POV-Ray : Newsgroups : povray.off-topic : Re: Assumed_gamma and .gray : Re: Assumed_gamma and .gray Server Time
2 Dec 2024 18:23:16 EST (-0500)
  Re: Assumed_gamma and .gray  
From: Cousin Ricky
Date: 6 Nov 2024 18:09:24
Message: <672bf724$1@news.povray.org>
On 2021-01-21 17:49 (-4), Cousin Ricky wrote:
> On 2017-01-21 3:53 AM (-4), Thomas de Groot wrote:
>> On 20-1-2017 22:04, Cousin Ricky wrote:
>>> On 2017-01-20 03:53 AM (-4), Thomas de Groot wrote:
>>>> On 20-1-2017 5:35, Cousin Ricky wrote:
>>>>>
>>>>> #macro DotGray (Color)
>>>>>   #local C = color Color;
>>>>>   (0.2126 * C.red + 0.7152 * C.green + 0.0722 * C.blue) // ITU-R
>>>>> BT.709
>>>>> #end
>>>>
>>>> [scribbles with pencil on a greasy scrap of wrapping paper, and
>>>> tacks it
>>>> to an overweight folder]
>>>>
>>>> Done!
>>>
>>> Ah, and fortunately for those of you not under Donald Trump's
>>> jurisdiction, this version also works:
>>>
>>> #macro DotGrey (Colour)
>>>   #local C = colour Colour;
>>>   (0.2126 * C.red + 0.7152 * C.green + 0.0722 * C.blue) // ITU-R BT.709
>>> #end
>>>
>>
>> Obviously. I shall use the other one in solidarity.
> 
> You are hereby released from your solidarity pledge.

Uh...


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