On 25-1-2019 19:47, clipka wrote:
> Am 25.01.2019 um 19:29 schrieb Bald Eagle:
>> ingo <ing### [at] tagpovrayorg> wrote:
>>
>>>> This is the best I can do presently.
>>

>>
>>> Comming along nicely.
>>> It still has a bit of 'leathery' quality to it, less metallic. Maybe 
>>> it's
>>> the size/width of the scratches that give that impression,
>>>
>>> ingo
>>
>> Yes, I would say that probably the real test would be something like a
>> transparent piece of plastic or a dark plastic/glass, where there are 
>> in reality
>> a lot of scratches, but optically, only a few of these are ever really 
>> visible
>> at any given time - depending on the viewing angle.
>>
>> So, sparser, finer scratches, and perhaps an animation where the 
>> object is
>> rotated a bit to see how a changing incident light angle affects the 
>> look.
> 
> I think one important feature overlooked so far may be that the 
> scratches are presumably rough (in all directions, not only in cross 
> section), while the remainder of the surface is rather smooth; so you'd 
> either need different finish properties for the scratches (with larger 
> highlights), or you'd have to somehow add a bit of noise to the scratches.

Gentlemen, you are perfectly correct regarding these suggestions. We now 
enter the domain of subtlety and craftiness indeed. Let's see what we 
all come up with.

-- 
Thomas

Post a reply to this message