POV-Ray : Newsgroups : povray.binaries.images : Io : Re: Io Server Time
3 Aug 2024 06:17:08 EDT (-0400)
  Re: Io  
From: Bill Pragnell
Date: 31 Jan 2007 11:40:00
Message: <web.45c0c522fa3b26c2731f01d10@news.povray.org>
"Gail Shaw" <initialsurname@sentech sa dot com> wrote:
> How did you do the stars then? That's probably one of the best starfields
> I've seen done wih povray.

Oh, I see. Thanks! It's just a granite pattern on a big hollow sphere. Set
ambient to 1, and use a color_map a bit like this:

#declare a = 0.05;
color_map {
  [0 color White]
  [a color White]
  [a+a/100 color Black]
  [1 color Black] }

Alter a to make the stars more/less visible, scale the pattern to space them
out. The trick is to tweak the balance for your final resolution and
antialias settings.

Bill


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.