Z is elevation. Any real world application, z goes up down. 3D applications SHOULD use it for elevation. I despise that many do not. It's so fucking confusing. 2D, sure y go brrr. But once that 3rd dimension is added, y needs to take several seats and quit trying to take on dimensions it doesn't have any right to.
Thanks to 3D printing Z is firmly “up” in my brain even if the modeler I use does it differently.
In my brain Z is Up, Z is Height. In my job I have to deal with both all the time which is quite annoying.
In 2D Y is up, in 3D Z is up.
X is always red🤷♂️
I legit had no idea anybody actually used the upper system until now. I had to read the comments just to see whether the upper system was just some sort of joke. I am horrified.
The top one is wrong because it violates the right hand rule.
In a 2D game Y is up. Going from 2D to 3D would make sense to add another dimension forward to account for depth.
However if you start with a map of a 3D surface then North is Y and East is X you'd add Z to account for elevation like everybody making maps would.
I guess it depends on how you look at it.
Top one is incorrect. Z needs to point outwards.
One of my friends and I used to always have this debate because of our different backgrounds. I got used to +Y being up because of doing physics for several years and seeing side-on diagrams that needed to account for gravity. My friend has a background in geology, so he's used to top-down surveying maps where +Z is up. It all depends on your perspective.
But my way is right. We need to have standards, people.
X is up, there now no one is happy.
The second fellow is a machinist, like me.
I'll leave this here for context (bottom right is the only sane one)
Minecraft
Yeah... As a Blender 3D artist, Z axis has been baked into my brain as the up/down axis.
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