Functional Quadtrees
lbjgruppen.com
Functional Quadtrees
1–10 of 52 posts
Re: Functional Quadtrees
#2I love the visualization, which gave me an idea: what if we numbered every "Looking at" step in the visualization? Then it's obvious just how many search steps it takes.
And then maybe even juxtapose that with a linear search example, which also numbers every step. I bet this would make it really click for some people. And for free the user can also play with how a linear search can sometimes be faster when they just want the first element!
As a bonus: allow the user to change the cell count so they can really feel just how each method scales!
Re: Functional Quadtrees
#3Neat! Weirdly sending this article from my phone (Pixel 8) to my browser (Arc) via Pushbullet resulted in an incredibly strange bug that it loads this site instead:
https://www.lindelystables.dk/en/posts/functional-quadtree-c...
Got very confused! I challenge the HN hivemind to figure out what's going on.
Re: Functional Quadtrees
#4We just did a whole visual identity around the quadtree concept. Take a scroll on this one! https://trace.systems/
Re: Functional Quadtrees
#5I think it is weird to have two cells divided downto their smallest size when my cursor clearly occupies only one of them, not two.
Re: Functional Quadtrees
#6Neat! Weirdly sending this article from my phone (Pixel 8) to my browser (Arc) via Pushbullet resulted in an incredibly strange bug that it loads this site instead: https://www.lindelystables.dk/en/posts/functional-quadtree-c... Got very confused! I challenge the HN hivemind to figure out what's going on.
I remember Arc randomly rewriting my bookmarks using some kind of summarization model or something like that, it also sometimes changed the name of downloaded files reinterpreting their names. Maybe it is related somehow.
Well, I guess it was the first AI-first browser, hence all this bs. I uninstalled it months ago...
Re: Functional Quadtrees
#7Neat! Weirdly sending this article from my phone (Pixel 8) to my browser (Arc) via Pushbullet resulted in an incredibly strange bug that it loads this site instead: https://www.lindelystables.dk/en/posts/functional-quadtree-c... Got very confused! I challenge the HN hivemind to figure out what's going on.
Apologies! I think I might have a found an eager redirect on the server. I haven't been able to reproduce, but you're not the first to report it. I hope it's fixed now.
Re: Functional Quadtrees
#8"I could only find a couple tutorials/guides and both were imperative"
Aren't Quadtrees covered by almost all basic data-structure books? It is the most simple form of taking the binary tree into the next (2D) dimension.
Re: Functional Quadtrees
#9Neat! Weirdly sending this article from my phone (Pixel 8) to my browser (Arc) via Pushbullet resulted in an incredibly strange bug that it loads this site instead: https://www.lindelystables.dk/en/posts/functional-quadtree-c... Got very confused! I challenge the HN hivemind to figure out what's going on.
I remember Arc randomly rewriting my bookmarks using some kind of summarization model or something like that, it also sometimes changed the name of downloaded files reinterpreting their names. Maybe it is related somehow. Well, I guess it was the first AI-first browser, hence all this bs. I uninstalled it months ago...
Yeah that feature was nice at the start then got very annoying. Still like the browser though. Weirdly enough chrome on my phone has been reporting the wrong URLs, usually one I've just been on.
Re: Functional Quadtrees
#10A general quadtree implementation question that puzzled me when I was implementing it myself for hobby games was: do you store a rectangle in the smallest node that completely contains it?
Most code that I saw that used quadtrees were treating things as points and storing them only at the lowest level.
I also made mine auto-divide by counting items that are entirely in a quadrant as they are added to the node, with allocate and split triggered if a count went above a certain threshold.
Anything novel or oopsie?