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Hi,
I'm interested start using POV-RAY to create photo-realistic perspective
views of architecture projects. I would receive the autocad files from the
clients and would give them the desired views. I've been studying the
Tutorial (wich is Great!) and I have some questions:
- Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism) the
illumination of a building (or one of its pieces) if I mix the raytracing
and radiosity methods? The textures and the materials work fine in this
approach?
- Suggestions of other softwres to support POV-RAY modeling of the scene?
- Any Methodology to the process? (maybe someone in the list works with
similar stuff)
Other comments are also very welcome.
Thanks,
Rodrigo
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"Rodrigo Almeida" <rod### [at] hotmail com> wrote in message
news:40865001@news.povray.org...
>
> - Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism) the
> illumination of a building (or one of its pieces) if I mix the raytracing
> and radiosity methods? The textures and the materials work fine in this
> approach?
>
In the absence of any other reply, I'd offer a tentative yes to this. The
complication IMHO is that there is no obvious way to know what the realistic
finish would be to simulate the real-life radiosity of any particular material -
e.g. if you want to simulate concrete, what value of diffuse and amibient should
you use?
> - Suggestions of other softwres to support POV-RAY modeling of the scene?
I believe you've already been pointed at some autocad->pov tools - you might
take a look at moray if you want to model other aspects of the scene, but the
pov sdl is really the way to go - it will give you far better access to macros
and utilities written by others, and far better control in the long run.
> - Any Methodology to the process? (maybe someone in the list works with
> similar stuff)
iirc there is a pov-user who does some very impressive architectural renderings
using pov - anyone have a name? a link?
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Rodrigo Almeida <rod### [at] hotmailcom> wrote:
> - Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism) the
> illumination of a building (or one of its pieces) if I mix the raytracing
> and radiosity methods?
No. Raytracing is only an approximation. A pretty good one, but only
an approximation. The stochastic illumination model used with 'radiosity'
is even a rougher approximation of illumination between surfaces. You can
get pretty images, but you can't expect them to be 100% accurate, even if
you have a 100% accurate model of your scene (which in itself is impossible
as well). You can approximate reality quite well, but 100% accuracy is just
not possible.
--
#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 -
Post a reply to this message
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> > - Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism)
the
> > illumination of a building (or one of its pieces) if I mix the
raytracing
> > and radiosity methods?
>
> No. Raytracing is only an approximation. A pretty good one, but only
> an approximation.
SNIP
> You can approximate reality quite well, but 100% accuracy is just
> not possible.
Well, didn't he say that he's not demanding 100% realism? ;-)
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
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Tim Nikias v2.0 <#macro timnikias (@) #local = "gmx.net" #end> wrote:
> > > - Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism)
> Well, didn't he say that he's not demanding 100% realism? ;-)
I somehow misread his statement inside the parentheses so that I
understood it to mean the complete opposite.
Perhaps I'm getting too old for this.
--
#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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> Perhaps I'm getting too old for this.
It depends on what you mean with "this". Reading? Then just get some glasses
and you're good to go. ;-)
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
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From: Rodrigo Almeida
Subject: Re: perspective views of arc projects
Date: 22 Apr 2004 12:14:55
Message: <4087ef7f@news.povray.org>
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"pov sdl" is Pov sdk?
Thanks, I'll take a look at Moray, and for the lighting stuff I think with
the time ans the mistakes I will try to get more intuitive for the effects
and properties of each component...
news:40879311$1@news.povray.org...
>
> "Rodrigo Almeida" <rod### [at] hotmailcom> wrote in message
> news:40865001@news.povray.org...
> >
> > - Is Pov-Ray capable to REALLY predict (I'm not demanding 100% realism)
the
> > illumination of a building (or one of its pieces) if I mix the
raytracing
> > and radiosity methods? The textures and the materials work fine in this
> > approach?
> >
>
> In the absence of any other reply, I'd offer a tentative yes to this. The
> complication IMHO is that there is no obvious way to know what the
realistic
> finish would be to simulate the real-life radiosity of any particular
material -
> e.g. if you want to simulate concrete, what value of diffuse and amibient
should
> you use?
>
> > - Suggestions of other softwres to support POV-RAY modeling of the
scene?
>
> I believe you've already been pointed at some autocad->pov tools - you
might
> take a look at moray if you want to model other aspects of the scene, but
the
> pov sdl is really the way to go - it will give you far better access to
macros
> and utilities written by others, and far better control in the long run.
>
> > - Any Methodology to the process? (maybe someone in the list works with
> > similar stuff)
>
> iirc there is a pov-user who does some very impressive architectural
renderings
> using pov - anyone have a name? a link?
>
>
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"Rodrigo Almeida" <rod### [at] hotmailcom> wrote in message
news:4087ef7f@news.povray.org...
> "pov sdl" is Pov sdk?
>
"pov sdl" refers to the POV-Ray Scene Description Language.
-ross
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In article <4087ef7f@news.povray.org>,
"Rodrigo Almeida" <rod### [at] hotmailcom> wrote:
> "pov sdl" is Pov sdk?
POV-Ray doesn't have a SDK (software development kit). Around here,
"SDL" usually refers to the Scene Description Language.
--
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/
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