POV-Ray : Newsgroups : povray.binaries.animations : Re: Sundial and shadow problem Server Time
12 May 2021 04:17:55 EDT (-0400)
  Re: Sundial and shadow problem (Message 1 to 3 of 3)  
From: Subclick
Subject: Re: Sundial and shadow problem
Date: 6 Jan 2021 22:01:49
Message: <87czyhtppn.fsf@sp.am>
"Kenneth" <kdw### [at] gmailcom> writes:
> After reading the various suggestions here, I
> experimented with different
> set-ups, and finally found one that works. It uses
> two light sources: a
> shadowless one in a light_group with the large
> horizonal disc, and another light
> for everything else. The no_shadow flag is not
> needed in any of the objects.

I’ve tried that out, too.  With a shadowless light source, you don’t get
highlights.  You can remedy this by setting “no_shadow” for both the
wall and the gnomon, and putting the former in a light group with a
negative-intensity light source projected through the gnomon.


Post a reply to this message


Attachments:
Download 'sundial.mpg' (658 KB) Download 'us-ascii' (1 KB)

From: William F Pokorny
Subject: Re: Sundial and shadow problem
Date: 7 Jan 2021 09:08:17
Message: <5ff715d1@news.povray.org>
On 1/6/21 10:01 PM, Subclick wrote:
...
> 
> I’ve tried that out, too.  With a shadowless light source, you don’t get
> highlights.  You can remedy this by setting “no_shadow” for both the
> wall and the gnomon, and putting the former in a light group with a
> negative-intensity light source projected through the gnomon.
...
> 

A clever approach!

Bill P.


Post a reply to this message

From: kurtz le pirate
Subject: Re: Sundial and shadow problem
Date: 7 Jan 2021 13:11:47
Message: <5ff74ee3$1@news.povray.org>
Hello,


You can look the result with the kenneth's method here :
<http://louisbel.free.fr/wip/sundial.html>

Very close to Subclick LOL


-- 
Kurtz le pirate
Compagnie de la Banquise


Post a reply to this message

Copyright 2003-2021 Persistence of Vision Raytracer Pty. Ltd.