How do I find the highest terrain point on a celestrial body?

[Xyphos]

I'm trying to programically determine the 'low orbit' of a body, which is 10km above the highest surface peak or above it's atmosphere, which ever is greater.

but, I don't know how to [quickly] find the highest terrestrial point. anyone know?

Edited July 17, 2017 by Xyphos

[Benjamin Kerman]

Try this: 

 

[Xyphos]

7 minutes ago, Benjamin Kerman said:

Try this: 

nope, I'm not getting the distance from the active vessel, I'm computing the highest point of a celestrial body

[nascarlaser1]

If your looking for it for stock planets the wiki tells you.

[Xyphos]

nevermind, I've decided to simply add 20Km from sea-level radius, as nothing (I know of) will even reach that high, and only 10Km for bodies with atmospheres.

[HebaruSan]

I used CelestialBody.atmosphereDepth or CelestialBody.minOrbitalDistance, depending on whether there's an atmosphere:

• https://github.com/HebaruSan/Astrogator/blob/master/src/KerbalTools.cs#L170-L177

 

[Aelfhe1m]

That shou

14 minutes ago, Xyphos said:

nevermind, I've decided to simply add 20Km from sea-level radius, as nothing (I know of) will even reach that high, and only 10Km for bodies with atmospheres.

That should work for stock and similarly sized planet packs but may not cover every eventuality (especially in real scale systems - highest "mountains" in the real life solar system are 22km on Vesta and 20km on Iapetus don't know if these are reflected in RSS).

Haven't tested in game but did you look at CelestialBody.getBounds().max ?

Edited July 17, 2017 by Aelfhe1m

[Xyphos]

13 minutes ago, HebaruSan said:

I used CelestialBody.atmosphereDepth or CelestialBody.minOrbitalDistance, depending on whether there's an atmosphere:

• https://github.com/HebaruSan/Astrogator/blob/master/src/KerbalTools.cs#L170-L177

 

Ah, that should work, thanks! 

 

6 minutes ago, Aelfhe1m said:

That shou

That should work for stock and similarly sized planet packs but may not cover every eventuality (especially in real scale systems - highest "mountains" in the real life solar system are 22km on Vesta and 20km on Iapetus don't know if these are reflected in RSS).

Haven't tested in game but did you look at CelestialBody.getBounds().max ?

good point, and IDK about getBounds.

[Aelfhe1m]

17 minutes ago, HebaruSan said:

I used CelestialBody.atmosphereDepth or CelestialBody.minOrbitalDistance, depending on whether there's an atmosphere:

• https://github.com/HebaruSan/Astrogator/blob/master/src/KerbalTools.cs#L170-L177

 

Out of curiosity, any idea what that gives for Gilly? I ask because the science low space threshold is lower than the highest elevation making getting low orbital science something you need to be careful about (or only do while also landing).

[Xyphos]

14 minutes ago, Aelfhe1m said:

Out of curiosity, any idea what that gives for Gilly?

 

snippet from my code:

{
                const double addedAltitude = 10000;

                Name = body.bodyName;
                GeeASL = body.GeeASL * G;
                Selected = body.isHomeWorld;// Name.Equals("Kerbin");

                var R = body.Radius + (body.atmosphere ? body.atmosphereDepth : body.minOrbitalDistance) + addedAltitude;
                var C = Math.PI * (R * R);
                Log("R: {0}", R);
           }

 

and the output from my debug log:

Gilly     G=0.0490667567239553
R: 680000

 

[Aelfhe1m]

8 minutes ago, Xyphos said:

R: 680000

Err, is that maybe a mistype? Because Gilly's SOI (according to the wiki) is only 126km.

[HebaruSan]

13 minutes ago, Aelfhe1m said:

Err, is that maybe a mistype? Because Gilly's SOI (according to the wiki) is only 126km.

Yeah, that looks like the value for Kerbin to me. 600000 radius + 70000 atmosphere + 10000 padding = 680000.

[Xyphos]

R: 56000
Gilly     G=0.0490667567239553

yeah, that was a mis-paste   the R goes before the body name... (body name is logged outside the constructor...)

[DMagic]

The FinePrint.Utilities.CelestialUtilities class has a method for this: GetHighestPeak(CelesitalBody body).

It should give you what you need, though it doesn't tell you anything about the atmosphere, that would have to be considered separately.

[OhioBob]

Nevermind.

Edited July 18, 2017 by OhioBob