Hi, people.

I'd like to produce some kind of street lamp, but it has some special kind
of glass, I can't produce...
You should not be able to look through it, it should have a white color, and
it should let the light through. And if there's light on the other side of
the glass shining in the camera's direction, it should be visible on the
glass....
(This glass is used in these detective-films, for example; maybe you know
these office-doors with the white glass and the black text on it....)

Please help me

Thanks in advance
Wolfgang

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In article <39048d24@news.povray.org>, "Wolfgang Illmeyer" 
<wol### [at] gmxnet> wrote:

> I'd like to produce some kind of street lamp, but it has some special 
> kind of glass, I can't produce...
> You should not be able to look through it, it should have a white 
> color, and it should let the light through. And if there's light on 
> the other side of the glass shining in the camera's direction, it 
> should be visible on the glass.... (This glass is used in these 
> detective-films, for example; maybe you know these office-doors with 
> the white glass and the black text on it....)

This isn't the best group to ask about this, you would get a better 
response by asking in povray.newusers or povray.advanced-users.
Anyway, this sounds like ground glass. There are several ways you could 
do it, here are the three that I can think of right now:
1: Use a normal scaled very small and a partially transparent pigment, 
and use high anti-aliasing settings. This can be hard to get right, 
though.
2: Use a mostly opaque texture, but use double_illuminate. This requires 
MegaPOV, though.
3: Instead of a texture, use a thin media container with a scattering 
media. This can be slow, especially if you don't use method 3 from 
MegaPOV, but would probably give the best results.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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>> I'd like to produce some kind of street lamp, but it has some special kind
>> of glass, I can't produce...
>> You should not be able to look through it, it should have a white color, and
>> it should let the light through. And if there's light on the other side of
>> the glass shining in the camera's direction, it should be visible on the
>> glass....
>> (This glass is used in these detective-films, for example; maybe you know
>> these office-doors with the white glass and the black text on it....)
>
> This isn't the best group to ask about this

In fact, it is the wrong group to ask this.  Please take the time and read
the message  "Welcome To the POV-Ray News Groups" in the povray.announce.
frequently-asked-questions group.

    Thorsten

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> > This isn't the best group to ask about this
>
> In fact, it is the wrong group to ask this.  Please take the time and read
> the message  "Welcome To the POV-Ray News Groups" in the povray.announce.
> frequently-asked-questions group.
>
>     Thorsten

How should I have known that? There are so many messages around... I just
searched for the word "glass" in here, and since I didn't find anybody, who
has had the same question as me, I posted it. Maybe you'd like to save some
of the resources of the news server, and next time not tell me a second time
that I'm in the wrong group.

Thank you very much.

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Wolfgang Illmeyer wrote:
> 
> > > This isn't the best group to ask about this
> >
> > In fact, it is the wrong group to ask this.  Please take the time and read
> > the message  "Welcome To the POV-Ray News Groups" in the povray.announce.
> > frequently-asked-questions group.
> >
> >     Thorsten
> 
> How should I have known that?

We don't expect everyone to know that when they first visit the news
server. That is why we have taken the time to put together information
in the Announcement group that we can point people to when they are
new around here. When Thorsten pointed you to the "Welcome To the
POV-Ray News Groups" message he did so politely and in an attempt to
help you get the most from these groups. We are trying to get people
to post their messages in the appropriate groups to help keep the
content organized for everyone.

Thank you for your co-operation,

-- 
Ken Tyler - POV-Ray Technical Assistance Group Member

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It is called "frosted glass". And it is usually bumpy.


Wolfgang Illmeyer wrote:
> 
> Hi, people.
> 
> I'd like to produce some kind of street lamp, but it has some special kind
> of glass, I can't produce...
> You should not be able to look through it, it should have a white color, and
> it should let the light through. And if there's light on the other side of
> the glass shining in the camera's direction, it should be visible on the
> glass....
> (This glass is used in these detective-films, for example; maybe you know
> these office-doors with the white glass and the black text on it....)
> 
> Please help me
> 
> Thanks in advance
> Wolfgang

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