POV-Ray : Newsgroups : povray.binaries.images : Media Wheel : Re: Media Wheel Server Time
13 Aug 2024 11:22:04 EDT (-0400)
  Re: Media Wheel  
From: Tim Cook
Date: 2 May 2003 12:03:31
Message: <3eb296d3$1@news.povray.org>
Philippe Debar wrote:
> The order is quite nice too, with the "symmetries" well chosen. I'll 
> suggest another order which might be easier to read (or might not): 
> starting from 12 o'clock and going clockwise, I'd go
> (0, 0, 0),(0, 0,.5),(0,.5, 0),(.5, 0, 0),(.5,.5, 0),
> (.5, 0,.5),(0,.5,.5),(.5,.5,.5),...
> (if I understood correctly, symmetries will take care of the rest.)

I'm playing around with rearranging them myself now, if it
doesn't turn out well I'll try your variation...or I could
do both. ;)

> Is the the wheel of constant depth and are the media of uniform densities?

Yes.  The wheel is a cylinder with radius of 4 height 1 at 0,0,0,
the media having only the properties of scattering, emission, and/or
absorption with rgb values -0.5, 0.0, or 0.5.

> How is the light located?

The scattered light is located at 0,0,0.5 with fade distance of 1.0
and fade power of 2.0.  There is an additional non-scattering light
at 0,0,20 to provide ambient illumination, with fade distance of 0
and fade power of 1.

> Is the wheel in front of (over) the spheres?

The dot/lines are located 0.5 units over the origin at a distance
of 3.5 units.  The coloured spheres lie at z=0.

> Where do the glows come?

The scattering light is the only light source affected by media,
all glows are properties of the media through which the light is
travelling.

> Is there media outside the wheel?

No.

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------


Post a reply to this message

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