Neil Cooke wrote:
Hi George,
No good for a planetary or low orbital POV but for ground level ...
maybe.
Thanks for that Neil. I've just got a similar effect using the cloud
material mapped to the light. Change the shader to light properties and
change the output from colour to scope. Haven't tried it in the scene
yet, but seems ok. I'll try your method too and see which is best.
Point is that at this POV you dont need shadows to tie into clouds ...
this is never visible to a human on the ground.
Worked that out :-) But they have to vaguely match in density.
Thanks again
George
Neil Cooke
----- Original Message ----- From: "George Jenner"
<[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, February 19, 2006 12:36 AM
Subject: Cloud shadows on a landscape
Greetings
Well after the success of last weekend's ploughing I thought you needed
another challenge :-)
I have a sky coloured using Tim Borgmann's VSL cloud from Realsoft
downloads. Now I want to use the same material to put shadows of clouds
on the landscape.
It's easy to make a slide projector using a bitmap (it's in the manual -
light properties, illumination = texture (map coords - parallel map to a
distant light), but I can't seem to get anywhere using a procedural
shader.
So what are my options? Render the sky to a bitmap and use that? I'd
rather use the sky material to easily change the density of clouds in
the
sky and shadows at the same time.
I thought of making a "mask" to put in front of the light, but how do
you
do that for a distant light? Doesn't make sense for a light that is
infinitely wide. Neither does mapping a bitmap to it, for that matter.
And ideas? This must have been done before. If anyone remembers links
I'd be mucho grateful.
Thanks. But now I have to go thermally morph some disk projections of
lactofarinacious colloid for lunch. (pancake time)
George
