POV-Ray : Newsgroups : povray.binaries.images : Moire patterns when trying to create isosurface sphere Server Time
31 Oct 2024 19:34:38 EDT (-0400)
  Moire patterns when trying to create isosurface sphere (Message 21 to 26 of 26)  
<<< Previous 10 Messages Goto Initial 10 Messages
From: Kenneth
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 7 Jan 2019 15:10:01
Message: <web.5c33b14046f01a81cd98345b0@news.povray.org>
"jr" <cre### [at] gmailcom> wrote:
> >
> > Just took a look at COMPATT's previous post about this. Duh.
>
> the clue was in the title!  :-)  (more of a grin ;-))
>
>
The title! Hmm, it must have been written in invisible ink...  :-O


Post a reply to this message

From: Thomas de Groot
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 8 Jan 2019 02:32:14
Message: <5c3451fe$1@news.povray.org>
On 7-1-2019 13:18, jr wrote:
> hi,
> 
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> OK, I guess I understand. I then wonder if the polarity use by Jr to
>> solve COMPATT's problem is correct. My uneducated guess would be 'no'. ;-)
> 
> correct, hence "I'm sure it isn't "the correct way" of doing, but.." result.
> 
> btw, is your computer's clock off by (about) 2 minutes?
> 

LOL

No, not that I am aware of. My clock is synchronised (time.windows.com).

-- 
Thomas


Post a reply to this message

From: jr
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 8 Jan 2019 04:35:01
Message: <web.5c346e7f46f01a8148892b50@news.povray.org>
hi,

Thomas de Groot <tho### [at] degrootorg> wrote:
> On 7-1-2019 13:18, jr wrote:
> > btw, is your computer's clock off by (about) 2 minutes?
> No, not that I am aware of. My clock is synchronised (time.windows.com).

strange, I see a '7 Jan 2019 12:20:01' timestamp for the message you replied to,
while you saw '7-1-2019 13:18'.  why 58 minutes?

(I use uk.pool.ntp.org to provide time)

regards, jr.


Post a reply to this message

From: Thomas de Groot
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 8 Jan 2019 06:52:21
Message: <5c348ef5$1@news.povray.org>
On 8-1-2019 10:33, jr wrote:
> hi,
> 
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> On 7-1-2019 13:18, jr wrote:
>>> btw, is your computer's clock off by (about) 2 minutes?
>> No, not that I am aware of. My clock is synchronised (time.windows.com).
> 
> strange, I see a '7 Jan 2019 12:20:01' timestamp for the message you replied to,
> while you saw '7-1-2019 13:18'.  why 58 minutes?
> 
> (I use uk.pool.ntp.org to provide time)
> 
> regards, jr.
>


I have no idea. The arcane workings of the internet are way beyond my 
understanding. ;-)

thought: I read and write to the povray ngs using Thunderbird. Maybe 
there is a time delay between writing and effective appearance on the 
website?

-- 
Thomas


Post a reply to this message

From: clipka
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 8 Jan 2019 08:34:57
Message: <5c34a701$1@news.povray.org>
Am 08.01.2019 um 10:33 schrieb jr:
> hi,
> 
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> On 7-1-2019 13:18, jr wrote:
>>> btw, is your computer's clock off by (about) 2 minutes?
>> No, not that I am aware of. My clock is synchronised (time.windows.com).
> 
> strange, I see a '7 Jan 2019 12:20:01' timestamp for the message you replied to,
> while you saw '7-1-2019 13:18'.  why 58 minutes?

Such a difference would not be caused by a desynchronized clock on the 
reading computer, because the timestamp is an immutable value in the 
message, created when the message is written. The displaying computer 
may apply an offset based on the timezone it has configured, but that's 
always multiples of 30 minutes, and is independent of the current time 
on the computer. (E.g. you could set your computer's clock off by 7 days 
11 hours and 12 minutes, and the message's timestamp would still only be 
offset by less than 24 hours.)

Thomas' theory that it may be caused by the web frontend has some 
merits: It may be that the web frontend creates its own timestamp when 
it processes the message, and that may well be about 2 minutes after the 
message is originally posted via the NNTP protocol. So the web version 
of the replied-to post may have a different timestamp than the NNTP version.


Post a reply to this message

From: jr
Subject: Re: Moire patterns when trying to create isosurface sphere
Date: 8 Jan 2019 16:00:01
Message: <web.5c350efe46f01a8148892b50@news.povray.org>
hi,

Thomas de Groot <tho### [at] degrootorg> wrote:
> thought: I read and write to the povray ngs using Thunderbird. Maybe
> there is a time delay between writing and effective appearance on the
> website?

that would seem to be the difference (cf clipka's post), I use the web
interface.


regards, jr.


Post a reply to this message

<<< Previous 10 Messages Goto Initial 10 Messages

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