• Buck Fucket@lemmy.world
    link
    fedilink
    arrow-up
    1
    ·
    2 years ago

    Ugh, when I have to open CAD for a project at work I have to setup a new coordinate system with Z going up, every time. The engineers just work with Y up for some reason. Too lazy to change it perhaps? Solid works and Inventor default Y up? I’ll never understand it. I definitely understand this meme. There’s also models with an origin 10 feet off in X and 20 feet out in Y. I just do not friggin get it man.

    • TwilightKiddy@programming.dev
      link
      fedilink
      arrow-up
      2
      ·
      2 years ago

      Because math works with Y up. Physics steal from math, engeneering steals from physics, so, here you are.

      What I can’t get is imperial measurement system. Apparently, nobody but americans can. And that stuff is far worse than Y and Z switching places.

      • ionburger@lemmy.sdf.org
        link
        fedilink
        arrow-up
        2
        ·
        2 years ago

        as a minecraft player learning how to use autocad, i thought y up was alot more ubiquitous then it apparently is

      • Widowmaker_Best_Girl@lemmy.world
        link
        fedilink
        arrow-up
        2
        arrow-down
        1
        ·
        2 years ago

        That’s what I don’t get. Why would they make Z up when in algebra, Y is up. It’s all based on math, shouldn’t we keep consistent on that?

    • amanaftermidnight@lemmy.world
      link
      fedilink
      arrow-up
      2
      ·
      edit-2
      2 years ago

      CAD used to be digital abstraction of the physical media that is 2D drawings on paper, so XY is the plane of the paper going horizontal/vertical, and most detailing are in vertical cross sections so Y ended up being up most of the time.

      The Z axis is then Frankensteined into the existing system to get a proper 3D representation, so it became the depth axis for the existing XY plane.

      In Minecraft it’s even more evident as Notch Frankensteined the Z axis into a game engine that’s originally developed for side scrolling.