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Am 24.11.2017 um 14:37 schrieb And:
> Sven Littkowski <I### [at] SvenLittkowskiname> wrote:
>> Hi,
>>
>> a question: is there any public source code that allows us to create
>> cloudy surfaces like that one in the attached photo? I want to do
>> something that I never did before: building cloud cities!
>>
>>
>> ---
>> Diese E-Mail wurde von AVG auf Viren geprüft.
>> http://www.avg.com
>
> Maybe it can be drawn by media(povray) to some extent. Cycles renderer of
> blender should renders better because its volume rendering contains multiple
> scattering calculations.
> For a thin media like atmosphere, single scattering is in the majority, so
> the media of Povray can simulate well. But cloud is heavy media, light
> passing through it can scatter many times, most of the luminance from a cloud
> is from the multiple scattering.
>
> If you want to draw a cloud in PovRay, maybe scattering media + emission media
> can do it, Or ... ?
> Or subsurface scattering material, this feature of Povray calculate both single
> scattering and multiple scattering in the substance, but scattering density of
> the material is limited to constant.
I doubt whether subsurface scattering can be employed to do the trick;
you probably won't get the same "fluffyness".
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