"uwe" <nomail@nomail> wrote in message
news:web.422d943651916273b054365e0@news.povray.org...
> "Chris B" <c_b### [at] btconnectcom> wrote:
> > "Slime" <fak### [at] emailaddress> wrote in message
> > news:422cbb32$1@news.povray.org...
> > > > .. the shadows are not affected by the image map. the shadows are
> > > > those cast by the underlying object.
> > >
> > > If you can see through it, then it should not cast a shadow. Perhaps
your
> > > max_trace_level is too low?
> >
> > It also depends on how much of the surface is opaque and whether the
light
> > lines up with the bits of the image on the front and back surfaces...
> >
> The object is a box. the texture (pigment image map) is an image of a
number
> "35" the 35 is solid, everything else is 100% transparent. the shadow is
> clearly cast by the entire box. no silouhette of a number 35is visible.
>
> i did some more testing, without texture map. i set the transmit of the
box
> to 100%. still it casts a shadow. strange, isn't it?
>

Have you tried Slime's suggestion and adjusted the max_trace_level?
Otherwise I suggest reducing the scene to the minimum number of elements
(comment out the rest) to make sure nothing else is causing the effect.
If you're saying that without the texture map you get something like box
{0,1, pigment {color rgbt 1}} casting a shadow on plane {y,-1 pigment {color
rgb 1}} then yes that's something very strange.
If you reduce it to the minimum and still see a problem then why not post a
short code snippet.

Chris.

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