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Hello everyone !!!
Now i'm trying to make a sun-like light_source...
When i say sun-like I mean :
-> Parralel light, or very far light source, so that it seems parralel
-> No 100% black shadow : the objects around me reflect light a little bit
and light my shadow : in real life, during the day, there are very few 100%
black shadow...
-> When a non-sun-like light source make a shafow, THIS shadow is black,
only sun-like light source can have smooth shadow...
I considered using area_light, but the sun isn't really an area from the
Earth, and anyway that still leave hard shadows...
Does someone have an idea ?
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> -> Parralel light, or very far light source, so that it seems parralel
There's the parallel keyword for lightsources, use it with point_at in the
lightsource and your good to go.
> -> No 100% black shadow : the objects around me reflect light a little bit
> and light my shadow : in real life, during the day, there are very few
100%
> black shadow...
You might want to look at radiosity, or using shadowless lights to crudely
model the way light bounces off of objects and illuminates the shadows.
Three-point-lighting is another term you might want to google.
> -> When a non-sun-like light source make a shafow, THIS shadow is black,
> only sun-like light source can have smooth shadow...
Arealights takes care of sharp and smooth shadows, depend on how big you set
them.
Hope that gets you started.
Regards,
Tim
--
aka "Tim Nikias"
Homepage: <http://www.nolights.de>
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Woow radiosity is really cool !
I think that's what I've been searching. Thank you !
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Gyscos <gys### [at] gmail com> wrote:
> -> When a non-sun-like light source make a shafow, THIS shadow is black,
> only sun-like light source can have smooth shadow...
On what do you base this assumption? It doesn't work like that in real
life.
> I considered using area_light, but the sun isn't really an area from the
> Earth, and anyway that still leave hard shadows...
Actually the Sun is not a point light. If you eg. photograph the sun
(with the camera set up so that you can see the disc of the sun, eg. by
using a strong filter) you see that it is a disc with a visible size.
Thus the sun is an area light.
Moreover, the atmosphere scatters the light, and this effect is
especially strong when the sky is a bit cloudy. When the sun shines
from behind a cloud, all shadows are really smooth.
--
- Warp
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