB

 

[Kelvin Richardson]

Many thanks for your kind words.

GaryGB

You are most welcome.

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