POV-Ray : Newsgroups : povray.binaries.images : Re: Subsurface Scattering: macro now available (21kb jpeg) Server Time
12 Aug 2024 03:29:21 EDT (-0400)
  Re: Subsurface Scattering: macro now available (21kb jpeg) (Message 1 to 2 of 2)  
From: Mike Williams
Subject: Re: Subsurface Scattering: macro now available (21kb jpeg)
Date: 30 Nov 2003 07:41:15
Message: <3fc9e56b@news.povray.org>
I've found out what I was doing wrong previously with the colours of the sss
objects. What was happening was that I hadn't noticed that the macro
requires the target object to be centred at the origin. In the previous
version of the image over 100% of the trace() operations were missing the
eyeballs and lips objects. I now translate the objects to the origin,
perform the sss, then translated them back. Due to the irregular shape of
the objects about 97% of the trace() operations performed by the macro still
miss the object, so I added a tweak to my copy of the macro to omit the tens
of thousands of blob components that are centred at the origin.


Post a reply to this message


Attachments:
Download 'JudySS2.jpg' (43 KB)

Preview of image 'JudySS2.jpg'
JudySS2.jpg


 

From: Mack Tuesday
Subject: Re: Subsurface Scattering: macro now available (21kb jpeg)
Date: 30 Nov 2003 18:20:01
Message: <web.3fca7b1a54d5518c543aa38d0@news.povray.org>
This is really looking good so far.  I hope you keep posting your
improvements to the model, because I'm looking forward to seeing how it
turns out.

Mike Williams wrote:
>I've found out what I was doing wrong previously with the colours of the sss
>objects. What was happening was that I hadn't noticed that the macro
>requires the target object to be centred at the origin. In the previous
>version of the image over 100% of the trace() operations were missing the
>eyeballs and lips objects. I now translate the objects to the origin,
>perform the sss, then translated them back. Due to the irregular shape of
>the objects about 97% of the trace() operations performed by the macro still
>miss the object, so I added a tweak to my copy of the macro to omit the tens
>of thousands of blob components that are centred at the origin.
>


Post a reply to this message

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