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From: Marco Patzer <lists@homerow.info>
To: ntg-context@ntg.nl
Subject: Re: Shading to transparent using withshademethod
Date: Thu, 28 Jan 2016 14:02:46 +0100	[thread overview]
Message-ID: <20160128140246.1e3fa6f2@homerow> (raw)
In-Reply-To: <56A9FBAA.4080001@wxs.nl>

On Thu, 28 Jan 2016 12:29:46 +0100
Hans Hagen <pragma@wxs.nl> wrote:

> >> How to make transparent shadings work with the new mechanism?  
> >
> >        withtransparency (1,.5)  
> 
> next beta
> 
> \definecolor [trans] [a=multiply, t=.5, g=.5]
> 
> \startMPpage
>      fill fullcircle scaled 12cm withcolor \MPcoloronly{trans};
>      fill fullcircle scaled 10cm withcolor \MPcolor{trans};
> 
>      fill fullsquare xyscaled (15cm, 15cm)
>        withshademethod "linear"
>        withshadevector (0,1)
>        withshadecolors (red,\MPcoloronly{trans})
>        withtransparency \MPtransparency{trans}
>      ;
> 
> \stopMPpage

I believe the \MPcoloronly and \MPtransparency macros split up the
\MPcolor in it's colour and transparency parts.

This doesn't really provide a solution to the initial problem as I
understand. Rather it seems to be a more robust way to use
transparency and prevent choking on colours that might contain
transparent parts.

I will shade to the background colour then, which is not that clean
but works as well. Anyway, thanks for the quick answer and the
clarification.

Marco
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  reply	other threads:[~2016-01-28 13:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-27 21:05 Marco Patzer
2016-01-28  8:43 ` Hans Hagen
2016-01-28 10:45   ` Marco Patzer
2016-01-28 11:33     ` Hans Hagen
2016-01-28 12:53       ` Marco Patzer
2016-01-28 13:45         ` Hans Hagen
2016-01-28 14:34           ` Marco Patzer
2016-01-28 17:26             ` Hans Hagen
2016-01-28 18:09               ` Marco Patzer
2016-01-28 11:29   ` Hans Hagen
2016-01-28 13:02     ` Marco Patzer [this message]
2016-01-28 15:16       ` Hans Hagen

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