The object is a box. the texture (pigment image map) is an image of a numer
"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?

kind regards, uwe



"Chris B" <c_b### [at] btconnectcom> wrote:
> "Slime" <fak### [at] emailaddress> wrote in message
> news:422cbb32$1@news.povray.org...
> > > however, 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.
> It's probably stating the obvious, but a ray will only shine through if both
> the point where it enters and the point where it leaves the object are
> transparent.
>
> Chris.

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