POV-Ray : Newsgroups : povray.off-topic : Random graphics paper Server Time
1 Nov 2024 23:14:43 EDT (-0400)
  Random graphics paper (Message 1 to 7 of 7)  
From: Invisible
Subject: Random graphics paper
Date: 7 Feb 2011 11:49:51
Message: <4d5022af$1@news.povray.org>
http://www.valvesoftware.com/publications/2010/siggraph2010_vlachos_waterflow.pdf

Significantly less impressive than you'd think. Check out page #3, for 
example. It appears to be merely a trivial repeating texture. There's no 
hint of all the complexity that the paper claims goes into generating 
this...


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From: Darren New
Subject: Re: Random graphics paper
Date: 7 Feb 2011 13:05:03
Message: <4d50344f$1@news.povray.org>
Invisible wrote:
> http://www.valvesoftware.com/publications/2010/siggraph2010_vlachos_waterflow.pdf 
> 
> 
> Significantly less impressive than you'd think. Check out page #3, for 
> example. It appears to be merely a trivial repeating texture.

It *is* a trivial repeating texture, when static. See page 9.

> There's no 
> hint of all the complexity that the paper claims goes into generating 
> this...

Probably because it's not animated, and thus a dynamic flow of water isn't 
going to be obvious in a printed paper.

Thanks for the paper, tho. That's interesting.

-- 
Darren New, San Diego CA, USA (PST)
  "How did he die?"   "He got shot in the hand."
     "That was fatal?"
          "He was holding a live grenade at the time."


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From: Orchid XP v8
Subject: Re: Random graphics paper
Date: 7 Feb 2011 16:04:14
Message: <4d505e4e$1@news.povray.org>
On 07/02/2011 06:05 PM, Darren New wrote:

> Probably because it's not animated, and thus a dynamic flow of water
> isn't going to be obvious in a printed paper.

Yeah, that was my conclusion too.

> Thanks for the paper, tho. That's interesting.

I'm still waiting to see a water system where the ripples reflect off 
obsticles in the water. I mean, hell, it can't be *that* hard to fake 
such an effect, even if solving the wave equation for real is too 
expensive...

Then again, I'd also like to see water that *isn't* a mathematically 
flat plane. :-P

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*


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From: Stephen
Subject: Re: Random graphics paper
Date: 7 Feb 2011 17:36:38
Message: <4d5073f6$1@news.povray.org>
On 07/02/2011 9:04 PM, Orchid XP v8 wrote:
> I'm still waiting to see a water system where the ripples reflect off
> obsticles in the water. I mean, hell, it can't be *that* hard to fake
> such an effect, even if solving the wave equation for real is too
> expensive...
>
> Then again, I'd also like to see water that *isn't* a mathematically
> flat plane. :-P

Tim Nikias did a water simulation some time back. It is a 3D SDL one.
It can be found at http://www.nolights.de/downloads.html#lssm


-- 
Regards
     Stephen


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From: Darren New
Subject: Re: Random graphics paper
Date: 7 Feb 2011 18:58:43
Message: <4d508733$1@news.povray.org>
Stephen wrote:
> Tim Nikias did a water simulation some time back. It is a 3D SDL one.
> It can be found at http://www.nolights.de/downloads.html#lssm

Wrong group! Wrong group!  You must stay off topic! ;-)

-- 
Darren New, San Diego CA, USA (PST)
  "How did he die?"   "He got shot in the hand."
     "That was fatal?"
          "He was holding a live grenade at the time."


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From: scott
Subject: Re: Random graphics paper
Date: 8 Feb 2011 03:32:22
Message: <4d50ff96$1@news.povray.org>
> I'm still waiting to see a water system where the ripples reflect off
> obsticles in the water. I mean, hell, it can't be *that* hard to fake
> such an effect, even if solving the wave equation for real is too
> expensive...

I think there was a boat racing game recently that did this (the boats 
affected and got effected by the waves).  Simulating the wave equation 
(or a good approximation of it) is quite easy to do now on the GPU 
thanks to being able to use texture lookups in a vertex shader.  Having 
it interact with other objects seems a simple case of having an 
additional 2D texture to show where objects are, and then using that as 
you're solving the wave equation.


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From: Stephen
Subject: Re: Random graphics paper
Date: 8 Feb 2011 04:33:52
Message: <4d510e00$1@news.povray.org>
On 07/02/2011 11:58 PM, Darren New wrote:
> Stephen wrote:
>> Tim Nikias did a water simulation some time back. It is a 3D SDL one.
>> It can be found at http://www.nolights.de/downloads.html#lssm
>
> Wrong group! Wrong group! You must stay off topic! ;-)
>

Mea culpa.

Mea maxima culpa ;-)

-- 
Regards
     Stephen


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