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
<egg|anbo|egg>
do we need to make radhard devices that can run principia
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<discord->
Damien. — Principia is both rad and hard
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<discord->
RurouniDonut. — Does anyone have any advice on how to do a Sun-Sync orbit?
<discord->
Acer_Saccharum. — What you downloaded from git is NOT the KSP plugin
<discord->
Acer_Saccharum. — You downloaded the source files, which can be built to form the plugin and program
<discord->
Acer_Saccharum. — The binaries (playable principia) are found on the forum thread as Google drive links
<discord->
DRVeyl. — ~~That's a good place to get it.~~ (where "it" is Principia, not the KSP plugin.) (edited)
<discord->
lpg. — also in the readme, which is shown on the top-level github page
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[Principia] pleroy opened pull request #2421: Propagate the apparent rigid motion of parts from the C# code to the pile-up - https://git.io/JeAnk
<discord->
Falcon. — how do i get it to show all orbits >.>
<discord->
lpg. — you pick a reference frame where that question is meangful, and you read the changelog explaining that change
<discord->
lpg. — you pick a reference frame where that question is meaningful, and you read the changelog explaining that change (edited)
<discord->
lpg. — (and then you ask again, because it's not doing what you expect. I've not reached that step yet)
<discord->
egg. — @Falcon it shows orbits only after the start of the game
<discord->
egg. — so you have something alreayd
<discord->
egg. — so you have something already (edited)
<discord->
egg. — @Falcon you also need to increase the history length setting
<discord->
egg. — right now it shows you 7-day-long orbits
<discord->
Falcon. — I extended that to 365 days
<discord->
egg. — ah nevermind, you selected a spacecraft
<discord->
Falcon. — i guess i have to go out and then come back?
<discord->
egg. — so it shows you orbits for as old as that spacecraft is
<discord->
egg. — click on noctus
<discord->
egg. — and you'll get longer orbits in the past
<discord->
lpg. — oh that explains several things I didn't understand
<discord->
Falcon. — how do i get longer orbits from planets?
<discord->
egg. — are you in the tracking station?
<discord->
egg. — click on noctus-1, and increase the history length setting
<discord->
egg. — all histories are equal, and the vessel bounds history length
<discord->
Falcon. — Planets, not probes, i clicked the probes and it didnt show longer planetary orbits
<discord->
egg. — @Falcon I understand your question
<discord->
lpg. — Does this mean the only way to have nice planet orbit lines is to _not_ delete a craft with gigantic history in the .sfs? that seems unfortunate
<discord->
egg. — @Falcon you forgot the past before 8000 seconds
<discord->
egg. — so the game knows nothing of what happened earlier than that
<discord->
egg. — therefore it cannot yet show longer histories
<discord->
Falcon. — can it not show predicted orbits then?
<discord->
egg. — it can
<discord->
Falcon. — to account for it not knowing the past
<discord->
egg. — it will show the future for as long as it shows it for a vessel
<discord->
egg. — pick a vessel, increase the prediction tolerance or prediction steps, and you'll see longer predictions for the planets
<discord->
Falcon. — that makes my game slow down...
<discord->
Falcon. — a lot
<discord->
Falcon. — 3 seconds irl for 1 second in game
<discord->
egg. — @Falcon if you increase the prediction steps, it will be slower, you are asking us to do more work. If you increase the tolerance, it will not get slower, since you are allowing for less precision
<discord->
egg. — steps = amount of work
<discord->
Falcon. — about 2 seconds for not even an orbit of the moon ;-;
<discord->
egg. — it's not the orbit of the moon that's being expensive
<discord->
Falcon. — i know
<discord->
Falcon. — its predicting all other bodies
<discord->
egg. — not
<discord->
egg. — no
<discord->
egg. — @Falcon it is not the other bodies either
<discord->
egg. — it is your probe
<discord->
egg. — you are asking more about your chosen probe
<discord->
egg. — that is what is costly
<discord->
egg. — @Falcon and, further, it is slow *because you are asking for it to be slow*
<discord->
egg. — @Falcon keep the prediction steps low, and increase the tolerance
<discord->
egg. — steps = how slow you want it to be
<discord->
egg. — more steps = slower
<discord->
lpg. — it sounds like it could be useful to have separate prediction controls for selected vessel [and target?] and for planetary bodies
<discord->
egg. — (higher tolerance = less precise, but longer)
<discord->
egg. — @lpg I beg to differ
<discord->
egg. — @lpg why do you want to look at the orbits of the bodies
<discord->
egg. — aside from the feeling of familiaritiy
<discord->
lpg. — because they're pretty
<discord->
egg. — aside from the feeling of familiarity (edited)
<discord->
Falcon. — ^
<discord->
egg. — then you're in luck
<discord->
egg. — go to the tracking station without selecting a vessel
<discord->
egg. — and warp
<discord->
egg. — and enjoy the light show
<discord->
lpg. — the tracking station is _not_ pretty
<discord->
egg. — hm.
