#principia on 2020-05-10 — irc logs at esper.irclog.whitequark.org

2019-12-26 20:29 raptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Fréchet. We currently target 1.5.1, 1.6.1, and 1.7.x. <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly… | <egg> also 4e16 m * 2^-52 is uncomfortably large

00:01 <discord-_> Kobymaru. — What's the great NathanKell up to these days?

00:01 <discord-_> Kobymaru. — working on a game, right?

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01:06 <_whitenotifier-d13c> [Principia] eggrobin labeled issue #2542: API Request: query the history - https://git.io/JfI69

01:06 <_whitenotifier-d13c> [Principia] eggrobin labeled issue #2144: Extending the external API to allow for interaction with flight planning - https://git.io/fjsM0

01:06 <_whitenotifier-d13c> [Principia] eggrobin labeled issue #2074: An API to get geopotential coefficients for analytic perturbation theories - https://git.io/fhQfk

01:11 <_whitenotifier-d13c> [Principia] eggrobin commented on issue #2542: API Request: query the history - https://git.io/JfWmk

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06:09 <_whitenotifier-d13c> [Principia] guoraymon starred Principia - https://git.io/JfWGO

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12:24 <_whitenotifier-d13c> [Principia] eggrobin opened pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

12:29 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

12:31 <discord-_> egg. — @Sir Mortimer so back when I designed the external API in February-March of 2019, I designed it so it would be easy to use with C# `dynamic`, and then I noticed that this required a .NET framework newer than KSP’s

12:31 <discord-_> egg. — but since 1.8, you should be able to use `dynamic`, so the Principia external API should be fairly lightweight to use!

12:32 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

12:32 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4268/

12:32 <discord-_> egg. — (unless you target 1.7)

12:33 <discord-_> egg. — Speaking of 1.7/1.8 @sarbian, the 1.4 GCMonitor build seems to have finally be broken by that update

12:34 <discord-_> egg. — Speaking of 1.7/1.8 @sarbian, the 1.4 GCMonitor build seems to have finally been broken by that update (edited)

12:34 <discord-_> sarbian. — I most likely need to redo the unity asset. I'll try to summon the will

12:34 <discord-_> egg. — ah right, that makes sense

12:35 <discord-_> egg. — how are things down south

12:36 <discord-_> sarbian. — Boring. To make things worse some low life had some fun with Orange fiber and I was out of internet connection (fiber and 4G) for 3 days.

12:36 <discord-_> egg. — ow

12:37 <discord-_> egg. — I had an internetless day back in March but they resolved it quite quickly

12:38 <discord-_> egg. — (it may have been a bad idea to keep working via tethering on a swiss data package though)

12:38 <discord-_> sarbian. — <https://actu.fr/ile-de-france/ivry-sur-seine_94041/charenton-ivry-maisons-alfort-une-panne-reseaux-orange-dans-plusieurs-villes-val-marne_33443126.html>

12:38 <discord-_> sarbian. — Ah ah

12:42 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4268/

12:46 <discord-_> Sir Mortimer. — @egg it’s good, we unapologetically dropped all backward compatibility anyways. 1.8+ only.

12:46 <discord-_> egg. — OK

12:46 <discord-_> egg. — @Sir Mortimer I will rewrite the API doc to show example usages with dynamic, it is much much much nicer than doing it purely by reflection

12:47 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfWuw

12:47 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfWuo

12:47 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfWuK

12:47 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfWu6

12:47 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfWuP

12:54 <discord-_> Sir Mortimer. — Nice 🙂

12:54 <_whitenotifier-d13c> [Principia] eggrobin reviewed pull request #2564 commit - https://git.io/JfWuh

13:21 <_whitenotifier-d13c> [Principia] eggrobin reviewed pull request #2564 commit - https://git.io/JfWg1

13:27 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

13:27 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

13:27 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4269/

13:36 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4269/

13:53 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfW2K

13:53 <_whitenotifier-d13c> [Principia] pleroy reviewed pull request #2564 commit - https://git.io/JfW26

13:55 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

13:57 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

13:57 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4270/

14:01 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

14:03 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

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14:06 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

14:07 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

14:14 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

14:15 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

14:15 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4271/

14:15 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4272/

14:15 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4272/

14:15 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4273/

14:31 <discord-_> Sir Mortimer. — hmm... so I'll be the first to use a Principia API?

