On 9/23/18 9:20 AM, ttyUSB0 wrote:
> I have a material that creates a shadow of varying density, depending on the
> angle to the direction of the light rays.
> Is it possible to specify a variable transmission of light through the surface,
> depending on the angle of light rays incidence?
> 
> 

sure povray does that ... check out ior to characterize the interior of 
your material. have a look in the docs Reference->Scene File 
Extras->Include Files you'll see ior mentioned in a couple of places. 
look in glass.inc and you'll see how to put together a material 
definition. transmit and filter in pigment is worth looking at...povray 
has subsurface light transport too

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