> On Fri, 13 Feb 2015 11:11:39 +0200, Le_Forgeron <lef### [at] freefr> wrote:
>

>>> What's the ior for glucose sweets(hard candy)? like Beacon Sparkles
>>> or candy
>>> rolls. I haven't been very successful in getting a realistic candy
>>> render.
>>>
>>> -Nekar Xenos-
>>>
>>>
>> It seems that 84% sucrose solution in water has ior about 1.5 (whereas
>> water is 1.33), so solid sugar might be around 1.5 to 1.56.
>>
>> Now the problem might be the laminated sugar on sweets: you might have
>> to model an opaque core within a surrounding sugar coating.  And here
>> come the problem of coincident inner surface (not a problem, just no
>> inner surface for the coating)
>>
>> the coating might be about a millimetre deep. Remember to increase
>> max_trace_level.
>>
>> I wonder if the Subsurface scattering can be used to model that instead.
>>
> Thanks, Le Forgeron,
> I didn't consider the sugar coating. Subsurface scattering might be
> overkill. Or it might just be the thing that makes it look more realistic.
>

Clear candy coating, or clear candy, should be transparent and don't 
need subsurface scattering.

If you want an opaque candy, then, subsurface scattering looks like it's 
a must.


Alain

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