T * sin (t)' ≈ Ornamented Christmas Tree (2013)
Comments
ryeguy_24
JadeNB
I checked the post, but it's from someone who's far more comfortable with Mathematica than I am, so I hope you won't mind my asking about the maths.
First, the T vs. t in T * sin(t) doesn't mean anything, right? Second, the ' in the title T * sin(t)' doesn't belong, right?
Then I think that this is graphing essentially (t * sin(t), t * cos(t), t + something), which is a cone if the something is constant, which I believe it is—and that certainly matches the graph. And the rest is about choosing an aesthetically pleasing step size and accomplishing the lovely twinkling and colors, right?
ryeguy_24
I added the prime in the title to indicate that this version is a bit different from the original t * sin(t) post.
JadeNB
OK, thanks. Is the rest of it right?
Arnavion
Silvia Hao's version is the one submitted here to HN, actually.
dylan604
Someone was too excited about Santa to actually you know click the link
frogulis
The GP commenter (ryeguy_24) is the original poster of this article, leaving additional information about what they posted.
dylan604
Yeah, and? That was the link that was not clicked. If the person had clicked that link they would have seen why their comment was not helpful.
flaminHotSpeedo
I think you still misunderstood. ryeguy_24 was *commenting on their own post*
They obviously clicked the link, because they posted it.
dylan604
You still think my comment was about ryeguy instead of the person I replied which is typically how comments flow. If they had clicked the link and read it, they would have seen why ryeguy posted the link that shows the evolution from the ‘original’. I’m really not sure why we’re unable here
To the point, they even admitted “guilty as charged”. I mean, what’s the cause of the lack of comprehension?
Arnavion
To beat this dead horse some more, I *had* clicked the link (how else would I know it was Silvia Hao's version that had been submitted?) and *had* read the username of the commenter of https://news.ycombinator.com/item?id=42506146. What I had *not* read was the username of the submitter, and thus did not realize the commenter and submitter were the same person, which recontextualizes the comment in question from "Personally my favorite version is Silvia Hao's that can be found in this discussion thread" to "This image that I submitted is by Silvia Hao and can be found in this discussion thread".
acer4666
Some was too excited about Santa to, you know, read the usernames of the submitter and commenter
TheSpiceIsLife
Some kind of Pareto Principle: 80% of people read 20% of the usernames.
deskr
Wrong. It says that 20% of people will argue with you and be confident that they are right even though they are more wrong.
TheSpiceIsLife
100% of the people I live with will argue with me 20% of the time and be wrong 80% of those times.
romanobro56
Pareto victim right here
JadeNB
> Pareto victim right here
I'm pretty sure deskr was making a joke.
TheSpiceIsLife
I chuckled
Arnavion
Guilty as charged.
jll29
That's a beautiful animation (and useful maths ;-).
In the spirit of minimalism, Merry Christmas to all HNers with this little but time-tested command:
$ xmastree 5 9 2024`
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Lerc
I made this Bauble dweet as a Christmas themed exercise in 2020 https://www.dwitter.net/d/20993
function u(t) {
t||(c.width/=6) // shrink canvas to 1/6 at t==0
M=a=>x.filter=a?"none":"blur(1px)brightness(90%"
M();x.drawImage(c,0,0)
for(i=n=90;--i;)
x.fillRect(
160-S(X=i+t*4)*(1-(v=C(i*n))*v)*n,
v*n+n,
4,
2,
x.fillStyle="#F"+(i+10),M(C(X)<0))
}
foobar1962
My first time seeing it. Thanks for posting, and thanks to HN for being the kind of place that stuff like this gets posted.
matsemann
Here's variants using 140 characters of Javascript: https://www.dwitter.net/h/christmas
theodpHN
GIF Xmas Tree, GIF Xmas Tree... https://communities.sas.com/t5/Graphics-Programming/Fun-with...
belter
Happy Festive Season! A nice one from Desmos: https://www.desmos.com/calculator/wgunyn2yd0
bazzargh
Here's one I did for the bbcmicrobot using a Chaos Game approach
noduerme
I went to Hopscotch in Portland with some friends tonight, tried out the "quantum trampoline" [0]... spent most of my time in socks wondering if that was written in plain ol' javascript or p5. Happy Holidays, folks.
capitainenemo
Well, they do have a github.. https://github.com/kuflex
Looks like it was written in C++
theodpHN
A 'Traveling Santa Tour' Through U.S. Capital Cities https://communities.sas.com/t5/New-SAS-User/Fun-With-SAS-ODS...
theodpHN
Damped Oscillation Xmas Tree https://communities.sas.com/t5/Graphics-Programming/Fun-With...
Alifatisk
I think this would be perfect on openprocessing.org, I just don't know how to implement that.
BobbyTables2
Now make 30% of the bulbs randomly burn out :)
hippich
Randomly wouldn't be that bad. But whole segments - way more noticable!
nuodag
usually a bunch of lights are wired in series, if one burns out all stay dark.
Find and replace the broken one, and all light again!
layer8
Or a drill.
block_dagger
This is not a drill. It really is Christmas.
layer8
The function is neither a drill nor a Christmas tree, but similar to how it happens to look (≈) like a Christmas tree, it also happens to look like a drill. This is what I wanted to point out. It’s a multipurpose function.
Uncorrelated
block_dagger was making a pun based on the sense of drill as a training exercise. A similar joke went over the heads of nearly everyone on a recent episode of Taskmaster:
noduerme
English being the global language makes it easier to get a lift, but much harder for anyone to pick you up.
DrSAR
It is also not a pipe
arcticbull
Cici n'est pas un arbre de Noël tabarnak
bjconlan
Haha, oh I miss the Quebecois. Appropriation of Catholic vernacular make for the best profanities.
corobo
I wish I had more to add, but I do not. This proper tickled me, thank you. lmao
Merry Christmas HN. Ever year, the original T * sin(t) Christmas tree gets posted. This year, I wanted to call out my favorite modification by Silvia Hao. It’s beautiful. One year, I’ll try to add to its beauty. But for now, I’ll just appreciate it. She posted it here: https://community.wolfram.com/groups/-/m/t/175891