14:31 <discord-_> egg. — yes

14:31 <discord-_> egg. — this is eggsciting

14:31 <discord-_> egg. — also I should probably test it a bit,

14:31 <discord-_> Sir Mortimer. — 🙃

14:31 <discord-_> DRVeyl. — Nah, testing it is SM's role!

14:31 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4273/

14:32 <discord-_> Sir Mortimer. — I'll probably throw a wad of cah at my computer first, tho. It desperately needs a RAM upgrade.

14:32 <discord-_> Sir Mortimer. — I'll probably throw a wad of cash at my computer first, tho. It desperately needs a RAM upgrade. (edited)

14:33 <discord-_> egg. — well, since it takes one synodic period of the moon to fix bugs we should try to get it right

14:33 <discord-_> egg. — (though I suppose @Sir Mortimer could build the adapter locally and fetch the mac continuous build from azure to test it once I check it in)

14:33 <discord-_> Sir Mortimer. — no worries, a finalized principia release will be out before KC anyway

14:37 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

14:39 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

14:39 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4274/

14:55 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4274/

15:01 <_whitenotifier-d13c> [Principia] eggrobin synchronize pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

15:03 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

15:03 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4275/

15:05 <_whitenotifier-d13c> [Principia] pleroy opened pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

15:06 <_whitenotifier-d13c> [Principia] pleroy edited pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

15:07 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

15:20 <_whitenotifier-d13c> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4275/

15:20 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4276/

15:28 <_whitenotifier-d13c> [Principia] pleroy labeled pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

15:38 <discord-_> Sir Mortimer. — Meanwhile...

15:38 <discord-_> Sir Mortimer. — https://cdn.discordapp.com/attachments/480397772248580098/709066771965149294/image0.jpg

15:43 <discord-_> Sir Mortimer. — I likethat steamer 🙂

15:44 <discord-_> Sir Mortimer. — I like that steamer 🙂 (edited)

15:46 <_whitenotifier-d13c> [Principia] eggrobin labeled pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

15:48 <_whitenotifier-d13c> [Principia] eggrobin closed pull request #2564: Get rid of ApparentBubble - https://git.io/JfWEc

15:48 <_whitenotifier-d13c> [Principia] eggrobin pushed 10 commits to master [+0/-0/±41] https://git.io/JfWri

15:48 <_whitenotifier-d13c> [Principia] eggrobin 2c51a6f - Get rid of ApparentBubble

15:48 <_whitenotifier-d13c> [Principia] eggrobin 200c7af - fix motions

15:48 <_whitenotifier-d13c> [Principia] eggrobin ab939ec - after pleroy’s review

15:48 <_whitenotifier-d13c> [Principia] ... and 7 more commits.

15:48 <_whitenotifier-d13c> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=695

15:48 <_whitenotifier-d13c> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=696

15:48 <_whitenotifier-d13c> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=695

15:49 <_whitenotifier-d13c> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=696

15:55 <discord-_> egg. — @Sir Mortimer hm, I suppose you want to give us planetocentric latitude and longitude in degrees, not radians?

15:55 <discord-_> Sir Mortimer. — yes

15:56 <discord-_> egg. — OK, seems like a common enough convention that we can do it

15:57 <discord-_> Sir Mortimer. — it's what you get from waypoints and vessels, so it seems to be the natural choice.

15:57 <discord-_> egg. — an alternative would be for our API to take strings with a unit, maybe that would be more explicit

15:57 <discord-_> egg. — (we have a unit parser already)

15:58 <discord-_> egg. — but then we are really not set up to return that, and you definitely don’t want to parse units on your side, so I guess let’s just keep interchanging floating-point numbers

15:59 <discord-_> Sir Mortimer. — yup. parsing seems a bit overkill in this case.

