Re: Performer is rotating my axis!!

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Geoff Levner (g.levner++at++acsys.it)
Fri, 26 Nov 1999 18:27:53 +0100


Daniel F Johnston wrote:

> Hi group!
>
> This is a longish message <snip>

I have never used the Inventor loader, but I have used the VRML loader, and
presumably they behave the same way. In that case, what is happening is
that the loader is automatically converting your models from their normal,
sensible, Y-up coordinate system to Performer's brain-dead Z-up coordinate
system. That is why your models look the same, whether you use Inventor or
Performer, even though the cameras are aligned along different axes. But
if you are going to move things around, you have to take that into account
and switch the Y and Z axes (i.e. Inventor Y becomes Performer Z, and
Inventor Z becomes Performer -Y).

Geoff

--
Geoff Levner -- g.levner++at++acsys.it
ACS Studio, via Aurelia 58, 00165 Roma, Italy
tel. +39-063936331, fax +39-0639363317

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