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D-ECHO Caribbean scenery edit?

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Re: D-ECHO Caribbean scenery edit?

Postby D-ECHO » Sun Jul 07, 2019 3:39 pm

Notice how it is not completely cut into it, the thresholds are relatively level with the rest of the terrain. For more exact informations on how the elevation calculation works, you'd need to ask someone more familiar with genapts's internals
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Re: D-ECHO Caribbean scenery edit?

Postby wkitty42 » Sun Jul 07, 2019 3:46 pm

you have to understand how the scenery generator code works... basically it goes like this greatly simplified flow...

1. generate the base scenery mesh
2. locate the airport and gather the data for the outside boundry
3. cut a hole in the scenery mesh at the median elevation of the airport
4. place the airport in the hole

so if you have a runway like at XBEL in Hawaii (check it out with the UFO), it does not follow the actual slope of the hill unless the slope parameter is specified and it is large enough to allow the runway/airport to follow the terrain elevation changes... if the slope parameter is not large enough, you will get ravines where the land is higher and you will get steps/cliffs where the land is lower...
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Sun Jul 07, 2019 6:46 pm

I can edit hgt files now, clumsily. I'll try to get the airport boundary "bulldozed" to the correct gradient.

Edit: Here is the first try at "bulldozing" St Barth. Let me know how it looks so I can edit it if it needs it.
http://www.prolectron.com/flightgear/N17W063.hgt
I may have to take the grading another 90 meters west.

You might want to save your current N17W063.hgt file. I don't know if there is high-res (30 meter res) available in that area, but if your hgt file is significantly larger than 3MB, you might have a hi-res hgt file. I used a 90 meter resolution file for this.

The area in the red rectangle is what I changed.
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Tue Jul 09, 2019 9:09 am

Let me know if that hgt file change worked ok. If you need it GZipped, I can do that for you.

I would like to test this on my computers, but TerraGear will not install on a 64 bit Ubuntu system. Very frustrating. I tried the download_and_compile.sh script, and it failed in a couple places. The first fail I got to work. The second still fails.
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Re: D-ECHO Caribbean scenery edit?

Postby D-ECHO » Tue Jul 09, 2019 2:04 pm

This does look pretty well! Please test it, it's on git now :D
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Tue Jul 09, 2019 2:06 pm

D-ECHO wrote in Tue Jul 09, 2019 2:04 pm:This does look pretty well! Please test it, it's on git now :D

Arrgh! I have an appointment this morning. It will be a few hours before I can test it. I CAN'T WAIT!!
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Tue Jul 09, 2019 5:50 pm

That is GREAT! I just checked it out and all seems pretty close to the real St Barth. I'm going to try an approach in a few minutes.

Thanks mucho! :)

Edit after approach: OH BABY! OH BABY! OOOHHHH!!! It was good for me! Do we smoke now? ;)

If you are up to it, I'd like to bulldoze Saba TNCS. The modified hgt file is here. Back up your original of course!
http://www.prolectron.com/flightgear/N17W064.hgt

I just landed at Saba, and it is much better. All is in perspective now. You can use my grade update or not.
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Re: D-ECHO Caribbean scenery edit?

Postby D-ECHO » Wed Jul 10, 2019 12:42 pm

Thank you for the changes! Saba is up as well now, with your new elevations :)
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Wed Jul 10, 2019 1:03 pm

Thanks again!

I buzzed around Saba with the UFO, and it looks really good, except it partially buried the ramp guy and his truck. I don't care about details like that as long as the runway and ramps are as realistic as possible.

I'll have to wait again to try an approach, landing, and takeoff.

Edit: All seems fine. St Barth and Saba both great improvements.
There is one thing that needs improvement, and that is the airport file for Saba. I can't start at that airport. It puts me out in a field with no way to get to the runway.
If that is my hgt file, it still needs a little work.

I modified the file and uploaded it if you want to try Saba again.
http://www.prolectron.com/flightgear/N17W064.hgt
The change is the size of the little peninsula on which the airport is located. I extended the land 90 meters on both the approach and departure end, and the gradient is extended as well.

My flight this morning was great! TNCM -> TFFJ -> TNCS -> TNCE -> TKPK -> TKPN -> TRPG -> TFFR
Thanks again! Your contribution is not going unnoticed.
P.S. If you are wondering if I can build a custom island, the answer appears to be yes. Anybody interested in flying to Shangri-La? Atlantis?
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Sun Jul 14, 2019 2:06 pm

In my wanderings yesterday, I discovered a Twin Otter on the runway at Marie Galante TFFM.
Image
There are two other misplaced aircraft there, but they are not on the runway.
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Re: D-ECHO Caribbean scenery edit?

Postby WoodSTokk » Sun Jul 14, 2019 3:11 pm

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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Sun Jul 14, 2019 3:21 pm

I know it also! With the stock scenery, its tail is almost sticking out onto the runway. Now it is there.
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Re: D-ECHO Caribbean scenery edit?

Postby D-ECHO » Mon Jul 15, 2019 2:11 pm

removed from git and requested deletion at the scenery website
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Re: D-ECHO Caribbean scenery edit?

Postby SurferTim » Mon Jul 15, 2019 9:37 pm

D-ECHO : Thanks for all you have done! I really enjoy your scenery.

I have a beta version app written with Python that I can edit low-res hgt files (elevation data) relatively easily now. If you are interested in getting a hgt file modified, let me know.
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Re: D-ECHO Caribbean scenery edit?

Postby statto » Wed Jul 17, 2019 8:34 pm

I'm interested in the HGT script.
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