Hi,

Does anyone know how I can create a nice transparant plastic?

Thanks!

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On Fri, 8 Nov 2002 17:44:22 +0100, "J Tellings" <j_t### [at] hotmailcom>
wrote:
> Hi,

Hi

> Does anyone know how I can create a nice transparant plastic?

http://news.povray.org/povray.binaries.images/13881/

ABX

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In article <3dcbe9e3$1@news.povray.org>,
 "J Tellings" <j_t### [at] hotmailcom> wrote:

> Does anyone know how I can create a nice transparant plastic?

You need to be a little more specific...do you want Plexiglass or Lexan? 
Saran wrap? Cellophane? The injection molded brittle stuff 
(polystyrene?) that they use for CD jewel cases? What kind of object are 
you trying to do?
If you look in the include files, there are several transparent plastic 
textures. You could start with a glass texture and use soft highlights, 
angle dependant reflection might also help.

-- 
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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"J Tellings" <j_t### [at] hotmailcom> wrote in message
news:3dcbe9e3$1@news.povray.org...
> Hi,
>
> Does anyone know how I can create a nice transparant plastic?
>

It's a fairly complex industrial process, but most good modelling shops will
sell resin kits (you just mix two liquids iirc). Don't try and make ashtrays out
of it though....

The stuff looks a bit like this:

  texture{
    pigment{rgbf 1}
    finish{
      reflection{fresnel on}
    }
  }
  interior{
    ior 1.5
  }

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Tom Melly <tom### [at] tomandlucouk> wrote:
>     ior 1.5

  That looks like glass, not plastic.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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Warp wrote:
> 
> Tom Melly <tom### [at] tomandlucouk> wrote:
> >     ior 1.5
> 
>   That looks like glass, not plastic.

Plastic has no refraction index?

-- 
Ken Tyler

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Ken <tyl### [at] pacbellnet> wrote:
>> >     ior 1.5
>> 
>>   That looks like glass, not plastic.

> Plastic has no refraction index?

  Of course it has, but I would be really surprised if it would be the
same as glass has.

-- 
#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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Warp wrote:
> 
> >> >     ior 1.5
> >>
> >>   That looks like glass, not plastic.
> 
> > Plastic has no refraction index?
> 
>   Of course it has, but I would be really surprised if it would be the
> same as glass has.

consts.inc:

#declare Plexiglas_Ior = 1.5;

Other polymers of course can have different iors but in the same range.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 02 Nov. 2002 _____./\/^>_*_<^\/\.______

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In article <3dce9096@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   Of course it has, but I would be really surprised if it would be the
> same as glass has.

Depends on the plastic. "Plastic" and "glass" are far too imprecise, but 
the range of iors in plastics is probably wider than that of glasses. I 
know polycarbonate plastics can have an ior of up to 1.6. I've seen 
plastic lenses for eyeglasses with an ior of 1.66 (maybe a kind of 
polycarbonate). Plastics do usually have a lower ior though.
Don't confuse optical density with real density.

-- 
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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"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3DCE9270.1C488F4C@gmx.de...
>
>
> Warp wrote:
> >
> > >> >     ior 1.5
> > >>
> > >>   That looks like glass, not plastic.
> >
> > > Plastic has no refraction index?
> >
> >   Of course it has, but I would be really surprised if it would be the
> > same as glass has.
>
> consts.inc:
>
> #declare Plexiglas_Ior = 1.5;
>

Nyah, nyah, n-nyah nyah.

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