15:59 <discord-_> egg. — yeah, we do it for the config files but that is a wider audience too

16:00 <discord-_> egg. — https://github.com/mockingbirdnest/Principia/blob/master/astronomy/trappist_gravity_model.cfg#L2-L21

16:01 <discord-_> egg. — we should probably change those deg to °, we used to have a stupid ASCII-only restriction to strings in interchange structs because of marshalling tricks but this has been resolved

16:02 <discord-_> DRVeyl. — Parsing when you're expecting multiple calls doesn't seem right versus just specifying your expected units and ... expect people to only mess up their dimensional analysis a few times before getting it right.

16:04 <discord-_> DRVeyl. — (ie parsing from configs sounds good, parsing when SM wants info about orbital parameters, less so.)

16:04 <discord-_> egg. — yeah, at least at the levels of paranoia that are appropriate here; if this were an interface between systems on, say, a Mars orbiter designed to study the climate of mars, I might recommend a more cautious approach :-p

16:04 <discord-_> egg. — yeah, at least at the levels of paranoia that are appropriate here; if this were an interface between systems on, say, an orbiter designed to study the climate of Mars, I might recommend a more cautious approach :-p (edited)

16:05 <discord-_> DRVeyl. — Nice 😉

16:09 <discord-_> Sir Mortimer. — I need to make moar bread. The kids just turned into piranhas

16:18 <discord-_> Sir Mortimer. — `gravitational_parameter = 0.0890 GM☉`

16:18 <discord-_> Sir Mortimer. — fun!

16:18 <discord-_> Sir Mortimer. — GM🜨 is nice, too

16:18 <discord-_> Sir Mortimer. — but what on earth does it mean?

16:18 <discord-_> Sir Mortimer. — (or, to be precise: what on Trappist-1b)

16:29 <_whitenotifier-d13c> [Principia] pleroy synchronize pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

16:35 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

16:35 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4277/

16:43 <discord-_> egg. — well, precisely

16:43 <discord-_> egg. — 🜨 is the symbol for Earht

16:43 <discord-_> egg. — 🜨 is the symbol for Earth/ (edited)

16:43 <discord-_> egg. — 🜨 is the symbol for Earth (edited)

16:45 <discord-_> egg. — See https://github.com/mockingbirdnest/Principia/blob/1e25c7314ae5523b821987b51c3080e91973aa83/quantities/astronomy.hpp#L26-L51 for the definitions and the source

16:50 <_whitenotifier-d13c> [Principia] Success. #696 succeeded - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=696

16:52 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4277/

16:57 <_whitenotifier-d13c> [Principia] Success. #695 succeeded - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=695

17:00 <_whitenotifier-d13c> [Principia] pleroy synchronize pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

17:01 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

17:01 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4278/

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17:17 <_whitenotifier-d13c> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4278/

17:22 <_whitenotifier-d13c> [Principia] pleroy closed pull request #2565: Add unit test for the angular momentum correction - https://git.io/JfWwo

17:22 <_whitenotifier-d13c> [Principia] pleroy pushed 15 commits to master [+0/-0/±48] https://git.io/JfWiZ

17:22 <_whitenotifier-d13c> [Principia] pleroy b37b71d - More Mathematica support.

17:22 <_whitenotifier-d13c> [Principia] pleroy e08d805 - Move the complicated code to a separate function.

17:22 <_whitenotifier-d13c> [Principia] pleroy e98f9be - Rename parameters.

17:22 <_whitenotifier-d13c> [Principia] ... and 12 more commits.

