POV-Ray: Newsgroups: povray.newusers: Soft shadows

POV-Ray : Newsgroups : povray.newusers : Soft shadows		Server Time 31 Oct 2025 06:29:19 EDT (-0400)

From: bancquart sebastien
Subject: Soft shadows
Date: 8 Mar 2005 17:22:07
Message: <422e258f@news.povray.org>

Hi all.

I'm rather new to POV (about 1 month) and I am trying to do soft shadows.
For that, I used the area_light option. This softens the shadows, increases 
the computation time, but generates a very "grainy" shadow.

Is there a trick to avoid it ?

To see the result of my first tries, look at :
http://croquis.over-blog.com/article-171375-6.html

(the texture on the wall is only a white pigment, no normal or other 
effects...)

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From: Rick Measham
Subject: Re: Soft shadows
Date: 8 Mar 2005 18:05:00
Message: <422e2f9c$1@news.povray.org>

bancquart.sebastien wrote:
> Hi all.
> 
> I'm rather new to POV (about 1 month) and I am trying to do soft shadows.
> For that, I used the area_light option. This softens the shadows, increases 
> the computation time, but generates a very "grainy" shadow.
> 
> Is there a trick to avoid it ?
> 
> To see the result of my first tries, look at :
> http://croquis.over-blog.com/article-171375-6.html

I'm not noticing the 'grainy' look there ... but I know the look you 
mean. I found that increasing the number of lights in the area light 
will give a much less grainy shadow but doesn't increase the render time 
considerably.

Cheers!
Rick

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From: Warp
Subject: Re: Soft shadows
Date: 8 Mar 2005 18:40:54
Message: <422e3806@news.povray.org>

Rick Measham <nomail@nomail> wrote:
> I found that increasing the number of lights in the area light 
> will give a much less grainy shadow but doesn't increase the render time 
> considerably.

  But only if you use adaptive supersampling (which you should, of course).

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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From: bancquart sebastien
Subject: Re: Soft shadows
Date: 9 Mar 2005 01:30:44
Message: <422e9814@news.povray.org>

Thanks for your help.

I tried with a huge number of lights (25*25) and it's peeeeeeeeeeerfect !

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From: Marc Jacquier
Subject: Re: Soft shadows
Date: 9 Mar 2005 02:57:22
Message: <422eac62$1@news.povray.org>


message de news:422e9814@news.povray.org...
> Thanks for your help.
>
> I tried with a huge number of lights (25*25) and it's peeeeeeeeeeerfect !
>
It is not to divert you from news.povray.org , of course, but
Do you know the french speaking POV-Ray group?
news://news.zoo-logique.org/3D.Pov-Ray

In your newsreader count/server configuration  you must check "ouverture de
session requise" and
enter a user name : zoo
and a password : entrer

You are welcome :)

Marc

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From: bancquart sebastien
Subject: Re: Soft shadows
Date: 9 Mar 2005 13:14:21
Message: <422f3cfd@news.povray.org>

I didn't know it, but will look at it. Thanksalot !

422eac62$1@news.povray.org...
>

> message de news:422e9814@news.povray.org...
>> Thanks for your help.
>>
>> I tried with a huge number of lights (25*25) and it's peeeeeeeeeeerfect !
>>
> It is not to divert you from news.povray.org , of course, but
> Do you know the french speaking POV-Ray group?
> news://news.zoo-logique.org/3D.Pov-Ray
>
> In your newsreader count/server configuration  you must check "ouverture 
> de
> session requise" and
> enter a user name : zoo
> and a password : entrer
>
> You are welcome :)
>
> Marc
>
>
>

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