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I'd like to know more about the pattern projection example shown in the
mlpov manuel (3.3.3). The one with the Buddha.
Is the buddha a real object (mesh object) or is it just a flat-picture.
And what's the use of this features. What's the output and how it works ?
Thanks
Tommy
The 1st African citizen POV member !
==================
http://www.webkenya.com/
Promote Web Development in Africa
WWW = Western or World Wide Web ??
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From: Mael
Subject: Re: mlpov - pattern projection with normal and texture??
Date: 22 Oct 2003 04:05:54
Message: <3f963a62$1@news.povray.org>
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Hello tommy,
> Is the buddha a real object (mesh object) or is it just a flat-picture.
> And what's the use of this features. What's the output and how it works ?
Yes the buddha is a mesh
(http://www.cc.gatech.edu/projects/large_models/happy.html)
The projection pattern sends a ray and tests if this ray have intersected a
given object. The direction of the ray can be :
-toward a point,
-in a direction (keyword parallel),
-in the direction of the normal (keyword normal).
You can also use the keyword blur to average multiple jittered rays cast
around the choosen direction.
The example you're asking about uses (for the buddha object) a projection
along the normal, of the buddha object, with some blur. At each intersection
point we send a bunch of rays, near the normal, and if we don't hit another
part of the buddha then we're at 0 and the more we hit the buddha the closer
we are to 1. Those values are then used by the texture_map.
Another usage of the projection :
http://news.povray.org/povray.binaries.images/29568/
M
PS: There is a newsgroup povray.unofficial.patches to ask questions
regarding unofficial versions of povray
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From: Marc Jacquier
Subject: Re: mlpov - pattern projection with normal and texture??
Date: 22 Oct 2003 05:01:30
Message: <3f96476a@news.povray.org>
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web.3f962d0e7e691dcfa472d3920@news.povray.org...
> Tommy
> The 1st African citizen POV member !
> ==================
Errr may be but you are at last two :)
http://www.oyonale.com/iss/english/makingof_5.htm
I suggest you to deal an African POV-Bouffe with Mark, that could be
interesting ;-)
Marc
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Marc Jacquier wrote:
>>The 1st African citizen POV member !
>>==================
>
> Errr may be but you are at last two :)
> http://www.oyonale.com/iss/english/makingof_5.htm
> I suggest you to deal an African POV-Bouffe with Mark, that could be
> interesting ;-)
You are forgetting about Gail Shaw and Nekar Xenos - although i have not
seen one of them here recently.
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 2 Sep. 2003 _____./\/^>_*_<^\/\.______
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Christoph Hormann wrote:
>Marc Jacquier wrote:
>>>The 1st African citizen POV member !
>>>==================
>> Errr may be but you are at last two :)
>> http://www.oyonale.com/iss/english/makingof_5.htm
>> I suggest you to deal an African POV-Bouffe with Mark, that could be
>> interesting ;-)
>
>You are forgetting about Gail Shaw and Nekar Xenos - although i have not
>seen one of them here recently.
I'm African too! (Waves hand in the air) Although I live in America, I am
not yet an American citizen. When I do get citizenship I will be a WHITE
African American!! ROTFL.
Cheers
Eddie
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From: Samuel Benge
Subject: Re: mlpov - pattern projection with normal and texture??
Date: 22 Oct 2003 12:33:54
Message: <3F96B16F.2090801@hotmail.com>
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Mael wrote:
> You can also use the keyword blur to average multiple jittered rays cast
> around the choosen direction.
It seems to me this might be useful for simulating subsurface scattering.
--
Samuel Benge
stb### [at] hotmail com
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Thanks for the explanation... I can try doing some tests
> The 1st African citizen POV member !
> ==================
> Errr may be but you are at last two :)
> http://www.oyonale.com/iss/english/makingof_5.htm
> I suggest you to deal an African POV-Bouffe with Mark, that could be
> interesting ;-)
Yeah, I need to change this to : One African citizen POV member !
Regarding the POV-Bouffe, I would be prefer to have a space-bouffe than an
African-bouffe.
>I'm African too! (Waves hand in the air). Although I live in America, I am
>not yet an American citizen. When I do get citizenship I will be a WHITE
>African American!! ROTFL.
Well, I am not African (I am French). I live in Kenya but I am not yet a
Kenyan citizen. Need to have at least 10 years of residence to ask for a
Kenyan citizenship (still 3 years to come)...
Cheers
Tommy
One African citizen POV member !
==================
http://www.webkenya.com/
Promote Web Development in Africa
WWW = Western or World Wide Web ??
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