FSX My tunnel jumping up

[F70]

I have made some tunnels in my airport ENVA,from a distance they,they come out of the ground.
When i come closer they going back in the ground as normal.
Is there a way to avoid this?

Tunnel is up,in the middle of the picture.

Tunnel is normal

Jan

 

[gadgets]

Set the elevation of your tunnels absolutely(i.e., ASL), not AGL.

As the user aircraft gets further away from a flattened area, it averages adjacent poly elevations and displays larger polys. In your case, you have a few points belop ground but others at ground level. The average is half-way between, and the ground level rises. Unless you specify elevation AASL, so will your tunnels.

Don

 

[F70]

Sometime is it easy if you know it.
It happened only inside the flatten of the airport,the tunnels outside the flatten don't move.
Outside jumping to so i switch of AGL for the tunnels.
So i have un-tick the AGL and set it in my situation to 0.2 M and the tunnels don't jump anymore.

Thanks Don for the help,Jan

 

[connomar]

Hi Jan,

My attempts to get a flatten next to a taxiway have failed completely. Is the taxiway you have drawn ground poly's without using FSX taxiway protocol? I assume this could be done if AI aircraft are not part of the plan.

Martin

 

[F70]

Martin,

The taxiway is a normal taxiway for my airplane or AI airplanes.
I have made a small drawing as example.
If you have a airport with a flatten made by your self,then you can make a hole with the dimensions you want.
In my example the red color is the flatten 5,2 M
The green trapeziums are the walls with a slope,edit the individual points the corner on the red side need 5,2 M,the corner on the blue side is 0.2 M
And the bottom ,the blue rectangle is 0.2 M.

This is how it's works by me,if someone have a better workaround tell it.

Jan

 

[2wheelsup]

Jan,
I have tried your 'hole in the flatten' method, but I can't seem to make it work. I used airport background flatten mask class map for everything as shown in the example; airport flatten, bottom and sides with sloping sides.
Any idea what I am doing wrong?

Thanks,
Alan

 

[F70]

Alan,

I will try to explain step by step, my language is not English, so
Usually when I start with an airport i remove the flatten,Terrain Polygon > Exclude General > Airport Background,done by a small square.
Is it a third part airport i also remove the XXX_CVX.bgl ,start FSX and look what happened.
Then i draw a Flatten or a other Flatten Exclude this or that,it's what you need.
If you have the Flatten then you can make a hole in it,cut out a rectangle in the red from the picture above.
Have you the hole,rectangle or square it's what you need,then can you draw the rectangle the blue one,set this for example 5 M lower as the Flatten.
If this is done draw the trapeziums and set the Set Individual Points,the points ,vertex,by the red side they stay what are and by the blue side they are 5 M lower.

For clarity, draw the green and blue but not on top of the flatten but inside the Flatten.

I hope you can read this,and good luck,Jan

 

[robystar]

Hi,

And it would work even better if you would use triangles instead of trapeziums.

 

[F70]

Hi,

And it would work even better if you would use triangles instead of trapeziums.

Roby,

Yes I knew but I try it this way, I was a going a little mad that small triangles.

Jan

 

[robystar]

I know that it can amount to a lot of triangles sometimes, Jan, but through trial and error I learned that it is still the best way.
And it does not appear to affect the fps to the extent that it becomes noticeable on my (desktop) computer (i5, 8Gb Ram).

 

[GaryGB]

For some considerations regarding creation of sloped terrain flattens using "triangles" for potentially better FS run time:

* accuracy of terrain 'shape'

* scenery rendering performance

...as well as FS requirements for display of such detailed terrain scenery content with the precision which may have been intended by the author / developer, you may wish to review:

http://www.fsdeveloper.com/forum/threads/flattens.425495/page-2

Hope this helps !

GaryGB

 

[connomar]

Martin,

The taxiway is a normal taxiway for my airplane or AI airplanes.
I have made a small drawing as example.
If you have a airport with a flatten made by your self,then you can make a hole with the dimensions you want.
In my example the red color is the flatten 5,2 M
The green trapeziums are the walls with a slope,edit the individual points the corner on the red side need 5,2 M,the corner on the blue side is 0.2 M
And the bottom ,the blue rectangle is 0.2 M.

This is how it's works by me,if someone have a better workaround tell it.

Jan

View attachment 20917

Thanks Jan,

I will have to play for some time, but the idea of punching a hole in your own flatten hadn't occurred to me.

Thanks for you help.

 

[2wheelsup]

Alan,


If you have the Flatten then you can make a hole in it,cut out a rectangle in the red from the picture above.

Thanks Jan,
Now if I can figure out how to cut the hole in my flatten.

Alan

 

[2wheelsup]

Must have some secret scissors that I can't find...
How do you cut a hole in a flatten?

Thanks,
Alan

 

[F70]

Alan,

I have moved my flatten vertex a little and open the flatten a little so you can see how it's work.

Good luck,Jan

 

[2wheelsup]

Ahh... Looks like there are 2 or more flattens placed close together and I just add extra vertices in them to look like a 'hole' in the flatten. That is kind of what I thought of trying next when I couldn't find the scissors.

Thanks,
Alan