I haven't tried it to bend to any desired terraforming other than flattening but I presume it applies too.
It does. It will use your specified curve of the rectangle. Also very glad that this was told here
Any other question that is not specific to an aspect of development or tool can be posted in the General chat forum.
By following these guidelines we make sure that the forums remain easy to read for everybody and also that the right people can find your post to answer it.
I haven't tried it to bend to any desired terraforming other than flattening but I presume it applies too.

Hi, I have a problem with a sloped runway. It has a sharp uneven surface in the middle which doesn't show up unless the package is built and imported into the game. When AI plane takes off, it bounces of because of that. How can I make a sloped runway completely smooth?

Yes, I did flatten the area with a polygon object. Thank you for the advice.did you use the flatten option for the whole airport area? If yes, dont do this.
If not, select a rectangle and place it right below the runway and adjust the altitude of the runway, with the teraforming option.

Follow up: It kinda worked. I had to place multiple rectangles to make it seamless.. anyways, AI pilot still struggles to takeoff on a sloped runway. I guess it's just a bad AI logic.did you use the flatten option for the whole airport area? If yes, dont do this.
If not, select a rectangle and place it right below the runway and adjust the altitude of the runway, with the teraforming option.


Well.. it may be a compiling problem exporting a wrong/bugged file.Maybe I will ask my question here instead of opening a new topic, since it kinda relates to your problems.
I am also fixing a small grass airfield, that is really badly represented by default.
The main problem is that the whole surface area is full with actual hills, while in reality it's completely flat. Bad default mesh, I guess.
In the editor I placed a big polygon over the whole area to flatten it, which works well. Until I build the package and load it into the sim.
Then the terraforming is simply not there, also all the other (object and vegetation) exclusions are not working either. Everything else, all the placed custom objects are shown, but the polygons are not working.
As if the polygons are not included in the scenery when I build it.
Any ideas what am I doing wrong here?

Just wanted to write an update, when I saw your reply.Well.. it may be a compiling problem exporting a wrong/bugged file.
Try increasing the priority/preference number of the polygon to see if it works

Good to knowJust wanted to write an update, when I saw your reply.
The solution was in fact that all my polygons were at priority 0. After I gave them priority 1 to 4, all the polygons are built in the scenery correctly. Also, I ticked the box "flatten" at the airport properties, but I don't know if it did anything in fact.