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Ah, okay. Didn't look out for that. So then, I can
confirm that the pure no_image works with
trace, but inside the given union (even if order
of objects are switched) it doesn't work.
POV-Ray for Windows, Win2000, AthlonXP 2.400+,
768 MB RAM
Regards,
Tim
--
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights
Email: no_lights (@) digitaltwilight.de
> Wasn't it Tim Nikias v2.0 who wrote:
> >
> >Rune, can you post a small example where it does
> >hit a no_image object?
> >
> He almost did in his original post, except that there was a tiny typo.
> The sphere should have been {0,1 no_image} rather than {1,0 no_image}
>
> // single sphere with no_image is detected by trace
> #declare Object = sphere {0,1 no_image}
>
> // sphere with no_image inside union is not!
> //#declare Object = union {sphere {0, 0.5} sphere {0, 1.0 no_image}}
>
> #declare N = <0,0,0>;
> #declare P = trace(Object,5*y,-y,N);
> #debug concat("\n\nP: <",vstr(3,P,",",4,2),"> N:
> <",vstr(3,N,",",4,2),">\n\n")
>
> --
> Mike Williams
> Gentleman of Leisure
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