POV-Ray : Newsgroups : povray.general : Direction dependent glass? : Re: Direction dependent glass? Server Time
5 Nov 2024 11:16:51 EST (-0500)
  Re: Direction dependent glass?  
From: Simon Adameit
Date: 19 Apr 2003 16:32:17
Message: <3ea1b251@news.povray.org>
Christopher James Huff wrote:
> In article <3ea0f666$1@news.povray.org>,
>  Simon Adameit <sim### [at] gaussschule-bsde> wrote:
> 
> 
>>Normally glass is modeled with thickness and not just as one surface so 
>>slope or object pattern might be better.
> 
> 
> Neither of those will be of any help in making one-way glass. If you 
> make a box with one side dark and the other side light, you will either 
> see the dark side directly or through the light side. I'm not sure how 
> you plan to use the slope pattern...I think it is idependant of the side 
> of the surface it is evaluated at.

Ah, I didn't think of that. But one could use the slope or object 
pattern in the interior texture.

> Anyway, in a one-way glass window, you are unlikely to be able to tell 
> the difference between thick glass and single-surface glass. With smart 
> lighting and reflection values, you should be able to get an acceptable 
> effect, otherwise using interior_texture or actually changing the 
> texture depending on the camera location is probably the best way to go.
> 

In a one-way glass window you wouldn't need the effect.


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