Yup or Zup ?

CTZn · Post by **CTZn** » Tue Oct 30, 2007 1:46 pm

That's something I am really curious about, so I can't wait to see the new poll online

If you can argument that's even better, cheers !

Kram1032 · Post by **Kram1032** » Wed Oct 31, 2007 12:15 am

hum... there haven't been many blender user voters, yet: Blender has Zup in general...

WytRaven · Post by **WytRaven** » Wed Oct 31, 2007 12:46 am

Real men use Zup

Just kidding...

Actually with the exception of one package (maya?) every 3D modeling app I've used has been Zup...

Kram1032 · Post by **Kram1032** » Wed Oct 31, 2007 1:01 am

Btw, I've no idea of MEL, CTZn, but isn't it possible to make an overall "Y to Z" function (or the other way round)?

Zup:
X is left/Right
Y is forward/backward
Z is up/down

Yup: I've never used Yup, but I guess, X is similar... (if not, that doesn't affect the idea)
X is left/right
Y is up/down
Z is forward/backward

Every vert has the correct x but the wrong y and z, so, you could simply say
y = n (n is a switch variable)
z = y
n = z
for the whole scene, with just checking, whether or not Y is up

dougal2 · Post by **dougal2** » Wed Oct 31, 2007 2:06 am

As a Maya user, Yup here.

CTZn · Post by **CTZn** » Wed Oct 31, 2007 2:53 am

And why would z up users not vote ? TopMod is Y up, ZBrush is, modo as well, mudbox... not real men's softwares ?

dougal2 · Post by **dougal2** » Wed Oct 31, 2007 3:03 am

C4D is Yup as well.

Whaat · Post by **Whaat** » Wed Oct 31, 2007 3:06 am

SU is Zup

dougal2 · Post by **dougal2** » Wed Oct 31, 2007 3:07 am

something just occurred to me...

using the terminology Z-buffer for depth in a Zup app is a little bit nonsensical, no?

jeffr · Post by **jeffr** » Wed Oct 31, 2007 3:41 am

SolidWorks is Yup - ( you need to be a 'real man' to afford it

)

Kram1032 · Post by **Kram1032** » Wed Oct 31, 2007 3:56 am

Z-buffer was invented by some ppl, who where using Yup

Would be confusing if you'd name it Y-buffer, just because of you're using Zup progs.

For the discussion:

For me, personally, Zup is the more logic way. You look down on a sheet of paper, so that x is left and right, where as y is farther away and closer to you. So, the next dimension to add is upward by using Zup.
That's the geometric PoV.
Painters use canvas, aligned to their FoV, so that it's easier to paint something in front of them.
If they wanted to pay something from birds perspective, they'd have set their canvas up, just like that. - flat to the ground.
So, usually, they work with Yup and Zdepth

Additionally to the fact that I like geometry (not geometric painting, though - my hand is too crackly to get good marks ^^) I also learned it this way in school. It would be weird for me to have it the other way round.
Zup for me

Gog · Post by **Gog** » Wed Oct 31, 2007 4:14 am

MY brain always wants Y as up, got used to it being that way in Max and other packages, but as I currently use blender it's a tick for Z as up .....

CTZn · Post by **CTZn** » Wed Oct 31, 2007 5:29 am

Kram wrote:For me, personally, Zup is the more logic way. You look down on a sheet of paper, so that x is left and right, where as y is farther away and closer to you. So, the next dimension to add is upward by using Zup.

Well if that's logic, what about the blackboard you learned maths on ? Was it on your knees

?

Hehe there is a tie for now, 12/12

Kram1032 · Post by **Kram1032** » Wed Oct 31, 2007 5:33 am

The blackboard is Yup, yeah, but it's *one* surface, you write/paint/etc on, *one* person's using it, simultaneously to 10-30 (in extreme cases 40) other ppl, writing on Zup paper, next to it

Zups got active

jeffr · Post by **jeffr** » Wed Oct 31, 2007 7:11 am

Would it not be better to determine the number of applications that are Yup or Zup. Perhaps all the Zup people are all using the same app but that app is actually in the minority.
Don't know if it makes any difference to why your asking.

Yup or Zup ?

In your main 3d application, the up axis is set to:

Yup or Zup ?

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