POV-Ray : Newsgroups : povray.off-topic : Re: Assumed_gamma and .gray : Re: Assumed_gamma and .gray Server Time
2 Dec 2024 18:40:46 EST (-0500)
  Re: Assumed_gamma and .gray  
From: Thomas de Groot
Date: 7 Nov 2024 06:23:26
Message: <672ca32e@news.povray.org>
Op 07/11/2024 om 00:09 schreef Cousin Ricky:
> 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...
> 
Yeah...

-- 
Thomas


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