On 26-1-2019 14:10, ingo wrote:
> in news:5c4c20b9@news.povray.org Thomas de Groot wrote:
> 
>> Proof of concept using different finishes for surface and scratches.
>> Still in flux...
>>
> 
> The scratches are based on the random sticks? If so, try uses extremely
> stretched boxes as sticks to get a sharper 'impression'.

No, on a bump_map. Not a very subtle one I must say but sufficient for 
the purpose.

> 
> Maybe use a gradient 'depth map' texture on the sticks, the scratichg edge
> rgb 1 and going to rgb 0 to the other edges. Vary the rgb 1 on the sharp
> edge for depth variation.

That is a good alternative for making scratch maps, apart from simply 
downloading them from the web :-)

>   
> Render it with orthocam and a light at the camera location.
> 
> ingo
> 


-- 
Thomas

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