Op 18/12/2019 om 08:35 schreef Thomas de Groot:
> Op 18/12/2019 om 00:50 schreef tmelram:
>> Hi, I'm trying to create a movie projector and have it project an 
>> image onto
>> onto other surfaces. I'd also like to have a cone shape volumetric 
>> effect for
>> the dust in the air near the projector. How would I go about this in 
>> POV Ray?
>>
>>
> 
> Just thinking aloud, I would suggest to try the following:
> 
> 1) use a spot light
> 2) as an image, use a plane/box intersection with an appropriate 
> image_map, using some transparency
> 3) test how this projects upon a white screen (thin box or equivalent); 
> probably not good enough (see below)
> 4) for dust in the air, use an isotropic scattering media
> 
> I don't know how this would work out, especially the projection on the 
> screen. You might probably need to add/construct a lens with an 
> appropriate interior and especially ior.
> 

Something I forgot to mention: photons might be what you want to use too.

-- 
Thomas

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