Re: Coordinate Systems

JueyChong Ong ([email protected])
Mon, 22 May 1995 17:39:14 -0400

On May 22, 4:24pm, Help Chuck Kosta wrote:
> Subject: RE: RE: Coordinate Systems
> Although I just started getting the VRML mailings
> this weekend, I've been working in graphics and graphics
> standards since the early 80's.
>
> Stated as a consultant: You should formally adopt that Y is up,
> and that XZ is the ground plane. This is really to support the
> community of scientist, physicists, and other professionals that
> have been modeling the world this way.
>

I tend to work in the coordinate system you mention. But in a recent
conversation with someone who uses the Alias PowerAnimator software,
he said that among Alias users, about half of them use the "Y is up"
convention while the other half use the "Z is up" convention.

I don't know anything else to substantiate this; but either system is fine
with me as long is it's clearly stated.

--jc

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