> On 4-3-2018 18:12, Norbert Kern wrote:
>> #declare p_o_x = function {p_original (x,y,z).x}
>> #declare p_o_y = function {p_original (x,y,z).y}
>> #declare p_o_z = function {p_original (x,y,z).z}
>>
> 
> I had thought to use:
> 
> #declare p_o_R = function {p_original (x,y,z).red}
> #declare p_o_G = function {p_original (x,y,z).green}
> #declare p_o_B = function {p_original (x,y,z).blue}
> 
> But that should yield the same thing I guess. I was going to code that...
> 

Yes, both forms will yield the same end result, but, the second form is 
recommended whenever you are dealing with colours.

Alain

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