Graphics In Flatland – 2D ray tracing [video]
81 points by evakhoury 4 days ago | 13 comments
  • jmward01 11 hours ago |
    "[download] Got error: HTTP Error 403: Forbidden. Retrying fragment 30 (3/10) ..." Looks like yt-dlp just got nerfed again. Google: We can download all your stuff but you can't download ours....
    • immibis 10 hours ago |
      Did you update yt-dlp?
      • jmward01 9 hours ago |
        yeah. Probably come back in a few days. I really only dl a few things a week (things I give patreon $ to but that don't have patreon links).
    • littlestymaar 10 hours ago |
      > Google: We can download all your stuff but you can't download ours....

      “There must be in-groups whom the law protects but does not bind, alongside out-groups whom the law binds but does not protect.”

    • JoshTriplett 10 hours ago |
      Works fine here.
    • nemof 10 hours ago |
      yt-dlp works fine for me. make sure you've updated. they now list the js that is used for solving for youtube downloads as an external dependency, so you might need to install that too. look at yt-dlp github, look for yt-dlp-es
    • pengaru 10 hours ago |
      It's your IP address, you're leeching too much without using the prescribed player. After some time it'll start working again. I bet if you go to the web site it will ask you to log in to prove you're not a bot, if you're not logged in already.
  • albertgoeswoof 10 hours ago |
    Great video! This references the fantastic book Flatland, which helps explain dimensionality in really easy to understand way, and helped me get my head around what a 4th or n level dimension is (and why we it’s so unintuitive for us 3-dimensional beings)
    • whycome 9 hours ago |
      Is that book okay for a 10yo girl?
      • tylerritchie 2 hours ago |
        yes? it's got sexist and classist elements and satirizes victorian culture.

        i'd encourage reading it ahead of gifting (and i'd encourage grabbing it from archive.org or something, since it's 141 years old) because not all 10 yearolds are going to receive it the same way

  • badosu 8 hours ago |
    Folks that like this, might find this interesting, an incredible resource for my then younger mathematical mind: https://www.dimensions-math.org/Dim_E.htm

    An exploration of 3d via projections in 2d then 4d via projections in 3d.

  • yakattak 4 hours ago |
    I kind of thought this video was going to be about Flatland the book but it was even better. This is a fantastic and easily digestible explanation of ray tracing.