POV-Ray : Newsgroups : povray.binaries.images : SSLT test Server Time
30 Jul 2024 06:27:06 EDT (-0400)
  SSLT test (Message 5 to 14 of 54)  
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From: Robert McGregor
Subject: Re: SSLT test
Date: 24 Jan 2014 09:15:03
Message: <web.52e2751feff39d8691114470@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 23.01.2014 00:30, schrieb Robert McGregor:
>
> > I used these two images to slowly morph between lit and unlit in a minimalist,
> > looping animation in order to truly appreciate the effect SSLT has on the block.
>
> So, do you like it? :-)

I love it, you did a great job implementing this feature Christoph. The "new"
method of specifying a translucency color is so much more intuitive than using
the original (arcane) coefficients for scattering/absorbing.

Wish-List Request: the ability to save and load SSLT data to/from a file, like
radiosity and photons already do. Then animations (and stills) could load
pre-calculated data for quicker renders.

Here's the Stanford bunny replacing the superellipsoid. Can't stop playing with
this...

-------------------------------------------------
www.McGregorFineArt.com


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From: clipka
Subject: Re: SSLT test
Date: 24 Jan 2014 15:01:33
Message: <52e2c69d$1@news.povray.org>
Am 24.01.2014 15:13, schrieb Robert McGregor:

> Wish-List Request: the ability to save and load SSLT data to/from a file, like
> radiosity and photons already do. Then animations (and stills) could load
> pre-calculated data for quicker renders.

That would require SSLT data to be cached in the first place, akin to 
radiosity, which it currently isn't ;-)

Has been on my SSLT To-Do list for ages, but you know how things are... 
haven't gotten a round tuit yet :-P


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From: Robert McGregor
Subject: Re: SSLT test
Date: 24 Jan 2014 15:30:00
Message: <web.52e2cce0eff39d8691114470@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 24.01.2014 15:13, schrieb Robert McGregor:
>
> > Wish-List Request: the ability to save and load SSLT data to/from a file, like
> > radiosity and photons already do. Then animations (and stills) could load
> > pre-calculated data for quicker renders.
>
> That would require SSLT data to be cached in the first place, akin to
> radiosity, which it currently isn't ;-)
>
> Has been on my SSLT To-Do list for ages, but you know how things are...
> haven't gotten a round tuit yet :-P

I believe Thomas has rights to reproduce and distribute those tuits now. As for
the caching and the to-do list, I understand on both points.

Not sure if you've ever seen this, but I was reading recently about Renderman's
subsurface features, based on the same SSLT paper that you used. They bake the
subsurface data into a brick map (which sounds very much like a DF3 to me) that
can be recursively refined; pretty cool:

http://renderman.pixar.com/resources/current/rps/subsurface.html


-------------------------------------------------
www.McGregorFineArt.com


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From: clipka
Subject: Re: SSLT test
Date: 24 Jan 2014 20:33:59
Message: <52e31487$1@news.povray.org>
Am 24.01.2014 21:28, schrieb Robert McGregor:
> clipka <ano### [at] anonymousorg> wrote:

>> Has been on my SSLT To-Do list for ages, but you know how things are...
>> haven't gotten a round tuit yet :-P
>
> I believe Thomas has rights to reproduce and distribute those tuits now.

That would be great. I absolutely need one with SSLT of course.


> Not sure if you've ever seen this, but I was reading recently about Renderman's
> subsurface features, based on the same SSLT paper that you used. They bake the
> subsurface data into a brick map (which sounds very much like a DF3 to me) that
> can be recursively refined; pretty cool:

That brick map thing sounds like what's been described in a follow-up paper.


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From: Thomas de Groot
Subject: Re: SSLT test
Date: 25 Jan 2014 03:09:54
Message: <52e37152$1@news.povray.org>
On 25-1-2014 2:33, clipka wrote:
> Am 24.01.2014 21:28, schrieb Robert McGregor:
>> clipka <ano### [at] anonymousorg> wrote:
>
>>> Has been on my SSLT To-Do list for ages, but you know how things are...
>>> haven't gotten a round tuit yet :-P
>>
>> I believe Thomas has rights to reproduce and distribute those tuits now.
>
> That would be great. I absolutely need one with SSLT of course.

The great thing is that nowadays you can just copy a round tuit for 
yourself (from the threat where I was given one for instance by John), 
you look at the back side and lo! there you will see written what the 
tuit is for ;-) We have come a long long way from the primitive stone 
age tuits made of granite, which you had to drag along behind you.

