POV-Ray : Newsgroups : povray.binaries.images : Solar Eclipse Server Time
5 Nov 2024 20:15:30 EST (-0500)
  Solar Eclipse (Message 1 to 6 of 6)  
From: PM 2Ring
Subject: Solar Eclipse
Date: 18 Jun 2006 10:05:00
Message: <web.44955be44dbedead1bd1c060@news.povray.org>
In the Windows message area, "JayDee" <nomail@nomail> wrote:
> please help me ... i'm sorry if it has been already discussed but i don't
> know what to search for. I wanna render some shapes (black objects on the
> black background) behind which may be Light. i need result for example
> looking like eclipse of the sun .. black shape with visible shine around

Here's a fake solar eclipse, using emissive media.

//---------------------------------------------------------------------

// Persistence of Vision Ray Tracer Scene Description File
// File: MediaTestB.pov
// Vers: 3.5
// Desc: Media demo : solar eclipse
// Date:
// Auth: PM 2Ring
//
// +A0.3 +AM2 +R2
//

#version 3.5;

global_settings {assumed_gamma 1.0}

camera {location -16*z look_at 0 angle 30 }

#declare Container_T= texture {
   pigment {rgbt <1,1,1,1>}
   finish {ambient 0 diffuse 0}
}

cylinder{
   3*z, 0, 10
   hollow
   texture {Container_T}
   interior {
      media {
         intervals 15
         samples 1,1
         emission rgb <1, 1, .5> * 1.25
         density{spherical scale 3.275 turbulence 0.15}
      }
   }
}

cylinder{-1e-3*z, -z, 2.0}

background{blue .15}

//---------------------------------------------------------------------


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Attachments:
Download 'mediatestb1s.jpg' (24 KB)

Preview of image 'mediatestb1s.jpg'
mediatestb1s.jpg


 

From: JayDee
Subject: Re: Solar Eclipse
Date: 18 Jun 2006 11:50:00
Message: <web.4495751e30daf152a0363a630@news.povray.org>
THX .. but it doen't look like a SHINE ... its like fog :(


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From: EagleSun
Subject: Re: Solar Eclipse
Date: 20 Jun 2006 17:30:01
Message: <web.449867da30daf152841337530@news.povray.org>
This is a really nice eclipse!  Thanks for posting it.

Now it looks like you need an alpha render, so that later you can change the
background.


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From: PM 2Ring
Subject: Re: Solar Eclipse
Date: 26 Jun 2006 07:50:01
Message: <web.449fc95c30daf1521bd1c060@news.povray.org>
"JayDee" <nomail@nomail> wrote:
> THX .. but it doen't look like a SHINE ... its like fog :(

Sorry, you'll have to explain what you mean by 'shine' a bit better then.


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From: PM 2Ring
Subject: Re: Solar Eclipse
Date: 26 Jun 2006 07:55:00
Message: <web.449fca8a30daf1521bd1c060@news.povray.org>
"EagleSun" <nomail@nomail> wrote:
> This is a really nice eclipse!  Thanks for posting it.

Thanks EagleSun!

Actually, this picture looks quite different on my monitor at work. The
background should be a very deep blue, almost black. (My monitor at home is
a bit strange). You may need to do a gamma correction of around 0.8 to see
it the way it was designed.

> Now it looks like you need an alpha render, so that later you can change the
> background.

That's a good idea, but it renders so fast that it can easily be re-rendered
as desired.

An eclipse simulator in POV... there's an interesting thought...


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From: JayDee
Subject: Re: Solar Eclipse
Date: 29 Jun 2006 11:40:00
Message: <web.44a3f43730daf152a0363a630@news.povray.org>
somethng like THIS:

http://www.ias-observatory.org/CCD/eclipse_01/sofi-enhanced.jpg
http://www.windows.ucar.edu/sun/images/pc_Space_sun_Eclipse.gif


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