hi,
I'm searching for a trick to make the shadow of an object visible on an
undergroung. but the underground is not visible. so, maybe with no_image
or with rgbt 1 or something like that. the problem is, that if there in
no object visible, there is no shadow. but I want to have a shadow
without underground, is that possible? (excuse my bad english)

thanks, Benjy

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In article <3E1480FD.26C73DE3@t-online.de>,
 Benjamin Winter <320### [at] t-onlinede> wrote:

> I'm searching for a trick to make the shadow of an object visible on an
> undergroung. but the underground is not visible. so, maybe with no_image
> or with rgbt 1 or something like that. the problem is, that if there in
> no object visible, there is no shadow. but I want to have a shadow
> without underground, is that possible? (excuse my bad english)

A shadow is just an area of an object with less light shining on it, it 
isn't a "thing". Take away the object and there is no longer any surface 
for there to be an absence of light on.

If you just want a solid colored background with only a shadow, no 
shading or horizon visible, set the background to the desired color and 
use a plane with a flat color pigment and "brilliance 0" in the finish 
statement:

background rgb < 1, 1, 1>

plane {y, 0
    texture {
        pigment {rgb < 1, 1, 1>}
        finish {brilliance 0}
    }
}

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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Wasn't it Benjamin Winter who wrote:
>hi,
>I'm searching for a trick to make the shadow of an object visible on an
>undergroung. but the underground is not visible. so, maybe with no_image
>or with rgbt 1 or something like that. the problem is, that if there in
>no object visible, there is no shadow. but I want to have a shadow
>without underground, is that possible? (excuse my bad english)

Is this what you want?

The POV Alpha Shadow Tutorial
<http://www.econym.demon.co.uk/shadowtut>

-- 
Mike Williams
Gentleman of Leisure

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