POV-Ray : Newsgroups : povray.binaries.images : Problem with Fade_Distance, Fade_Power and Media? (smokey.jpg 52k) : Re: Problem with Fade_Distance, Fade_Power and Media? (smokey.jpg 52k) Server Time
3 Oct 2024 09:27:29 EDT (-0400)
  Re: Problem with Fade_Distance, Fade_Power and Media? (smokey.jpg 52k)  
From: Bob Hughes
Date: 28 Jan 2000 21:19:44
Message: <38924e40@news.povray.org>
I tried a few things out to see what you were getting there and I didn't find a
answer.  Think the media really does just darken based on the scattering amount
(color vector) where 0 is none and transparent, >0 is more and darkened.
'extinction' can help but the main thing seems to be that whether you use lights
or not, or a light with or without media effects, the result looks the same.
Maybe something really is wrong.  Who's to say though?
'media' itself isn't really confined to being a 'light_source' affected thing,
it's more like a object than a substance (whatever word describes media).
Although you could almost make it invisible with the right tweaking of
extinction and emission and absorption it wouldn't be very feasible.  The better
thing to try would be to density map your media using a cylindrical pattern
overall with the original pattern as the dense central part and no density at
the outer part.

Bob

"David Heys" <sou### [at] gcinet> wrote in message
news:38922EC4.8F1A5F7F@gci.net...
| Remco de Korte wrote:
|
| > I don't know what the question was, but this image is one of the most
| > interesting things I've seen here. No idea what it is, but who cares? ;)
|
| As to what the scene is.. Well, it's whatever the viewer wants it to be. So
| far, I've gotten comments that range from "Gigeresque" to "What's with the
| smiling ducks?". <grin> I enjoy the scene and may or may not develop it
| more. It's fairly bare, and I kind of like it that way.
|
| The problem I ran into is how the media has turned from white to black at
| the end of the light source's fade_distance. I'd originally hoped the media
| would fade off as the light did. Instead, the media seemed to inverse its
| color from white to black. I'm not sure this is a bug, or just because I
| didn't add something somewhere. The media is method 3 scattering.
|
| David
| --
| Keeper of the family pets.
| "You want fish? I got fish. I got fish, and eels, and turtles, and snails,
| and frogs, and dragons and cats..."
|
|


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