Dear Alain,

 I really appreciate your big help.


Sunny

Alain <ele### [at] netscapenet> wrote:
> Sunny nous apporta ses lumieres en ce 2005-09-29 09:16:
> > Hello,
> >
> > Using a version of Rhinoceros(version 3), 8 or 10 cylinders were modeled,
> > and exported as a POV smooth triangular surfaces.
> > I am exeriencing following error:
> >
> >  Slab Building Error: cannot use non-perpendicular camera vectors with vista
> > buffer.
> >
> > Below I have listed part of the POV file. Any comment or suggestions would
> > be welcome.
> >
> > Thanks.
> >
> > Sunny
> > -------
> > // POV-Ray file generated from Rhinoceros.
> >
> > camera {
> >    orthographic
> >    location <38.3093, -13.2998, -27.5553>
> >    //look_at <39.0715, -13.6047, 1.5526>
> >    right <705.231, -3.82438e-017, -18.4671>
> >    up <0.145038, 529.076, 5.53877>
> >    direction <0.0261755, -0.0104718, 0.999603>
> >    /*
> >    // to get an image that's the same as the viewport in Rhino,
> >    // uncomment this section and render with command line options (alt+c):
> >    // +w403 +h264
> >    right <806.729, -4.37479e-017, -21.1249>
> >    up <0.145038, 529.076, 5.53877>
> >    direction <0.0261755, -0.0104718, 0.999603>
> >    */
> > }
> >
> > -----deleted ---
> >
> >
>
> Your camera vertors are not exactly perpendicular. In your case, it's a case of
rounding to only 3
> or 4 decimal places. Try changing the very small value (-3.8243 e-17 !) to zero.
> The scene should render just fine with just a, probably imperseptible, slight
skewing. As the vista
> buffer get disabled, the rendering may get slightly longer as you may loose some
optimisation.
>
> --
> Alain
> -------------------------------------------------
> What happens if you get scared half to death twice?

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