Thomas


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From: Stephen
Subject: Re: SSLT test
Date: 25 Jan 2014 05:03:08
Message: <52e38bdc$1@news.povray.org>
On 25/01/2014 8:09 AM, Thomas de Groot wrote:
> On 25-1-2014 2:33, clipka wrote:
>> Am 24.01.2014 21:28, schrieb Robert McGregor:
>>> clipka <ano### [at] anonymousorg> wrote:
>>
>>>> Has been on my SSLT To-Do list for ages, but you know how things are...
>>>> haven't gotten a round tuit yet :-P
>>>
>>> I believe Thomas has rights to reproduce and distribute those tuits now.
>>
>> That would be great. I absolutely need one with SSLT of course.
>
> The great thing is that nowadays you can just copy a round tuit for
> yourself (from the threat where I was given one for instance by John),
> you look at the back side and lo! there you will see written what the
> tuit is for ;-) We have come a long long way from the primitive stone
> age tuits made of granite, which you had to drag along behind you.
>

I thought that you had the franchise for the electronic ones, pertaining 
to this NG.

Those primitive stone age tuits made of granite were awfully slow to 
work. Well! So John said, from his experience. ;-)

-- 
Regards
     Stephen


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From: Doctor John
Subject: Re: SSLT test
Date: 25 Jan 2014 06:41:48
Message: <52e3a2fc$1@news.povray.org>
On 25/01/14 10:03, Stephen wrote:
> 
> Those primitive stone age tuits made of granite were awfully slow to
> work. Well! So John said, from his experience. ;-)
> 

You young whippersnapper! Show some respect for your elders!

John
-- 
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children


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From: Thomas de Groot
Subject: Re: SSLT test
Date: 25 Jan 2014 07:21:23
Message: <52e3ac43@news.povray.org>
On 25-1-2014 11:03, Stephen wrote:

> I thought that you had the franchise for the electronic ones, pertaining
> to this NG.

I waived franchise for the greater good of us all :-)

>
> Those primitive stone age tuits made of granite were awfully slow to
> work. Well! So John said, from his experience. ;-)
>
Yes indeed. I am still the happy owner of one of those... with a hole! 
It sits in my garden, all its forces spent.

Thomas


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From: Doctor John
Subject: Re: SSLT test
Date: 25 Jan 2014 07:43:00
Message: <52e3b154$1@news.povray.org>
On 25/01/14 12:21, Thomas de Groot wrote:
> On 25-1-2014 11:03, Stephen wrote:
> 
>> I thought that you had the franchise for the electronic ones, pertaining
>> to this NG.
> 
> I waived franchise for the greater good of us all :-)
> 
>>
>> Those primitive stone age tuits made of granite were awfully slow to
>> work. Well! So John said, from his experience. ;-)
>>
> Yes indeed. I am still the happy owner of one of those... with a hole!
> It sits in my garden, all its forces spent.
> 
> Thomas

Thomas, I envy you. From the looks of it, that has to be one of the
first tuits ever made by hand. As you know, the first ones were found
objects and it was only when Stephen, back in the neolithic era, had the
idea of making them by hand in order to increase the supply that human
productiveness began to increase. Unfortunately, he sold every one that
he made to finance his craving for uisge beatha; consequently he never
managed to corner the market because he never got a round tuit.

John
-- 
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children


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From: Thomas de Groot
Subject: Re: SSLT test
Date: 25 Jan 2014 10:04:40
Message: <52e3d288$1@news.povray.org>
On 25-1-2014 13:42, Doctor John wrote:

> Thomas, I envy you. From the looks of it, that has to be one of the
> first tuits ever made by hand. As you know, the first ones were found
> objects and it was only when Stephen, back in the neolithic era, had the
> idea of making them by hand in order to increase the supply that human
> productiveness began to increase. Unfortunately, he sold every one that
> he made to finance his craving for uisge beatha; consequently he never
> managed to corner the market because he never got a round tuit.

What a sad story indeed. You see that so often: talented people throwing 
away their life for the ephemeral pleasures of artificial paradises. The 
tuit is very eroded but on the reverse side there are still some very 
faint marks that resemble writing of some sort. I seem to recognize a 
'S' rune. Do you think this could be one of Stephen's originals?

Thomas


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