egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <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…
<queqiao--> <N​aa​ut​il​us​> get the best of both worlds by optimizing it such that BigNum works smoothly
<queqiao--> Reply to "N​aa​ut​il​us​: get the best of both worlds by optimizing it such that BigNum works smoothly"
<queqiao--> <S​ky​ 🐈⬛​> I'm imagining an octree with three bignums representing the position in space, the most signifigent digit being such that 0,0,0 is one corner 1,1,1 is the opposite corner, the more digits there are the more it divides the space.
<queqiao--> <N​aa​ut​il​us​> that would make sense if there were more than like 200 entries
<queqiao--> <N​aa​ut​il​us​> oh right this is a bit
<queqiao--> <N​aa​ut​il​us​> spot on
<queqiao--> <S​ky​ 🐈⬛​> so 999, 999, 999 would be close to one corner, 99_999, 99_999, 99_999 would be exceedingly close to one corner and so on
<queqiao--> <N​aa​ut​il​us​> we should hyperoptimize an algorithm for the movement of objects from one spot in the octree to another
<queqiao--> Reply to "S​ky​ 🐈⬛​: so 999, 999, 999 would be close to one corner, 99_999, 99_999, 99_999 would be exceedingl..."
<queqiao--> <S​ky​ 🐈⬛​> and from that keep increasing precision until the magic smoke escapes.
<queqiao--> <N​aa​ut​il​us​> and have at least 1000 branch levels
<queqiao--> <N​aa​ut​il​us​> i like where this is going
<queqiao--> <N​aa​ut​il​us​> actually i have an idea
<queqiao--> <N​aa​ut​il​us​> what if we have a 3d array, each array 1 million indices across, of craft id's which can be referenced to get exact positions
<queqiao--> <N​aa​ut​il​us​> vector<int> vehicles[1000000][1000000][1000000];
<queqiao--> <N​aa​ut​il​us​> and for the physics engine to get the position of a craft it needs to do a linear search of the array for the craft id
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<_whitenotifier-4f63> [Principia] pleroy opened pull request #4179: Add support for Visual Studio 17.13.4 - https://github.com/mockingbirdnest/Principia/pull/4179
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<queqiao--> <N​aa​ut​il​us​> does the trajectories mod not work with principia? is there an alternative if so
<queqiao--> <e​zs​na​ck​> It works
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<raptop> Oh, hey, if anyone wants to update Haumeau's spherical harmonics... https://arxiv.org/abs/2503.16142
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<raptop> ...I was going to to go "hey, I could do a small pull request" before realizing that haumea doesn't seem to be in Principia or RSS. ...and I can't find the actual body configurations in either repository x_x
<queqiao--> Reply to "N​aa​ut​il​us​: does the trajectories mod not work with principia? is there an alternative if so"
<queqiao--> <C​la​ye​l> it works, but its still going off of the patched conics, so it wont work well past anything in interplanetary or near a lagrange point
<raptop> So it's great inside the ferram4 sector, but try not to use it in the oeuf sector?
<queqiao--> Reply to "C​la​ye​l: it works, but its still going off of the patched conics, so it wont work well past anythi..."
<queqiao--> <e​zs​na​ck​> From my experience it always works fine except from very low orbit, the reason being as you said that if it goes off conics, so when you see a prediction that you like just note that perigee from the conics ui and match it with principia and it should work. The reason it doesnt work in very low orbit is because there the principia orbit diverges the most from the conics one so trajectory doesnt know where you will actually
<queqiao--> cross the atmosphere
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