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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](/povray.binaries.images/attachment/%3Cweb.44955be44dbedead1bd1c060%40news.povray.org%3E/mediatestb1s.jpg?ttop=443866&toff=4400&preview=1)
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"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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