You should post to povray.international.

-- 
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demandez il est difficile de faire.  Si vous savez C ou C++, vous pourriez
modifier le code du POV-rayon pour faire ceci.  Si vous pas , la seule

d'employer cette image.

Chris

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Ger nous apporta ses lumieres ainsi en ce 2004/06/04 10:38... :

>On Friday 04 June 2004 16:04, marc bonnamy wrote :
>
>  
>
>>Bonjour ? toutes et ? tous,
>>
>>dans le cadre d'un projet j'ai besoin de faire de l'analyse d'ombrage ?
>>partir d'un lanceur de rayons. Naturellement on m'a orient? vers POV-RAY
>>que je d?couvre.
>>
>>Je me demande dans quelle mesure il est possible avec Pov-Ray de
>>r?cup?rer des entit?s impact?es par une ombre pour pouvoir apr?s les
>>?crire dans un fichier et ?ventuellement par la suite trait? ces
>>informations ? Pour ?tre plus illustratif, imaginons que selon mon
>>mod?le je projette l'ombre d'un objet sur le "sol".
>>Je souhaiterai pouvoir identifier tous les "?l?ments" recouvert par
>>l'ombre et ?ventuellement la "densit?" de cette ombre.
>>
>>En esp?rant que ma question est compr?hensible, j'attends avidemment
>>tout information.
>>
>>Merci ? la communaut?.
>>
>>Marc.
>>    
>>
>
>I guess there are 1 or 2 persons beside me that have trouble reading this :)
>  
>
Use ISO-8859-1 character set, universal western standard. You are set to 
UTF-8 and it don't recognize accentuated characters.

Alain

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On Friday 04 June 2004 20:32, Alain wrote :

>>
> Use ISO-8859-1 character set, universal western standard. You are set to
> UTF-8 and it don't recognize accentuated characters.
> 
> Alain

I think you misunderstood :). Not everyone here speaks French.
-- 
Ger

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Babblefish gives us English folks this:
Hello with all and all,
within the framework d'un project j'ai need to make l'analyse d'ombrage
leave d'un launcher rays. Naturally one m'a directed towards POV-RAY which I
discover.
I wonder up to what point it is possible with Pov-Ray to recover entities
impacted by a shade to be able after writing them in a file and possibly
thereafter processed these data? To be more illustrative, let us imagine
that according to my model I project l'ombre d'un object on the "sol". I
will wish to be able to identify all the "elements" covered by l'ombre and

I hope that my question is comprehensible, j'attends avidemment any
information. Thank you at the community.
Marc.


"marc bonnamy" <mbo### [at] ausyfr> wrote in message
news:40c0818b@news.povray.org...

>


que

>




> l'ombre d'un objet sur le "sol".

l'ombre

>

> information.
>

>
> Marc.
>
>
>

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Harold nous apporta ses lumieres ainsi en ce 2004/06/04 17:08... :

>Babblefish gives us English folks this:
>Hello with all and all,
>within the framework d'un project j'ai need to make l'analyse d'ombrage
>leave d'un launcher rays. Naturally one m'a directed towards POV-RAY which I
>discover.
>I wonder up to what point it is possible with Pov-Ray to recover entities
>impacted by a shade to be able after writing them in a file and possibly
>thereafter processed these data? To be more illustrative, let us imagine
>that according to my model I project l'ombre d'un object on the "sol". I
>will wish to be able to identify all the "elements" covered by l'ombre and

>I hope that my question is comprehensible, j'attends avidemment any
>information. Thank you at the community.
>Marc.
>
>
>"marc bonnamy" <mbo### [at] ausyfr> wrote in message
>news:40c0818b@news.povray.org...
>  
>

>>


>>    
>>
>que
>  
>

>>




>>l'ombre d'un objet sur le "sol".

>>    
>>
>l'ombre
>  
>

>>

>>information.
>>

>>
>>Marc.
>>
>>
>>
>>    
>>
>
>
>  
>
Hoo! the /Joys/ of automated translation... Whatever the original and 

loony toonesk language.

Alain

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Thank you for you help, and i'm sorry to not speaking and writing a good
english.
Marc


news: 40c0a3aa$1@news.povray.org...

vous
> demandez il est difficile de faire.  Si vous savez C ou C++, vous pourriez
> modifier le code du POV-rayon pour faire ceci.  Si vous pas , la seule

> d'employer cette image.
>
> Chris
>
>

Post a reply to this message

And lo on Fri, 04 Jun 2004 18:02:46 -0400, Alain <aze### [at] qwertygov> did  
spake, saying:

> Harold nous apporta ses lumieres ainsi en ce 2004/06/04 17:08... :
>
>> Babblefish gives us English folks this:
<snip>
> Hoo! the /Joys/ of automated translation... Whatever the original and  

> loony toonesk language.

Lycos's http://translation.lycos.com/ :

Hello with all and all, within the framework of a project I need to
make analysis of shade starting from a launcher of rays. Naturally one
directed me towards POV-RAY which I discover. I wonder up to what
point it is possible with Pov-Ray to recover entities impacted by a
shade to be able after writing them in a file and possibly thereafter
processed these data? To be more illustrative, let us imagine that
according to my model I project the shade of an object on the
"ground". I will wish to be able to identify all the "elements"
covered by the shade and possibly the "density" of this shade. By
hoping that my question is comprehensible, I await any information
avidemment. Thank you at the community. Marc.

Still didn't get avidemment and still a bit looney-toonesk, but still  
sense can be discerned a little better than Babblefish's for future  
reference.

--
Phil Cook

-- 
All thoughts and comments are my own unless otherwise stated and I am  
happy to be proven wrong.

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Program ended abnormally on 07/06/2004 10:20, Due to a catastrophic Phil Cook error:
> And lo on Fri, 04 Jun 2004 18:02:46 -0400, Alain <aze### [at] qwertygov> 
> did  spake, saying:
> 
>> Harold nous apporta ses lumieres ainsi en ce 2004/06/04 17:08... :
>>
>>> Babblefish gives us English folks this:
> 
> <snip>
> 
>> Hoo! the /Joys/ of automated translation... Whatever the original and  

>> beleive"  loony toonesk language.
> 
> 
[snip]

> 
> Still didn't get avidemment and still a bit looney-toonesk, but still  
> sense can be discerned a little better than Babblefish's for future  
> reference.
>




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Here is a hand-made translation ;)


--------------------
For the needs of a project I must perform some shading processing with a
ray-tracer. I was led towards POV-Ray, which I am currently looking at.

I wonder to what extent it's possible to build a file with the list of
objects masked by a shadow, so as to process it later.
As an example let's imagine that I cast the shadow of an object onto the
"floor". I would like to know what "elements" are hit by the shadow, and
possibly the density of the latter.

Hoping my request is clear enough, I'm eagerly waiting for any information
regarding the topic.
--------------------


the "eagerly".


Now some suggestions: maybe the trace () function would help, although you
would have to do some sampling across the floor. And that would work only
with point-light sources (btw, the shadow cast by a single point-light
source is uniform and determined by the ambient parameter of the floor).
Basically, you would reimplement the main loop of the ray-tracer, without
the calculations of course. I think the trace () tutorial in POV's help is
just about writing a ray-tracer within POV-Ray.

Placing the camera straight above the floor to get a flat 2D representation
of it, would also help. You could even make the object (see no_image
modifier), leaving only its shadow.


Bonne chance !
TV


"marc bonnamy" <mbo### [at] ausyfr> wrote:

>



>




> l'ombre d'un objet sur le "sol".


>

> information.
>

>
> Marc.

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