Comment on The more you know

jaschen@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

• MacNCheezus@lemmy.today ⁨11⁩ ⁨months⁩ ago

  Not in bistromath.

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  • Aurenkin@sh.itjust.works ⁨11⁩ ⁨months⁩ ago

    Indeed, a common mistake for newcomers to the field.

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• PM_ME_VINTAGE_30S@lemmy.sdf.org ⁨11⁩ ⁨months⁩ ago

  It’s typically vertical, but you can name your variables however you want.

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  • MacNCheezus@lemmy.today ⁨11⁩ ⁨months⁩ ago

    The Z axis is usually used for depth, so it’s going to be perpendicular to whatever your frame of reference (i.e. projection plane) is.

    If it’s upright in space, like a computer screen, the Z axis will be horizontal. If it’s a sheet of paper on a desk, then yes, I suppose it could be argued to be vertical instead.

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• CheesyFox@lemmy.world ⁨11⁩ ⁨months⁩ ago

  in lots of 3D software Z is horizontal

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  • jaschen@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

    All the 3D printer software, Z is vertical. But I only used a couple so I am not an expert.

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    • VikingHippie@lemmy.wtf ⁨11⁩ ⁨months⁩ ago

      All the 3D printer software

      But I only used a couple

      🤔

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      • jaschen@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

        Yup.

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  • victorz@lemmy.world ⁨11⁩ ⁨months⁩ ago

    Horizontal going into the screen right? The depth axis, if you will.

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    • experbia@lemmy.world ⁨11⁩ ⁨months⁩ ago

      not consistently. I find there are basically two schools of thought in 3d graphics:

      • the screen is a graph representing a 3d space: the x axis is horizontal, the y axis is vertical. depth, going ‘into’ the screen, then becomes the z axis. mathematicians and programmers tend to like this.

      • the screen is a camera viewing a 3d space from within itself: the coordinates to position yourself along a line is one dimensional: x. to position yourself on a plane as in a 2d game, two dimensional: x, y. to position yourself within a volume, three dimensional: x, y, z. humans are kind of inherently planar spatial navigators - it’s easy to think about our position in terms of “where on the ground” we are, then adjust for height. 3d artists and level designers tend to like this.

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      • victorz@lemmy.world ⁨11⁩ ⁨months⁩ ago

        Ah I see. Thanks. I’m used to the first line of thought, as that’s what I’ve been using when doing 3D programming.

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• victorz@lemmy.world ⁨11⁩ ⁨months⁩ ago

  No? That would be the y axis.

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