Geometry rendered as if Y is up

[rocketship]

I'm using the new Beta version of the software - really fantastic!

I think there's a matrix error somewhere in the geometry pipeline - my
geometry is rendering as if Y were up, but the camera is not. If I
rotate all my geometry so that Y- is up, it is correct (the rotation
fixes it), though I haven't been able to get a successful interior
render this way.

Is this a Rhino setup problem, or a DIVA problem?

Thanks,
Severn Clay-Youman
www.lesbetes.com

[Alstan Jakubiec]

> I think there's a matrix error somewhere in the geometry pipeline - my
> geometry is rendering as if Y were up, but the camera is not.  If I
> rotate all my geometry so that Y- is up, it is correct (the rotation
> fixes it), though I haven't been able to get a successful interior
> render this way.

Dear Severn,

I also initially experienced this problem from having Y-Up as the
default export option from working with other simulation softwares.
Luckily, its pretty easy to fix. Just manually run the export command
by doing the following:

- Select some Rhino geometry and type "Export."
- Choose obj as the format and save it somewhere.
- In the OBJ Export Options dialog, uncheck Y-Up.

From then on, those settings should be the default and DIVA should
export geometry properly. If that doesn't solve your problem,
something more insidious is happening indeed. If Y-Up is already
unchecked, I would make sure that your Rhino construction plane is set
properly by using the CPlane command with the options World > Top.

Best luck,
Alstan

[rocketship]

Alstan,

That was easy. Do you know if DIVA is inheriting the meshing settings
from the Wavefront export plug-in too?

cheers,
Severn

[Alstan Jakubiec]

> That was easy.  Do you know if DIVA is inheriting the meshing settings
> from the Wavefront export plug-in too?

It may be inheriting the other options, but I wouldn't try switching
your export to Nurbs surfaces. The only parameter controlling mesh
quality passed to DIVA is the PolygonDensity option which you will
eventually see if you run the command as _-Export for the command line
interface version.

That said, if you need better mesh-quality control, the best option is
to mesh the complex surfaces first in Rhino (using the mesh command)
and then delete their nurbs parent geometry or move it to a non-
exporting layer.

Alstan