How would I increase the top of the atmosphere?

[thereaverofdarkness]

I want to raise the atmospheric cutoff altitude around planets so that the air actually thins out to almost nothing before dropping to vacuum. I want Kerbin atmosphere to go all the way out almost to 100km, without changing the atmosphere density at any existing point. So I'm not trying to change the pressure at sea level, and not trying to change the scale height. Just the point at which it cuts to vacuum.

Anyone know how I can do this?

edit:

At 70km, Kerbin atmosphere would be 84,250 nanopascals. At 100km, it would be about 0.2088 nanopascals. My guess is that it cuts off at exactly 100 micropascals, and I'd prefer it cut off at a nanopascal.

edit 2:

After some calculations, I realize it cuts off at 101.326 millipascals, exactly 1/1,000,000th of sea level pressure. I want it to cut off at 1/100,000,000th of sea level pressure.

Edited December 24, 2014 by thereaverofdarkness

[wasmic]

You might want to look into using the RealSolarSystem plugin. It allows atmosphere scaling and could probably do what you want.

[NathanKell]

When using legacyAtmosphere code, KSP is hardcoded to cut things off when at 1e-6 sea level. To get around that, use a pressureCurve (RSS can do that for you).

[camlost]

Funny thing that in beta phase there're still so many 'legacy' things

[thereaverofdarkness]

Maybe I can change the hardcode to cut it off at 1e-8? I should just need to know where that bit of information is stored in the game data and edit the line.

Edited December 28, 2014 by thereaverofdarkness

[thereaverofdarkness]

Anyone know where the code is to set the atmospheric cutoff?

[ferram4]

There is no way to change that. Hardcoded means, "you can't change that." Your only solution is to somehow edit the game's dlls to make it not hardcoded or hardcoded to a different value, but then you run into sections of modding that may or may not be banned by the rules, depending on how you do it.