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17:22 <_whitenotifier-d13c> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=698

17:22 <_whitenotifier-d13c> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=697

17:22 <_whitenotifier-d13c> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=698

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17:44 <_whitenotifier-d13c> [Principia] Failure. #697 failed - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=697

17:50 <discord-_> Sir Mortimer. — hm. i just realized that having a planet without an inclined rotation axis has the advantage that one doesn't need leap years. at least not as long as you don't look at the stars

17:51 <discord-_> Sir Mortimer. — HA! 😄

17:51 <discord-_> Sir Mortimer. — https://cdn.discordapp.com/attachments/480397772248580098/709100357242060850/Bildschirmfoto_2020-05-10_um_19.51.10.png

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17:54 <discord-_> egg. — well, you need leap years as much as you need years, but yes, years become less relevant

17:55 <discord-_> egg. — nice coverage of the Sun there

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17:58 <_whitenotifier-d13c> [Principia] Failure. #698 failed - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=698

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19:26 <discord-_> Alwis Wennerstroem. — Hi, just a simple question : doest mechjeb2-dev is intended to work with principia, not for transfer planning but for ascent guidance and smart SAS?

19:30 <discord-_> Stonesmile. — @Alwis Wennerstroem do you mean "launch into plane of target"?

19:31 <discord-_> Alwis Wennerstroem. — No, just ascent guidance : PVG to a target inclination, apoasis and periapis

19:32 <discord-_> lpg. — that works fine, yes. as does smartass

19:32 <discord-_> lpg. — even advanced transfer planner is useful for long-term planning

19:32 <discord-_> Alwis Wennerstroem. — ok, going to the MJ channel

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20:07 <discord-_> Alwis Wennerstroem. — Returning here after to have discovered that my crazy MechJeb was due to the spinup bug #2519.

20:08 <discord-_> Alwis Wennerstroem. — What chances i have to rollbacking my carrer from fubini on frenet? KSP crash when loading the carreer with the old release (trying to remove all orbiting debris to test if it may work)

20:08 <discord-_> Stonesmile. — Is it that particular save that crashes or all saves?

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20:19 <discord-_> Alwis Wennerstroem. — hum, RP-1 is sufficiently hard to concentrate enough time on only one carrer so I tested only on one save. I got another sandbox one to test

20:23 <discord-_> egg. — Frobenius introduced ZFP which makes it forward-incompatible; you can downgrade to Frobenius but not to Frenet

20:23 <discord-_> egg. — Frobenius has a different flavour of rotation issues so that may work better for you

20:35 <discord-_> Alwis Wennerstroem. — Ok, if i can have the link to dl forbenius for 1.8, I'll try that

20:36 <discord-_> egg. — you can find it in the history of the readme https://github.com/mockingbirdnest/Principia/commits/master/README.md

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20:50 <discord-_> Alwis Wennerstroem. — Ok, i've removed all alive objects of my save and i succeed to rollback it to frenet. MJ PVG is working well as you can see.

20:50 <discord-_> Alwis Wennerstroem. — https://cdn.discordapp.com/attachments/480397772248580098/709145327789408396/screenshot60.png

20:50 <discord-_> Alwis Wennerstroem. — Thanks for the link @egg, i didn't think to look into the history of readme

20:51 <discord-_> Alwis Wennerstroem. — And thanks for help @Stonesmile

20:51 <discord-_> Alwis Wennerstroem. — And thanks for help @Stonesmile @lpg (edited)

21:14 <discord-_> Proton-M blok DM-SL. — is KSPTOT compatible with Principia

21:24 <discord-_> Kobymaru. — Not really

21:25 <discord-_> Kobymaru. — there's a mode for it, but I havent been able to figure it out, the way principia does planetary and orbital tilts confuse it

21:25 <discord-_> Kobymaru. — but I guess you can try playing with a bit, it requires you to get the planets from KSP by importing your save

21:30 <discord-_> Proton-M blok DM-SL. — also for transfers, what reference frame do I use,

21:31 <discord-_> Proton-M blok DM-SL. — i am trying to get a mars flyby

21:44 <discord-_> lpg. — <target-body>-centered, sun-aligned tends to work well

22:04 <discord-_> Kobymaru. — first sun-centered to get a general idea and then body centered to refine

22:34 <discord-_> egg. — @Sir Mortimer hm, I think it turns out you can’t actually use `dynamic` (I think KSP does not ship the necessary DLLs), so good old reflection it is

22:35 <discord-_> egg. — (which is a bit annoying because we explicitly do not guarantee whether the members you should access in the interchange types are properties or fields, so you have to write code that is looks for both)

22:35 <discord-_> egg. — (otoh we provide example snippets of libraries to look for both if you want)

22:44 <discord-_> dkavolis. — isn't `dynamic` just a C# feature?

