From: Xplo Eristotle
Subject: Re: Shadows on a clear surface
Date: 19 Feb 2003 07:59:50
Message: <3e537fc6@news.povray.org>
Rib Rdb wrote:
> Is there any way to make a surface that will have a semi-transparent > shadow cast on it, but everywhere except the shadow is transparent?
You can get this effect by making the surface not quite fully
transparent. If you think about what causes shadows you should realize
why this is necessary.
-Xplo
From: Tim Nikias
Subject: Re: Shadows on a clear surface
Date: 19 Feb 2003 09:28:22
Message: <3e539486$1@news.povray.org>
> You can get this effect by making the surface not quite fully> transparent. If you think about what causes shadows you should realize> why this is necessary.
I'm not sure if I understood you right, but I think you're telling
him how an object casts shadows, while he wants to know how
an object may be invisible, except for shadows falling ON it.
But I don't know how that could be achieved.
--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde
Do a search for transparent and you'll find Mael's post:
From: Mael
Subject: shadow on transparent background [12.6 kbu]
Date: 2 Jan 2003 03:03:25 EST
to answer http://news.povray.org/3e0cb100%40news.povray.org i found a way to
simulate shadow (or semi transparent shadow) on a plane (or on any object)
with a transparent background by using the projection patch in mlpov.
Wasn't it Rib Rdb who wrote:
>Is there any way to make a surface that will have a semi-transparent >shadow cast on it, but everywhere except the shadow is transparent?
I wrote a tutorial about this at
<http://www.econym.demon.co.ul/shadowtut>
--
Mike Williams
Gentleman of Leisure
Wasn't it Mike Williams who wrote:
>Wasn't it Rib Rdb who wrote:>>Is there any way to make a surface that will have a semi-transparent >>shadow cast on it, but everywhere except the shadow is transparent?>>I wrote a tutorial about this at ><http://www.econym.demon.co.ul/shadowtut>
Taht shoud ov coarse bee
<http://www.econym.demon.co.uk/shadowtut>
--
Mike Williams
Gentleman of Leisure
de