POV-Ray : Newsgroups : povray.general : stupid blue haze Server Time: 30 Jul 2014 00:55:04 GMT
  stupid blue haze (Message 1 to 2 of 2)  
From: ricky312
Subject: stupid blue haze
Date: 28 Jan 2012 01:25:01
Message: <web.4f234e47d550cac99fa53fe60@news.povray.org>
I want to think everybody for their comments and help on my randscape.
But there is just one more thing i need help with.

If you place a cloud layer in the wrong height or have a flat terrain
you wiil notice a stupid blue haze at the base of the sky. I believe it is
caused by not having the the sky media inside the cloud box. if I place the
cloud media in the sky,it must sample the cloud the whole way through the sky
sphere and looks very bad(even though the s.b.h. is gone).

If someone has a solution i will be forever happy!

thank you


Post a reply to this message

From: Alain
Subject: Re: stupid blue haze
Date: 28 Jan 2012 03:36:37
Message: <4f236d45@news.povray.org>
Le 2012/01/27 20:24, ricky312 a écrit :
> I want to think everybody for their comments and help on my randscape.
> But there is just one more thing i need help with.
>
> If you place a cloud layer in the wrong height or have a flat terrain
> you wiil notice a stupid blue haze at the base of the sky. I believe it is
> caused by not having the the sky media inside the cloud box. if I place the
> cloud media in the sky,it must sample the cloud the whole way through the sky
> sphere and looks very bad(even though the s.b.h. is gone).
>
> If someone has a solution i will be forever happy!
>
> thank you
>
>

In real life, there is a blue haze, but you normaly dismiss it without 
even realising it.

You can contain your clouds between large spheres, or under a single 
one, centered well under your ground, possibly flattened.
Single sphere case:
sphere{<0, -50000, 0> 51000 scale<25,1,25> pigment{rgbt 1} hollow}
Center the sphere under the camera location for best effect.

This will make your clouds curve down and "touch" the ground in the 
distance.
It may make your scene more "natural" as we expect the clouds to form a 
kind of very broad dome.

Some clouds, like a cyrus, can effectively be painted on a very large 
sphere. Those clouds are very thin, at very high altitude, typicaly 10 
to 50Km altitude, and look very flat.


Alain


Post a reply to this message

Copyright 2003-2008 Persistence of Vision Raytracer Pty. Ltd.