<discord->
lpg. — (and, annoyingly, doesn't support F2 to hide the UI)
<discord->
egg. — OK, you have some good points here
<discord->
egg. — @lpg @Falcon perhaps it would make sense to not take min(vessel age, max history length) as the actual max history length
<discord->
egg. — (i.e. go further in the past than the launch of the vessel)
<discord->
Falcon. — all im saying, is that its annoying that it doesnt show planetary orbits, since those are basically constant
<discord->
egg. — yes, and I'm trying to address this in a principled way
<discord->
lpg. — a principia way, surely
<discord->
egg. — note that showing the past up to the chosen max will not resolve the problem of 1951 (nor that of newly-converted pre-פרנקל saves)
<discord->
egg. — but that should be a very transient problem
<discord->
lpg. — this might incur 🌩️ but: is the concept of "backwards prediction" meaningful at all?
<discord->
egg. — it is meaningful, but it is a lot of work
<discord->
lpg. — I nominate neph
<discord->
egg. — just floated that idea to pleroy "it's legitimate, but let's not go there" :-p
<discord->
Falcon. — i dont understand how KSP is using 40% of my CPU
<discord->
Falcon. — i thought it was locked to one core
<discord->
egg. — Principia is very happy to use multiple threads
<UmbralRaptop>
2.5 core processor?
<discord->
egg. — in fact asynchronous predictions have been a major performance boost a few months ago
<discord->
Falcon. — how did you get around KSPs engine to do so?
<discord->
egg. — most of the things we do are completely isolated from KSP
<discord->
Falcon. — one question egg, where does the "show maneuver node in navball" button located?
<discord->
Falcon. — @egg
<discord->
egg. — you may need to upgrade your tracking station for it to exist
<discord->
egg. — to whichever level gives you patched conics in stock
<discord->
egg. — @lpg or @Sir Mortimer might know
<_whitenotifier-d13c>
[Principia] eggrobin labeled pull request #2421: Propagate the apparent rigid motion of parts from the C# code to the pile-up - https://git.io/JeAnk
<discord->
lpg. — you need both TS and MC upgrades I believe
<discord->
lpg. — and the button shows up in the flight plan window, somewhere above the engine selection buttons from what I recall
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<_whitenotifier-d13c>
[Principia] pleroy synchronize pull request #2421: Propagate the apparent rigid motion of parts from the C# code to the pile-up - https://git.io/JeAnk
<_whitenotifier-d13c>
[Principia] pleroy closed pull request #2421: Propagate the apparent rigid motion of parts from the C# code to the pile-up - https://git.io/JeAnk
<_whitenotifier-d13c>
[Principia] pleroy pushed 4 commits to master [+0/-0/±18] https://git.io/JeA0w
<_whitenotifier-d13c>
[Principia] pleroy 7954ea1 - Change the interface signature and make it compile.
<_whitenotifier-d13c>
[Principia] pleroy 760d93b - Propagate the rigid motion to the pile-up.
<_whitenotifier-d13c>
[Principia] pleroy 78b8e1c - After egg's review.
<_whitenotifier-d13c>
[Principia] pleroy 9e8d0ac - Merge pull request #2421 from pleroy/ApparentRigidMotion Propagate the apparent rigid motion of parts from the C# code to the pile-up
<discord->
egg. — @lpg showing histories up to the max rather than up to the beginning of the history of the current vessel should be an easy change and an improvement, I'm testing it now
<discord->
egg. — @lpg also note that the "new game" problem is not that bad in RSS, since we actually have solar system data starting in 1950 and RSS starts in 1951
<discord->
egg. — so you start the game with 1 year of history for free
<discord->
egg. — (well, "free", it's part of the first load time, but everything is so slow with RSS that it's probably minor :-p)