22:46 <discord-_> egg. — yes but one that requires some fancy modules

22:46 <discord-_> egg. — Microsoft.CSharp is the DLL that it fails to find if you use it :-p

22:48 <discord-_> egg. — @Sir Mortimer numbers!

22:48 <discord-_> egg. — https://cdn.discordapp.com/attachments/480397772248580098/709174987214553108/screenshot21.png

22:48 <discord-_> Sir Mortimer. — Heureka!

22:49 <discord-_> dkavolis. — Someone could distribute the dll with the mod, doubt KSP will use it

22:51 <discord-_> Damien. — @egg before I go to the trouble of feature requesting it, is being able to save flight plans potentially an option? I have a stationkeeping burn planned but want to play with a TCM maneuver but also don't want to do the stationkeeping burn again aaaand I realised I can just quickload

22:51 <discord-_> Damien. — still might be useful though

22:51 <discord-_> egg. — @Sir Mortimer With appropriate wrappers (from https://github.com/mockingbirdnest/Principia/wiki/Interface-for-other-KSP-mods#appendix-reflection-utilities) usage looks like

22:51 <discord-_> egg. — ```csharp

22:51 <discord-_> egg. — object principia = Principia.Get();

22:51 <discord-_> egg. — object q = Reflection.Call(principia,

22:51 <discord-_> egg. — "CelestialGetSurfacePosition")(

22:51 <discord-_> egg. — FlightGlobals.GetHomeBody().flightGlobalsIndex,

22:51 <discord-_> egg. — 45,

22:51 <discord-_> egg. — 90,

22:51 <discord-_> egg. — 1,

22:51 <discord-_> egg. — Planetarium.GetUniversalTime());

22:51 <discord-_> egg. — var x = Reflection.GetFieldOrPropertyValue<double>(q, "x");

22:51 <discord-_> egg. — var y = Reflection.GetFieldOrPropertyValue<double>(q, "y");

22:52 <discord-_> egg. — var z = Reflection.GetFieldOrPropertyValue<double>(q, "z");

22:52 <discord-_> egg. — ```

22:53 <discord-_> egg. — If you could use `dynamic` you could do away with the `Reflection` class entirely and write

22:53 <discord-_> egg. — ```csharp

22:53 <discord-_> egg. — dynamic principia = Principia.Get();

22:53 <discord-_> egg. — dynamic q = principia.CelestialGetSurfacePosition(

22:53 <discord-_> egg. — FlightGlobals.GetHomeBody().flightGlobalsIndex,

22:53 <discord-_> egg. — 45,

22:53 <discord-_> egg. — 90,

22:53 <discord-_> egg. — 1,

22:53 <discord-_> egg. — Planetarium.GetUniversalTime());

22:53 <discord-_> egg. — double x = q.x;

22:53 <discord-_> egg. — double y = q.y;

22:53 <discord-_> egg. — double z = q.z;

22:53 <discord-_> egg. — ```

23:06 <discord-_> egg. — hah, I was looking for a bug because CelestialGetSurfacePosition was not changing with time given fixed latitude and longitude, but of course I am on the surface so World axes rotate with the planet…

23:15 <_whitenotifier-d13c> [Principia] eggrobin opened pull request #2566: Three new API functions - https://git.io/JfWFL

23:17 <_whitenotifier-d13c> [Principia] Pending. Build queued… -

23:17 <_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4279/

23:28 <_whitenotifier-d13c> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4279/

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