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From: Henri Menke <henrimenke@gmail.com>
To: ntg-context@ntg.nl
Subject: Re: Define color with calculations
Date: Mon, 18 Feb 2019 17:02:32 +1300	[thread overview]
Message-ID: <45db3223-6cdf-bb4e-e844-034f1f45f6a1@gmail.com> (raw)
In-Reply-To: <CAMHZ1dZjZiV+FtsWsJ7=hThXmrfYoqjGA=gQNRx0oCUYCXBc9A@mail.gmail.com>

Use Lua.


\def\eval#1{\ctxlua{%
    local context = context
    local _ENV = math
    context(#1)
}}

\definecolor[mycolor][r=\eval{0.5*0.7}]

\starttext

\color[mycolor]{Hello!}

\stoptext



On 18/02/19 4:37 PM, Mohammad Hossein Bateni wrote:
> Hi,
> 
> When I use definecolor, (how) can I use computations in setting the value
> of a component?  Something like the following...
> 
> \definecolor[mycolor][r=0.5*0.7]
> 
> Thanks,
> ~MHB
> 
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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> ___________________________________________________________________________________
> 

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

  reply	other threads:[~2019-02-18  4:02 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-18  3:37 Mohammad Hossein Bateni
2019-02-18  4:02 ` Henri Menke [this message]
2019-02-18 16:44   ` Mohammad Hossein Bateni
2019-02-18 21:33 ` Wolfgang Schuster
2019-02-18 21:38   ` Henri Menke

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