POV-Ray : Newsgroups : povray.binaries.images : An experiment in monochrome : Re: An experiment in monochrome Server Time
19 Jun 2021 20:41:09 EDT (-0400)
  Re: An experiment in monochrome  
From: Paolo Gibellini
Date: 9 Jun 2021 03:08:49
Message: <60c06901$1@news.povray.org>
m@b wrote on 08/06/2021 11:32:
> On 08/06/2021 4:24 pm, Mr wrote:
>> "m@b" <sai### [at] googlemailcom> wrote:
>>> Trying to emulate mechanical shading.
>>>
>>> m@
>>
>> Nice!
>> How does it work?
>>
> 
> The image is put into a function:
> 
> #declare MyTesti = function
> { pigment






> }
> 
> (I am not sure where this function came from - I used it many years ago 
> in another project.)
> 
> These 4 functionas contain the information for each colour:
> 

> #declare TestG = function {MyTesti(x,y,z).green}
> #declare TestB = function {MyTesti(x,y,z).blue}
> #declare TestK = function {MyTesti(x,y,z).grey}
> 
> Each point on the image is interrogated and a sphere is drawn.
> The sphere is scaled by a constant in X and by brightness in Y.
> The sphere is rotated depending on the predominant colour: R, G, B or 
> neutral. (Rotation must be a multiple of 45 degrees or the spheres don't 
> join up to make a line.)
> The sphere is scaled to match the aspect of the input image.
> 
> I can post the code, but it needs to be cleaned up first.
> 
> m@
> 
> 
> 

The results are very promising, looking in the code would be 
interesting, thank you,
   Paolo


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