Box with texture

  texture {
    pigment { color rgb 1 }
    finish { diffuse 1 brilliance 0 }
  }

is lighten with light_source color rgb 1

with assumed_gamma 2.0 (and simmilar 1.0)

shound't this have rgb <255,255,255> in rendered image ? (image is simple - 
no fog, no radiosity etc) it has something about (220,220,220) or even 
darker

is this o.k. to use objects with pigment color rgb 1.5 ?

-- 

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In article <Xns### [at] 204213191226>,
 "Rafal 'Raf256' Maj" <raf### [at] raf256com> wrote:

> with assumed_gamma 2.0 (and simmilar 1.0)

The manual recommends using assumed_gamma 1 for new scenes.


> shound't this have rgb <255,255,255> in rendered image ? (image is simple - 
> no fog, no radiosity etc) it has something about (220,220,220) or even 
> darker

Pure white pigment, pure white light source, a diffuse of 1 and a 
brilliance of 0...there must be something else in the scene that makes 
it give this result. Could you post a minimal scene demonstrating this?


> is this o.k. to use objects with pigment color rgb 1.5 ?

Light values above 1 are perfectly acceptable. Even negative values are 
allowed, though they don't correspond to any real-world effect. Pigment 
values above 1 (or even equal to 1) aren't realistic, but they are 
allowed.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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in news:Xns### [at] 204213191226 Rafal 'Raf256' Maj 
wrote:

> shound't this have rgb <255,255,255> in rendered image ?

depends on the angle the light_source makes with the box.

Ingo

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ingo <ing### [at] homenl> wrote in news:Xns### [at] povrayorg:

>> shound't this have rgb <255,255,255> in rendered image ?
> depends on the angle the light_source makes with the box.

with brilliance 0 alsow ?

-- 

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in news:Xns### [at] 204213191226 Rafal 'Raf256' Maj 
wrote:

>>> shound't this have rgb <255,255,255> in rendered image ?
>> depends on the angle the light_source makes with the box.
> 
> with brilliance 0 alsow ?
> 

Sorry, my reply was inaccurate.

With ambient 1 the object should always be bright white, even if there 
is no light_source and independent of the brilliance (and 
assumed_gamma). And it is. Dit you check the pixel value with a color 
picker or with a hex-viewer. I did the latter and the result is FF.

Regarding 'brilliance 0', noting is mentioned in the docs. Maybe someone 
could have a peek at the source and tell us what it does.

Ingo

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In article <Xns### [at] povrayorg>, ingo <ing### [at] homenl> 
wrote:

> Regarding 'brilliance 0', noting is mentioned in the docs. Maybe someone 
> could have a peek at the source and tell us what it does.

A brilliance value of 0 should turn off all shading from direct light 
(surface shading because of the angle of incoming light to the surface 
normal). There is nothing in the given code that would explain a result 
that wasn't pure white, which is why I asked for additional code.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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