POV-Ray : Newsgroups : povray.advanced-users : Isosurface threshold 0..1 : Re: Isosurface threshold 0..1 Server Time
20 Apr 2024 11:12:38 EDT (-0400)
  Re: Isosurface threshold 0..1  
From: Mike Horvath
Date: 24 Nov 2016 13:02:07
Message: <58372b1f$1@news.povray.org>
On 11/24/2016 12:40 PM, Mike Horvath wrote:
> This produces similar results as before, except it looks like someone
> has been chewing on it. Compare the two images I attached.
>
> Also, I don't really know what I am doing, but taking the abs of each
> component separately seems wrong. Rather, a color should be considered
> "bad" if any of R, G or B are outside 0..1 range. Clamping R, G and B
> should also not be done.
>
> (This is very frustrating for me.)
>
> :(
>
> Mike
>

I guess I should explain this better. If I take the LCH coordinate <50, 
50, 180> and convert it to RGB, the result is <-0.84558, 0.54573, 
0.46120>. Since one of the components is outside the range 0..1, the 
coordinate is out of gamut. This should not be clamped to <0.00000, 
0.54573, 0.46120>.

Mike


Post a reply to this message

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